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Authors: Pondrelli, S.*
Margheriti, L.*
Danesi, S.*
Editors: Futterer, DK
Damaske, D
Kleinschmidt, G
Miller, H
Tessensohn, F
Title: Seismic Anisotropy beneath Northern Victoria Land from SKS Splitting Analysis
Issue Date: 13-Dec-2005
Keywords: Seismic anisotropy
Abstract: Abstract. Teleseismic data recorded by temporary and permanent stations located in the Northern Victoria Land region are analysed in order to identify the presence and location of seismic anisotropy. We work on data recorded by 24 temporary seismographic stations deployed between 1993 and 2000 in different zones of the Northern Victoria Land, and by the permanent very broad-band stations TNV located near the Italian Base M. Zucchelli. The temporary networks monitored an area extending from Terra Nova Bay towards the South beyond the David Glacier and up to the Indian Ocean northward. To better constrain our study, we also provide an analysis of data recorded by TNV in the same period of time and we take into account also SKS shear wave splitting measurements performed by Barruol and Hoffman (1999) on data recorded by DRV. This study, to be considered as preliminary, reveals the presence of seismic anisotropy below the study region, with a mainly NW-SE fast velocity direction below the Terra Nova Bay area and rather large delay times, that mean a deep rooted anisotropic layer.
Appears in Collections:Book chapters
04.01.99. General or miscellaneous
Papers Published / Papers in press

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