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

Authors
/persons/resource/pjousset

Jousset,  P.
ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;
2.2 Geophysical Deep Sounding, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Sule,  R.
External Organizations;

Diningrat,  W.
External Organizations;

/persons/resource/devy

Syahbana,  Devy Kamil
ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/gassner

Gassner,  Alexandra
2.2 Geophysical Deep Sounding, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Akbar,  F.
External Organizations;

/persons/resource/guichard

Guichard,  Sebastien
4.1 Reservoir Technologies, 4.0 Chemistry and Material Cycles, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/nschuck

Schuck,  Nicole
ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Ryannugroho,  R.
External Organizations;

/persons/resource/andri

Hendriyana,  Andri
4.1 Reservoir Technologies, 4.0 Chemistry and Material Cycles, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Kusnadi,  Y.
External Organizations;

Nugraha,  A.
External Organizations;

/persons/resource/muksin

Muksin,  U.
2.2 Geophysical Deep Sounding, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/jaya

Jaya,  M.
ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Pratomo,  B.
External Organizations;

/persons/resource/kerbas

Erbas,  Kemal
ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/dbruhn

Bruhn,  David
ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Citation

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).


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_1182894
Abstract
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.