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Evidence of a recent rapid subsidence in the S–E Cyclades (Greece): An effect of the 1956 Amorgos earthquake?
Author(s)
Language
English
Obiettivo Specifico
3.3. Geodinamica e struttura dell'interno della Terra
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
/39-40 (2012)
ISSN
0278-4343
Electronic ISSN
1873-6955
Publisher
Elsevier Science Limited
Pages (printed)
27-40
Issued date
May 15, 2012
Keywords
Abstract
An underwater geomorphological survey along the coasts of six Cycladic islands (Sifnos, Antiparos, Paros, Naxos, Iraklia and Keros) revealed widespread evidence of a recent 30–40 cm submergence, part of which may have seismic origin. Comparison with information reported from earthquakes having affected the area suggests that at least part of the recent submergence might be an effect of the 1956 Amorgos earthquake. Modelling of the co-seismic and short-term post-seismic effects of the earthquake revealed that part of the observed subsidence may be explained in some of the islands by a fast post-seismic relaxation of a low-viscosity layer underlying the seismogenic zone. However far-field observations are underestimated by our model, and may be affected by a wider deformation field induced by the largest aftershock of the Amorgos sequence, or by other earthquakes.
Type
article
File(s)
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Name
1-s2.0-S0278434312000751-main.pdf
Size
2.02 MB
Format
Adobe PDF
Checksum (MD5)
358c618ca0c9dfc66920405ca71a9cac