bluuebunny/crossref_metadata_2025 huggingface dataset:
Community-Based land use models for sustainable livelihoods in Merapi Volcano disaster prone areas III in Sleman Regency
Authors: Krisanti M W W , Paripurno E T , Nugroho A R B , Maharani Y N , Prasetya J D
Published: March 2024

Merapi Volcano is one of the active volcanoes in Indonesia. The disaster-prone areas of Merapi Volcano are divided into three levels, namely disaster-prone areas I, II, and III. Level III area being the highest risk area. Disaster-prone area III of Merapi Volcano is a place for people’s daily activities to manage their livelihood assets such as farming and gardening, livestock, sand mining, and tourism. This study aims to analyze land use in disaster-prone areas III of Merapi Volcano, find the relationship between land use and community preparedness, and find a model of sustainable land use in disaster-prone areas based on the community. The research method uses qualitative methods with participatory rural appraisal techniques. The research was conducted in villages located in disaster-prone areas III of Merapi Volcano which are included in the Sleman Regency area. The results of the research are finding the land use models based on spatial and temporal considerations and a community-based land use model at the micro to macro level in disaster-prone areas III. This research can be input for policy makers, institutions working in the field of disaster, further research, and for the wider community in carrying out land use in disaster-prone areas.
Network analysis for determining the fastest evacuation routes in flood-prone areas of the Tuntang Watershed, Indonesia
Authors: Maulana Muchamad Farid , Sari Dewi Novita
Published: March 2024

Flooding in the Tuntang Watershed, Central Java Province, is a hydrological disaster that occurs regularly. Several factors, such as high rainfall, limited water catchment areas, and narrowing riverbanks, cause flooding. The amount of material and non-material losses can be minimized through an effective disaster mitigation process. One way is to determine and establish flood evacuation routes to shelters. This research aims to analyze the fastest and most effective evacuation route for residents using Geographic Information Systems. This research process includes analyzing flood-prone areas, ranging from highly vulnerable areas to areas that are not vulnerable. Furthermore, it analyzes population density, distribution of residential areas, natural physical conditions, and road conditions and identifies the location of the best evacuation center for residents affected by flooding. The method used is Sample Additive Weighting (SAW) to determine the best evacuation point and Network Analysis Fastest Route to determine the optimal evacuation route to the designated evacuation center. The results of this study include modeling a flood evacuation route with an estimated effective evacuation time of 30-45 minutes, consisting of 50 fastest alternative routes to appropriate shelters.
Community-Based blue economy development in Mangrove Ecosystems (Case study in the Segara Anakan Lagoon, Cilacap Regency)
Authors: Fajriyah Nur
Published: March 2024

This study aims to examine the direction of blue economy development in the Segara Anakan Lagoon, Cilacap Regency. This research uses descriptive qualitative method with SWOT analysis. The sampling technique used in this research is purposive sampling technique. Data collection techniques used were field observations, in-depth interviews, documentation, and literature study. This study adopted Miles and Huberman’s data collection which consisted of three activities, namely data reduction, presentation, and drawing conclusions/verification. The results showed that there were 6 villages and/or sub-districts which were the research locations because they were located in the Segara Anakan Lagoon area, namely: Kutawaru Sub-District, Tritih Kulon Sub-District, Klaces Sub-District, Ujung Gagak Sub-District, Ujung Alang Village and Panikel Village. Some of the blue economy activities carried out by the community without destroying the mangrove ecosystem in its development are 8 strength factors, 11 weakness factors, 7 opportunity factors and 9 threat factors.
Analyzing land use changes in Grogol District, Sukoharjo, Indonesia: A study from 2013 to 2019
Authors: Zaelani A. , Taryono  , Novareka A. R.
Published: March 2024

The phenomenon of land use change in Grogol District, Sukoharjo Regency, between 2013 and 2019. The district, which was previously primarily an agricultural area with rice fields, has experienced a shift in land use towards settlements and shopping/industrial centers. Grogol District is a crucial access road connecting Surakarta City with Wonogiri Regency, making it a strategic location for industrial development. The study aims to analyze the changes in land use in Grogol District during the specified time frame and identify the factors influencing these changes. The research utilizes the comparison and overlay methods, using data on land use from 2013 and 2019. The findings indicate that the dominant change in land use is the conversion of paddy fields into industrial land, covering an area of 127.96 hectares. Several factors contribute to these changes, including the growth of economic facilities, population, and population density. Additionally, the district’s adjacency to Surakarta City plays a role in the land use transformation. As Surakarta City faces limitations in available land for development, the economic infrastructure development has been redirected to Grogol District.
Influence of faults on mineralogy and geotechnical characteristics of Tropical Volcanic Residual Soils (TVRS) concerning environmental issues and regional development, Case Study: West Lampung Transect Road, Sumatra, Indonesia
Authors: Iqbal Prahara , Puswanto Eko
Published: March 2024

Hydrothermal alteration occurs in andesitic rocks in the study area due to the presence of the Great Sumatran Fault. This study shows the consequences of this phenomenon on the characteristics of volcanic residual soils. This study comprises volcanic residual soils formed from the same andesitic rocks in a site located in West Lampung, Sumatra, Indonesia which has a tropical climate. Chemical, physical, and mineralogical characterizations were carried out to describe the materials and the changes imposed by their alteration. Effects of alteration on the soil’s behavior were assessed in terms of plasticity.
Assessment of liquefaction potential and damage on the toll road construction in earthquake-prone area, Sleman Regency, Yogyakarta
Authors: Setyadi G P , Rifa’i A , Indrawan I G B
Published: March 2024

The construction of toll roads in earthquake-prone areas presents significant challenges due to the potential occurrence of liquefaction, a seismic phenomenon in fine-grained soils losing strength during earthquakes. The research was conducted at a toll road construction site in Sleman Regency, Yogyakarta, an area near the active Opak fault which increases its vulnerability to liquefaction. The objective of this study is to analyse the liquefaction potential and damage on the surface in research area. The method used is simplified procedure by Idriss and Boulanger which assessing the cyclic stress ratio and cyclic resistance ratio based on standard penetration test and laboratory data. Then, Liquefaction Potential Index (LPI) and Liquefaction Severity Index (LSI) are calculated. Finally, vertical displacement caused by liquefied soil is estimated using the post-cyclic reconsolidation model to understand its impact on the surface. The study shows low to very high liquefaction potential at the toll road construction site in Sleman Regency. With a vertical displacement of 4.69 cm to 38.83 cm, surface damage can range from low to extensive, emphasizing the need for liquefaction mitigation in earthquake-prone areas like Yogyakarta during toll road infrastructure planning.
Uncertainty in measuring the role of climate change on debris-flow triggering on volcanoes - bulk-density, temperature and moisture analysis at Unzen Volcano (Japan)
Authors: Daikai Rikuto , Gomez Christopher , Hotta Norifumi , Shinohara Yoshinori
Published: March 2024

As climate change creeps into the 21st century, the intensity of debris flows due to heavy and concentrated rainfall has increased in mountainous regions of Japan and East Asia. However, the relationship between climate change and an increase in debris flows is likely to be non-linear. Rainwater infiltrates more quickly into porous material, and the lack of vegetation cover increases evaporation and the temperature of surface sediments. In addition, periodic gully collapses bring fresh layers of porous material that increase the distance between the surface and the vadose zone. Therefore, to understand the relationship between volcanic debris flows (or lahars), parameters such as density, porosity, temperature, and moisture retention must be captured in detail in both time and space. The aim of this paper is to assess the role of loose, coarse, and porous sediments in lahar triggering. The present study was conducted at Unzen volcano in the Tansandani Guly between 31 May and 1 June 2023, 30 years after the last eruption. The dacite material is composed of a matrix of sand and coarse sand mixed with larger fractions and blocks, therefore traditional density measurement methods could not be applied, and a photogrammetric based method was used. In the field, sets of SfM-MVS photographs were taken before and after digging a hole in the sediments so that the measured mass could be compared to the volume of the hole in the sediments. After the sediments were dried, the dry and wet density, bulk density and porosity of the sample were calculated. When compared to the temperature data collected in the field, the following results were obtained: (1) The porosity of the volcanic material was highest in the lower reaches, followed by the upper reaches, and lowest in the middle reaches. This may be because fine sand washed out of the upstream area by rainfall is currently stored in the midstream area, which may facilitate debris flow generation. In addition, the downstream area has a high porosity, which may be due to the surrounding vegetation preventing the influx of new fine sand from the channel wall. (2) Because of the higher porosity and the lack of organic matter and vegetation cover, the increase in temperature acts more directly on the decrease in water content than in mountainous areas. Consequently, empirical equations for the potential for mudslides in volcanic areas with respect to surface temperature and soil moisture need to be developed for hazard and disaster risk management purposes.
Analysis of geotourism promotion strategies based on social media in Karanganyar Regency, Indonesia
Authors: Haksoro C. , Priyana Y. , Hakim R.
Published: March 2024

Karanganyar Regency, known for its captivating mountainous geography, possesses significant potential for geo-tourism development. Enhancing the visibility of the region’s tourist attractions on social media platforms is imperative to capitalize on this potential fully, thus increasing their allure. This study aims to analyze the marketing strategies employed on social media to bolster the appeal of geo-tourism attractions. This research gathers comprehensive and reliable data from various natural tourist locations and relevant agencies using qualitative methods, survey techniques, and interviews. Several notable natural attractions with considerable developmental potential are identified, including Grojogan Sewu, Grojogan Pringgondani, Parang Ijo Waterfall, Jumog Waterfall, Telaga Madirda, and Sapta Tirta Pablengan. Key areas that influence tourism development are identified to foster the growth of these tourist hotspots. These include enhancing marketing and promotional efforts for natural tourist attractions through Instagram, optimizing accessibility to these destinations, and improving facilities and infrastructure. By addressing these aspects, tourists are more likely to be enticed to visit the natural wonders of Karanganyar Regency. The results of this study are expected to reveal effective social media-based marketing strategies for promoting natural attractions on Instagram in Karanganyar Regency. Furthermore, evaluating these strategies will lead to discovering new insights and improvements for leveraging the full tourism potential of the region.
Community empowerment strategies and disaster mitigation in Padusan Village, Mojokerto, East Java: A case study of the integrated agroforestry approach by the ‘Pesona Alam Lestari’ Forest Village Community Institution (LMDH)
Authors: Insani N , Ridhoi R , Fitriyati U , A’rachman F R , Amrozi M Y , Rismawan M A
Published: March 2024

This research aims to understand how the ‘Pesona Alam Lestari’ Forest Village Community Institution (LMDH) in Padusan Village, Mojokerto, East Java, implements community empowerment strategies and disaster mitigation in their operations. LMDH ‘Pesona Alam Lestari’ manages an area of 319.2 hectares (222 hectares in protected forest, 97.2 hectares in production forest) and operates various economic enterprises under the umbrella of agroforestry. These include hot spring tourism, livestock farming, outbound & rafting activities, camping grounds, and waterfall tours. In terms of environmental management, they collaborate with the provincial government in reforestation of critical land. The research methodology involves collecting and analyzing secondary data, interviews with LMDH ‘Pesona Alam Lestari’ members and local community members, and Geographical Information System (GIS) analysis to understand the spatial patterns of disaster risk. Methods such as observation, focus group discussions, and in-depth interviews were utilized for qualitative data. The challenges faced in this management include low involvement from the youth and limitations in managerial management. This research will provide important insights into how local communities can be empowered and how they can reduce their risk and enhance their resilience to natural disasters through the integrated agroforestry approach of LMDH ‘Pesona Alam Lestari’.
Analysis of changes in land use change on population density in Wonogiri Sub-District, Wonogiri District in 2013 and 2019
Authors: Bramantyo Tirta Aji , Sasmi Annisa Trisnia
Published: March 2024

Land use change is an event that results in a change in appearance caused by humans, usually occurring in areas that are currently or recently developed. Wonogiri sub-district has experienced changes in its land use, from undeveloped agricultural land to built-up areas. This increase has resulted in the expansion of built-up land for housing, education, and industry. The purpose of this study was to determine the distribution of land use change and the impact of population density on land use change in Wonogiri Sub-district. This research uses a qualitative data analysis method. The qualitative data uses map analysis from the results of overlaying the 2013 and 2019 land use maps. The distribution of land use change in Wonogiri Subdistrict amounted to 364.74 Ha, which was dominated by changes to settlements. It was found that one of the causes of land change is population density. The denser the population in a kelurahan, the more land use change there is, namely land change into settlements. This research produced three maps: 2013 land use map, 2019 land use map, and 2013 and 2019 land use change map.
Mobility analysis of Wonogiri chicken noodle and meatball seller in Kartasura, Sukoharjo
Authors: Oktaviyani Monica Evi , Kiat Umar El Izzudin , Sigit Agus Anggoro , Yudha Vito Pratama
Published: March 2024

The rate of population growth in Central Java every year has increased, if the number of jobs and wages is not in accordance with the number of residents it is not comparable it will have bad consequences such as unemployment, poverty to crime. The unmet needs made the people of Wonogiri conduct population mobility to Kartasura by working as traders. Therefore, this research has a goal to: 1) Analyzing the pull factors and push factors (pull-push factors) that influence the intentions of mobility actors who work as sellers of chicken noodle traders and Wonogiri meatballs in Kartasura District. 2) Analyzing circular mobility performed by respondents. The method used in this study is the Snowball Sampling method. The results obtained from the research are as follows; 1) The research results are in line with Everett S Lee’s theory; The driving factor for mobility is that there are more unfulfilled necessities of life in the place of origin compared to the place of destination. There are 4 variables of unfulfilled living needs: Low availability of jobs, low regional income, lack of transportation facilities, minimal consumers. Meanwhile, there are only 3 unmet needs, such as the cost of living which is quite expensive, the physical environment and the social environment. So the respondents chose to move to Kartasura as a destination. 2) The mobility of the respondents was spread from 11 sub-districts out of 25 sub-districts in Wonogiri, with a high number coming from the Girimarto sub-district (25%). The type of mobility carried out by the respondents was staying/lodging with the frequency of returning home dominated once a month by using private vehicles 75% in the form of motorbikes & cars and 25% using public transportation in the form of buses.
Study of origin puskesmas (public health centre) visitors in Karanganom, Klaten District, 2020
Authors: Muhamad N. A. , Anggani N. L. , Mas’ud N.
Published: March 2024

Puskesmas is a service facility that organises public health efforts and first-level health efforts by prioritising health improvement and prevention efforts to achieve the highest degree of public health at the kecamatan level. Therefore, this study aims to determine the distribution of the number of patients at Karanganom Health Centre in 2020. The data used is data from Karanganom Health Centre which contains a table of patient/visitor distribution. The results showed that the distribution of puskesmas patients was quite evenly distributed, bu the number of patients tended to be small or not more than twice the total population of the Karanganom sub-district.
Analysis of determining the location of potential flood evacuation shelter in Butuh District, Purworejo Regency
Authors: Zhafirah N. P. , Anggani N.L. , Fadilah S. I.
Published: March 2024

Map of flood events in Purworejo Regency, on January 16 2019 there were 7 flood-affected subdistricts, namely Butuh District, Bayan District, Banyuurip District, Pituruh District, Purwodadi District, Grabag District, and Ngombol District. Butuh District is the area most affected by flooding in Purworejo Regency. There are 9 villages out of 41 villages in Butuh District that are not affected. The flooding in Butuh District was caused by the overflow of several rivers, such as tributaries of the Wawar River, Gebang Besar River, and Kedunggupit River. This study aims to determine the distribution of flood vulnerability and potential shelter flood disaster evacuation in Butuh District, Purworejo Regency. The water level is estimated to reach 1 meter and makes all access closed. According to the Commander of Kodim 0708 Purworejo, there were still some residents who did not want to be taken to a safe location and with a good approach, the residents were eventually evacuated. Losses caused by floods in Butuh District were only damage to household appliances and there were no casualties. Another problem caused by the flooding in Butuh District is itching of the skin. There must be efforts to prevent floods in the Butuh District so that they do not happen again and cause the same losses. Flood disaster mitigation is an action that must be taken. Interpolation IDW (Inverse Distance Weight) and scoring to get flood hazard results and digitization to get evacuation routes. The research results show that the area is prone to flooding. Interviews showed that the southern region experienced the worst flooding because the further south you go, the lower the slope and several villages in the southern region are affected by the discharge of water into rivers from other areas. Meanwhile, secondary data shows that the northeast to south and northwest regions of Butuh District experienced the worst flooding due to high rainfall and a soil profile that was saturated with water so that several areas that had flat and sloping slopes were affected by flooding. Interviews and potential secondary evacuation shelters obtained 18 evacuation shelters and 37 evacuation shelters.
Flood hazard comparison based on geomorphic flood index and hydraulic HEC-RAS (Case study in Ciliwung Watershed, Jakarta)
Authors: Pratiwi A P , Rohmat F I W , Nugroho E O , Farid M , Kusuma M S B
Published: March 2024

The Jakarta Special Capital Region is a highly vulnerable area to floods due to its location on wetlands laced by 13 major rivers and borders the Java Sea, with more than 40% of its land below sea level and groundwater extraction leading to the ground sinking. The city has experienced several major flood disasters, and climate change has increased the risk, frequency, and severity of flooding in Jakarta. The present study aims to identify areas with flood potential in the Jakarta Special Capital Region (Provinsi DKI Jakarta) using the Geospatial Flood Index (GFI) method recommended by the National Disaster Management Agency (BNPB). The GFI method is an alternative rapid assessment that utilizes the Digital Elevation Model for National Spatial (DEMNAS) data with an 8-meter spatial resolution and employs ARCGIS and QGIS software to identify areas with high potential for flooding and the extent of inundation. To assess the effectiveness of this method, a comparison is made with the Hydraulic HECRAS model for the section from the Automatic Water Level Recorder (AWLR) MT. Hartono to the Manggarai Flood Gate, considering flood return periods Q50 and Q100. The modeling results indicate that the inundation area estimated by the conventional GFI modeling is 150% larger than that the HECRAS Hydraulic model predicted.
Soil moisture mapping for drought monitoring in urban areas
Authors: Arif Nursida , Susena Yusuf
Published: March 2024

Soil moisture is an important indicator for drought monitoring. Mapping of soil moisture in this study uses remote sensing, namely Landsat 9 OLI imagery, because it can be relied upon as a cheap source of information, and its good temporal resolution or revisit period. Two parameters indirectly related to soil moisture, namely vegetation were analyzed using the Normalized Difference Vegetation Index (NDVI) approach, and land surface temperature (LST). Drought analysis was verified using the Normalized Difference Drought Index (NDDI). The remote sensing imagery used in this study is Landsat 9 OLI imagery by selecting images with 30% cloud cover from 1 January 2022 to 31 December 2022 with the support of the cloud-based Google Earth Engine computing platform. The results of the analysis indicate high LST values in the southern part of the study area whose dominant land use is built-up areas, namely in the sub-districts of Depok, Gamping, Ngaglik, and Mlati. The effect of vegetation on soil moisture is indicated by the NDVI value, which has a relatively strong positive correlation with SMI (R= 0.46). The SMI value is in contrast to LST, where the spatial distribution of high SMI is spread in the northern part, namely Pakem, Cangkringan, and Turi districts. On the other hand, a low SMI is spread across the central and southern parts of the study area, which have a high drought index (extreme moderate). Overall, it is concluded that the SMI has the potential to map drought and is a reliable index for initial analysis of drought risk management.
Study of responsive tourism destination areas to reduce disaster risk: Canden Village, Bantul
Authors: Karang Anak Agung Ayu Ratih Tribhuana Adityadewi
Published: March 2024

Canden Village currently has a vision of a Wellness Tourism Destination. Kiringan Hamlet, located in Kalurahan Canden, was designated a Tourism Village of Jamu Gendong (Herbal Medicine) in 2016. Canden has several natural, cultural, artistic, and culinary tourism potentials spread across Canden Hamlet, Ngibikan Hamlet, Suren Kulon Hamlet, Suren Wetan, and Banyudono. Several problems related to access, namely, the primary entrance to Kalurahan Canden is not feasible, the physical condition of the road could be more suitable for motorized vehicles, and there needs to be an area marker as a wayfinding facility. In addition to accessibility conditions, disaster response in the area is critical. Canden’s location around the Opak Fault and the Opak River causes this area to have several potential natural disasters. This study of disaster response needs to be conducted to enhance a tourism village as a tourist destination that is safe, comfortable, and sustainable. The object of this study is Canden Village in Bantul, which has several disaster risks. The research aims to determine the level of disaster response in Canden as a Tourism Village. The research method is a qualitative research method using grounded theory and space syntax connectivity-visibility analysis. The concept of disaster response consists of evacuation routes, protective areas, safe zones, open spaces, and public facilities. The results of the study show that the aspect of disaster response in the region is essential to support regional security factors. This research can be a study for disaster response tourist spots and support the sustainability of an area as a tourist destination.
Appraisal of active tectonics in Karangsambung Amphitheater: Insights from DEM-derived geomorphic indices and geological data
Authors: Hidayat Edi , Muslim Dicky , Wibowo Dimas Aryo , Puswanto Eko , Aribowo Sonny , Mulyono Asep , Sudrajat Yayat
Published: March 2024

The morphology of the Karangsambung area shows a unique form, namely the morphology of the amphitheater. This area results from the complexity of tectonic, erosion, and depositional processes. The active tectonics in this region greatly influence the drainage system and geomorphic expression. The study area provides evidence of subduction in Java. It is an ideal natural laboratory for studying evidence of tectonic activity due to the subduction of the Indo-Australian plate with the Eurasian plate during the Cretaceous period. We evaluated active tectonics using the DEM to assess the characteristics of the geomorphic index. The results obtained from these indices were combined to produce an index of relative active tectonics (IRAT) using GIS. The average of the seven geomorphic indices measured was used to evaluate the distribution of relative tectonic activity in the study area. We defined four classes to determine the relative level of tectonic activity: class 1: very high (1.0 ≤ IRAT < 1.5); class 2: high (1.5 ≥ IRAT < 2); grade 3: moderate (2 ≥ IRAT < 2.5); and grade 4: low (2.5 ≥ IRAT). The results show that the study area was strongly deformed and was influenced by tectonic activity. Landsat imagery, DEM, and field observations also proved the presence of active tectonics in the form of uplift accompanied by high vertical erosion forming pointed hills with narrow valleys, the exposure of Cretaceous-aged rocks, amphitheater morphology, and the uplift of river terraces. The indicative IRAT values were consistent with the relative uplift levels, landforms, and geology.
Geotechnical information system employs spatial analysis to utilize information gathered from Cone Penetration Testing (CPT)
Authors: Yanto Fendi Hary
Published: March 2024

Surakarta has diverse structures, including malls, shopping centers, hotels, offices, markets, hospitals, colleges, and schools. However, the Regional Government lacks a comprehensive data information system about the Cone Penetration Test (CPT). Such a system benefits investors seeking to develop new infrastructure in Surakarta. In order to tackle this problem, a research study was carried out to develop an Information System based on CPT data regarding the depth of hard soil throughout the city. The investigation analyzed pre-existing CPT data, its compilation, and cartographic representation. However, the arbitrary allocation of CPT data presents a challenge. Results of the study indicate that the most predominant depth of compacted soil qc 250 kg/cm2 in Surakarta is 3-5 meters below the surface. Moreover, comparing the depth of CPT soil in the field with GIS at multiple observation points indicates findings that mostly conform to GIS predictions and those of in situ tests. Combining CPT data with ArcGIS software has been a highly successful approach in identifying projects and providing robust geotechnical information.
Configuration, furniture layout, and earthquake hazards in campus buildings
Authors: Khaerunnisa  , Anes Anggun V. M
Published: March 2024

Indonesia is the most disaster-prone country in the world because it is geographically located in the ring of fire and tectonic plate confluence. Campus buildings have large occupancy of up to 10,000 students at a time, increasing their vulnerability to disasters. The 2006 Yogyakarta earthquake affected several campuses, such as soft stories and short columns. It is clarified that the movement and shifting of furniture during the earthquake caused 90% of casualties and injuries. This study aims to identify the physical characteristics of the campus in general as well as the potential for earthquake hazards, specifically in the aspects of building configuration and furniture layout. This research was conducted using the campus-watching method that allows the students to identify the risks in the campus building. This research found that the campus buildings in Indonesia generally had an elongated space configuration with O, I, T, L, and U shapes with a ratio of more than 1:2, causing a higher risk of earthquake hazards. The risk of the soft story was identified in the lobby. The short columns in the campus building were formed due to a consecutive halved window-wall application in the classrooms and were observed to be prone to weakening. Using movable furniture, glass partitions, and racks raises the risk during the earthquake. Tables inside the room can be utilized as a temporary safe place during the earthquake. So, it is essential to use sturdy tables and ensure sufficient tables to be used as a temporary shelter during an earthquake.
Measurement of the horizontal control framework closed polygon method as a basis for making maps on the UNS Pabelan Campus
Authors: Saputro I. N. , Pagesty B. , Waluyo
Published: March 2024

Mapping is a method of determining the location and position of an area on the earth’s surface, which includes measuring distances, angles, vertical directions, and horizontal directions. A situation map is the starting point for a project that aims to determine changes in the state of an area over time. The initial measurement of the scenario map takes the form of determining the points of the basic mapping framework that are evenly dispersed in the area being assessed by measuring the horizontal control frame. ents, was used in the horizontal control framework’s experimental procedure. The closed polygon approach was used to take measurements with 44 control points as a horizontal frame. The angle correction, abscissa correction, and ordinate correction satisfied the practicality to be employed, according to the data obtained from the measurement of the horizontal control frame using the closed polygon method. The implications of utilizing the closed polygon method to measure the horizontal control frame are the foundation for precise mapping of the situation for future measurements.
Determining factors of preparedness of heads of families in facing flood disasters in river watersheds
Authors: Nababan Donal , Rotua Tiurmaida Natalia , Perangin-angin Putri Annisa br.
Published: March 2024

Flood disasters are events caused by poor water and land conditions as well as high rainfall. Flood incidents in North Sumatra Province during the 2002-2019 period reached 450 incidents with the number of victims reaching 512 people and injuries reaching 12,630 people. Seeing the existing conditions and considering the large number of fatalities, to reduce the impact of flooding, community preparedness is a very important factor. Community preparedness Community preparedness in disaster management has an important role, because it will influence community actions when a disaster occurs. Based on BPBD data, in September 2018 there was a major flood and caused 5 sub-districts to be flooded, including Medan Johor Sub-district. The aim of this research is to analyze the determinants of preparedness of heads of families in facing flood disasters in the Kwala river basin. Bekala Village, Medan Johor District. This research is an analytical study with a cross sectional design from January to August 2022 with a sample of 170 heads of families. The research results showed that there were 104 heads of families who had preparedness to face floods. There is a relationship between knowledge (p=0.018), attitude (p=0.029), socialization (p= 0.033) and length of stay (p=0.024) with the preparedness of the head of the family in facing flood disasters, while the variables age and education are not related to the preparedness of the head. family in dealing with flood disasters. It is recommended to the sub-district government and the people of Medan Johor to clean up river flows, to sub-district officials to carry out disaster response outreach and training and to heads of families to carry out flood management simulations periodically so that each member knows what to do if a flood disaster occurs.
Coastal vulnerability level and beach handling priorities in Serang District Banten Province
Authors: Pattipawaej O C
Published: March 2024

Coastal erosion and accretion have altered the shorelines of various Indonesian coastal areas, endangering the lives and livelihoods of coastal populations. Damage to beaches in coastal areas affects the community’s daily activities, the transportation system, industry, and trade, as well as the environment and public health. Based on this occurrence, the initial stage of disaster management study resulting from coastal damage is to identify the coast’s vulnerability to threatening harm. To assess coastal vulnerability, field observations and measurement from the research location were carried out to obtain visual damage observation, land use, lithology, tidal range, and beach slope. Coastline data from satellite imagery and wind data from the government agencies were carried out to obtain the rate of shoreline change, width of damage, length of damage, and wave height. The purpose of this research is to look at changes in the coastline of Serang, Banten Province, and analyse the amount of beach damage to set priorities for coastal management. The beaches explored were Karangantu Beach, Domas Beach, Lontar Beach, and Tengkurak Beach. Karangantu Beach’s level of vulnerability is classified as very high, so dealing with it is a top priority. Domas and Lontar Beaches are extremely vulnerable, so dealing with them is a key priority. Tengkurak Beach has a moderate level of vulnerability, hence the priority for managing is rather high. This can be utilized as a model for overcoming coastal damage in Serang District, Banten Province, by constructing coastal protection buildings based on the shore’s vulnerability and management priority.
A simple water purification tool as an effort to meet clean water needs
Authors: Sajidan  , Atmojo Idam Ragil Widianto , Ardiansyah Roy , Saputri Dwi Yuniasih
Published: March 2024

Water is necessary for all types of life on Earth. Water is also essential for daily activities, such as cooking, washing dishes and dirty clothes, and cleansing oneself. Water is scientifically constituted of numerous components despite its appearance of being clear and odorless. Among these numerous applications, bathing, washing clothing, and defecating account for almost 85% of total water usage. According to Water Aid 2016, more than 40% of the population in 16 nations lacked access to water facilities and wells. These impoverished groups must gather water from ponds and rivers and spend a significant portion of their daily income on safe drinking water. As a result, this study was carried out to perform simple filtering of clothing convection factory waste utilizing a simple water filtration method. This study used experimental research methods. The pretest-posttest design (pretest-posttest design) was employed in the study. The convection manufacturing wastewater was sampled in Semanggi Village, Pasar Kliwon, Surakarta City. The investigation findings revealed that the BOD and COD indicators remained below the quality criteria. After processing, the quality of liquid waste has improved and satisfied quality criteria. TSS (37.5), pH (1.08), BOD (5.4), and phosphate (9.2) efficiency all decreased. Meanwhile, the COD parameter climbed in value but remained inside the quality standard’s lower limit; therefore, it had no significance for efficacy.
Students’ knowledge of flood-prone locations around schools
Authors: Dwijayanti Rani , Widiyatmoko Wahyu , Wardhani Puspita Indra , Indyastuti Tri
Published: March 2024

Knowledge of location has an important role in decision making, especially during a disaster. This study aimed to analyze the location knowledge of MTsN 5 Klaten students related to floods around the school. Knowledge of the location or the surrounding environment can be used to reduce the disaster risk, in order to increase student capacity. This research was quantitative research. The population of this study were all students at MTsN 5 Klaten, totalling 348 students. The research sample totalled 103 students who were taken by purposive sampling method. This method was taken because class IX students had experienced a flood at MTsN 5 Klaten. Data collection techniques used a questionnaire. The data analysis used descriptive statistics. The results of the study showed that the level of students’ knowledge of the location of the flood-prone area was included in the moderate category, with an average value of 75.01. Most of the students have a moderate category with a percentage of 76.7%. There were 9 students (8.7%) in the high category and 15 students (14.6%) included in the low category. The low score of location knowledge regarding distance calculations reflects the need for distance calculation training for students in order to increase students’ location knowledge of flood.
Geomorphology mapping and landslide susceptibility for disaster risk reduction and sustainability environment in the Sub DAS Maspo, Mt. Welirang, East Java, Indonesia
Authors: Masruroh Heni , Sahrina Alfi , Sumarmi  , Rohman Fatchur , Trihatmoko Edy
Published: March 2024

Landslides are still problematic for areas with rough surface shapes and high rainfall. Landslides are still causing human life losses, so mitigation efforts for disaster risk reduction must be prioritized. The purpose of this study is geomorphological mapping and landslide hazard mapping as a basis for disaster risk reduction efforts. The method used integrates remote sensing data using geographic information systems. Geomorphology mapping is processed and analyzed using four geomorphological approaches, while for landslide susceptibility maps are analyzed using the Weight of Evidence (WoE) method using existing landslide variables and 17 landslide control factors. The geomorphological mapping results show that in the Maspo sub-watershed, there are 25 landform units based on geomorphological mapping. There are five classes of landslide vulnerability indices, i.e very low index (0.001-0.341) namely 9.38%; low index (0.341-0.471) that is 26.18%; moderate index (0.471-0.584) that is 28.49%; high index (0.584-0.741) that is 23.94% and very high index (0.714-1) that is 12.02%. The accuracy of the landslide hazard map results is 88%, indicating that the landslide hazard map has good accuracy. Dominant landslides of 26.98% and 23.59% occurred in the HS2V1/ME landform, which is the middle slope of the steep hills of the lava eruption of the 2nd Mt. Welirang with moderate geomorphic processes and HS2V1/VSE which is the middle slope of the steep hills of the 2nd eruption of Welirang volcano with the process strong geomorphism. The results of geomorphology mapping and landslide susceptibility can be used as an information base for disaster risk reduction strategies and sustainable environmental management.
Population density analysis on the land use change in Kartasura District Sukoharjo between 2011 and 2021
Authors: Istiqomah P. , Pramono W. T.
Published: March 2024

Based on data from the Central Agency on Statistics, every year Indonesia experiences population growth every year. Along with increasing growth, land has an important meaning for human survival. Arguably, the space provided is very limited, meanwhile the need for land has a tendency to increase from year to year, both for housing, agriculture, industry and so on. Addressing the increasing need for land with land that does not increase Land use conversion or commonly called land conversion is a solution to cover land needs. One of the activities that cannot be separated from the land is development. Development is a form of interaction between humans and nature. Therefore, in the implementation of development, it is necessary to consider environmental impacts that may have negative consequences. Therefore, this study aims to analyze the impact of population density on the distribution of land use change in Kartasura district in 2010 and 2018. Remote sensing image digitization to obtain land use in Kartasura district in 2011 and 2021 is then overlayed to obtain land use change results. The results show that based on the data in the table, it shows that the rate of population growth that occurred in the Kartasura district in the past 10 years has experienced significant population growth, many of the several villages in the Kartasura district have increased. Population growth data explains that there are 12 villages that have experienced an increase in population. The total population in Kartasura district in 2011 was 23,061 people and in a period of ten years the total population. The village that has the largest population density is Makamhaji, followed by Gumpang while the lowest population density is Ngemplak.
Disaster mitigation comics as a communication medium for youth regarding the impact of water pollution
Authors: Mataram S , Margaretha R
Published: March 2024

Water is an important natural resource in life, and its quality decreases in meeting human needs. This happens because human activities do not care about the environment, resulting in various disasters due to water pollution. This condition occurs in several countries, including Indonesia, with abundant water quantities at sea and on land. In education, preventive action in disaster mitigation efforts is needed, especially for teenagers, to instill knowledge and concern in the new generation. A media approach in the form of comics was used in this educational effort. The comic, a popular culture product, raised the theme of mitigating water pollution disasters and was created using a popular visual approach and digital platforms. The use of comic media has yet to produce a significant impact on mitigation actions. However, this effort has been able to generate enthusiasm from teenagers because the issue of concern for water pollution is conveyed using language that is understandable and interesting for them.
Liquefaction potential analysis based on standard penetration test in coastal area (Case study: Loh Buaya, Rinca Island, Indonesia)
Authors: Rakhman Heryawan Kurnia , Ismanti Sito , Aditya Trias
Published: March 2024

An area has liquefaction potential when it has a shallow groundwater level, loose sandy soil, and is prone to earthquakes. There are several areas with such criteria that have not been analysed for liquefaction potential. This study aims to analyse and plot the liquefaction potential in the coastal area of Loh Buaya, Rinca Island, East Nusa Tenggara Province. Soil investigation data, such as SPT, sieve analysis, and groundwater level, as well as earthquake history that occurred from 1922-2022, served as the main data for liquefaction potential analyses. The methods used were Ground Motion Equation Prediction (GMPE) to calculate Peak Ground Acceleration (PGA), Simplified Procedure, and Liquefaction Severity Index (LSI) to make a liquefaction hazard assessment. LSI scores were used to provide micro-zonation of liquefaction potential with Inverse Distance Weighted (IDW) interpolation in QGIS. The result obtained is very dense gravel has no liquefaction potential whereas loose sandy soil has very high in LSI classification because loose sandy soil has liquefaction potential up to 20 meters of depth. The applying of micro-zonation LSI by IDW interpolation method can estimate the potential level of liquefaction hazard on Loh Buaya, Rinca Island with limited soil investigation data.
Enhancing school to public transportation accessibility in Solo City: A comprehensive assessment of Batik Solo Trans (BST) bus stop locations
Authors: Ulfalliya Vicky , Amin Choirul , Amania Anti
Published: March 2024

This study primarily aims to evaluate the affordability of Batik Solo Trans (BST) bus stops to school locations within Solo City and to develop a strategic placement plan for enhancing student accessibility throughout the city. The criteria for optimal placement adhere to the Minister of Public Works Regulations, which dictate that bus stops should be within a 400-meter radius or a 10-minute travel time for pedestrians. The research employs a comprehensive methodology, including a census of existing BST bus stops and high schools in Solo City. Using ArcGIS 10.2, we employ Buffer Proximity Analysis and Network Analysis to identify potential new bus stop sites, followed by quantitative and descriptive analysis of the results. The study’s findings reveal that BST bus stop accessibility to high schools in Solo City stands at an impressive 94%, with 350 out of 175 high schools having convenient access to 165 BST bus stop locations. In order to address accessibility gaps, the research suggests integrating 16 additional bus stops, especially at notable high school locations such as SMP Muhammadiyah PK Campus II, SMPN 18 Surakarta, and MAN 1 Surakarta. The proposed strategy aims to achieve full coverage with enhanced accessibility, visualized through cartographic representation.
Spatial distribution of social vulnerability to flood disasters in Mejobo Sub-District, Kudus Regency, Indonesia
Authors: Mujianti A , Hadibasyir H Z , Renika I , Tilova U D N , Umrotun
Published: March 2024

Central Java province has the highest disaster risk index (score 203) of 33 provinces in Indonesia. In 2022, the Province was most affected by floods with 203 incidents. Kudus Regency is one of the regencies in Central Java that is often affected by floods. Mejobo sub-district is the sub-district with the most flood events in the last 5 years. The frequent occurrence of floods triggers various emerging problems such as social vulnerability. Hence, the purpose of this study is to examine social vulnerability and population analysis in the Mejobo sub-district. The calculation of vulnerability classes uses 5 parameters, namely population density, people with disabilities, vulnerable age groups, poor people, and women. which is then scored for each parameter and classified into 3 vulnerability classes (low, middle, and high vulnerability). The results obtained for low vulnerability were found in 3 villages, namely Jojo, Temulus, and Tenggeles Villages. Moderate vulnerability is in the villages of Hadiwarno, Kirig, and Mejobo. In the high vulnerability class, there are 5 villages, namely Golantepus, Jepang, Gulang, Kesambi, and Payaman.