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3D Deep Electrical Resistivity Tomography of the Lusi Eruption Site in East Java
Author(s) -
Mazzini Adriano,
Carrier Aurore,
Sciarra Alessandra,
Fischanger Federico,
WinartoPutro Anton,
Lupi Matteo
Publication year - 2021
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2021gl092632
Subject(s) - geology , geothermal gradient , sedimentary rock , electrical resistivity tomography , breccia , seismology , fault (geology) , geomorphology , geochemistry , paleontology , electrical resistivity and conductivity , engineering , electrical engineering
Lusi is a sediment‐hosted geothermal system relentlessly erupting since May 2006 in the East Java back‐arc sedimentary basin. Lusi provides the unprecedented opportunity to study the development of the early phases of a new‐born piercement structure and its impact on society. In order to investigate the shallow plumbing system of this large‐scale eruption, we deployed a pool of 25 IRIS V‐Fullwavers to conduct a 3D deep electrical resistivity tomography extending over ∼15 km 2 around the eruption site. The inverted data reveal the structure of the subsided area hosting the region where a mix of groundwater, mud breccia, hydrocarbons and boiling hydrothermal fluids are stored. Our investigation also points out the link between a well‐developed fault system and the upwelling of the deep‐seated fluids that initiated, and still drive, the development of the new‐born Lusi eruption.