Journal of Seismology

, Volume 7, Issue 1, pp 99–114

Source mechanism of the 22/11/1995 Gulf of Aqaba earthquake and its aftershock sequence

  • A. Hofstetter
  • H.K. Thio
  • G. Shamir
Article

Abstract

The Gulf of Aqaba earthquake occurred on 22/11/1995 with MW = 7.2 and was the largest event to occur along the Dead Sea Transform in at least a century. We determined the source mechanism of the event based on the inversion of the P and SH waveforms observed by teleseismic stations. Our solution consists of 2 similar subevents, where the first exhibits a left-lateral strike-slip motion with a normal component and the second subevent shows an almost pure left-lateral strike-slip motion along the gulf major fault system. The total seismic moment is 7.7 × 1026 dyne-cm, with source duration of 15 seconds. The aftershock sequence was recorded by the regional broad band stations BGIO and JER, of the Israel Seismic Network, and KEG, of the MEDNET regional network for earthquakeswith MW > 4.0. Aftershock epicenter seems to cluster mainly in the Eilat basin and the Aragonese basin. The dominant mechanism indicates left-lateral strike slip motion along the gulf trend, similar to the mainshock.

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Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • A. Hofstetter
    • 1
  • H.K. Thio
    • 2
  • G. Shamir
    • 1
  1. 1.Geophysical Institute of IsraelLodIsrael
  2. 2.URS GreingrPasadenaU.S.A

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