bluuebunny/crossref_metadata_2025_split huggingface dataset:
Transportation mode choice of workers in Cikupa Village, Cikupa Sub-district, Tangerang Regency, Banten Province
Authors: Hansa F , Susilowati M H D 
Published: September 2020

Abstract
In carrying out a travel plan, people will have to consider a lot of things such as distance and their financial abilities as well as various other considerations so that they are able to pick the most suitable transportation mode to reach their destination. This includes making a trip to one’s workplace. This research was conducted in Cikupa Sub-district, which is a sub-district with the highest number of workers in Tangerang Regency, as well as an industrial central area surrounded by regular and irregular settlements with differences in settlement quality, derived from settlement patterns, accessibility, and existing facilities, resulting in differences in the choice of transportation modes for work. This study aimed to analyze the transportation mode choice by workers in Cikupa Village and the variables that influence it. The variables studied were the travel-based characteristics including travel costs, travel time, and distance traveled. Variables were processed and analyzed with spatial analysis methods supported by statistical methods of chi-square and contingency coefficient. The results showed that the majority of workers in Cikupa Sub-district use private vehicles, mainly motorcycle. The results of the statistical test indicated that the only variables that greatly influenced the choice of transportation modes are travel costs and travel time.
Routing the highway development by using SuperMap Least Cost Path Analysis (LCPA) and Multi-Criteria Decision Analysis (MCDA) and its assessment toward spatial planning
Authors: Januadi M I , Nabila D N U 
Published: September 2020

Abstract
Highway as road network connectivity plays an important component in regional development that can overcome inter-regional development gaps. Spatial planning and cost priorities of the highway projects must be considered when examining the optimal highway routes, especially in areas that have varied slope characteristics like in Sukabumi-Cianjur area. Therefore, analysis and modeling are needed to show the choice of effective and efficient highway routes amid environmental condition in the region. Least Cost Path Analysis (LCPA) and Multi-Criteria Decision Analysis (MCDA) can be used to determine the optimal route of a road network. This modeling uses various criteria such as topography, geology, land use, and multi-hazard areas with three MDCA and LCPA simulation models. Based on the suitability of highway development with spatial planning in 2030 using scoring assessment, the optimal highway route from Sukabumi-Cianjur is LCPA-MDCA 1 with total score 69.06 and 49% length of the route that is suitable. Meanwhile LCPA-MDCA 3 shows total score 65.6 with 48,8% length that is suitable, and the least optimal route is LCPA-MDCA 2 with total score 65.48 and 44,6% length of the route that is suitable.
Estimation of changes in the lake water level and area using remote sensing techniques (Case study: Lake Toba, North Sumatra)
Authors: Aziz F , Kusratmoko E , Mandini M D 
Published: September 2020

Abstract
The decline in water level that occurred in Lake Toba, North Sumatra lately has become an important issue for the local government and the community around the lake. Climate factors also have a great impact especially when the extreme conditions ENSO and IOD occurred. The purpose of this research is to look at the relationship between rainfall and the ENSO and IOD through the changing of Lake Toba’s water surface level and area. Monitoring of the dynamics of the water surface level and area of Lake Toba can be analyzed through remote sensing by using Landsat imagery to be more effective and efficient. Then the image is processed by using the MNDWI (Modified Normalized Difference Water Index) method to separate water bodies from the land. Retrieval of Landsat imagery was taken in the range of 2008 - 2017, then selected years when the conditions of ENSO and IOD occurred. The results showed in 2008, which was the La-Nina year followed by a positive IOD, the surface area of water decreased to 4.45 km2 from the average area, but in 2015 when the El-Nino phase followed by positive IOD the water surface area increased to 4.7 km2 from the average area. ENSO and IOD did not have much influence on rainfall in the Lake Toba region but slightly affected the water surface level and area of Lake Toba.
Potential groundwater recharge zone in the groundwater basin of Majalengka Regency
Authors: Nasution A H , Kusratmoko E , Rustanto A 
Published: September 2020

Abstract
Water is an important natural resource in supporting the lives of all living things. The increasing population in Majalengka District adding a large amount of water usage. The extraction of groundwater that has been carried out over time has also increased, thus, a study is needed to reveal groundwater recharge zone so that we can predict the groundwater reserves in a certain area. Therefore, a study entitled Potential Groundwater Recharge Zone in CAT Majalengka needs to be conducted because CAT is a location where rainwater falls and can also be used as data to estimate the groundwater reserves in a certain area. The method used in this study was SMCE (Spatial Multi-Criteria Evaluation) by using a quality point system on each variable used. The variables used in this study were lithology, rainfall, slope, altitude, land use, soil texture, and flow density. The results of this study showed that the potential groundwater recharge zones in CAT Majalengka were dominated by high and very high classifications. High and very high classification potential dominated at an altitude of 500-1000 meter above sea level.
Changes in the west Delta of Ci Manuk in 2002 - 2018
Authors: Pamungkas F D , Saraswati R 
Published: September 2020

Abstract
Ci Manuk Flow Area is one of the river basins in Java Island. The Ci Manuk Delta changed from 1963 to 2002. Changes that occurred in the Ci Manuk delta were moved by extensive accretion. The reason for choosing Ci Manuk Delta is because the Ci Manuk flow has a high sedimentation rate compared to other flow areas, besides that, Sumedang Regency has built a dam to hold the sediment flow and repair floods. How this is done as a problem and research can be done to determine the delta-forming factors and changes in the delta region that occurred temporally from 2002 to 2018 after the dam was built. The method used in this research is spatial analysis and quantitative descriptive analysis. Spatial analysis is used to describe the spatial change in the temporary area and quantitative descriptive analysis is used to explain the results of the calculation of changes in delta area. The results of this study are the dynamics of delta changes that occur in the west are dominated by the addition of delta (accretion) with an area of 522.3 ha and undergo a change in shape from cuspate to birdfoot. The factors that support the addition of the area comes from internal factors, namely the high value of sediment and the low external factors originating from the marin.
Loss levels regarding flood affected areas in the upper Citarum Watershed
Authors: Fernandos  , Tambunan M P , Marko K 
Published: September 2020

Abstract
The Upper Citarum Watershed is an area that replaces the annual flood. The annual flooding experienced by the Upper Citarum watershed is influenced by several factors, such as changes in land use. From these annual flood events, there will be a level of loss experienced by communities affected by floods. Floods that occur in the Upper Citarum watershed can be seen from the results of the visual model of the upstream Citarum watershed, so that the information can be obtained on the areas affected by flooding and large floods from each affected areas. The purpose of this study is to determine losses due to flooding obtained from flood risk level data, which is the result of an overlay of the level of flood hazard and flood vulnerability. The level of flood hazard can be obtained from the processing of the digitized flood model and field survey. While the rate of flood returns is obtained from the processing of land use data which is the economic value of each land use. This research resulted in a level of flood risk which is dominated by a moderate level of flood risk of 44.15%, then the high-risk level is 42.25%, and the low flood risk level is 13.6%. The extent of the flood risk level is then converted to the economic value of each land use, to get the value of the loss rate. Determination the level of loss, in addition to taking into account the level of the parameters of flood risk, the extent of each region level of risk also influences the determination of the level of flood losses in the Upper Citarum Watershed. This research is carried out as an effort to develop disaster mitigation in the annual flood prone area tobe used as a reference in the development planning process.
Water quality in Ci Lutung Watershed (Case study: Ci Jurey Sub-Watershed and Ci Deres Sub-Watershed)
Authors: Nabila S , Kusratmoko E , Marko K 
Published: September 2020

Abstract
Natural waters such as rivers are environmental components that need to be considered especially regarding the quality of river water. River water quality can decrease because landuse change as a form of increasing human activity. The purpose of this study is to assess the river water quality of the Ci Lutung Watershed, specifically the Ci Jurey-Sub-Watershed and Ci Deres Sub-Watershed. To assess the quality of the water, a water sample is taken directly from the specified river body. The water quality parameters tested consisted of TDS, pH, conductivity, and turbidity as physical parameters, and nitrate, phosphate, sulfate and chloride as chemical parameters. This water quality assessment is carried out using the STORET method, which is comparing the results of parameter tests with Class III Water Quality Standards as determined by Indonesian Government Regulation No. 82/2001. This research also identified the relationship between landuse and lithology as a watershed characteristic with the river water quality. To be concluded, the water quality of the Jurey River and the Deres River is categorized as light polluted according to the STORET calculation. Also, the water quality in both rivers are spatially influenced by each watershed’s characteristic. TDS value is calculated high because its lithology –age of oligocene Tertiary rocks, and nitrate value is calculated high because it is influenced by agricultural activities.
Spatial-temporal analysis of changes in land-cover and land surface temperature (LST) within Universiti Putra Malaysia campus area
Authors: Shidiq I P A , Ismail M H , Supriatna S , Wibowo A 
Published: September 2020

Abstract
The urban forest is one of the typical vegetation-covered space in an urban area. The existence and development of the urban forest commonly found within the university campus site. The ecological and environmental characteristics in a university campus site usually resemble and similar to the urban area. The physical environment of the campus area is gradually changing due to development and improvement purposes, and it is impacting the land-cover on the surface. Changing the physical element of the surface will affect the absorption of the sun radiation, and further, it is changing the dynamic of the micro-climatic condition or temperature within the surrounding area. The primary focus of the research is to observe the impact of land-cover change on the land surface temperature (LST) within the campus area. Universiti Putra Malaysia is one of the largest campuses located in the urban area of Serdang district, state of Selangor. The dynamic changes in this site observed through multi-temporal Landsat 8 OLI-TIRS level 1 imageries. Datasets from 2013 to 2015 were collected to employ spatial-temporal analysis on land-cover changes, as well as the LST algorithm to monitor the surface temperature. The result shows that there was an increasing surface temperature during 2013-2015, the maximum LST in September 2015 was found at 32.17 °C, it is higher than the maximum LST in September 2013 (28.84 °C). The result shows that there was an increasing surface temperature during 2013-2015, which corresponds with the inclining built-up area. The research concluded that changes in land-cover would affect the spatial-temporal land surface temperature at University Putra Malaysia.
Study of atmosphere dynamics in the event of very heavy rain causing flood in Supadio International Airport Pontianak using WRF-ARW Model and Himawari-8 Satellite Imagery (Case study: November 11, 2017)
Authors: Ayasha N , Ryan M , Fadlan A 
Published: September 2020

Abstract
On November 11, 2017, extreme weather in the form of very heavy rain has occurred in Pontianak. Based on surface observations data from Supadio Meteorological Station, the amount of rainfall reached 187.4 mm / day and caused flooding in several areas in Pontianak. As a result, a number of flights were cancelled on November 12, 2017 due to flooding in the airport runway. This study aims to examine the causes of very heavy rain using the WRF-ARW model and the results of Himawari-8 satellite images which are processed using Python Programming. Based on the output of the WRF-ARW model with the resolution 3 km, it shows some weather parameters that have potential for bad weather in Pontianak, namely the existence of shear line in West Kalimantan and the eddy circulation in this region which can trigger convective cloud accumulation in Pontianak, the wet RH in the 850-500 mb layer ranges from 70-90%, the CAPE ranges from 1000-2000 J/kg, and the air pressure decreases between 03.00 UTC until 06.00 UTC with a 1.7 mb tendency. In addition, the results of the Himawari-8 Satellite Image show that the cloud peak temperature is very low at -75.8°C at 08.33 UTC. Therefore, based on the WRF-ARW and Himawari-8 Satellite results, those support the occurrence of very heavy rain in Pontianak.
Exploring the relationship of solid waste height and land surface temperature in municipality landfill site using Unmanned Aerial Vehicle (UAV) images
Authors: Hernina R , Rokhmatuloh  , Setyawan B A 
Published: September 2020

Abstract
Increasing solid waste volume from human activities makes solid waste stockpiles grows higher in municipal landfill site. This phenomenon has potential risk especially in form of increasing land surface temperature (LST) when compared to surrounding environment. However, detailed survey of LST in solid waste piles using conventional tools might be time-consuming. Therefore, this study offers alternative of elevation and LST measurement in waste piles using combined images from unmanned aerial vehicle (UAV) and Landsat 8. Herein, DJI Phantom 4 Pro was flown in a waste stockpile located in Cipayung landfill site, Depok Municipality, Indonesia. Digital Surface Model (DSM) was acquired from UAV images processing. LST prediction is processed from Landsat 8 thermal infrared sensors (TIRS) band 10. Resampling technique was employed to match spatial resolution between DSM and LST. Both solid waste elevation and LST were paired statistically using Pearson correlation coefficient to observe linear relationship between them. Results show that waste elevation and LST have positive correlation.
Estimation of soil erosion by USLE model using GIS technique (A case study of upper Citarum Watershed)
Authors: Khairunnisa F , Tambunan M P , Marko K 
Published: September 2020

Abstract
Citarum Watershed is categorized as a critical watershed due to erosion and environmental damage. Erosion is a continuing long-term problem because of its impact to the economic use and environment. The purpose of this study is to determine the distribution of annual soil erosion by USLE model using Geographic Information System (GIS). The four major input parameters affecting to soil erosion are rainfall erosivity factor (R), length slope factor (LS), soil erodibility factor (K), and land use factor (CP). The result showed that the average annual soil erosion was 122,76 ton/ha/year. The erosion hazard categorized into four classes which are low, moderate, high and very high. The low level of erosion is <15 ton/ha/year has about 2,47% area of low level and located in the north of Upper Citarum Watershed. The moderate level of erosion is 15 - 60 ton/ha/year has about 11,13% area of moderate level and located in the north, east, southeast and south of Upper Citarum Watershed. The high level of erosion is 61 - 180 ton/ha/year has about 78,53% of high level which dominates Upper Citarum Watershed. The very high level of erosion is >180 ton/ha/year has about 7,87% of very high level and located in south and southwest of Upper Citarum Watershed. The result can be used as a consideration for soil erosion prevention measures by local people and government to reduce soil loss.
Spatial modeling of landscape and land cover pattern in Semarang City
Authors: Sugiyo K , Supriatna S , Risnarto  , Afdhalia F 
Published: September 2020

Abstract
Semarang City is one of the largest cities in Indonesia. Tidal flooding, flash floods, sea water intrusion at the coast and landslide at the hills, are the issues the city currently dealt with as a side effect of land conversion. This study aims to analyze the landscape and land cover pattern of Semarang City in 1996, 2003, 2016 by using the landscape indices and generate spatial models of the landscape and land cover pattern of Semarang City. Landsat images from 1996, 2003 and 2016 and eight landscape indices (PD, PLAND, LPI, LSI, MNN, IJI, SHDI, and SHEI) were used to analyze landscape/land cover pattern and its change. Binary Logistic Regression and geography information system were used to build a mathematical and spatial modelling of landscape/land cover change using driving factors such as altitude, slope, land subsidence, population density, land ownership, land price, street density, drainage density, and distance from city center. Landscape indices shows that the highest land utilization (higher PD, LSI, MNN, IJI, SHDI, SHEI and lower LPI) mostly occurred at altitude 25-100 MASL (meters above sea level) in 1996 and 2003; in 2016, it occurred at altitude 100-500 MASL. In the period of 1996-2003, land fragmentation with high mixing and diversity occurred at altitude 25-100 MASL, while in the period 2003-2016, it occurred at altitude 100-500 MASL. Spatial modeling of landscape/land cover in Semarang City is best applied at altitude 100-500 MASL. The probability of landscape/land cover change is high when located at the high and flat areas, relatively high river and road density, highest population density, and lowest land price.
Identification of misconceptions in geography using the three-tier diagnostic test
Authors: Desfandi M , Abdi A W , Gadeng A N , Sofia I 
Published: September 2020

Abstract
Misconceptions can occur in all subjects, including in geography. Three-tier diagnostic test is an instrument that cannot only be used to determine the level of understanding of concepts, but also can identify misconceptions in geography on earth dynamics subject matter by using three-tier diagnostic test. The study uses a quantitative approach, with data analysis technique, with data analysis technique use descriptive statistic. The study was conducted in Madrasah Aliyah Negeri Model (Islamic Senior High School) Banda Aceh with the subject of study were 70 students of Social Sciences Class. Data collection is done through three-tier diagnostic test that has been tested for validity and reliability. The results showed that 30.5% of students did not understand the concept, 26.5% of students have misconception, and 5% of students give wrong answer. Based on study finding, it is suggested to the teacher to be able to prepare well the learning particularly on earth dynamics subject matter, such as by implementing learning methods that are suitable with characteristics of learning subject and by using learning media so that students’ understanding of concepts increases.
Forest management in Malaysia: The strategies undertaken towards achieving Sustainable Development Goals
Authors: Moktshim N 
Published: September 2020

AbstractThe forests of Malaysia have been systematically managed with the establishment of the Forestry Department in 1901, whereby ecologically and environmentally sound forest conservation and management practices have been developed to ensure forest renewal and sustained yield. The evolution of forest management studies was documented with the chronological of attempts by Malaysia toward achieving the aim to become a developed country. Forest resources development is one of the terms used in forest development planning and forest development resource. Similarly, it always involves the effects and impact toward the surroundings, especially regarding human life. The objective of this studies is to identify forest management strategies undertaken by Malaysia. This research come out with the two questions namely what are the strategies of forest management efforts in Malaysia? and what are the trends of forest policy in Malaysia? Economic development is more stressed on the circle of life. Malaysia’s development progression shows clear evidences that the country had positioned itself toward achieving and realising to become a developed and industrialised nation by the year 2020. However, the last decade or so showed that Malaysia continues to be threatened by increasing diversities, frequencies, and intensities of forest degradation, and their threat on human quality of life issues. The strategies for forest and implementation have been gradually implemented at the national level, and lately at the regional and global scales. Forestry Department in Malaysia also involved in REDD+ strategies to determine the level and extent of national level mitigation actions to be taken, ensures at least 50% of national land mass is forested and intact, ensures water supply for both domestic and industrial use, ensures soil fertility for crop production and for community adaptation to climate change. The results were also clear in showing the forest degradation issues trend changes through time. The approach of forest management efforts is parallel with forest degradation issues for each phase of development.
The earthquake hazard level of Makassar
Authors: Ramadhan B R , Damayanti A , Dimyati M 
Published: September 2020

Abstract
An earthquake is a natural disaster that is often found in Indonesia because its geological area is a meeting between three large tectonic plates. Earthquakes have a high level of danger due to unpredictable events. In the Sulawesi region, especially Makassar, in 2017, there was an earthquake measuring 3 SR-6 SR, with a shallow epicenter. Epicenter distance calculation is used to determine the value of peak ground acceleration (PGA), which can then affect the intensity value in the hypocenter. This study aims to analyze the level of earthquake hazard using the PGA value as the basis for the initial reference of earthquake disaster mitigation. Variables used include rock type (geology), slope and the value of peak ground acceleration (PGA). Data on rock types were obtained from the Makassar City BPBD, and slope variables were processed from the SRTM DEM. Next, an overlay analysis was conducted to determine the level of earthquake hazard using a GIS application. The results showed that Makassar City had a majority of 94% of its area has a low level of earthquake hazard, while 6% of the area that had an earthquake hazard level was quite high in the east of Makassar. The frequency of earthquakes that were felt to be influential by the community (scale III MMI) was only two times in the last three decades (1996 and 2018).