CORRELATION BETWEEN LOCAL STRESS FIELD AND SUMMITERUPTION OF MOUNT ETNA: THE 27 MARCH 1998 EVENT
Pages: 251 - 260
Authors: SANTO LA DELFA, VALERIA INNOCENTE, GIUSEPPE PATANE, JEAN CLAUDE TANGUY
Abstract: The eruption on 27 March 1998 at the NE Crater, from 21h22 to 23h59 GMT, with Strombolian explosions and lava fountains, was the first of a long series of eruptive manifestations with relatively high energy, which affected the volcano after the 1991–1993 lateral event. The seismic activity occurred late in 1997 and the first months of 1998 constitutes, in the authors’ opinion, a precursor of this eruption and the successive eruptive events at the SE Crater, since it is believed to be associated with a conspicuous magma uprise.
The continuous epicentre migration, in a brief time span, in various sectors of the volcano owing to the dynamics of different tectonic trends, is considered related to a rapid fluctuation in the local stress field, probably responsible for the sudden onset and rapid end of the eruptive event.
Keywords: stress field, focal mechanisms, earthquakes, eruption, Mt Etna
Download PDF document
Show Text Version
Volume 54 no. 4 / August 2003
TOMAS MIKUS, MARTIN CHOVANHYDROTHERMAL Sb-Au MINERALIZATION IN THE STRAZOVSKE VRCHY MOUNTAINS (MALA MAGURA, WESTERN CARPATHIANS)
MATEJ DOLENEC, BOJAN OGORELEC, SONJA LOJENUPPER CARBONIFEROUS TO LOWER TRIASSIC CARBON ISOTOPIC SIGNATURE IN CARBONATE ROCKS OF THE WESTERN TETHYS (SLOVENIA)
ANNA VOZAROVA, IGOR TUNYIEVIDENCE OF THE ILLAWARRA REVERSAL IN THE PERMIAN OF THE HRONIC NAPPE (WESTERN CARPATHIANS, SLOVAKIA)
TEA KOLAR-JURKOVSEK, BOGDAN JURKOVSEKCLYPEINA BESICIM PANTIC (CHLOROPHYTA, DASYCLADALES) FROM THE "RAIBL BEDS" OF THE WESTERN KARAVANKE MOUNTAINS (SLOVENIA)
ARTUR WOJTOWICZ, SOFIYA P. HRYNIV, TADEUSZ MAREK PERYT, ANDRIY BUBNIAK, IHOR BUBNIAK, PETRO M. BILONIZHKAK/Ar DATING OF THE MIOCENE POTASH SALTS OF THE CARPATHIAN FOREDEEP (WEST UKRAINE): APPLICATION TO DATING OF TECTONIC EVENTS
SANTO LA DELFA, VALERIA INNOCENTE, GIUSEPPE PATANE, JEAN CLAUDE TANGUYCORRELATION BETWEEN LOCAL STRESS FIELD AND SUMMITERUPTION OF MOUNT ETNA: THE 27 MARCH 1998 EVENT
MIROSLAV HONTY, VLADIMIR SUCHA, LUBICA PUSKELOVAPOTASSIUM FIXATION IN SMECTITES BY WETTING AND DRYING IN NaCl SOLUTION