Magnetic method used in geothermal reservoirs identification in Kasinan-Songgoriti, East Java, Indonesia

Mawarni, Laily; Maryanto, Sukir; Nadhir, Ahmad

doi:10.18280/eesrj.050402

Cited by 8 publications

(7 citation statements)

References 6 publications

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“…Based on this modeling, it can explain the existence of a fault on the left of the model results as a place for geothermal fluid outflow in the study area and forming a manifestation in the form of a hot spring pool at Bukik Gadang same as that obtained by Mawarni (2018) and Zakaria (2016). The shape of the fault formed from the overall modeling is a normal fault with varying depths.…”

Section: Two-dimensional Modelingsupporting

confidence: 57%

“…These faults will eventually be directly related to the origin of the geothermal fluid (reservoir) as the main source of thermal energy for a geothermal system (Fitrochaton Chasanah et al, 2018). There have been several researchers who have successfully used this method in geothermal and fault cases such as Hanafy (2012), Mawarni (2018), Maulidan (2021), andBukhari (2019). This method can be done by measuring the magnetic field on the surface of the geothermal energy area.…”

Section: Introductionmentioning

confidence: 99%

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Identification of Fault Structure in the Vicinity of Bukik Gadang Hot Spring Mount Talang Subdistrict Using Geomagnetic Method

Maulidan

Marzuki

Putra³

2022

jppipa, pendidikan ipa, fisika, biologi, kimia

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Geological structures in the Bukit Gadang geothermal area have been identified using the geomagnetic method to determine the type of fault. Data was measured using a magnetometer in the area with dimensions of 1200 m × 1200 m consisting of 144 points at 12 tracks, and the spacing between points was 100 m. Magnetic anomaly data performed diurnal and IGRF (International Geomagnetic Reference Field) corrections. Furthermore, reduced to poles and continuous upwards processes were carried out to remove noise and separate local and regional anomalies. The magnetic field anomaly in the study area ranges from -1771.8 nT to 1089.9 nT, dominated by negative values, indicating the presence of heat sources and the influence of demagnetization of subsurface rocks. The 2D modeling results show that two primary rocks dominate the study area; pyroclastic flow units and andesite lava rock, which come from the Jantan and Batino volcanic formations. The caprock rock layer was identified in the upper layer with a depth of 850 meters. The reservoir rock layer with low susceptibility values was below the caprock layer. The 3D modeling results show a normal fault with a depth of 300-800 meters or at the border of the Jantan volcanic formation with the Batino volcanic formation. The fault line leads to the southeast-northwest (N160°E). The faults obtained from the 2D and 3D models are suspected to be the outflow of geothermal fluid from the reservoir rock layer and form a manifestation in the form of a hot spring at Bukik Gadang.

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Section: Two-dimensional Modelingsupporting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Identification of Fault Structure in the Vicinity of Bukik Gadang Hot Spring Mount Talang Subdistrict Using Geomagnetic Method

Maulidan

Marzuki

Putra³

2022

jppipa, pendidikan ipa, fisika, biologi, kimia

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“…Kasinan-Songgoriti areas belong to Batu City region, which is surrounded by ancient volcanoes, that are Mount Panderman, Mount Kawi, and Mount Butak [7]. Geological formation in Kasinan-Songgoriti regions is Upper Quaternary Volcanics formation, which consist of volcanic breccias, lava, tuff, tuff breccias, agglomerates, and lava.…”

Section: Fig 2 Geological Map Of Research Areamentioning

confidence: 99%

Gravity Anomaly in Kelud, Kasinan-Songgoriti, and Arjuno-Welirang Volcano Hosted Geothermal Area, East Java, Indonesia

2020

IJITEE

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This study aims to determine the relationship of heat reservoirs in the Kelud, Kasinan-Songgoriti, and Arjuno-Welirang geothermal systems based on gravity data analysis. Gravity data are obtained from Geodetic Satellite (GEOSAT) and European Remote Sensing-1 (ERS-1) Satellite which have been corrected to free air correction. The result of gravity data analysis is in the form of a complete Bouguer anomaly which represents the gravity anomaly below the surface. The results of the complete Bouguer anomaly value obtained were -15,238 mGal to 86,087 mGal. Based on these results, regional anomalies and residual anomalies will be separated to determine the depth of the two anomalies. 3D modeling was carried out based on the complete Bouguer anomaly data to determine the reservoir relationships in the Kelud, Kasinan-Songgoriti, and Arjuno-Welirang geothermal systems.

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“…In addition, magnetic methods can determine geothermal prospects including mapping of hydrothermal alteration zones that show a reduction in magnetization relative to the source rock (Rusli, 2009). Based on research that has been done by Moghaddam et al (2012), Afandi et al (2013), Lestari et al (2016), Hidayat et al (2021), Mawarni et al (2018) and Mahmudi et al (2019) by using the geomagnetic method, the potential in the area around the geothermal prospect can be identified from negative magnetic anomalies, so this method is suitable for detecting geothermal potential as a preliminary survey. Based on these results, it can be used as supporting data and consideration for further surveys, namely complex geophysical surveys and drilling.…”

Section: Introductionmentioning

confidence: 99%

Interpretation of Subsurface Structure Based on the Magnetic Data at Semurup Geothermal Area Kerinci

Maulidan

Suci

Mahendra

et al. 2021

JIF

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The interpretation of subsurface structures in Semurup geothermal area has been carried out using the geomagnetic method. Data were collected in an area of 1500 m Ã— 1400 m consisting of 160 points. The magnetic anomaly value obtained was derived from the total magnetic induction value that has been corrected by IGRF and diurnal variation, then transformed by reduction to equator and upward continuation to remove noise and separate local and regional anomalies. The results of data processing showed the total magnetic field values in the study area ranged from -1730.4 nT to 1909.0 nT. Magnetic anomalies in this study area are dominated by negative values that may be caused by demagnetised rocks (a result of hydrothermal alteration). The results of 2D modeling, it has 5 rock layers that can be classified into 3 main parts of the geothermal system The first and second layers are caprock with a depth of up to 850 meters consisting of sedimentary rock, clay, and sandstone. The third layer is indicated as a reservoir with a depth from 850 to 1450 m and is dominated by sandstone and clay alteration Hot rock in the fourth and fifth layers is dominated by basalt igneous rock and the presence of dacitic lava intrusion from the northeast of the study area at depths below 1450 m, and the Siulak fault as a outflow zone for geothermal fluid. The presence of the caprock, reservoir, hot rock, and fault zones indicates that the Semurup area has geothermal potential and is suitable for further exploration.

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Magnetic method used in geothermal reservoirs identification in Kasinan-Songgoriti, East Java, Indonesia

Cited by 8 publications

References 6 publications

Identification of Fault Structure in the Vicinity of Bukik Gadang Hot Spring Mount Talang Subdistrict Using Geomagnetic Method

Identification of Fault Structure in the Vicinity of Bukik Gadang Hot Spring Mount Talang Subdistrict Using Geomagnetic Method

Gravity Anomaly in Kelud, Kasinan-Songgoriti, and Arjuno-Welirang Volcano Hosted Geothermal Area, East Java, Indonesia

Interpretation of Subsurface Structure Based on the Magnetic Data at Semurup Geothermal Area Kerinci

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