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Evidence of a dyke‐sheet intrusion at Stromboli Volcano Inferred through continuous tilt
Author(s) -
Bonaccorso Alessandro
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1998gl900115
Subject(s) - geology , seismology , volcano , tiltmeter , earthquake swarm , intrusion , induced seismicity , aeolian processes , strombolian eruption , seismometer , impact crater , inversion (geology) , epicenter , tectonics , lava , geomorphology , geochemistry , amplitude , physics , quantum mechanics , astronomy
A tiltmeter, installed in the northern sector of the island of Stromboli (Aeolian archipelago, Tyrrhenian Sea), recorded a co‐seismic offset at the time of the main shock (M L 3.7) of the 7 November, 1994 swarm located 5 km north of the island. During the three months following this event a transient tilt anomaly, which was interpreted as due to a lateral intrusion and modelled through a dyke‐sheet dislocation, was recorded. The tilt data were used in an analytical inversion based on a propagating tensile source with length and width increasing in time. The final result is consistent with the tectonic and structural framework of the volcano area.