Seismicity patterns associated with the September 10th, 2008 Qeshm earthquake, South Iran

The b value of the Gutenberg-Richter relation and the standard deviate, Z , were calculated to investigate the temporal and spatial variations in seismicity patterns associated with the September 10th, 2008 (Mw = 6.1) Qeshm earthquake. The temporal variations of b value illustrate a distinct dramati...

Full description

Saved in:
Bibliographic Details
Published in:International journal of earth sciences : Geologische Rundschau 2012-11, Vol.101 (8), p.2215-2223
Main Authors: Sorbi, Mohammad Reza, Nilfouroushan, Faramarz, Zamani, Ahmad
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Science with specialization in Mineral Chemistry, Petrology and Tectonics
Earth Sciences
Earthquakes
Endogen geovetenskap
Endogenous earth sciences
Geochemistry
Geofysik med inriktning mot seismologi
Geology
Geophysics with specialization in Seismology
Geophysics/Geodesy
Geovetenskap
Geovetenskap med inriktning mot mineralogi, petrologi och tektonik
Mineral Resources
NATURAL SCIENCES
NATURVETENSKAP
Original Paper
Plate tectonics
Sedimentology
Seismic activity
Seismicity patterns – b value – Z value – Qeshm earthquake – Earthquake precursors
Seismology
Spatial distribution
Structural Geology
Zagros
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The b value of the Gutenberg-Richter relation and the standard deviate, Z , were calculated to investigate the temporal and spatial variations in seismicity patterns associated with the September 10th, 2008 (Mw = 6.1) Qeshm earthquake. The temporal variations of b value illustrate a distinct dramatic drop preceding the Qeshm earthquake, and the spatial changes in b value highlight a zone with an abnormally low b value around the epicenter of this event. The cumulative number and Z value as a function of time show a precursory seismic quiescence preceding the 2008 Qeshm earthquake that observed for 1 year in a circle with R  = 50 km around its epicenter. The spatial distribution map of the standard deviate, Z , also exhibits an obvious precursory seismic quiescence region before the 2008 Qeshm event around the epicenter of this event. Interestingly, the precursory seismic quiescence region is approximately consistent with low b value anomaly region, and both have E–W to NE–SW trend. These two precursory anomalies took place in relatively large regions, which were possibly relevant to the preparation zone of the 2008 Qeshm event.
ISSN:1437-3254
1437-3262
1437-3262
DOI:10.1007/s00531-012-0771-6