Results 11 to 20 of about 3,062 (210)

SplitLab: A shear-wave splitting environment in Matlab [PDF]

Computers & Geosciences, 2008
We present a graphical user interface to facilitate the processing of teleseismic shear-wave splitting observations. In contrast to a fully automated technique, we present a manual, per-event approach that maintains user control during the sequence of processing.
Andreas Wüstefeld, Götz Bokelmann, Christophe Zaroli, Guilhem Barruol   +3 more
openaire   +6 more sources

Teleseismic shear wave splitting measurements in noisyenvironments [PDF]

Geophysical Journal International, 1999
SUMMARY High noise levels hamper teleseismic shear wave splitting measurements, which bandpass filtering does not always help. To investigate how robust splitting measurements are to noise, we analysed a set of synthetic records with known splitting parameters and added fixed levels of noise.
Restivo, A, Helffrich, GR
openaire   +5 more sources

Full‐wave effects on shear wave splitting [PDF]

Geophysical Research Letters, 2014
AbstractSeismic anisotropy in the mantle plays an important role in our understanding of the Earth's internal dynamics, and shear wave splitting has always been a key observable in the investigation of seismic anisotropy. To date the interpretation of shear wave splitting in terms of anisotropy has been largely based on ray‐theoretical modeling of a ...
Yu‐Pin Lin, Li Zhao, Shu‐Huei Hung
openaire   +3 more sources

Shear-Wave Splitting in the Alpine Region [PDF]

Geophysical Journal International, 2021
<p>To constrain seismic anisotropy under and around the Alps in Europe, we study SKS shear-wave splitting from the region densely covered by the AlpArray seismic network. We apply a technique based on measuring the splitting intensity, constraining well both the fast orientation and the splitting delay.
Gerrit Hein, Petr Kolínský, Irene Bianchi, Götz Bokelmann, György Hetényi, Rafael Abreu, Ivo Allegretti, Maria-Theresia Apoloner, Coralie Aubert, Simon Besançon, Maxime Bés de Berc, Götz Bokelmann, Didier Brunel, Marco Capello, Martina Čarman, Adriano Cavaliere, Jérôme Chéze, Claudio Chiarabba, John Clinton, Glenn Cougoulat, Wayne C. Crawford, Luigia Cristiano, Tibor Czifra, Ezio D’Alema, Stefania Danesi, Romuald Daniel, Anke Dannowski, Iva Dasović, Anne Deschamps, Jean-Xavier Dessa, Cécile Doubre, Sven Egdorf, Tomislav Fiket, Kasper Fischer, Wolfgang Friederich, Florian Fuchs, Sigward Funke, Domenico Giardini, Aladino Govoni, Zoltán Gráczer, Gidera Gröschl, Stefan Heimers, Ben Heit, Davorka Herak, Marijan Herak, Johann Huber, Dejan Jarić, Petr Jedlička, Yan Jia, Hélène Jund, Edi Kissling, Stefan Klingen, Bernhard Klotz, Petr Kolínský, Heidrun Kopp, Michael Korn, Josef Kotek, Lothar Kühne, Krešo Kuk, Dietrich Lange, Jürgen Loos, Sara Lovati, Deny Malengros, Lucia Margheriti, Christophe Maron, Xavier Martin, Marco Massa, Francesco Mazzarini, Thomas Meier, Laurent Métral, Irene Molinari, Milena Moretti, Anna Nardi, Jurij Pahor, Anne Paul, Catherine Péquegnat, Daniel Petersen, Damiano Pesaresi, Davide Piccinini, Claudia Piromallo, Thomas Plenefisch, Jaroslava Plomerová, Silvia Pondrelli, Snježan Prevolnik, Roman Racine, Marc Régnier, Miriam Reiss, Joachim Ritter, Georg Rümpker, Simone Salimbeni, Marco Santulin, Werner Scherer, Sven Schippkus, Detlef Schulte-Kortnack, Vesna Šipka, Stefano Solarino, Daniele Spallarossa, Kathrin Spieker, Josip Stipčević, Angelo Strollo, Bálint Süle, Gyöngyvér Szanyi, Eszter Szűcs, Christine Thomas, Martin Thorwart, Frederik Tilmann, Stefan Ueding, Massimiliano Vallocchia, Luděk Vecsey, René Voigt, Joachim Wassermann, Zoltán Wéber, Christian Weidle, Viktor Wesztergom, Gauthier Weyland, Stefan Wiemer, Felix Wolf, David Wolyniec, Thomas Zieke, Mladen Živčić, Helena Žlebčíková   +120 more
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Sensitivity of shear wave splitting to fracture connectivity [PDF]

Geophysical Journal International, 2023
SUMMARY Shear wave splitting (SWS) is currently considered to be the most robust seismic attribute to characterize fractures in geological formations. Despite its importance, the influence of fluid pressure communication between connected fractures on SWS remains largely unexplored.
He, Yanbin, Rubino, J. Germán, Barbosa, Nicolás D., Solazzi, Santiago G., Favino, Marco, Chen, Tianning, Gao, Jinghuai, Holliger, Klaus   +7 more
openaire   +3 more sources

Shear wave splitting and shear wave splitting tomography of the southern Puna plateau [PDF]

Geophysical Journal International, 2014
Fil: Calixto, Frank J.. University of Missouri-Columbia.
Calixto, F., Robinson, D., Sandvol, E., Kay, S., Abt, D., Fischer, K., Heit, B., Yuan, X., Comte, D., Alvarado, P.   +9 more
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Shear‐wave splitting beneath the Galápagos archipelago [PDF]

Geophysical Research Letters, 2005
Shear‐wave splitting measurements in the Galápagos archipelago show a rapid change from consistently oriented anisotropy to no measurable anisotropy. At the western edge of the archipelago delay times are 0.4–0.9 s and fast polarization directions are 81–109°E. These directions are consistent with anisotropy resulting from shear of the asthenosphere by
Fontaine, Fabrice R., Hooft, Emilie, Burkett, Peter, Toomey, Douglas, Solomon, Sean C., Silver, Paul   +5 more
openaire   +3 more sources

Shear-wave splitting and earthquake forecasting [PDF]

Terra Nova, 2008
AbstractSeismic shear‐wave splitting (SWS) monitors the low‐level deformation of fluid‐saturated microcracked rock. We report evidence of systematic SWS changes, recorded above small earthquakes, monitoring the accumulation of stress before earthquakes that allows the time and magnitude of impending large earthquakes to be stress‐forecast.
Gao, Yuan, Crampin, Stuart, Institute of Earthquake Science. China Earthquake Administration, University of Edinburgh. Grant Institute, British Geological Survey   +4 more
openaire   +3 more sources

Shear-wave splitting in the mantle of the pacific [PDF]

Geophysical Journal International, 1994
SUMMARY The bulk of previously known data on seismic anisotropy in the suboceanic mantle was obtained from observations of azimuthal variations of the surface-wave and P, velocities. Our study of azimuthal anisotropy in the mantle of the Pacific is based on observations of shear-wave splitting. The idea of our method of measurement (Vinnik & Farra 1992)
Véronique Farra, Lev Vinnik
openaire   +1 more source

Shear‐wave splitting observations across southwest Ireland [PDF]

Geophysical Research Letters, 2006
Shear‐wave splitting analyses have been carried out on teleseismic data from the southwest of Ireland acquired during the Irish Seismological Lithospheric Experiment (ISLE). The data were gathered over a ten‐month period by a temporary network of 23 broadband and short‐period stations.
Do, V., Readman, P., O'Reilly, B., Landes, M.   +3 more
openaire   +3 more sources