Analysis and Zonation of Land Vulnerability Areas in Pekon Karangrejo Ulubelu Tanggamus Using Microzonation Method

Abstract.Ulubelu Tanggamus is an area that have geothermal energy potential. This region consists of a geological structure in the form of graben and reverse fault formed between Mount Rendingan and Mount Kukusan. Identifications that can be done include surveys to map soil characteristics in shaking responses using microzonation methods. This study aims to analyze the values of dominant frequency, dominant period, Vs30 and amplification. The stages of the research carried out are processing data to obtain dominant frequency, calculating the value of the dominant period, calculating the value of Vs30 and the amplification value, and making a map of the soil vulnerability of the UlubeluTanggamus area. Based on the distribution of the dominant frequency values, the UlubeluTanggamus geothermal area is dominated by a dominant Frequency (F0) >0.5Hz which is expected to be a very thick surface thickness of sediments more than 30m. The distribution of the dominant period value obtained is (T0)>1 where the character of the sedimentary rock type is very soft consisting of alluvial material formed from sedimentation of deltas, top soil, and mud. The distribution of the Vs30 value is dominated by the value of 100 <Vs30<200 and obtains an amplification value of 2<A0<6 times where the area is an area with a moderate risk category to the danger of soil vulnerability.

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Identifikasi Daerah Prospek Panas Bumi dengan Menggunakan Teknik Pengindraan Jauh (Studi Kasus: Kecamatan Cisurupan, Kabupaten Garut)

REKA GEOMATIKA ◽

10.26760/jrg.v2018i1.2661 ◽

2019 ◽

Vol 2018 (1) ◽

Author(s):

Hary Nugroho ◽

Mohamad Farhan Fadhilah

Keyword(s):

Remote Sensing ◽

Brightness Temperature ◽

Geothermal Energy ◽

Energy Demand ◽

Alternative Energy ◽

Geological Structure ◽

Energy Sources ◽

Energy Potential ◽

Alternative Energy Sources ◽

Sensing Technology

ABSTRAKPertambahan jumlah penduduk mengakibatkan meningkatnya kebutuhan akan energi. Sumber energi dari fosil semakin hari semakin menipis sehingga perlu ada upaya pencarian energi terbarukan. Salah satu potensi energi terbarukan yang banyak tersebar di Indonesia adalah energi panas bumi. Indonesia memiliki 40% potensi energi panas bumi dunia. Umumnya daerah prospek panas bumi berada pada daerah vulkanik yang dikelilingi oleh vegetasi rapat. Salah satu cara untuk mengetahui lokasinya adalah menggunakan metode pengindraan jauh. Teknologi pengindraan jauh ini dapat digunakan pada tahap awal identifikasi yang selanjutnya dapat didalami menggunakan teknik geofisika dan geokimia. Citra pengindraan jauh yang digunakan dilakukan analisis melalui suhu kecerahan atau brightness temperature untuk selanjutnya diintegrasikan dengan data kelurusan, struktur geologi, dan manifestasi panas bumi. Hasil dari penelitian ini menunjukkan bahwa daerah prospek panas bumi terletak di kawasan Gunung Papandayan yang mencakup Desa Sirnajaya, Karamatwangi, Cisurupan, Cisero, Cidatar, Sukatani, Cipaganti, dan Sukawargi. Daerah prospek terletak di dataran tinggi dengan suhu kecerahan yang beragam antara 12,8°C-42,8°C.Kata kunci: panas bumi, pengindraan jauh, suhu kecerahan, manifestasiABSTRACTPopulation growth has resulted in increased energy demand. Energy sources from fossils will soon run out, so we need renewable alternative energy sources. One of the potential renewable energy that is widely spread in Indonesia is geothermal energy. Indonesia has 40% of the world's geothermal energy potential. Generally, geothermal prospect areas are in volcanic areas surrounded by dense vegetation. How to find out the location, one of which is the application of remote sensing methods. This remote sensing technology can be used at the initial stage of identification which can then be explored using geophysical and geochemical techniques. The image was processed and analyzed to obtain brightness temperature. These results were then integrated with geological structure, and geothermal manifestations. The prospect area obtained is located in the area of Mount Papandayan which includes the villages of Sirnajaya, Karamatwangi, Cisurupan, Cisero, Cidatar, Sukatani, Cipaganti, and Sukawargi. This region is located in the highlands with brightness temperature varying between 12.8°C-42.8°C.Keywords: geothermal, remote sensing, brightness temperature, manifestation

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ASSESSING GEOTHERMAL ENERGY POTENTIAL IN SOUTHERN UTAH USING THE TRACE ELEMENT CHEMISTRY OF GRANITIC INTRUSIONS

10.1130/abs/2017am-305051 ◽

2017 ◽

Author(s):

Chesley Philip Gale ◽

◽

Jason F. Kaiser

Keyword(s):

Trace Element ◽

Geothermal Energy ◽

Energy Potential ◽

Trace Element Chemistry ◽

Element Chemistry ◽

Granitic Intrusions

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Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

Applied Sciences ◽

10.3390/app11062691 ◽

2021 ◽

Vol 11 (6) ◽

pp. 2691

Author(s):

Nataša Ćuković Ignjatović ◽

Ana Vranješ ◽

Dušan Ignjatović ◽

Dejan Milenić ◽

Olivera Krunić

Keyword(s):

Geothermal Energy ◽

Architectural Design ◽

Pannonian Basin ◽

Thermal Power ◽

Chemical Compositions ◽

Energy Potential ◽

Southeastern Part ◽

Geothermal Resources ◽

Heating And Cooling ◽

Different Temperatures

The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come from different types of reservoirs having different temperatures and chemical compositions. At the first site, a geothermal spring with a temperature of 20.5 °C is considered for heat pump utilization, while at the second site, a geothermal well with a temperature of 54 °C is suitable for direct use. The calculated thermal power, which can be obtained from geothermal energy is in the range of 300 to 950 kW. The development concept was proposed with an architectural design to enable sustainable energy efficient development of wellness and spa/medical facilities that can be supported by local authorities. The resulting energy heating needs for different scenarios were 16–105 kW, which can be met in full by the use of geothermal energy.

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Deep Geothermal Heating Potential for the Communities of the Western Canadian Sedimentary Basin

Energies ◽

10.3390/en14030706 ◽

2021 ◽

Vol 14 (3) ◽

pp. 706

Author(s):

Jacek Majorowicz ◽

Stephen E. Grasby

Keyword(s):

British Columbia ◽

Northwest Territories ◽

Geothermal Energy ◽

Sedimentary Basin ◽

Electrical Power ◽

Foreland Basin ◽

Geothermal Gradient ◽

Energy Potential ◽

Western Canada Sedimentary Basin ◽

Geothermal Heating

We summarize the feasibility of using geothermal energy from the Western Canada Sedimentary Basin (WCSB) to support communities with populations >3000 people, including those in northeastern British Columbia, southwestern part of Northwest Territories (NWT), southern Saskatchewan, and southeastern Manitoba, along with previously studied communities in Alberta. The geothermal energy potential of the WCSB is largely determined by the basin’s geometry; the sediments start at 0 m thickness adjacent to the Canadian shield in the east and thicken to >6 km to the west, and over 3 km in the Williston sub-basin to the south. Direct heat use is most promising in the western and southern parts of the WCSB where sediment thickness exceeds 2–3 km. Geothermal potential is also dependent on the local geothermal gradient. Aquifers suitable for heating systems occur in western-northwestern Alberta, northeastern British Columbia, and southwestern Saskatchewan. Electrical power production is limited to the deepest parts of the WCSB, where aquifers >120 °C and fluid production rates >80 kg/s occur (southwestern Northwest Territories, northwestern Alberta, northeastern British Columbia, and southeastern Saskatchewan. For the western regions with the thickest sediments, the foreland basin east of the Rocky Mountains, estimates indicate that geothermal power up to 2 MWel. (electrical), and up to 10 times higher for heating in MWth. (thermal), are possible.

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Seismic Methods in Geothermal Water Resource Exploration: Case Study from Łódź Trough, Central Part of Poland

Geofluids ◽

10.1155/2019/3052806 ◽

2019 ◽

Vol 2019 ◽

pp. 1-11 ◽

Cited By ~ 3

Author(s):

Tomasz Maćkowski ◽

Anna Sowiżdżał ◽

Anna Wachowicz-Pyzik

Keyword(s):

Estimation Error ◽

Geophysical Methods ◽

Petroleum Industry ◽

Geological Structure ◽

Seismic Survey ◽

Energy Potential ◽

Geothermal Resources ◽

Geothermal Waters ◽

Seismic Methods ◽

Geophysical Surveys

The geothermal waters constitute a specific type of water resources, very important from the point of view of their thermal energy potential. This potential, when utilized, supplies an ecological and renewable energy, which, after effective development, brings many environmental, social, and industrial benefits. The key element of any geothermal investment is the proper location of geothermal installation, which would guarantee the relevant hydrogeothermal parameters of the water intake. Hence, many studies and analyses are carried out in order to characterize the reservoir parameters, including the integrated geophysical methods. For decades, the geophysical surveys have been the trusty recognition methods of geological structure and petrophysical parameters of rock formations. Thus, they are widely applied by petroleum industry in exploration of conventional and unconventional (shale gas/oil, tight gas) hydrocarbon deposits. Advances in geophysical methods extended their applicability to many other scientific and industrial branches as, e.g., the seismic survey used in studies of geothermal aquifers. The following paper presents the opportunities provided by seismic methods applied to studies of geothermal resources in the central Poland where the geothermal waters are reservoired in both the Lower Cretaceous and the Lower Jurassic sedimentary successions. The presented results are obtained from a network of seismic profiles. An important advantage of the seismic survey is that they may support the selection of an optimal location of geothermal investment and determination of the geometry of geothermal aquifer. Furthermore, the application of geophysical methods can significantly contribute to the reduction of estimation error of groundwater reservoir temperature.

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Techno-Economic Simulation of a Geothermal Energy Generation System at the Machin Volcano in Colombia

10.48011/sbse.v1i1.2431 ◽

2020 ◽

Author(s):

Hernando Enrique Rodriguez Pantano ◽

Valentina Betancourt ◽

Juan S. Solís-Chaves ◽

C. M. Rocha-Osorio

Keyword(s):

Geothermal Energy ◽

Energy Generation ◽

Generation System ◽

Energy Potential ◽

Public And Private ◽

Mountain Ranges ◽

Cost Of Energy ◽

Geothermal Potential ◽

Economic Simulation ◽

Private Investors

Colombian geothermal potential for power generation is interesting due to the presence of the three Andean mountain ranges and the existence of active volcanoes in junction with springs and underground reservoirs with the consequent closeness of available hydrothermal water-wells. The Machin volcano is a small mountain placed in the middle of the country, that has a considerable geothermal potential with wells in a temperature range of 160 to 260C. For that reason, a techno-economic simulation for a Geothermal Energy Generation System is proposed in this paper, using for that the System Advisor Model software. The purpose of this research is to present a more encouraging picture for public and private investors interested in exploiting this energy potential in Colombia. Simulation results include technical and economic aspects as annual and monthly energy production, geothermal resource monthly average temperature, and the Time Of Delivery Factors are also considered. Some tables with system configuration, plant and pump costs, Capacity Factor, and real and nominal Levelized Cost of Energy are also shown.

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Geological Structure Analysis to Determine the Direction of the Main Stress at Western Part of Kolok Mudik, Barangin District, Sawahlunto, West Sumatera

Journal of Geoscience Engineering Environment and Technology ◽

10.24273/jgeet.2017.2.1.20 ◽

2017 ◽

Vol 2 (1) ◽

pp. 46

Author(s):

Miftahul Jannah ◽

Adi Suryadi ◽

Muchtar Zafir ◽

Randi Saputra ◽

Ihsanul Hakim ◽

...

Keyword(s):

Structure Analysis ◽

Normal Fault ◽

Geological Structure ◽

Reverse Fault ◽

Geological Structures ◽

The North ◽

Main Stress

On the study area there are three types of structure, those are fault, fold and joint. Types of fault were found in the study area, reverse fault with the strike/dip is N215oE/75o, normal fault has a fault directions N22oE and N200oE with pitch 35o, and dextral fault with pitch 10o and strike N219oE. Fold and joint structures used to determine the direction of the main stress on the study area. Further, an analysis used stereonet for data folds and joints. So that from the data got three directions of main stress, those are Northeast – Southwest (T1), North – South (T2) and Southeast – Northwest (T3). On the Northeast – Southwest (T1) stress there are four geological structures, anticline fold at ST.3 , syncline folds at ST. 13a, ST. 13b, ST. 13c and ST. 33, chevron fold at ST. 44 and joint at ST. 2. On the North – South (T2) stress there are three geological structures, those are syncline fold at ST. 35, anticline fold at ST. 54 and joints at ST. 41, ST. 46 and ST. 47. On the Southeast – Northwest (T3) stress were also three geological structures, those are chevron fold at ST 42a, overturned fold at ST. 42b, syncline fold at ST. 42c and joints at ST. 5 and ST. 34.

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DIG: A New Project to De-risk Ireland’s Geothermal Energy Potential

10.5194/egusphere-egu21-12254 ◽

2021 ◽

Author(s):

Brian O’Reilly ◽

Duygu Kiyan ◽

Javier Fullea ◽

Sergei Lebedev ◽

Christopher J. Bean ◽

...

Keyword(s):

Geothermal Energy ◽

Thermal Structure ◽

Geochemical Data ◽

Wide Angle ◽

Energy Potential ◽

Geothermal Resources ◽

Secondary Fracture ◽

Uncertainty Estimates ◽

Passive Seismic ◽

Warm Springs

Potential deep (greater > 400 m) geothermal resources, within low to medium temperature settings remain poorly understood and largely untapped in Europe. DIG (De-risking Ireland&#8217;s Geothermal Potential) is a new academic project started in 2020, which aims to develop a better understanding of Ireland&#8217;s (all-island) low-enthalpy geothermal energy potential through the gathering, modelling and interpretation of geophysical, geological, and geochemical data.The overarching research objectives, are to (i) determine the regional geothermal gradient with uncertainty estimates across Ireland using new and existing geophysical and geochemical-petrophysical data, (ii) investigate the thermochemical crustal structure and secondary fracture porosity in Devonian/Carboniferous siliciclastic and carbonate lithologies using wide-angle seismic, gravity and available geochemical data, and (iii) identify and assess the available low-enthalpy geothermal resources at reservoir scale within the Upper Devonian Munster Basin, i.e. the Mallow warm springs region, using electromagnetic and passive seismic methods, constrained by structural geological mapping results. A new hydrochemistry programme to characterise deep reservoir water composition will add further constraints.In the island-scale strand of the project, we are using Rayleigh and Love surface waves in order to determine the seismic-velocity and thermal structure of the lithosphere, with crustal geometry. Together with the legacy surface heat flow, gravity, and newly available long-period MT data, this will place bounds on the shape of regional geotherms. Radiogenic heat production and thermal conductivity measurements for Irish rocks will be incorporated into an integrated geophysical-petrological model, within a scheme able to provide critical temperature uncertainties. Regional-scale research will exploit legacy wide-angle seismic data across the Laurentian and Avalonian geological terranes. Geochemical and petrophysical databases will guide in-house Bayesian inversion tools, to estimate probabilities on model outcomes.Local-scale research will derive subsurface electrical conductivity and velocity images from electromagnetic and passive seismic surveys from the northern margin of the Munster Basin, where the thermal waters tend to have a distinctive chemical fingerprint and a meteoric origin based on available geochemical and isotopic compositions. This local focus aims to directly image fault conduits and fluid aquifer sources at depth, within a convective/conductive region associated with warm springs. This will determine the scale of the geothermal anomaly and hence will evaluate the potential for local- and industrial-scale space heating in the survey locality.This presentation will give an overview of this new research project and will deliver preliminary multi-parameter crustal models produced by the thermodynamic inversions that fit the surface-wave and surface elevation data. The project is funded by the Sustainable Energy Authority of Ireland under the SEAI Research, Development & Demonstration Funding Programme 2019 (grant number 19/RDD/522) and by the Geological Survey Ireland.

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