Resolving the lithosphere-asthenosphere boundary with seismic Rayleigh waves
نویسندگان
چکیده
منابع مشابه
Anomalous seaward dip of the lithosphere–asthenosphere boundary beneath northeastern USA detected using differential-array measurements of Rayleigh waves
S U M M A R Y Rayleigh wave phase velocities and azimuth anomalies in the period range of 30–100 s are measured for a set of four triangular arrays of broad-band seismometers in coastal northeastern USA. This is a region in which a strong upper mantle slow shear velocity anomaly (a ‘New England Anomaly’), crosses the continental margin. Earthquakes from a wide range of directions are used to de...
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The lithosphere-asthenosphere boundary divides the rigid lid from the weaker mantle and is fundamental in plate tectonics. However, its depth and defining mechanism are not well known. We analyzed 15 years of global seismic data using P-to-S (Ps) converted phases and imaged an interface that correlates with tectonic environment, varying from 95 +/- 4 kilometers beneath Precambrian shields and p...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 2011
ISSN: 0956-540X
DOI: 10.1111/j.1365-246x.2011.05096.x