THE 1966-1970 AND 1991-1992 ERUPTIONS OF RINCON-DE-LA-VIEJA, COSTA-RICA - EXAMPLE OF THE RECURRENT ACTIVITY OF A HYDROMAGMATIC SYSTEM

Authors
BOUDON G RANCON JP KIEFFER G SOTO GJ TRAINEAU H ROSSIGNOL JC
Citation
G. Boudon et al., THE 1966-1970 AND 1991-1992 ERUPTIONS OF RINCON-DE-LA-VIEJA, COSTA-RICA - EXAMPLE OF THE RECURRENT ACTIVITY OF A HYDROMAGMATIC SYSTEM, Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 322(2), 1996, pp. 101-108
Citations number
7
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes → ACNP
ISSN journal
12518050
Volume
322
Issue
2
Year of publication
1996
Pages
101 - 108
Database
ISI
SICI code
1251-8050(1996)322:2<101:T1A1EO>2.0.ZU;2-R
Abstract
Historical eruptions of Rincon de la Vieja, Costa-Rica, were explosive and originated from a summit crater, which is partially filled by a l ake. Our study demonstrates the hydromagmatic character of the 1966-19 70 and 1991-1992 eruptions. They result from the interaction between a shallow magma body, the crater lake and an active hydrothermal system . The most serious hazard during future eruptions is primary mudflows in the valleys on the northern flank, caused by the expulsion of the l ake water by a violent explosion.