Rayleigh wave ellipticity measurements in the Iberian Peninsula and Morocco
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Estadístiques de LA Referencia / Recolecta
Inclou dades d'ús des de 2022
Cita com:
hdl:2099/16568
Tipus de documentText en actes de congrés
Data publicació2015-05-05
EditorBarcelona Supercomputing Center
Condicions d'accésAccés obert
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continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
We combine Rayleigh wave ellipticity, or H/V (horizontal
to vertical) amplitude ratios, measurements obtained using
teleseismic earthquake recordings and ambient noise cross
correlations to provide improved constraints on the crustal models
across the Iberian Peninsula and Morocco. To obtain the H/V ratios,
we use more than 250 shallow (h<40 km) teleseismic events with
magnitudes Mw>6.0 recorded at more than 450 seismic stations. We
also use all the multicomponent ambient noise cross correlations
computed for each station pair for the time period 2010 to 2012.
Periods between 20 and 100 seconds are investigated. We observe a
good agreement between the uppermost geological features of the
crust and the obtained Rayleigh H/V ratios, with low values in major
mountain ranges and high ratios in sedimentary basins. Combination
of Rayleigh H/V ratio measurements from both earthquakes and
ambient noise data with phase velocities and other types of seismic
data will help to better constrain the Earth’s structure at different
crustal levels.
CitacióGómez-García, Clara; Villaseñor, Antonio. Rayleigh wave ellipticity measurements in the Iberian Peninsula and Morocco. A: "BSC Doctoral Symposium (2nd: 2015: Barcelona)". 2nd ed. Barcelona: Barcelona Supercomputing Center, 2015, p. 108-109.
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