Geomorphic Indexes of Tectonic Activity Relative through The Analysis Quantitative in Cisanggarung Watershed, Kuningan District, West Java, Indonesia

2021 ◽  
pp. 367-375
Author(s):  
Ajeng Sekarkirana Pramesti Kameswara ◽  
Nana Sulaksana ◽  
Murni Sulastri ◽  
P. P. Raditya R.
Keyword(s):  
Activity Index ◽  
Shape Index ◽  
Research Area ◽  
Tectonic Activity ◽  
West Java ◽  
High Class ◽  
Watershed Area ◽  
Average Value ◽  
Active Tectonic ◽  
Class 1

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 in sub-watershed 14, with Smf values 1.26, Vf 0.77, Af 15.69, Bs 1.01. Class 3 around 54.16% of the watershed area (155.03 km2) is located in sub-watersheds 2, 3, 6, 7, 8, 10, 11, 12, with an average value of Smf 2, Vf 1.54, Af 51.77, Bs 1.75, and Class 4 about 2.71% of the watershed area (7.76 km2) is located in sub- watersheds 4, 5, 9, 13, with an average value of Smf 2.25, Vf 8.18, Af 55.2, Bs 1.65. The results of the morphometric analysis indicated that the study area was mostly affected by tectonics and erosion.

scholarly journals TECTONIC GEOMORPHOLOGY OF THE KARANGSAMBUNG AREA, CENTRAL JAVA, INDONESIA

2021 ◽  
Vol 36 (4) ◽  
pp. 85-105
Author(s):  
Edi Hidayat ◽  
Dicky Muslim ◽  
Zufialdi Zakaria ◽  
Haryadi Permana ◽  
Dimas Aryo Wibowo
Keyword(s):  
Drainage Basin ◽  
Activity Index ◽  
Shape Index ◽  
Tectonic Activity ◽  
Tectonic Geomorphology ◽  
Geological Data ◽  
Eurasian Plate ◽  
Central Java ◽  
Hypsometric Integral ◽  
Geological Conditions

Karangsambung, located in Central Java, Indonesia has complex geological conditions of the tectonic evolution of Java Island due to the subduction process of the India-Australia plate with the Eurasian plate in the Cretaceous-Paleocene. The tectonic movements in the subduction zone have resulted in diverse geological structures and rock types and impact the morphological shape of the study area. The level of tectonic activity in the study area can be determined using a tectonic geomorphological approach. A digital elevation model and geographic information systems are used for geomorphic data processing. Geological data observations were also carried out in the form of river terraces. Seven geomorphic index parameters have been calculated to determine the youngest tectonic activity through the relative tectonic activity index (IAT) of the study area: the ratio of the valley floor width to the valley height, the drainage basin asymmetry, the river gradient-length index, the basin shape index, mountain front sinuosity, drainage density, and the hypsometric integral/hypsometric curve. The IAT score is divided into four classes which are class 1 (0%) very highly, class 2 (13%) highly, class 3 (56%) moderately, and class 4 (31%) low. The IAT shows that the research area is categorized as an active tectonic area so that the morphology formed is more influenced by tectonic activity than erosion. Geological data analysis on uplifted and deformed river terrace outcrops shows that the study area is affected by neotectonic activity.

scholarly journals Earthquake Swarm Analysis around Mt. Salak, West Java, Indonesia, Using BMKG Data from August 10 to November 24, 2019

2021 ◽  
Vol 873 (1) ◽  
pp. 012002
Author(s):  
Pepen Supendi ◽  
Nanang T. Puspito ◽  
Andri Dian Nugraha ◽  
Sri Widiyantoro ◽  
Chalid Idham Abdullah ◽  
...  
Keyword(s):  
Earthquake Swarm ◽  
Tectonic Activity ◽  
Double Difference ◽  
Volcanic Area ◽  
Regional Network ◽  
Local Magnitude ◽  
West Java ◽  
Thrust Faulting ◽  
Time Period ◽  
Active Tectonic

Abstract Earthquake swarms commonly come approximately active tectonic and volcanic area. Interestingly, the swarm events occurred ~23 km southwest from Mt. Salak-Bogor, West Java, Indonesia, from August 10 to November 24, 2019, and were recorded by local/regional network of the Indonesian Agency for Meteorology, Climatology, and Geophysics (BMKG). Our previous study showed that in this area a destructive ML 4.6 earthquake with thrust faulting occurred on September 8, 2012. The double-difference method was applied to update the hypocenter locations from the BMKG data. In the time period of ~3.5 months, we relocated 79 swarm events with ~9.4 km depth average for local magnitude (ML) 2.2 to 4.2. The source mechanism result for selected events shows a strike-slip faulting. Our interpretation is that these swarm events are probably related to stress change due to volcano-tectonic activity.

scholarly journals IMPLEMENTING OF ANALYTICAL STRUCTURAL METHODS SYNTHETIC (SAS) TO IMPROVE THE ABILITY OF READING BEGINNING OF ELEMENTARY SCHOOL STUDENTS

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Neni Hermita, Dr., M.Pd. (Scopus ID: 57196096141) ◽  
Astri Widyanthi ◽  
Otang Kurniaman ◽  
Gustimal Witri
Keyword(s):  
Elementary School ◽  
Elementary School Students ◽  
Reading Ability ◽  
School Students ◽  
Group Design ◽  
Average Value ◽  
Class 1 ◽  
Experimental Type ◽  
Initial Reading ◽  
Structural Methods

This research is motivated by the problem of the low ability to read the beginning of students, so that the SAS method is applied so that it can help students in the success of reading the beginning. The purpose of this study was to determine the differences in pretest and posttest by applying synthetic analytical structural methods (SAS) in reading the beginning of elementary school students and to determine the increase in pretest and posttest in reading the beginning of students. This type of research is a pre-experimental type of pretest-posttest one group design, which is an experiment that is only carried out in only one group, without comparison. This study was conducted in class 1 with 34 students. Based on the results of the study it was found that the average reading ability before being treated (pretest) was 51.77 while the average reading ability after treatment (posttest) was 88.41 and the average value of gain normality was 0.76 which including the high category and the results of hypothesis testing using t-test with tcount=51,080 and ttable=2,0345 can be concluded tcount>ttable, then reject H0 means significant. This means that there is an increase in initial reading in class I students who are significant between before (pretest) and after (posttest) applying the Synthetic Analytical Structural (SAS) method.SAS method, read beginning, elementary school

scholarly journals SOSIAL EKONOMI DAN LINGKUNGAN PERIKANAN BUBU DI DESA KARANGSONG KABUPATEN INDRAMAYU, JAWA BARAT

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Muhammad Fitri Rizky ◽  
Zuzy Anna ◽  
Achmad Rizal ◽  
Asep Agus Handaka Suryana
Keyword(s):  
Environmental Analysis ◽  
Financial Analysis ◽  
Primary Data ◽  
Social Aspect ◽  
Fishing Gear ◽  
Environmental Condition ◽  
West Java ◽  
Environment Analysis ◽  
Average Value ◽  
Trap Fishery

Penelitian ini bertujuan untuk menganalisis kondisi sosial, ekonomi dan lingkungan perikanan bubu dan mencari tahu faktor apa yang berpengaruh terhadap kondisi sosial ekonomi dan lingkungan perikanan bubu. Penelitian dilaksanakan di Desa Karangsong, Kabupaten Indramayu, Provinsi Jawa Barat pada bulan Februari tahun 2018 dengan jumlah responden sebanyak 60 orang nelayan alat tangkap bubu. Pengambilan data dilakukan melalui wawancara dengan kuesioner untuk mendapatkan data primer mengenai kondisi perikanan bubu. Analisis sosial meliputi aspek sosio demografi, institusional dan konflik. Analisis finansial meliputi analisis pendapatan dan B/C ratio serta dilakukan analisis regresi untuk mengetahui hubungan antara beberapa variabel input. Analisis lingkungan dilakukan berdasarkan pandangan nelayan mengenai dampak pengoperasian bubu terhadap lingkungan. Aspek sosial menunjukkan nelayan bubu Karangsong tidak memiliki kelompok, ditemukan konflik alat tangkap dan konflik terkait kegiatan perikanan dan hasil tangkapan yang tidak dilaporkan aktifitasnya ke TPI maupn PPI. Hasil analisis finansial didapatkan pendapatan nelayan berkisar antara Rp1.532.000 - Rp5.401.600 dan nilai B/C Ratio rata rata per jenis kapal adalah 2.05 untuk 3 GT, 5.1 untuk 4 GT dan 5.6 untuk 6 GT. Hasil analisis lingkungan diketahui 100% nelayan memiliki perspektif bahwa perikanan bubu ramah lingkungan.Title: Socio-Economic and Environment Analysis of Trap Fishery  Will Karangsong Village Indramayu of West Java This research was conducted in Karangsong, Indramayu, West Java in February 2018 with 60 respondents of traps fishermen. This research aims to analyze the socio-economic and environmental condition of fishing traps and tried to find out what factors influencing the conditions. Primary data were collected through questionnaires and interviews about the condition of fishing traps. Social analysis of the research includes demography, institution and conflict, while financial analysis includes income analysis and B/C ratio as well as regression analysis to find out correlation between inputs. Environmental analysis was built upon fishermen’s perspective about how fishing traps affect the environment. Social aspect of the research found that fishermen did not have any group, and there are many conflicts especially related to fishing gear and unreported fishing. Results in financial analysis found that fishermen’s income  range between IDR 1.532.000 - IDR 5.401.600 and average value of B/C Ratio for 3 GTs, 4 GTs and 6 GTs were 2.05, 5.1 and 5.6, respectively. Environmental analysis indicated that 100% of fishermen perceive that fishing traps are environmentally friendly. 

scholarly journals Late Miocene to Pliocene Tsunami Deposits in Tegal Buleud, South Sukabumi, West Java, Indonesia

2019 ◽  
Vol 13 (12) ◽  
pp. 80
Author(s):  
Yan Rizal ◽  
Aswan Aswan ◽  
Jahdi Zaim ◽  
Mika R. Puspaningrum ◽  
Wahyu D. Santoso ◽  
...  
Keyword(s):  
Late Miocene ◽  
Flame Structure ◽  
Tectonic Activity ◽  
Tsunami Deposit ◽  
Size Distributions ◽  
Volcanic Island ◽  
Tsunami Deposits ◽  
West Java ◽  
Foraminiferal Assemblage ◽  
Grain Size Distributions

Java is a volcanic island arc formed by the northwards subduction of the Eurasian and Australian Plates. Due to this active subduction, Java has been frequently shocked by earthquakes, which might induce tsunami events. However, there are hardly any ancient geological records of tsunami events in the area. This study aims to determine the presence and to identify sedimentary characters of tsunami deposit in Tegal Buleud, South Sukabumi, West Java. In the study area, there were 4 tsunami layers which were found as thin intercalation within the claystone layer of the Bentang Formation. Those paleotsunami deposits characterized by the occurrence of irregular/disturbed structure such as siltstone rip up, clay clasts, and flame structure occur in normal graded bedding sandstone layer. The grain-size distributions show bimodal and multimodal patterns, with mixing of marine microfossils from inner and middle neritic. The planktonic foraminiferal assemblage indicates that the age of the sediment comparable to N19 (equivalent to Late Miocene - Early Pliocene, at about 5.33 – 3.6 Ma), suggested that these paleotsunami layers were deposited due to the Mio-Pliocene tectonic activity. All the paleotsunami deposits found in Study area are the first and oldest tsunami deposit recorded in Java even in Indonesia. With the discovery of the previously unexplored Late Miocene to Pliocene tsunami deposits found in the study area, the result of this study can be used as a reference for the identification of the Tertiary tsunami deposits present in other parts of Indonesia.

scholarly journals MORPHOTECTONIC EVALUATION OF SIRCH MOUNTAINS USING WATER BASIN GEOMORPHIC INDICES

2021 ◽  
Vol 13 (2) ◽  
pp. 208-214
Author(s):  
Nafise HOSEINI ◽  
◽  
Shahram BAFTI ◽  
Reza DERAKHSHANI ◽  
Mohammad GHANBARIAN ◽  
...  
Keyword(s):  
Information System ◽  
Form Factor ◽  
Geographical Information System ◽  
Active Tectonics ◽  
Geographical Information ◽  
Tectonic Activity ◽  
Mountainous Region ◽  
Large Area ◽  
Active Tectonic ◽  
Morphotectonic Indices

Morphotectonic indices are useful instruments for investigating the effect of tectonic activity in a certain region. Calculation of these indicators using the advantages of Geographical Information System, GIS, in a large area is useful for detecting potential disorders related to active tectonics. This method is useful in regions on which few morphotectonic studies have been conducted. An example of such areas can be the watersheds of the Sirch mountainous region. The watersheds of the Sirch region located in Central Iran’s zone in the southeast of Iran are a very ideal zone to evaluate the concepts of these indicators in the prediction of the relative tectonic activity according to the investigation of drainage systems or mountain fronts. Based on the values of the calculated indices including Form Factor (FF), Compaction Coefficient (CC), Ratio of Circularity (RC), Ratio of Elongation (RE), relative Basin Height (BH), and Ruggedness Number (RN), a final indicator called Active Tectonic Indicator (ATI) is obtained. The latter is a combination of the abovementioned indicators and evaluates the morphotectonic activity based on the shape of the watersheds. By measuring and combining these indicators, the tectonic activity stage of the Sirch region was determined by analyzing the watersheds of this region.

scholarly journals PENERAPAN MODEL BELAJAR COOPERATIVE SNOWBALL THROWING DALAM PEMBELAJARAN TEMATIK KELAS 1

2020 ◽  
Vol 5 (2) ◽  
pp. 258-268
Author(s):  
Nur Laely
Keyword(s):  
Learning Outcomes ◽  
Learning Model ◽  
Average Score ◽  
Test Results ◽  
Average Value ◽  
The Third ◽  
Class 1 ◽  
Learning Test ◽  
Thematic Learning ◽  
Academic Year

Thepurpose of this study was to determine the Application of Cooperative Snowball Throwing Learning Model in Thematic Learning Class 1 at MIN 3 Banyumas Academic Year 2019-2020. The type of research data used in this study is a quantitative-qualitative approach (mexing method). The subjects of this study were class I MIN 3 Banyumas Lessons in 2019-2020 totaling 33 students. The techniques used in data collection are interview, documentation, observation and test techniques. The results showed that the application of the Cooperative Snowball Throwing Learning Model could improve the thematic learning outcomes at MIN 3 Banyumas in 2019-2020. This can be proven by the learning outcomes for each cycle. In cycle I, the average score of student learning test results was 67.73, the lowest score was 45.00 and the highest score was 90.00. This is known by comparing the pre-cycle value with the value of Cycle I, the test results where the value of Cycle I is greater than the pre-cycle of the average value, namely: 67.73> 55.30. Whereas in the second cycle, the average test score was 75.91, while the lowest score was 55.00 and the highest score was 95.00. this can be known by comparing the value of the first cycle with the second cycle, the test results in which the value of the second cycle test is greater than the first cycle with an average value of 75.91> 67.73. And in the third cycle it can be seen that the average value of the test results is 83.79, while the lowest value is 65.00 and the highest value is 100.00.

scholarly journals ANALISIS NILAI TAMBAH PRODUK TURUNAN MADU PADA CV. MADU APIARI MUTIARA CIMANGGIS, DEPOK, JAWA BARAT

2019 ◽  
Vol 11 (1) ◽  
pp. 62-78
Author(s):  
Fahmi Noval Amar ◽  
Eny Dwiningsih ◽  
Armaeni Dwi Humaerah
Keyword(s):  
Value Added ◽  
West Java ◽  
Average Value ◽  
Data Analyses ◽  
Business Efficiency ◽  
C Value ◽  
Productivity Ratio

The purposes of this study are: 1) to determine the ratio of added values, productivities, and distribution margins resulting from any derived products of honey, and 2) to determine the efficiency of derived products of honey during the period of analysis from 2012 until 2013. The research was carried out in the CV. Madu Apiari Mutiara located in Depok, West Java. The hayami method, the productivity ratio and the R/C ratio were employed to analyze the data. Results from data analyses showed that the average value added per production of the whole product is Rp 20,892.90, - or the value added ratio 35.65 % on an average. The product with the highest productivity of all is honey shampoo. Overall, the R/C value on an average amounted to 1.90 that means business efficiency of derived products of honey is profitable and feasible to be developed.

scholarly journals Ethnozoological study of the wild pig (Sus spp.) hunting among Sundanese in Upper Citarum Watershed area, West Java, Indonesia

2021 ◽  
Vol 22 (11) ◽  
Author(s):  
Dede Mulyanto ◽  
Oekan Soekotjo Abdoellah ◽  
Johan Iskandar ◽  
Budhi Gunawan
Keyword(s):  
Participant Observation ◽  
West Java ◽  
Watershed Area ◽  
Wild Pigs ◽  
The Past ◽  
Hunting Success ◽  
Depth Interview ◽  
Rural Ecosystem ◽  
The Village ◽  
Wild Pig

Abstract. Mulyanto D, Abdoellah OS, Iskandar J, Gunawan B. 2021. Ethnozoological study of the wild pig (Sus spp.) hunting among Sundanese in Upper Citarum Watershed area, West Java, Indonesia. Biodiversitas 22: 4930-4939. In the past, wild pigs had a high population in the rural ecosystem of West Java. However, the population of wild pigs, particularly Javan warty pig, decreases due to forest destructions and intensive hunting. This study aimed to elucidate the local knowledge on wild pigs, the mode of hunting, and diverse aspects of wild pig hunting. We conducted qualitative methods with ethnozoological approach, including participant observation and in-depth interview. The results showed that based on the local people the wild pig can be divided into four “races”, while based on zoology, two species of wild pig are documented in Java. During hunts all members get specific key roles. Thus, hunting success is increased by division of labor. Hunting wild pigs played an important role in socio-economic and cultural function for the village community. Due to intensive hunting of wild pigs, the population of these animals, particularly the Javan warty pig are decreased, and consequently the socio-economy of this animal in rural ecosystem may decrease ot even disappear.

scholarly journals Use Of The Prebiotic Inulin In The Prevention Of Adverse Signs Of Acute Colitis

2015 ◽  
Vol 65 (3) ◽  
pp. 339-347
Author(s):  
Hijová Emília ◽  
Śoltésová Alena ◽  
Salaj Rastislav ◽  
Kuzma Jozef ◽  
Strojný Ladislav ◽  
...  
Keyword(s):  
Activity Index ◽  
Disease Activity Index ◽  
Coliform Bacteria ◽  
Control Group ◽  
Sprague Dawley ◽  
Acute Colitis ◽  
Colon Tissue ◽  
Diet Intervention ◽  
Average Value ◽  
Glucuronidase Activity

Abstract The aim of this study was to investigate the influence of prebiotic inulin diet intervention on the activity of β-glucuronidase and counts of coliforms and lactobacilli in fresh caecal digesta, cytokine levels (IL-6, IL-8) and transcription nuclear factor kappa beta (NFkB) activities in the colon tissue and blood samples of rats with dextran sulphate sodium (DSS) induced acute colitis. Male Sprague-Dawley rats (8 per group) were randomly divided into three groups: Control, Acute colitis and Prebiotic. Colitis was induced using 5% DSS in drinking water for 7d. DSS application significantly increased the activity of β-glucuronidase (p<0.001), increased counts of coliform bacteria and decreased lactobacilli count (p<0.05) in comparison to the control group. Serum and tissue levels of IL-6 and IL-8 as well as tissue NFkB activities showed an increased expression in the acute colitis group. These results correspond to the average value of the disease activity index score (DAI) and revealed the maximum DAI score (6.5) in the acute colitis group. A decrease in the DAI score (4.13) was observed after application of the prebiotic inulin. Inulin diet intervention positively modified the number of microorganims and decreased β-glucuronidase activity. Colon tissue activities of NFkB were significantly suppressed (p<0.001). The synthesis of proinflammatory cytokines IL-6 (p<0.01) in the serum and in the colon tissue, as well as tissue IL-8 (p<0.05) in the prebiotic group were downregulated. These findings indicate that the dietary intake of inulin suppressed the expression of the observed markers, which play an important role in the inflammatory process, which predisposes to the use of inulin in the prevention or treatment of acute colitis in human and veterinary medicine.

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