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Seismicity patterns associated with the September 10th, 2008 Qeshm earthquake, South Iran
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Berggrundsgeologi.ORCID-id: 0000-0003-1744-7004
2012 (engelsk)Inngår i: International journal of earth sciences, ISSN 1437-3254, E-ISSN 1437-3262, Vol. 101, nr 8, 2215-2223 s.Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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 shows a precursory seismic quiescence preceding the 2008 Qeshm earthquake that observed for one 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.

sted, utgiver, år, opplag, sider
2012. Vol. 101, nr 8, 2215-2223 s.
Emneord [en]
Seismicity patterns – b value – Z value – Qeshm earthquake – Earthquake precursors, Zagros
HSV kategori
Forskningsprogram
Geovetenskap med inriktning mot mineralogi, petrologi och tektonik; Geofysik med inriktning mot seismologi
Identifikatorer
URN: urn:nbn:se:uu:diva-173603DOI: 10.1007/s00531-012-0771-6ISI: 000310232100010OAI: oai:DiVA.org:uu-173603DiVA: diva2:524326
Tilgjengelig fra: 2012-05-01 Laget: 2012-05-01 Sist oppdatert: 2017-12-07bibliografisk kontrollert

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