A receiver function study across the Dead Sea Transform

Details A receiver function study across the Dead Sea Transform A receiver function study across the Dead Sea Transform

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005geoji.160..948m&link_type=abstract

Geophysical Journal International, Volume 160, Issue 6, pp. 948-960.

Astronomy and Astrophysics

Astronomy

18

Crustal Structure, Dead Sea Transform, Mantle Discontinuities

Scientific paper

We report on a receiver function study of the crust and upper mantle within DESERT, a multidisciplinary geophysical project to study the lithosphere across the Dead Sea Transform (DST). A temporary seismic network was operated on both sides of the DST between 2000 April and 2001 June. The depth of the Moho increases smoothly from about 30 to 34-38 km towards the east across the DST, with significant north-south variations east of the DST. These Moho depth estimates from receiver functions are consistent with results from steep- and wide-angle controlled-source techniques. Steep-angle reflections and receiver functions reveal an additional discontinuity in the lower crust, but only east of the DST. This leads to the conclusion that the internal crustal structure east and west of the DST is different. The P to S converted phases from both discontinuities at 410 and 660 km are delayed by 2 s with respect to the IASP91 global reference model. This would indicate that the transition zone is consistent with the global average, but the upper mantle above 410 km is 3-4 per cent slower than the standard earth model.

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