Source parameters for moderate earthquakes in the Zagros Mountains with implications for the depth extent of seismicity

Aubreya Adams, Richard Brazier, Andrew Nyblade, Arthur Rodgers, Abdullah Al-Amri

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Six earthquakes within the Zagros Mountains with magnitudes between 4.9 and 5.7 have been studied to determine their source parameters. These events were selected for study because they were reported in open catalogs to have lower crustal or upper mantle source depths and because they occurred within an area of the Zagros Mountains where crustal velocity structure has been constrained by previous studies. Moment tensor inversion of regional broadband waveforms has been combined with forward modeling of depth phases on short-period teleseismic waveforms to constrain source depths and moment tensors. Our results show that all six events nucleated within the upper crust (<11 km depth) and have thrust mechanisms. This finding supports other studies that call into question the existence of lower crustal or mantle events beneath the Zagros Mountains.

Original languageEnglish (US)
Pages (from-to)2044-2049
Number of pages6
JournalBulletin of the Seismological Society of America
Volume99
Issue number3
DOIs
StatePublished - Jun 2009

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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