• temporal variation of vp / vs as a preqursory in august 11 , 2012 ahar – varzaqhan earthquake

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1394/02/01
    • تاریخ انتشار در تی پی بین: 1394/02/01
    • تعداد بازدید: 523
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     on august 11, 2012, two earthquakes of mw = 6.5 and mw = 6.3 took place in part of the western alborz seismotectonic province, ahar-varzaqhan region.we processed the phase data recorded in 8 seismic stations during 2006-2012 using wadati method. temporal variations of vp/vs were studied as a tool in earthquake precursory researches in these earthquakes. we impose a number of restrictions on the computation. the number of stations involved in this process is more than 3 and recorded earthquakes with m ≥ mc. under these restrictions, the study shows that vp/vs in and around ahar-varzaqhan study area normal-low-normal process a few months before main shock occurrence.

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