Dataset Information

Seismic imaging and petrology explain highly explosive eruptions of Merapi Volcano, Indonesia.

ABSTRACT: Our seismic tomographic images characterize, for the first time, spatial and volumetric details of the subvertical magma plumbing system of Merapi Volcano. We present P- and S-wave arrival time data, which were collected in a dense seismic network, known as DOMERAPI, installed around the volcano for 18 months. The P- and S-wave arrival time data with similar path coverage reveal a high Vp/Vs structure extending from a depth of ?20?km below mean sea level (MSL) up to the summit of the volcano. Combined with results of petrological studies, our seismic tomography data allow us to propose: (1) the existence of a shallow zone of intense fluid percolation, directly below the summit of the volcano; (2) a main, pre-eruptive magma reservoir at ??10 to 20?km below MSL that is orders of magnitude larger than erupted magma volumes; (3) a deep magma reservoir at MOHO depth which supplies the main reservoir; and (4) an extensive, subvertical fluid-magma-transfer zone from the mantle to the surface. Such high-resolution spatial constraints on the volcano plumbing system as shown are an important advance in our ability to forecast and to mitigate the hazard potential of Merapi's future eruptions.

SUBMITTER: Widiyantoro S

PROVIDER: S-EPMC6135845 | biostudies-other | 2018 Sep

REPOSITORIES: biostudies-other

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Seismic imaging and petrology explain highly explosive eruptions of Merapi Volcano, Indonesia.

Widiyantoro S S Ramdhan M M Métaxian J-P JP Cummins P R PR Martel C C Erdmann S S Nugraha A D AD Budi-Santoso A A Laurin A A Fahmi A A AA

Scientific reports 20180912 1

Our seismic tomographic images characterize, for the first time, spatial and volumetric details of the subvertical magma plumbing system of Merapi Volcano. We present P- and S-wave arrival time data, which were collected in a dense seismic network, known as DOMERAPI, installed around the volcano for 18 months. The P- and S-wave arrival time data with similar path coverage reveal a high Vp/Vs structure extending from a depth of ≥20 km below mean sea level (MSL) up to the summit of the volcano. Co ...[more]

PMID: 30209278

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Dataset Information

Seismic imaging and petrology explain highly explosive eruptions of Merapi Volcano, Indonesia.

Publications

Seismic imaging and petrology explain highly explosive eruptions of Merapi Volcano, Indonesia.

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