scholarly journals Geothermal Systems Characteristics in Pesanggrahan Area, Bawang Distric, Batang Regency, Based on Geology and Geochemistry Analysis

2019 ◽  
Vol 125 ◽  
pp. 14002
Author(s):  
Rakhmadi Sulistyanto ◽  
Udi Harmoko ◽  
Gatot Yuliyanto
Keyword(s):  
Hot Springs ◽  
Hot Spring ◽  
Descriptive Analysis ◽  
Hot Water ◽  
Geothermal System ◽  
Water Type ◽  
Geothermal Systems ◽  
Volcanic System ◽  
Geothermal Fluid ◽  
Chloride Water

Research conducted at Pesanggrahan area, Sangubanyu Village, Bawang District, Batang Regency with geographical coordinates at 7°5'00 "00 S - 7°7'30" 00 S, and 109 ° 56'00 "E-109°58'30"E, with an area of around 25 Km². Research methods used quantitative and qualitative methods with descriptive analysis, geological and geochemical analysis. Geochemical fluid samples were taken in manifestations hot springs Pesanggrahan and hot water samples in Sibanteng and Sileri Crater to determine the relationship with geothermal systems in this area. Geomorphology divided into two geomorphology units, they are steep slope and sloping hill. Stratigraphy can be divided into three lithologies, which are andesite breccia, tuff breccia, and tuff sandstone. Based on fluid geochemical characteristics of manifestations, it can be interpreted that hot spring of Pesanggrahan area is outflow zone with bicarbonate-chloride water type, Sibanteng Crater and Sileri Crater, include upflow zone with water type sulfate for Sibanteng Crater, bicarbonate-sulfide water type for Sileri Crater. Environmental source geothermal fluid Pesanggrahan from the magmatic volcanic process. Sources geothermal fluid in Pesanggrahan, Sibanteng and Sileri Crater from meteoric water. Estimated temperature Pesanggrahan in the interval 50-100°C, Sileri Craters 160-180°C, and Sibanteng Craters 140-150°C. The Conceptual model of Pesanggrahan includes a geothermal system that associated with volcanic system and high relief liquid dominated system.

scholarly journals Natural State Modeling of Singapore Geothermal Reservoir

2012 ◽  
Vol 3 ◽  
pp. 34-40
Author(s):  
Hendrik Tjiawi ◽  
Andrew C. Palmer ◽  
Grahame J. H. Oliver
Keyword(s):  
Hot Springs ◽  
Hot Spring ◽  
High Heat ◽  
Hot Water ◽  
Geothermal Reservoir ◽  
Natural State ◽  
Geothermal System ◽  
Fuel Price ◽  
The Cost ◽  
Engineered Geothermal System

 The existence of hot springs coupled with the apparent anomalous high heat flow has sparked interest in the potential for geothermal development in Singapore. This geothermal resource may be potentially significant and could be exploited through Engineered Geothermal System (EGS) technology, i.e. a method to create artificial permeability at depth in granitic or sandstone formations as found under Singapore. The apparently ever-increasing fossil fuel price has made the cost of using the EGS technology more viable than it was in the past. Thus, to assess the resource, a numerical model for the geothermal reservoir has been constructed. Mass and heat flows in the system are simulated in 2D with AUTOUGH2.2, and the graphical interface processed through MULGRAPH2.2. Natural state calibration was performed to match both the observed and the expected groundwater profile, and also to match the hot water upflow at the Sembawang hot spring, with simulated flowrate matching the hot spring natural flowrate. The simulation gives an encouraging result of 125 - 150 °C hot water at depth 1.25 – 2.75 km.

scholarly journals The conceptual model of Wae Sano Geothermal field based on geology and geochemistry data

2020 ◽  
Vol 1 (1) ◽  
pp. 56-63
Author(s):  
Fajar Rizki Widiatmoko ◽  
Mochammad Nur Hadi ◽  
Dedi Kusnadi ◽  
Sachrul Iswahyudi ◽  
Fadlin Fadlin
Keyword(s):  
Lake Water ◽  
Hot Springs ◽  
Hot Spring ◽  
Geothermal Field ◽  
Geothermal System ◽  
Water Type ◽  
North East ◽  
The North ◽  
The Rich ◽  
Rock Alteration

Wae Sano volcano is included in the inner Banda arc, Mount Wae Sano is a type C volcano and formed the Sano Nggoang crater lake. The magmatism activity produces geothermal manifestations such as; hot spring, rock alteration, and sulfur deposits, the hottest water temperature is 81 0C, with neutral pH, but the Sano Nggoang Lake water has acid pH. It becomes interesting to examine the characteristics of the geothermal system in that area. The research was conducted by Volcanostratigraphic studies to reconstruct the geological process and Geochemical sampling of hot springs, lake water, ground air, and the soil side to understand the subsurface characterization. The result showing some period of volcano products, with the youngest come from the product of Sano Nggoang 2 that spills its product to on the north-east side of Poco Dedeng volcano. The geochemical analysis shows all manifestations originate from one reservoir, chloride water type, NaCl type of the lake water with a few SO4 influence, presumably, the hot springs supply is influenced by seawater, the estimation of the reservoir has a temperature about ± 230 0C, with dacite and the rich organic sedimentary rock, and located at ± 1456 m from the manifestation, the isothermal section shows the rate of temperature increase at 97.07 m / 10 0C. The hypothetical resource is counted about 1,488.6 kWe.

scholarly journals Magmatism and Geothermal Potential in Pandan Volcano East Java Indonesia

2019 ◽  
Vol 2 (2) ◽  
pp. 50
Author(s):  
Isao Takashima ◽  
Dwi Fitri Yudiantoro
Keyword(s):  
Igneous Rock ◽  
Hot Springs ◽  
Hot Water ◽  
Geothermal System ◽  
Geothermal Fluid ◽  
Additional Information ◽  
Geothermal Potential ◽  
High K ◽  
Petrographic Method ◽  
Using Data

Pandan volcano is a volcano formed on Tertiary sedimentary rocks from the Kendeng zone deposited in the basin of East Java. In addition to generating petroleum potentials, such as Cepu and Bojonegoro oil fields, this area also generates geothermal potential. As a source of heat from the geothermal system is igneous rock formed from the magmatism process. The type of rock formed by the process of magmatism in the Pandan geothermal system is basaltic-andesitic and hornblende andesite are medium-high K calk alkaline affinity located in the island arc. The interaction of hot rock from post magmatism process with hydrothermal fluid resulted in the manifestation of hot springs and calcite travertine in the study area. Prediction of the subsurface temperature of hot water from geothermometer silica analysis contained in Banyukuning and Jarikasinan show cristobalite Beta equilibrium (70oC) and quartz temperature (120oC). To study about magmatism and geothermal fluid using petrographic method and petrochemical analysis (X-ray fluorescence spectrometry method) to the sample of igneous rock. While to study the fluid type and geothermometer of geothermal fluid using data from previous researchers. This research study is expected to provide additional information on the field of geothermal and magmatism in this area.

scholarly journals Study of Geothermal Maronge, Sumbawa West Nusa Tenggara

2017 ◽  
Author(s):  
Romi Aprianto
Keyword(s):  
Hot Springs ◽  
Chemical Properties ◽  
Geothermal Gradient ◽  
Temperature Limit ◽  
Research Area ◽  
Hot Water ◽  
Geochemical Data ◽  
Water Type ◽  
High Enthalpy ◽  
Chloride Water

This study aims to determine the physical characteristics, analyze chemical properties, determine the type, estimate subsurface temperature, estimate geothermal gradient, and examine the use of hot springs in Maronge, Sumbawa, West Nusa Tenggara. Study was undertaken by collecting geological and geochemical data, followed by laboratory analysis. Study area for geothermal characteristization consists of four hot springs. The percentage of ions HCO3-, Cl- and SO42- in hot water samples analyzed showed that the hot springs area of research is the chloride water type. Subsurface temperatures estimated using geothermometer Na - K in the research area on the hot springs 1 to 4 are 210,68oC, 248,45oC, 243,28ºC and 258,91oC, and included in the high enthalpy which has a temperature limit > 225oC. Geothermometer Na - K – Mg showed that the hot springs in the study area are in partial equlibrium. It is further revealed that geothermal energy in the areas of research can be used as a power plant.

scholarly journals An Integrated Survey of the Geochemical Study at the Blawan-Ijen Area, East Java

2021 ◽  
Vol 10 (2) ◽  
pp. 84-93
Author(s):  
Riska Laksmita Sari ◽  
Firman Sabila ◽  
Haeruddin Haeruddin ◽  
Eriska Saputri ◽  
Welayaturromadhona Welayaturromadhona ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Alternative Energy ◽  
Hot Water ◽  
Geothermal System ◽  
Water Type ◽  
Geochemical Analysis ◽  
Near Surface ◽  
Co2 Gas ◽  
Geothermal Fluid ◽  
Sulphate Water

Geothermal energy is a renewable alternative energy source. One of the analyses used to determine the characteristics of a geothermal field is water geochemical analysis. The target of this research is the Blawan-Ijen geothermal prospect area, Bondowoso. The geochemical analysis was carried out using AAS, Spectrophotometer and acid-base titration. This survey shows the characteristics of the geothermal system and geothermal fluid in the Blawan area, Ijen. From the chemical analysis of hot water, we found that the types of geothermal water fluids in the Blawan Ijen area vary. In samples BL1, BL2 and BL5 included in the type of Sulphate Water with the dominant elemental Sulphate (SO4) content is also known as Sulfuric Acid Water (Acid-Sulphate Water). Then for the BL4 sample included in the type of chloride water. This type of water is a type of geothermal fluid found in most areas with high-temperature systems. Areas with large-scale hot springs flowing with high Cl concentrations originate from deep reservoirs and indicate permeable zones in those areas. However, this area may not be located above the main upflow zone. There are several other possibilities, such as topographic influences, which can significantly impact hydrological control. The presence of chlorine gas can also identify high zones' permeable areas (e.g., faults, breccia eruptions or conduit). In contrast, BL3 samples are included in the Bicarbonate Water-type. The element HCO3 (bicarbonate) is the most dominant element (main anion) and contains CO2 gas from the chemical analysis results. HCO3 water is generally formed in marginal and near-surface areas in systems dominated by volcanic rocks, where CO2 gas and condensed water vapour into groundwater. The vapour condensation can either heat the groundwater or be heated by steam (steam heated) to form an HCO3 solution

scholarly journals KARAKTERISTIK FLUIDA DAN GAS PANAS BUMI SEBAGAI PENGARUH PENINGKATAN AKTIVITAS VULKANIK GUNUNGAPI SLAMET (Characteristic Of Geothermal Fluid And Gas Induced By Increased Volcanic Activity Of Slamet Volcano)

2015 ◽  
Vol 5 (3) ◽  
Author(s):  
Mamay Surmayadi
Keyword(s):  
Hot Spring ◽  
Geothermal System ◽  
Volcanic Earthquake ◽  
Geothermal Systems ◽  
Geothermal Fluid ◽  
High Enthalpy ◽  
Central Java ◽  
Volcano Seismicity ◽  
The Status ◽  
Calcite Saturation

AbstrakSejak awal Maret 2014 status aktifitas Gunungapi Slamet di Jawa Tengah dinaikan dari Normal menjadi Waspada seiring dengan peningkatan jumlah gempa vulkanik. Seismisitas Gunungapi Slamet memperlihatkan gempa letusan 1106 kejadian dan gempa hembusan 6857 per hari.  Sementara itu,  gempa vulkanik dalam hanya terekam 2 kali selama periode Maret – Agustus 2014. Sumber gempa berada pada kedalaman antara 1 - 2 km di bawah kawah Gunungapi Slamet sebagai indikasi gempa permukaan. Peningkatan aktifitas vulkanik Slamet menghasilkan pelepasan gas CO2 yang berpengaruh terhadap fluida panas bumi yang ditunjukan dengan terjadinya perubahan keasaman air dari normal menjadi alkalin, pembentukan bualan gas CO2 pada air panas Pancuran 3 di Baturraden, dan peningkatan saturasi kalsit.  Bualan gas CO2 menjadi indikasi terjadinya proses pendidihan pada temperatur 273 C pada kedalaman 454 m di bawah permukaan laut. Kondisi ini menjadikan temperatur reservoir lebih tinggi sebagai indikasi sistem panas bumi Gunungapi Slamet merupakan sistem panas bumi aktif bertemperatur tinggi. Kata kunci : gempa permukaan, fluida panas bumi, bualan gas, saturasi kalsitAbstractSince the beginning of March 2014 the status of activities Slamet volcano in Central Java has been declared from Normal becomes Alert due to significant increase in the number of volcanic earthquakes. Slamet volcano seismicity shows eruption earthquakes as many as 1106, and gas emission earthquakes as many as 6857 events per day. Meanwhile, the deep volcanic earthquake recorded only 2 times during the period March to August 2014. The hypocentre of these earthquake was at a depth of 1-2 km below Slamet volcano crater as an indication of the surface earthquakes.Increased magmatic activity resulted in the release of CO2 gas effect on the geothermal fluid which is indicated by changes in water acidity from normal to alkaline, formation of CO2 bubble gas on Pancuran 3 hot spring at Baturraden area, and calcite saturation enhancement. The presence of CO2 bubble gas is indication of boiling at temperatures 273 C at a depth of 454 m below sea level. This condition makes the reservoir temperature becomes higher as indication that the geothermal system of Slamet volcano is active geothermal systems with high temperature (high enthalpy).Keywords: surface earthquake, geothermal fluid, bubble gas.

scholarly journals Identification of Subsurface Rock Structure of Non-Volcanic Geothermal Systems Based on Gravity Anomalies (Terak Village, Central Bangka Regency)

2021 ◽  
Vol 5 (2) ◽  
pp. 539-543
Author(s):  
Reza Firdaus ◽  
Siska Oktaviyani ◽  
Putri Hardianti ◽  
Tri Kusmita ◽  
Anisa Indriawati
Keyword(s):  
Hot Springs ◽  
Continuation Method ◽  
Bouguer Anomaly ◽  
Gravity Anomalies ◽  
Hot Water ◽  
Reservoir Rock ◽  
Geothermal System ◽  
Geothermal Systems ◽  
Rock Structure ◽  
Free Air Anomaly

Abstract   Geothermal manifestations on Bangka Island are found in the villages of Terak, Pemali, Sungailiat/Pelawan, Dendang, Permis, and Nyelanding. The manifestation of hot water in Terak Village, Central Bangka Regency is in the form of 3 hot springs with a surface temperature of 55ᵒC this research is to be carried focus on the structure of the subsurface rock layers using the geophysical method, namely the gravity method. The data used are topography and Free Air Anomaly. The data processing is in the form of Bouguer Correction and Terrain Correction to obtain the Complete Bouguer Anomaly (CBA) value. Then the CBA value is separated from regional anomalies and residual anomalies using the upward continuation method, as well as 2D modeling interpretation (forward modeling). From the research results, it is known that the subsurface rock structure of the non-volcanic geothermal system in Terak Village in the form of sandstone (2.28 – 2.49 gr/cm3) at a depth of 0 – 1.44 km is estimated as caprock, granite (2.77 – 2.78 gr/cm3) at a depth of 0 – 1.8 km is estimated as reservoir rock, and diorite rock (2.87 – 2.99 gr/ cm3) at a depth of 0 – 2 km is estimated as basement rock.    

scholarly journals Integrated Resistivity and Ground Penetrating Radar Observations of Underground Seepage of Hot Water at Blawan-Ijen Geothermal Field

2016 ◽  
Vol 2016 ◽  
pp. 1-14 ◽  
Author(s):  
Sukir Maryanto ◽  
Ika Karlina Laila Nur Suciningtyas ◽  
Cinantya Nirmala Dewi ◽  
Arief Rachmansyah
Keyword(s):  
River Flow ◽  
Hot Springs ◽  
Hot Spring ◽  
Depth Resolution ◽  
Hydrothermal Activity ◽  
Geothermal Field ◽  
Hot Water ◽  
Geothermal System ◽  
Ground Penetrating ◽  
Reliable Methods

Geothermal resource investigation was accomplished for Blawan-Ijen geothermal system. Blawan geothermal field which located in the northern part of Ijen caldera presents hydrothermal activity related with Pedati fault and local graben. There were about 21 hot springs manifestations in Blawan-Ijen area with calculated temperature about 50°C. We have performed several geophysical studies of underground seepage of hot water characterization. The geoelectric resistivity and GPR methods are used in this research because both of them are very sensitive to detect the presence of hot water. These preliminary studies have established reliable methods for hydrothermal survey that can accurately investigate the underground seepage of hot water with shallow depth resolution. We have successfully identified that the underground seepage of hot water in Blawan geothermal field is following the fault direction and river flow which is evidenced by some hot spring along the Banyu Pahit river with resistivity value less than 40 Ωm and medium conductivity.

scholarly journals Investment Analysis of Willingness to Pay as Development Effort of The Hot Spring Tourism “Cipanas” of Subang Village, Subang Sub-District, Kuningan Regency, West Java Province

2021 ◽  
Vol 4 (2) ◽  
pp. 243
Author(s):  
Willfridus Demetrius Siga ◽  
Yusuf Siswantara
Keyword(s):  
Willingness To Pay ◽  
Capital Investment ◽  
Hot Springs ◽  
Good Governance ◽  
Hot Spring ◽  
Contingent Valuation Method ◽  
Descriptive Analysis ◽  
Market Price ◽  
Hot Water ◽  
Development Effort

The management of natural resources in terms of ecological, social and economic functions and maintaining the aesthetic value of an object and the environment by encouraging the quality of the environment and the sustainability of rural life can be a value of pride and identity of a village. “Cipanas” Hot Spring Tourism Object in Subang Village, Subang District, Kuningan Regency is managed by the local Village Business Entity (BUMDes). This tourism destination is one of the village development efforts for the common welfare (bonnum commune) both economically, socially and sustainably, it needs good governance and capital / investment support. This study aims to analyze the investment of visitors or service users of hot springs in the form of willingness to pay using the Contingent Valuation Method (CVM) to estimate the costs to be incurred by visitors, and multiple regression methods are used to analyze these factors. what factors influence the visitor's willingness to pay. This type of research uses descriptive analysis with a quantitative approach. The results showed that: 1) female consumers, middle-aged, have a Bachelor's or Diploma's latest education, have an employee status, and high income have the highest willingness to pay in a price range that is more than the WTP value, 2) Consumers are willing to pay above the price offered because it has the belief that the hot spring tourism area provides many benefits, 3) The average WTP value is greater than the average market price. This shows that there is an excess price that consumers are willing to pay. 4) The factors that significantly influence the willingness to pay for Cipanas hot water tourism are gender and monthly income. In addition, 52% of respondents are willing to pay for the development of a tourist attraction for the hot spring "Cipanas" in Subang Village.   

scholarly journals Origin of the low-medium temperature hot springs around Nanjing, China

2021 ◽  
Vol 13 (1) ◽  
pp. 820-834
Author(s):  
Jun Ma ◽  
Zhifang Zhou
Keyword(s):  
Hot Springs ◽  
Hot Spring ◽  
Hot Water ◽  
Geothermal Water ◽  
Geological Condition ◽  
Medium Temperature ◽  
Rock Interaction ◽  
Karst Landform ◽  
Karst Landforms ◽  
Development And Management

Abstract The exploration of the origin of hot spring is the basis of its development and utilization. There are many low-medium temperature hot springs in Nanjing and its surrounding karst landform areas, such as the Tangshan, Tangquan, Lunshan, and Xiangquan hot springs. This article discusses the origin characters of the Lunshan hot spring with geological condition analysis, hydrogeochemical data, and isotope data. The results show that the hot water is SO4–Ca type in Lunshan area, and the cation content of SO4 is high, which are related to the deep hydrogeological conditions of the circulation in the limestone. Carbonate and anhydrite dissolutions occur in the groundwater circulation process, and they also dominate the water–rock interaction processes in the geothermal reservoir of Lunshan. The hot water rising channels are deeply affected by the NW and SN faults. Schematic diagrams of the conceptual model of the geothermal water circulation in Lunshan are plotted. The origin of Tangshan, Tangquan, and Xiangquan hot springs are similar to the Lunshan hot spring. In general, the geothermal water in karst landforms around Nanjing mainly runs through the carbonate rock area and is exposed near the core of the anticlinal structure of karst strata, forming SO4–Ca/SO4–Ca–Mg type hot spring with the water temperature less than 60°C. The characters of the hot springs around Nanjing are similar, which are helpful for the further research, development, and management of the geothermal water resources in this region.

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