Abstract

2002-08-01 to 2003-08-31
Seismic anisotropy provides a unique link between seismic observations and tectonic deformation processes. Knowledge of the anisotropic structure related to the Dead Sea Transfrom is essential to understand the dynamics of the fault zone. Inital experiments have already shown that SKS delay times of about 1.5 seconds are common at stations in the region. This is about 50% larger than the global delay-time average of 1 second in continental regions. Therefore, the Dead Sea region seems exceptionally well suited for a more detailed analysis of crustal and lithospheric anisotropy using teleseismic phases. We plan to operate 26 broad-band stations for a period of one year (April 2002 until March 2003). The stations will be placed along a 60km-wide profile across the Dead Sea transform. The average station spacing of about 3 km will allow us to resolve short-scale variations of crustal anisotropy as well as anisotropy of the upper mantle beneath the fault zone. We intend to employ splitting analysis of SKS and converted phases over a wide range of frequencies to constrain the depths of anisotropic layers beneath the stations.

Related People

Person Institute
Georg Ruempker (PI) GFZ Potsdam

Used Equipment

Device Amount
EDL 26
BB 20

Location

[30.5° N, 35.2° E]