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  Seismic Tomography and Monitoring of Magmatic Geothermal and Natural Hydrothermal Systems in the South of Bandung, Indonesia

Jousset, P., Sule, R., Diningrat, W., Syahbana, D. K., Gassner, A., Akbar, F., Guichard, S., Schuck, N., Ryannugroho, R., Hendriyana, A., Kusnadi, Y., Nugraha, A., Muksin, U., Jaya, M., Pratomo, B., Erbas, K., Bruhn, D. (2015): Seismic Tomography and Monitoring of Magmatic Geothermal and Natural Hydrothermal Systems in the South of Bandung, Indonesia - Proceedings, World Geothermal Congress 2015 (Melbourne, Australia 2015).

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Jousset, P.1, 2, Autor              
Sule, R.3, Autor
Diningrat, W.3, Autor
Syahbana, Devy Kamil1, Autor              
Gassner, Alexandra2, Autor              
Akbar, F.3, Autor
Guichard, Sebastien4, Autor              
Schuck, Nicole1, Autor              
Ryannugroho, R.3, Autor
Hendriyana, Andri4, Autor              
Kusnadi, Y.3, Autor
Nugraha, A.3, Autor
Muksin, U.2, Autor              
Jaya, M.1, Autor              
Pratomo, B.3, Autor
Erbas, Kemal1, Autor              
Bruhn, David1, Autor              
Affiliations:
1ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146052              
22.2 Geophysical Deep Sounding, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_66027              
3External Organizations, ou_persistent22              
44.1 Reservoir Technologies, 4.0 Chemistry and Material Cycles, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146039              

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Schlagwörter: Imaging, seismic tomography, fluid, volcanism, tectonic, earthquakes
 Zusammenfassung: We assess geothermal resources from our understanding of the structure and the dynamics of geothermal reservoirs and hydrothermal systems in the south of Bandung. The co-existence of a large variety of intense surface manifestations like geysers, hot-steaming grounds, hot water pools, and active volcanoes suggest an intimate coupling between volcanic, tectonic and hydrothermal processes in this area. We deployed a geophysical network starting with a network of 30 seismic stations including high-dynamic broadband Güralp and Trillium sensors (0.008 - 100 Hz) and 4 short-period (1 Hz) sensors from October 2012 to December 2013. We extended the network in June 2013 with 16 short-period seismometers. Finally, we deployed a geodetic network including a continuously recording gravity meter, a GPS station and tilt-meters. In this paper we describe the set-up of the seismic and geodetic networks and we discuss first observations and results. The earthquakes locations were first estimated using a non-linear algorithm, and revealed at least 3 seismic clusters. We perform joint inversion of hypocenters and VP velocity 1D and 3D tomography. We discuss the resulting seismic Vp structure and the seismic activity pattern within the area and relate the structure to the distribution of hydrothermal systems. We aim at searching possible structural and dynamical links between different hydrothermal systems. In addition, we discuss possible dynamical implications of those volcanic systems from temporal variations of inferred parameters. The integration of those results allows us to achieve a better understanding of the structures and the dynamics of those geothermal reservoirs. This approach contributes to the sustainable and optimal exploitation of the geothermal resource in Indonesia.

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 Datum: 2015
 Publikationsstatus: Final veröffentlicht
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 Identifikatoren: GFZPOF: p3 PT5 Georesources
GFZPOF: p3 PT7 Ene
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Veranstaltung

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Titel: World Geothermal Congress 2015
Veranstaltungsort: Melbourne, Australia
Start-/Enddatum: 2015-04-19 - 2015-04-25

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Titel: Proceedings
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