bluuebunny/crossref_metadata_2025_split huggingface dataset:
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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.