000012359 001__ 12359
000012359 005__ 20141205160046.0
000012359 04107 $$aeng
000012359 046__ $$k2008-10-12
000012359 100__ $$aZolfaghari, Mohammad R
000012359 24500 $$aGPS-Measured Slip Rates VS. Seismic Moment Released by Past Seismicity along Alborz Mountain Range in Iran

000012359 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000012359 260__ $$b
000012359 506__ $$arestricted
000012359 520__ $$2eng$$aThe area under study in this paper covers the northern boundary of Central Iranian Block which coincides with the Alborz Mountains. This belt has been responsible for several known catastrophic earthquakes in the past. The Manjil Earthquake of June 20, 1990 with over 50,000 human casualties and more than $7biliion of economic damage is an example of such events in Alborz. The occurrence of moderate to large earthquakes in the Alborz indicates that significant portion of the shortening between Iran and Eurasia takes place in the Alborz. In this study, the records of historical earthquakes along Alborz are used to calculate and plot the geographical distribution of seismic moment released in time. A two dimensional distribution function is proposed and used here to spread the seismic moment along causative tectonic features. Using accumulated seismic moment, the average slip rates across seismogenic faults are estimated for 32 sub-zones along the Alborz Mountains and western Kopet Dag. The estimated horizontal slip rate of 4-5 mm/year is in good agreement with the geodetic vectors recently estimated from a regional GPS survey in this region. The study also reveals geographical variation of slip rate along some 900 km length of this zone which may suggest appearance of seismic gaps or areas with aseismic nature. The completeness of the historical earthquake catalogue and its reliability with regard to the estimates of earthquake magnitudes, locations and rupturing systems are among many plausible factors controlling the credibility of such results. Therefore, any conclusions derived from these results remain as reliable as the data used for the analyses.

000012359 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012359 653__ $$aSeismic moment rate, Alborz, Iran, GPS slip rate

000012359 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000012359 720__ $$aZolfaghari, Mohammad R
000012359 8560_ $$ffischerc@itam.cas.cz
000012359 8564_ $$s1645040$$uhttps://invenio.itam.cas.cz/record/12359/files/07-0106.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 07-0106.
000012359 962__ $$r9324
000012359 980__ $$aPAPER