Pre-explosive conduit conditions during the 2010 eruption of Merapi volcano (Java, Indonesia)

Mélissa Drignon; Tonin Bechon; Laurent Arbaret; Alain Burgisser; Jean-Christophe Komorowski; Caroline Martel; Hayden Miller; Radit Yaputra

Pre-explosive conduit conditions during the 2010 eruption of Merapi volcano (Java, Indonesia)

Mélissa Drignon ¹ Tonin Bechon ^{2, 3} Laurent Arbaret ^{2, 3} Alain Burgisser ^{4, *} Jean-Christophe Komorowski ⁵ Caroline Martel ^{2, 3} Hayden Miller ⁶ Radit Yaputra ⁷

* Corresponding author

1 CEOAS - College of Earth, Ocean and Atmospheric Sciences [Corvallis]

2 ISTO - Institut des Sciences de la Terre d'Orléans - UMR7327

3 Magma - UMR7327

ISTO - Institut des Sciences de la Terre d'Orléans - UMR7327

4 ISTerre - Institut des Sciences de la Terre

5 IPGP - Institut de Physique du Globe de Paris

6 Division of Geological and Planetary Sciences [Pasadena]

7 Pusat Vulkanologi dan Mitigasi Bencana Geologi

Abstract : The 2010 eruption is the largest explosive event at Merapi volcano since 1872. The high energy of the initial 26 October explosions cannot be explained by simple gravitational collapse and the paroxysmal explosions were preceded by the growth of a lava dome not large enough to ensure significant pressurization of the system. We sampled pumice from these explosive phases and determined the pre-explosive depths of the pumices by combining textural analyses with glass water content measurements. Our results indicate that the magma expelled was tapped from depths of several kilometers. Such depths are much greater than those involved in the pre-2010 effusive activity. We propose that the water-rich magma liberated enough gas to sustain the explosivity. Our results imply that the explosive potential of volcanoes having dome-forming, effusive activity is linked to the depth from which fresh magma can be evacuated in a single explosion, regardless of the evacuated volume.

Document type :

Journal articles

Domain :

Sciences of the Universe [physics] / Earth Sciences / Volcanology

Complete list of metadatas

Cited literature [32 references] Display Hide Download

https://hal-insu.archives-ouvertes.fr/insu-01391386
Contributor : Nathalie Pothier <>
Submitted on : Thursday, December 1, 2016 - 2:21:35 PM
Last modification on : Monday, July 1, 2019 - 5:24:04 PM
Long-term archiving on : Tuesday, March 21, 2017 - 3:14:52 AM

Pre-explosive conduit conditions during the 2010 eruption of Merapi volcano (Java, Indonesia)

Files

Identifiers

Collections

Citation

Export

Metrics

605

257

Contact

Pre-explosive conduit conditions during the 2010 eruption of Merapi volcano (Java, Indonesia)

Files

Identifiers

Collections

Citation

Export

Share

Metrics

605

257

Contact