Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/95458/1/grl4356.pd

Lay, Thorne

Young, Christopher J.

Geophysical Research Letters

English

Abstract. Transverse component bodywave ground dis-placements from deep focus earthquakes exhibit complexi-ties which are not accounted for by standard radially sym-metric Earth models. This anomalous behavior is exam-ined using 123 broadband teleseismic SH displacement recordings, reconstituted from short- and long-period or broadband seismograms for 11 events in the Kurile subduc-tion zone. The greatest complexity, involving an extra arrival between the S and ScS phases at epicentral dis-tances greater than 72 ø, has a strong distance dependence and little azimuthal variation with respect to the source region, favoring an interpretation as a deep mantle triplica-tion rather than a near-source slab diffraction

Thorne Lay

Christopher J. Young

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Waveform complexity in teleseismic broadband SH displacements: slab diffractions or deep mantle reflections

Deep Blue Documents at the University of Michigan

Waveform complexity in teleseismic broadband SH displacements: Slab diffractions or deep mantle reflections?

http://es.ucsc.edu/%7Ethorne/TL.pdfs/LY_Slabs_GRL1989.pdf

Waveform complexity in teleseismic broadband SH displacements: Slab diffractions or deep mantle reflections?

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Deep Blue Documents at the University of Michigan