English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/177601
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Constraining S -wave velocity using Rayleigh wave ellipticity from polarization analysis of seismic noise

AuthorsBerbellini, Andrea; Schimmel, Martin ; Ferreira, A. M. G.; Morelli, A.
KeywordsCrustal imaging
Seismic noise
Seismic tomography
Site effects
Surface waves and free oscillations
Seismology
Issue DateFeb-2019
PublisherOxford University Press
CitationGeophysical Journal International, 216(3): 1817-1830 (2019)
AbstractWe develop a new method for measuring ellipticity of Rayleigh waves from ambient noise records by degree-of-polarization (DOP) analysis. The new method, named DOP-E, shows a good capability to retrieve accurate ellipticity curves separated from incoherent noise. In order to validate the method we perform synthetic tests simulating noise in a 1-D earth model. We also perform measurements on real data from Antarctica and Northern Italy. Observed curves show a good fit with measurements from earthquake records and with theoretical ellipticity curves. The inversion of real data measurements for v S structure shows a good agreement with previous models. In particular, the shear-wave structure beneath Concordia station shows no evidence of a significant layer of liquid water at the base of the ice. The new method can be used to measure ellipticity at high frequency and therefore it will allow the imaging of near-surface structure, and possibly of temporal changes in subsurface properties. It promises to be useful to study near-surface processes in a wide range of geological settings, such as volcanoes, fault zones and glaciers. © The Author(s) 2018. Published by Oxford University Press on behalf of The Royal Astronomical Society.
URIhttp://hdl.handle.net/10261/177601
DOI10.1093/gji/ggy512
ISSN0956-540X
E-ISSN1365-246X
Appears in Collections:(ICTJA) Artículos
Files in This Item:
File Description SizeFormat 
Schimmel_Geophys_ J_Int_216_1817.pdf3,63 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.