Evidence for fluid migration as the source of deformation at Campi Flegrei caldera (Italy)

被引：190
|
作者：
Battaglia, M [1 ]
Troise, C
Obrizzo, F
Pingue, F
De Natale, G
机构：
[1] Univ Gottingen, Dept Struct Geol, Gottingen, Germany
[2] Ist Nazl Geofis & Vulcanol Osserv Vesuviano, Naples, Italy
来源：
GEOPHYSICAL RESEARCH LETTERS | 2006年 / 33卷 / 01期
关键词：
D O I：
10.1029/2005GL024904
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
We model the location, geometry and density of the source of the recent geological unrest at Campi Flegrei caldera ( Italy) by inverting levelling, trilateration and gravity measurements collected between 1980 and 1995. The best fitting source for the 1980 - 84 inflation is a horizontal penny-shaped crack with a density 142 to 1115 kg/m(3). The source best fitting the deflation period ( 1990 - 95) is a vertical spheroid with density between 902 and 1015 kg/m(3). These results exclude the intrusion of magma, and indicate the migration of fluid to and from the caldera hydrothermal system as the cause of ground deformation and consequent unrest.
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页数：4
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