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All Journal MEDIA KONSERVASI Jurnal RISET Geologi dan Pertambangan JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) Jurnal Vokasi Bisnis Digital, Akuntansi Lembaga Keuangan Syariah dan Usaha Perjalanan Wisata

Adjat Sudrajat

Unknown Affiliation

Author-ID : 2284789

Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Social Sciences Other

Published : 6 Documents Claim Missing Document

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Articles

Peningkatan Aktivitas Vulkanik Gunung Api Slamet dan Pengaruhnya Terhadap Sistem Panas Bumi Mamay Surmayadi; Hanik Humaida; Cahya Patria; Adjat Sudrajat; Nana Sulaksana; Mega Fatimah Rosana
Jurnal Lingkungan dan Bencana Geologi Vol 6, No 3 (2015)
Publisher : Badan Geologi

ABSTRAKSejak awal Maret 2014 status aktivitas Gunung Api Slamet di Jawa Tengah dinaikkan dari normal (level I) menjadi waspada (level II) seiring dengan peningkatan jumlah gempa vulkanik. Seismisitas Gunung Api Slamet yang dipantau melalui empat stasiun seismik memperlihatkangempa letusan terekam sebanyak 1.106 kejadian dengan rata-rata 73 kejadian per hari, gempa hembusan terekam sebanyak 6.857 kejadian dengan rata-rata 457 kejadian per hari, sedangkan gempa vulkanik dalam (VA) hanya terekam sebanyak 2 kali selama periode Maret – Agustus 2014. Sumber gempa tersebut berada pada kedalaman antara 1 - 2 km di bawah kawah Gunung Api Slamet sebagai indikasi gempa permukaan. Peningkatan aktivitas magmatik tersebut menghasilkan pelepasan gasCO2 yang berpengaruh terhadap fluida panas bumi yang ditunjukkan dengan terjadinya perubahan keasaman air dari normal menjadi alkalin, pembentukkan bualan gas CO2 pada air panas Pancuran 3 di Baturraden, dan peningkatan saturasi kalsit. Bualan gas CO2 pada air panas Pancuran 3 menjadi indikasi terjadinya proses pendidihan pada temperatur 273° C pada elevasi kedalaman 454 m dibawah permukaan laut. Kondisi ini menjadikan temperatur reservoar menjadi lebih tinggi sebagai indikasi bahwa sistem panas bumi Gunung Api Slamet merupakan sistem panas bumi aktif (active geothermal system) bertemperatur tinggi (high enthalpy).Kata kunci : bualan gas, fluida panas bumi, gempa permukaan, saturasi kalsitABSTRACTSince the beginning of March 2014 the activity status of The Slamet Volcano in Central Java has been declared from normal (level I) to become alert (level II) due tosignificant increase in the number of volcanic earthquakes. The Slamet Volcano seismicity monitored by four seismic stations shows eruption earthquakes as many as 1,106 events with an average of 73 events per day, gas emission earthquakes as many as 6,857 events with an average of 457 events per day, whereas the deep volcanic (VA) earthquake recorded only 2 times during the period of March to August 2014. The hypocentre of these earthquakes was at a depth of 1-2 km below Slamet Volcano crater as an indication of surface earthquakes. Increased magmatic activity resulted in the release of CO2 gas effect on the geothermal fluid indicated by changes in water acidity from normal to alkaline, formation of CO2bubblegas on Pancuran 3 hot springat Baturraden area, and calcite saturation enhancement. The presence of CO2 bubble gas on Pancuran 3 hot springis an indication of a boiling process at the temperature of 273° C at a depth of 454 m below sea level. This condition makes the reservoar temperature becomes higher as an indication that the geothermal system of The Slamet Volcano is an active geothermal systemwith high temperature (high enthalpy).Keywords: bubble gas, geothermal fluid, surface earthquake, calcite saturation

Identifikasi prospek panas bumi berdasarkan Fault and Fracture Density (FFD): Studi kasus Gunung Patuha, Jawa Barat Cyrke A.N. Bujung; Alamta Singaribun; Dicky Muslim; Febri Hirnawan; Adjat Sudrajat
Jurnal Lingkungan dan Bencana Geologi Vol 2, No 1 (2011)
Publisher : Badan Geologi

SARIPenelitian ini bertujuan untuk mengidentifikasi struktur permukaan daerah panas bumi berdasarkan densitas kelurusan, anomali magnetik, dan manifestasi panas bumi di permukaan. Struktur permukaan dianalisis melalui kerapatan lineament di permukaan dengan metode FFD. Lineament ini diasumsikan berasosiasi dengan fracture atau fault di daerah panas bumi yang umumnya tertutup oleh manifestasi permukaan sehingga sulit teridentifikasi. Fault dan fracture ini diasumsikan sebagai bidang lemah yang menjadi jalur pergerakan fluida termal sehingga dapat menjadi petunjuk bagi lokasi daerah permeabel atau reservoir. Berdasarkan metoda FFD yang dikompilasikan dengan data geomagnetik,diketahui bahwa daerah prospek panas bumi berada di daerah Cibuni, Kawah Putih-Kawah Ciwidey.Kata kunci: struktur, lineament, FFD, Panas bumiABSTRACTThis research aims to identify the surface structures of geothermal area based on lineament density, magnetic anomaly and surface manifestation. The surface structures were analyzed through the density of lineaments on the surface with FFD method. The lineaments are assumed associated with fractures or faults found in geothermal areas those are generally covered by surface manifestation which are difficult to be identified. These faults and fractures were assumed as weak plane that act as fluid thermal movement, thereby it can be used as guidance for the location of permeable area or a reservoir. Based on FFD method which was compiled with magnetic data, it is known that the prospect of geothermal area is located at Cibuni, Kawah Putih-Kawah Ciwidey.Keywords: structure, lineament, FFD, Geothermal

KOLABORASI KONSERVASI DI KAWASAN WISATA CIWIDEY Ely Triana; Hadi S Alikodra; Tutut Sunarminto; Adjat Sudrajat
Media Konservasi Vol 19 No 3 (2014): Vol 19, No.3 2014, Media Konservasi
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Collaboration of conservation must be a way in sustainable tourism development. The research aimed to evaluate the factual condition of collaboration of conservation and to formulate the strategies to improve the capacities of collaboration of conservation in Ciwidey tourism area. Analysis of conservation, sustainable tourism and collaboration objective aspects were conducted by distributing quetionnaire and interview the stakeholder. The data were analyzed by score mapping, gap and modified SWOT analysis. The result show that factual condition of collaboration of conservation in three location which are Kawah Putih, TWA Cimanggu and Situ Patenggang were valued fair to passable. The strategies to improve capacities of collaboration of conservation in Ciwidey tourism area are divided in three levels: 1) system level: to make policy which regulate the formation of an institution, for example a forum of conservation and ecotourism which include all stakeholders; and to build an integrated tourism transportation system and public facilities; 2) organization level: to include conservation and sustainable tourism aspects in the organization planning and programs in accordance to their authority and main tasks; 3) individual level: to improve the knowledge and skill of conservation and sustainable tourism for everyone who get involved in tourism activity by way of counseling and training. Keyword: Ciwidey tourism area, Collaboration, Conservation, Strategy, Sustainable tourism.

FORAMINIFERA ASSEMBLAGES AS A MARKER OF MUD ERUPTION SOURCE IN CIUYAH, CINIRU – KUNINGAN, WEST JAVA Vijaya Isnaniawardhani; Faizal Muhamadsyah; Adjat Sudrajat
JURNAL RISET GEOLOGI DAN PERTAMBANGAN Vol 28, No 2 (2018)
Publisher : Indonesian Institute of Sciences

Mud eruptions that rise claystone to sandstone-size fragments, liquid, gas, and heat to the surface have been identified in Ciuyah, Ciniru District, Kuningan. Field observation and sampling were conducted on host rock as well as mud in Ciuyah. Forty-two planktic and forty-two benthic foraminiferal species were identified in rock samples; while 89.28% of them are recorded in mud samples. Foraminifera contained in claystone and sandstone of Pemali and Halang Formations reveals the age of Middle to Late Miocene. Based on their stratigraphic ranges, planktic foraminifera assemblages in mud represent four age-marker groups, there are: older than Zone N.10 / Middle Miocene (indicated by the appearance of Globorotalia archeomenardii), ranges of Zone N.11 – N.12 / Middle Miocene (marked by the appearance of Globorotalia fohsi lobata and Globorotalia praemenardii), ranges of Zone N.13–N.14 / Middle Miocene (Globorotalia siakensis and Globorotalia mayeri), and ranges of Zone N.15–N.17 / Late Miocene (Globorotalia acostaensis acostaensis and Neogloboquadrina dutertrei dutertrei). Benthic foraminifera can be grouped into outer neritic and bathyal typical assemblages. That several age-marker planktic foraminifera groups mixing and deep marine typical benthic occurrence in mud samples is produced by reworking process during turbidity sedimentation, as well as erosion and elution of base- and side-rock composed by Pemali and Halang Formations.Semburan lumpur yang membawa fragmen-fragmen berukuran batulempung hingga batupasir, cairan, gas dan panas ke permukaan telah teridentifikasi di Ciuyah, Kecamatan Ciniru, Kuningan. Observasi lapangan dan pengambilan sampel dilakukan terhadap batuan induk serta lumpur di Ciuyah dan sekitarnya. Empat puluh dua spesies foraminifera planktik dan empat puluh dua spesies bentik teridentifikasi dalam sampel batuan; dengan 89,28% di antaranya terekam dalam sampel lumpur. Foraminifera yang terkandung dalam batulempung dan batupasir Formasi Pemali dan Halang menunjukkan umur Miosen Tengah hingga Akhir. Berdasarkan rentang stratigrafinya, kumpulan foraminifera planktik dalam lumpur menunjukkan empat kelompok penanda umur, yaitu: lebih tua dari Zona N.10 / Miosen Tengah (ditunjukkan oleh kehadiran Globorotalia archeomenardii), rentang Zona N.11 - N.12 / Miosen Tengah (ditandai oleh kehadiran Globorotalia fohsi lobata dan Globorotalia praemenardii), rentang Zona N.13 -N.14 / Miosen Tengah (Globorotalia siakensis dan Globorotalia mayeri), dan rentang Zona N.15 - N.17 / Miosen Akhir (Globorotalia acostaensis acostaensis dan Neogloboquadrina dutertrei dutertrei). Foraminifera bentik dapat dikelompokkan dalam kumpulan neritik luar dan batial. Beberapa kelompok penanda umur foraminifera planktik dan kehadiran bentik laut dalam pada lumpur dihasilkan oleh pengerjaan ulang selama sedimentasi turbidit, serta erosi dan elusi batuan dasar dan batuan samping yang tersusun oleh Formasi Pemali dan Halang.

CONDITION AND DEVELOPMENT OF UNPLANNED TOURISM BUSINESS IN TASIKMALAYA DISTRICT Muhammad Indra Gunawan -; Tutut Sunarminto; Adjat Sudrajat
Media Konservasi Vol 27 No 2 (2022): Media Konservasi Vol 27 No 2 Agustus 2022
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.27.2.42-50

Tourism activities in Tasikmalaya Regency were recorded to experience fluctuations in the number of tourist visits from year to year. There are two classifications of tourist objects in Tasikmayala Regency, namely legal and registered tourist objects and tourist objects that are not legal and not yet registered in the Disparpora Tasikmalaya Regency and the Disparbud of West Java Province. Tourism objects that are not yet legal, have not been recorded, grow from the initiative of tourists or the community, and are not yet well established in their management are referred to as unplanned tourism businesses. The study was conducted to describe the conditions and developments in the unplanned tourism business carried out in three locations, namely Pasir Kirisik, Bukit Panyangrayan, and Bukit Puji Ningrum by conducting direct observations, interviews, and questionnaires. All data collected were then analyzed descriptively covering the general condition of the research location, characteristics of tourists and local communities, perceptions, motivations, preferences, participation, and conditions of business development factors in each research location. The condition of the unplanned tourism business shows that it is running well even though it has not run optimally and is accepted by tourists and the local community. So it is important the role of stakeholders according to their capacity and capability as part of the support system for procedural acceleration of an unplanned tourism business into an established ecotourism business. Key words: acceleration, ecotourism, established, intuitive, tourism business

THE ROLE OF STAKEHOLDERS IN UNPLANNED TOURISM BUSINESS AT TASIKMALAYA REGENCY M. Indra Gunawan; Tutut Sunarminto; Adjat Sudrajat
Acitya: Jurnal Vokasi Bisnis Digital, Akuntansi Lembaga Keuangan Syariah dan Usaha Perjalanan Wisata Vol 2 No 2 (2023): Acitya: Jurnal Vokasi Bisnis Digital, Akuntansi Lembaga Keuangan Syariah dan Usah
Publisher : Fakultas Vokasi Universitas Mayasari Bakti

Show Abstract | Download Original | Original Source | Check in Google Scholar

The state of tourism activities in Tasikmalaya Regency has fluctuated. The fluctuations that occur include the number of tourist visits, as well as the number of tourist sites. There are tourist objects that are not legal and have not been recorded, grew from the initiative of tourists or the community, and are not yet well established in their management which is then referred to as unplanned tourism business. This study examines the role of stakeholders with their various interests and various dynamics. The support for these facilities and services involves many other parties who have their respective roles, functions, and/or interests. The process of accommodating stakeholders is possible to have an impact on the development of unplanned tourism business in Tasikmalaya Regency. Based on the research results, internal stakeholders ensure that the unplanned tourism business from internal factors of business development and sustainability aspects runs optimally. Meanwhile, external stakeholders are supporting parties and play a role in ensuring that external factors of business development take sides and are in line with the vision of developing unplanned tourism business in accelerating procedures to become an established and legal ecotourism and in accordance with sustainability aspects (ecological aspects, social aspects, and environmental aspects). economy).

Co-Authors Alamta Singaribun Cahya Patria Cyrke A N Bujung Dicky Muslim Ely Triana Faizal Muhamadsyah Febri Hirnawan Hadi S Alikodra Hanik Humaida M. Indra Gunawan Mamay Surmayadi Mega Fatimah Rosana Muhammad Indra Gunawan - Nana Sulaksana Tutut Sunarminto Vijaya Isnaniawardhani

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