Infiltration is the process of entering water into the soil, infiltration capacity is the ability... more Infiltration is the process of entering water into the soil, infiltration capacity is the ability of the soil to absorb water per unit time. This study aims to determine the path of infiltration in the process of groundwater formation. This research was conducted in the Rumpin area, Bogor Regency, West Java Province. The method used in this study was carried out in two ways including collecting secondary data and primary data. Secondary data in the form of slope maps, rainfall maps. Primary data obtained from the results of field mapping (survey) and geology. The two data are correlated using the Geographic Information system so as to produce a map of the infiltration rate which has one unit which is sufficient, the soil type map, namely sand with poor gradation, the MAT map has three units, namely low, medium, adequate, the slope map has five units, namely very steep, steep, rather steep, sloping, flat, rainfall maps have one unit, namely height.
Indonesia is an archipelagic country located on the path of the world's active volcanoes and equa... more Indonesia is an archipelagic country located on the path of the world's active volcanoes and equator. It has led to Indonesia to have a high potential for geological disasters and hydro-meteorological disasters. Landslides and floods are natural disasters that often occur in Indonesia. Research data shows that these two natural disasters are at the top of the list of frequent natural disasters. Jatinangor is an educational area located at the foot of Mount Manglayang with a fairly massive development, for example the construction of residential areas and shopping centers. Both of these things can be the cause of landslides and floods, both in Jatinangor and other areas with relatively similar physical conditions in Indonesia. Some people in West Java have not been properly educated regarding natural disasters and disaster mitigation. During this Covid-19 pandemic, socialization activity or other activities that gather large numbers of people cannot be carried out directly in villages. This is the background of the disaster mitigation socialization activities carried out. Therefore, disaster mitigation socialization activity need to be carried out virtually using a digital platform and a modified Participatory Rural Appraisal (PRA) approach to communities in several areas in West Java. The goal is to make the community more aware and concerned about the conditions of their respective homes and more educated regarding natural disaster mitigation. The socialization activity was carried out well and received a positive response from the community. It can be seen from the number of community participation and enthusiasm during the activity. Disaster mitigation activities are recommended and need to be continuously supported through collaboration and coordination of various parties such as academia, business or industry, community, government, media, as well as laws and regulations so that disaster mitigation programs in various regions can run well.
International Journal of Scientific Research in Science and Technology, 2021
The research area is very interesting to study to determine the characterization of the active te... more The research area is very interesting to study to determine the characterization of the active tectonic influence of the Cisanggarung watershed, West Java. The research area is in Kuningan Regency, West Java. The purpose of this study was to determine the Relative Tectonic Activity Index (Iatr) in the Cisanggarung Watershed. Through the method approach used to identify the Relative Tectonic Activity Index (Iatr) using geomorphic indexes, watershed asymmetry factors (Af), watershed shape index (Bs), valley width, and height valley ratio (Vf), and mountainous face sinusitis (Smf). The Iatr research area is divided into 4 classes: Class 1 (very high), class 2 (high), class 3 (medium), and class 4 (low). Iatr distribution in 14 sub-watersheds covering an area of 286.24 km2 is Class 1 around 14.44% of the watershed area (41.35 km2) which is located in sub-watershed 1, with Smf values 1.157, Vf 0.3, Af 72.15, and Bs 4.3. Class 2 around 28.67% of the watershed area (82.09 km2) is located i...
The research area is located on Sumedang Regency, West Java Province. This research aims to deter... more The research area is located on Sumedang Regency, West Java Province. This research aims to determine the landforms in the Sumedang Regency based on drainage pattern analysis. This research was carried out through studio analysis and field observation. Stream network and topography data were obtained from Indonesia Topographic Maps and Digital Elevation Model (DEM). Compilation of data from these media becomes the basis for determining the landforms. Based on the results, the research area has varied slopes and different landform. The very steep to steep slopes can be identified in the central, west, and south of the research area whereas the gentle slope to flat area can be identified in the north, east, and some parts of the research area. The research area consists of various types of landform, namely volcanic, fluvial, and tectonic landform. Volcanic cones and hills are part of volcanic landform that can be identified by very steep to steep slope area which has some elongate top...
ABSTRAK Sub DAS Cikapundung merupakan salah satu Sub DAS yang berada di hulu Sungai Citarum.Penel... more ABSTRAK Sub DAS Cikapundung merupakan salah satu Sub DAS yang berada di hulu Sungai Citarum.Penelitian ini bertujuan untuk mengidentifikasi patahan aktif dan respon litologi pada Sub DAS Cikapundung berdasarkan analisis morfometri yang berupa; rasio percabangan sungai(Rb), sinusitas muka gunung (Smf), rasio perbandingan lebar dasar lembah dengan tinggi lembah (Vf),dan asimetri sungai (AF) pada sub DAS Cikapundung. Berdasarkan parameter analisis morfometri tersebut dapat simpulkan bahwa di daerah penelitian terdapat patahan aktif kelas menengah sampai lemah. Namun terdapat perbedaan variasi nilai Smf dan Vf yang signifikan menunjukan adanya pengaruh respon litologi gunungapi kuarter terhadap kajian morfotektonik daerah penelitian. Litologi gunungapi kuarter yang kurang resisten terhadap pelapukan dan erosi ditunjukan dengan adanya nilai Smf dan Vf yang lebih tinggi. ABSTRACT Cikapundung Sub-watershed is one of the sub-watersheds located in the upper reaches of the Ciatrum River.This ...
in the area of West Java. The development of Jatigede Reservoir in the area of Upper Region of Ci... more in the area of West Java. The development of Jatigede Reservoir in the area of Upper Region of Cimanuk Watershed raises some concerns because the reservoir area passed Baribis fault, which formed minor faults in the upper of Cimanuk Watershed. Faults can cause geological disasters such as landslides. It is necessary to make prevention and minimize the possible impact of disaster. The purpose of this study is to obtain information about the fault occurrences in upper region of Cimanuk Watershed that will affect landslide risk zones in the area. The aim of the research is to obtain information about the existence of faults that control the occurrences of landslide potential in the upper region of Cimanuk Watershed. Research area include of Sumedang Regency and Garut Regency, covering some districts such as Tomo District, Paseh District, Situraja District, Pasanggrahan District,
International Journal of Scientific Research in Science and Technology, 2021
The study area is located in Gunung Talang District and its surroundings, Solok Regency, West Sum... more The study area is located in Gunung Talang District and its surroundings, Solok Regency, West Sumatra Province, Indonesia. This area has a potential volcanic geothermal system and is generally covered by the Quarternary rocks which are deformed due to the tectonic activity of the Sumatran Fault System. Geological structure traces are not well preserved in such an area. This study aims to determine the geological lineament pattern associated with geological structure, the geomorphic indices characteristic related to the tectonic activity and rock permeability, and the geothermal manifestation appearance based on these two factors. Geological lineament pattern is identified using the remote sensing method. Geomorphic indices characteristic is calculated through the quantitative analysis of bifurcation ratio (Rb), drainage density (Dd), mountain front sinuosity (Smf), and lineament density (Ld). Geothermal manifestation appearance is evaluated through geospatial analysis using the over...
The research area is located on Jatinangor District, West Java at coordinate 6°52'57,9" ... more The research area is located on Jatinangor District, West Java at coordinate 6°52'57,9" S 6°57'33,1" S and 107°44'55,9" E 107°49'0,5" E. This research aims to identify drainage pattern to the physical characteristics of the research area. This research was conducted through studio analysis using several thematic maps such as drainage pattern, slope, and geological map and also satellite images. Based on the results, it can be seen that the research area has parallel drainage pattern. The parallel drainage pattern shows that the research area is an elongated landform. In addition, it also shows that the research area is composed by relatively hard rocks such as volcanic rocks. It is consistent with the results of previous geological research which show that the research area consists of several types of volcanic rock. The characteristics of drainage patterns, slopes, and rock types are interrelated so that analysis of drainage pattern is important ...
International Journal of Scientific Research in Science and Technology, 2017
Cikapundung sub-watershed is one of the sub-watersheds at the upper of the Citarum River adjacent... more Cikapundung sub-watershed is one of the sub-watersheds at the upper of the Citarum River adjacent to an active regional fault, Lembang Fault. Active fault is a major factor in landform control in area that affected by tectonic activity. Therefore, an approach to identify tectonic activity in the research area through quantitative analysis (morphometry) is required. The morphometric analysis used to identify Index of active tectonics (IAT) uses four parameters, namely: Asymmetry factor (Af), Ratio of valley width and valley height (Vf), Basin shape index (Bs), and Mountain front sinuosity (Smf). Based on the parameters of Index of active tectonics (IAT), it can be concluded that 10 basins of the Cikapundung sub watershed has a class of low tectonic activity which may still be affected by the active Lembang fault. However, its existence should be noticed by the surrounding community and government, because the major earthquakes can occur anytime. In addition, the variation of Smf and Vf values caused by lithologic responses that are less resistant to weathering and erosion.
Penggunaan lahan merupakan salah satu upaya pemanfaatan lahan, namun akan terhambat apabila dipen... more Penggunaan lahan merupakan salah satu upaya pemanfaatan lahan, namun akan terhambat apabila dipengaruhi oleh kendala seperti bencana geologi, air tanah langka, kemiringan lereng curam hingga terjal, dan kekuatan fondasi buruk. Penelitian ini dilakukan karena masih sedikitnya penelitian terdahulu dalam pengembangan penggunaan lahan berupa kawasan pemukiman, industri, pertanian, pendidikan, dan sebagainya di wilayah Utara Gunung Malabar (Bandung Selatan). Penelitian ini bertujuan untuk memberikan arahan dalam tata guna lahan. Data penelitian yang digunakan mengacu data primer, sekunder, dan tersier dengan terlebih dahulu melakukan pengumpulan informasi mengenai wilayah penelitian, berupa riwayat bencana geologi, ketersediaan air tanah, curah hajan dan litologi penyusun. Metoda yang digunakan dalam penelitian ini yaitu metoda kualitatif dengan mengumpulkan dan menghasilkan data deskriptif, selain itu digunakan metoda kuantitatif berupa metoda studio dengan melakukan analisis statistik ...
Penelitian difokuskan untuk mengetahui pengaruh litologi terhadap kajian morfotektonik Sub DAS Ci... more Penelitian difokuskan untuk mengetahui pengaruh litologi terhadap kajian morfotektonik Sub DAS Cikapundung Bagian Hulu. Metode yang digunakan meliputi perhitungan Smf dan Vf melalui analisis data topografi. Secara umum berdasarkan perhitungan kelokan muka pegunungan (SMF) serta perbandingan lebar-tinggi lembah (VF) dari 10 Sub DAS Cikapundung menunjukan adanya nilai indikasi patahan aktif kelas tektonik lemah, namun terdapat perbedaan variasi nilai SMF dan VF yang signifikan menunjukan adanya pengaruh respon litologi terhadap kajian morfotektonik daerah penelitian. Satuan litologi pasir tufaan (Qyd), tuffa berbatuapung (Qyt), dan endapan kolluvium (Qc) memiliki nilai Smf dan Vf yang relatif lebih tinggi dibandingkan satuan litologi hasil vulkanik tua tak teruraikan (Qvu), dan satuan hasil vulkanik muda tak teruraikan (Qyu) yang didominasi oleh lava dan breksi. Nilai Smf dan Vf yang lebih besar tersebut terjadi akibat adanya faktor respon litologi yang kurang resisten sehingga proses...
Kabupaten Bandung Barat adalah salah satu daerah yang dianggap potensial dan menjadi representasi... more Kabupaten Bandung Barat adalah salah satu daerah yang dianggap potensial dan menjadi representasi kondisi perekonomian yang sedang berkembang. Hal tersebut dapat dibuktikan dari tingginya kegiatan perekonomian dan perindustrian yang ada. Namun di tengah tingginya kegiatan perekonomian, sektor UMKM dirasa belum cukup optimal dalam pemasarannya. Untuk meningkatkan potensi UMKM di daerah Citatah dan sekitarnya, perlu upaya atau program berkelanjutan bagi masyarakat. Pelaksanaan kegiatan PPM terintegrasi riset bertujuan untuk membuka wawasan masyarakat untuk dapat mengenal kondisi daerahnya, mengetahui potensi usaha apa saja yang dapat dikembangkan, serta menjadi media pembelajaran sekaligus tukar gagasan. Pelaksanaan PPM dilakukan dengan metode observasi lapangan melalui kegiatan KKN Kewirausahaan Unpad, diskusi langsung dan tukar gagasan dengan masyakarat dan perangkat kelurahan setempat, hingga sosialisasi kepada masyarakat Cipatat. Kegiatan ini juga dilakukan dengan studi literatur ...
Central Sulawesi is part of active tectonic as a product of subduction, which produce geological ... more Central Sulawesi is part of active tectonic as a product of subduction, which produce geological phenomena such as volcanism and tectonic activity. Palu-Koro fault section passing through the center of Sulawesi Island in Central Sulawesi town of Palu right divides into two parts, east and west. Central Sulawesi is one of the areas with a high level of seismicity in Indonesia. Geographically, the study area lies between 119 o 47’ 31.891’’ East Longitude to 120 o 1’ 46.488’’ East Longitude and 1 o 12’ 15.714’’ South Latitude to 0 o 50’ 20.922’’ South Latitude. The research aims to find geomorphological configuration in the study area, Geological structure of study area, relationship between earthquake epicenters with the fault in research area. Mapping methods that used are measurement of geological data include strike/dip, megascopic rock description, taking photographs and field test of statistical data to prove there is a relation between seismic data and the Fault which is located...
Abstrak Secara fisik, garam adalah padatan berwarna putih yang berbentuk kristal yang merupakan k... more Abstrak Secara fisik, garam adalah padatan berwarna putih yang berbentuk kristal yang merupakan kumpulan senyawa dengan bahagian terbesar Natrium Chlorida (> 80%) serta senyawa lainnya seperti Magnesium Chlorida, Magnesium Sulfat, Calsium Clorida. Garam mempunyai sifat karakteristik hidroskopis sehingga mudah menyerap air. Dari penelitian yang telah dilaksanakan, garam dapat meningkatkan daya serap tanah terhadap air, mempertahankan permeabilitas dan mengurangi plastisitas tanah ketika basah. Untuk mengetahui pengaruh garam terhadap nilai kembang susut tanah lempung, diadakanlah penelitian di Laboratorium, garam yang digunakan adalah garam dapur beryodium merk " Octopuss " , sampel tanah lempung diambil pada sekitar ruas jalan By Pass KM 17-18 kedalaman 1 m, komposisi garam dalam tanah adalah 0%, 10%, 30% dan 50% dari berat kering tanah dengan masa perawatan 3 hari, pengujian terdiri dari uji sifat fisis dan uji sifat mekanis dari tanah asli maupun tanah yang telah dicampur dengan beberapa variasi garam dapur. Hasil pengujian menunjukan, semakin tinggi porsentase garam dalam tanah dapat menurunkan nilai-nilai batas cair (LL), batas plastis (LL), indeks plastisitas (PI), kadar air optimum, pengembangan dan tekanan pengembangan, pada 30% garam nilai pengembangan sudah mencapai nol, sedangkan nilai batas susut (SL), fraksi tertahan saringan no. 200 dan kepadatan kering maksimum tanah cenderung meningkat.
Infiltration is the process of entering water into the soil, infiltration capacity is the ability... more Infiltration is the process of entering water into the soil, infiltration capacity is the ability of the soil to absorb water per unit time. This study aims to determine the path of infiltration in the process of groundwater formation. This research was conducted in the Rumpin area, Bogor Regency, West Java Province. The method used in this study was carried out in two ways including collecting secondary data and primary data. Secondary data in the form of slope maps, rainfall maps. Primary data obtained from the results of field mapping (survey) and geology. The two data are correlated using the Geographic Information system so as to produce a map of the infiltration rate which has one unit which is sufficient, the soil type map, namely sand with poor gradation, the MAT map has three units, namely low, medium, adequate, the slope map has five units, namely very steep, steep, rather steep, sloping, flat, rainfall maps have one unit, namely height.
Indonesia is an archipelagic country located on the path of the world's active volcanoes and equa... more Indonesia is an archipelagic country located on the path of the world's active volcanoes and equator. It has led to Indonesia to have a high potential for geological disasters and hydro-meteorological disasters. Landslides and floods are natural disasters that often occur in Indonesia. Research data shows that these two natural disasters are at the top of the list of frequent natural disasters. Jatinangor is an educational area located at the foot of Mount Manglayang with a fairly massive development, for example the construction of residential areas and shopping centers. Both of these things can be the cause of landslides and floods, both in Jatinangor and other areas with relatively similar physical conditions in Indonesia. Some people in West Java have not been properly educated regarding natural disasters and disaster mitigation. During this Covid-19 pandemic, socialization activity or other activities that gather large numbers of people cannot be carried out directly in villages. This is the background of the disaster mitigation socialization activities carried out. Therefore, disaster mitigation socialization activity need to be carried out virtually using a digital platform and a modified Participatory Rural Appraisal (PRA) approach to communities in several areas in West Java. The goal is to make the community more aware and concerned about the conditions of their respective homes and more educated regarding natural disaster mitigation. The socialization activity was carried out well and received a positive response from the community. It can be seen from the number of community participation and enthusiasm during the activity. Disaster mitigation activities are recommended and need to be continuously supported through collaboration and coordination of various parties such as academia, business or industry, community, government, media, as well as laws and regulations so that disaster mitigation programs in various regions can run well.
International Journal of Scientific Research in Science and Technology, 2021
The research area is very interesting to study to determine the characterization of the active te... more The research area is very interesting to study to determine the characterization of the active tectonic influence of the Cisanggarung watershed, West Java. The research area is in Kuningan Regency, West Java. The purpose of this study was to determine the Relative Tectonic Activity Index (Iatr) in the Cisanggarung Watershed. Through the method approach used to identify the Relative Tectonic Activity Index (Iatr) using geomorphic indexes, watershed asymmetry factors (Af), watershed shape index (Bs), valley width, and height valley ratio (Vf), and mountainous face sinusitis (Smf). The Iatr research area is divided into 4 classes: Class 1 (very high), class 2 (high), class 3 (medium), and class 4 (low). Iatr distribution in 14 sub-watersheds covering an area of 286.24 km2 is Class 1 around 14.44% of the watershed area (41.35 km2) which is located in sub-watershed 1, with Smf values 1.157, Vf 0.3, Af 72.15, and Bs 4.3. Class 2 around 28.67% of the watershed area (82.09 km2) is located i...
The research area is located on Sumedang Regency, West Java Province. This research aims to deter... more The research area is located on Sumedang Regency, West Java Province. This research aims to determine the landforms in the Sumedang Regency based on drainage pattern analysis. This research was carried out through studio analysis and field observation. Stream network and topography data were obtained from Indonesia Topographic Maps and Digital Elevation Model (DEM). Compilation of data from these media becomes the basis for determining the landforms. Based on the results, the research area has varied slopes and different landform. The very steep to steep slopes can be identified in the central, west, and south of the research area whereas the gentle slope to flat area can be identified in the north, east, and some parts of the research area. The research area consists of various types of landform, namely volcanic, fluvial, and tectonic landform. Volcanic cones and hills are part of volcanic landform that can be identified by very steep to steep slope area which has some elongate top...
ABSTRAK Sub DAS Cikapundung merupakan salah satu Sub DAS yang berada di hulu Sungai Citarum.Penel... more ABSTRAK Sub DAS Cikapundung merupakan salah satu Sub DAS yang berada di hulu Sungai Citarum.Penelitian ini bertujuan untuk mengidentifikasi patahan aktif dan respon litologi pada Sub DAS Cikapundung berdasarkan analisis morfometri yang berupa; rasio percabangan sungai(Rb), sinusitas muka gunung (Smf), rasio perbandingan lebar dasar lembah dengan tinggi lembah (Vf),dan asimetri sungai (AF) pada sub DAS Cikapundung. Berdasarkan parameter analisis morfometri tersebut dapat simpulkan bahwa di daerah penelitian terdapat patahan aktif kelas menengah sampai lemah. Namun terdapat perbedaan variasi nilai Smf dan Vf yang signifikan menunjukan adanya pengaruh respon litologi gunungapi kuarter terhadap kajian morfotektonik daerah penelitian. Litologi gunungapi kuarter yang kurang resisten terhadap pelapukan dan erosi ditunjukan dengan adanya nilai Smf dan Vf yang lebih tinggi. ABSTRACT Cikapundung Sub-watershed is one of the sub-watersheds located in the upper reaches of the Ciatrum River.This ...
in the area of West Java. The development of Jatigede Reservoir in the area of Upper Region of Ci... more in the area of West Java. The development of Jatigede Reservoir in the area of Upper Region of Cimanuk Watershed raises some concerns because the reservoir area passed Baribis fault, which formed minor faults in the upper of Cimanuk Watershed. Faults can cause geological disasters such as landslides. It is necessary to make prevention and minimize the possible impact of disaster. The purpose of this study is to obtain information about the fault occurrences in upper region of Cimanuk Watershed that will affect landslide risk zones in the area. The aim of the research is to obtain information about the existence of faults that control the occurrences of landslide potential in the upper region of Cimanuk Watershed. Research area include of Sumedang Regency and Garut Regency, covering some districts such as Tomo District, Paseh District, Situraja District, Pasanggrahan District,
International Journal of Scientific Research in Science and Technology, 2021
The study area is located in Gunung Talang District and its surroundings, Solok Regency, West Sum... more The study area is located in Gunung Talang District and its surroundings, Solok Regency, West Sumatra Province, Indonesia. This area has a potential volcanic geothermal system and is generally covered by the Quarternary rocks which are deformed due to the tectonic activity of the Sumatran Fault System. Geological structure traces are not well preserved in such an area. This study aims to determine the geological lineament pattern associated with geological structure, the geomorphic indices characteristic related to the tectonic activity and rock permeability, and the geothermal manifestation appearance based on these two factors. Geological lineament pattern is identified using the remote sensing method. Geomorphic indices characteristic is calculated through the quantitative analysis of bifurcation ratio (Rb), drainage density (Dd), mountain front sinuosity (Smf), and lineament density (Ld). Geothermal manifestation appearance is evaluated through geospatial analysis using the over...
The research area is located on Jatinangor District, West Java at coordinate 6°52'57,9" ... more The research area is located on Jatinangor District, West Java at coordinate 6°52'57,9" S 6°57'33,1" S and 107°44'55,9" E 107°49'0,5" E. This research aims to identify drainage pattern to the physical characteristics of the research area. This research was conducted through studio analysis using several thematic maps such as drainage pattern, slope, and geological map and also satellite images. Based on the results, it can be seen that the research area has parallel drainage pattern. The parallel drainage pattern shows that the research area is an elongated landform. In addition, it also shows that the research area is composed by relatively hard rocks such as volcanic rocks. It is consistent with the results of previous geological research which show that the research area consists of several types of volcanic rock. The characteristics of drainage patterns, slopes, and rock types are interrelated so that analysis of drainage pattern is important ...
International Journal of Scientific Research in Science and Technology, 2017
Cikapundung sub-watershed is one of the sub-watersheds at the upper of the Citarum River adjacent... more Cikapundung sub-watershed is one of the sub-watersheds at the upper of the Citarum River adjacent to an active regional fault, Lembang Fault. Active fault is a major factor in landform control in area that affected by tectonic activity. Therefore, an approach to identify tectonic activity in the research area through quantitative analysis (morphometry) is required. The morphometric analysis used to identify Index of active tectonics (IAT) uses four parameters, namely: Asymmetry factor (Af), Ratio of valley width and valley height (Vf), Basin shape index (Bs), and Mountain front sinuosity (Smf). Based on the parameters of Index of active tectonics (IAT), it can be concluded that 10 basins of the Cikapundung sub watershed has a class of low tectonic activity which may still be affected by the active Lembang fault. However, its existence should be noticed by the surrounding community and government, because the major earthquakes can occur anytime. In addition, the variation of Smf and Vf values caused by lithologic responses that are less resistant to weathering and erosion.
Penggunaan lahan merupakan salah satu upaya pemanfaatan lahan, namun akan terhambat apabila dipen... more Penggunaan lahan merupakan salah satu upaya pemanfaatan lahan, namun akan terhambat apabila dipengaruhi oleh kendala seperti bencana geologi, air tanah langka, kemiringan lereng curam hingga terjal, dan kekuatan fondasi buruk. Penelitian ini dilakukan karena masih sedikitnya penelitian terdahulu dalam pengembangan penggunaan lahan berupa kawasan pemukiman, industri, pertanian, pendidikan, dan sebagainya di wilayah Utara Gunung Malabar (Bandung Selatan). Penelitian ini bertujuan untuk memberikan arahan dalam tata guna lahan. Data penelitian yang digunakan mengacu data primer, sekunder, dan tersier dengan terlebih dahulu melakukan pengumpulan informasi mengenai wilayah penelitian, berupa riwayat bencana geologi, ketersediaan air tanah, curah hajan dan litologi penyusun. Metoda yang digunakan dalam penelitian ini yaitu metoda kualitatif dengan mengumpulkan dan menghasilkan data deskriptif, selain itu digunakan metoda kuantitatif berupa metoda studio dengan melakukan analisis statistik ...
Penelitian difokuskan untuk mengetahui pengaruh litologi terhadap kajian morfotektonik Sub DAS Ci... more Penelitian difokuskan untuk mengetahui pengaruh litologi terhadap kajian morfotektonik Sub DAS Cikapundung Bagian Hulu. Metode yang digunakan meliputi perhitungan Smf dan Vf melalui analisis data topografi. Secara umum berdasarkan perhitungan kelokan muka pegunungan (SMF) serta perbandingan lebar-tinggi lembah (VF) dari 10 Sub DAS Cikapundung menunjukan adanya nilai indikasi patahan aktif kelas tektonik lemah, namun terdapat perbedaan variasi nilai SMF dan VF yang signifikan menunjukan adanya pengaruh respon litologi terhadap kajian morfotektonik daerah penelitian. Satuan litologi pasir tufaan (Qyd), tuffa berbatuapung (Qyt), dan endapan kolluvium (Qc) memiliki nilai Smf dan Vf yang relatif lebih tinggi dibandingkan satuan litologi hasil vulkanik tua tak teruraikan (Qvu), dan satuan hasil vulkanik muda tak teruraikan (Qyu) yang didominasi oleh lava dan breksi. Nilai Smf dan Vf yang lebih besar tersebut terjadi akibat adanya faktor respon litologi yang kurang resisten sehingga proses...
Kabupaten Bandung Barat adalah salah satu daerah yang dianggap potensial dan menjadi representasi... more Kabupaten Bandung Barat adalah salah satu daerah yang dianggap potensial dan menjadi representasi kondisi perekonomian yang sedang berkembang. Hal tersebut dapat dibuktikan dari tingginya kegiatan perekonomian dan perindustrian yang ada. Namun di tengah tingginya kegiatan perekonomian, sektor UMKM dirasa belum cukup optimal dalam pemasarannya. Untuk meningkatkan potensi UMKM di daerah Citatah dan sekitarnya, perlu upaya atau program berkelanjutan bagi masyarakat. Pelaksanaan kegiatan PPM terintegrasi riset bertujuan untuk membuka wawasan masyarakat untuk dapat mengenal kondisi daerahnya, mengetahui potensi usaha apa saja yang dapat dikembangkan, serta menjadi media pembelajaran sekaligus tukar gagasan. Pelaksanaan PPM dilakukan dengan metode observasi lapangan melalui kegiatan KKN Kewirausahaan Unpad, diskusi langsung dan tukar gagasan dengan masyakarat dan perangkat kelurahan setempat, hingga sosialisasi kepada masyarakat Cipatat. Kegiatan ini juga dilakukan dengan studi literatur ...
Central Sulawesi is part of active tectonic as a product of subduction, which produce geological ... more Central Sulawesi is part of active tectonic as a product of subduction, which produce geological phenomena such as volcanism and tectonic activity. Palu-Koro fault section passing through the center of Sulawesi Island in Central Sulawesi town of Palu right divides into two parts, east and west. Central Sulawesi is one of the areas with a high level of seismicity in Indonesia. Geographically, the study area lies between 119 o 47’ 31.891’’ East Longitude to 120 o 1’ 46.488’’ East Longitude and 1 o 12’ 15.714’’ South Latitude to 0 o 50’ 20.922’’ South Latitude. The research aims to find geomorphological configuration in the study area, Geological structure of study area, relationship between earthquake epicenters with the fault in research area. Mapping methods that used are measurement of geological data include strike/dip, megascopic rock description, taking photographs and field test of statistical data to prove there is a relation between seismic data and the Fault which is located...
Abstrak Secara fisik, garam adalah padatan berwarna putih yang berbentuk kristal yang merupakan k... more Abstrak Secara fisik, garam adalah padatan berwarna putih yang berbentuk kristal yang merupakan kumpulan senyawa dengan bahagian terbesar Natrium Chlorida (> 80%) serta senyawa lainnya seperti Magnesium Chlorida, Magnesium Sulfat, Calsium Clorida. Garam mempunyai sifat karakteristik hidroskopis sehingga mudah menyerap air. Dari penelitian yang telah dilaksanakan, garam dapat meningkatkan daya serap tanah terhadap air, mempertahankan permeabilitas dan mengurangi plastisitas tanah ketika basah. Untuk mengetahui pengaruh garam terhadap nilai kembang susut tanah lempung, diadakanlah penelitian di Laboratorium, garam yang digunakan adalah garam dapur beryodium merk " Octopuss " , sampel tanah lempung diambil pada sekitar ruas jalan By Pass KM 17-18 kedalaman 1 m, komposisi garam dalam tanah adalah 0%, 10%, 30% dan 50% dari berat kering tanah dengan masa perawatan 3 hari, pengujian terdiri dari uji sifat fisis dan uji sifat mekanis dari tanah asli maupun tanah yang telah dicampur dengan beberapa variasi garam dapur. Hasil pengujian menunjukan, semakin tinggi porsentase garam dalam tanah dapat menurunkan nilai-nilai batas cair (LL), batas plastis (LL), indeks plastisitas (PI), kadar air optimum, pengembangan dan tekanan pengembangan, pada 30% garam nilai pengembangan sudah mencapai nol, sedangkan nilai batas susut (SL), fraksi tertahan saringan no. 200 dan kepadatan kering maksimum tanah cenderung meningkat.
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