Crustal and upper mantle structure in the Ryukyu Island Arc deduced from deep seismic sounding
نویسندگان
چکیده
منابع مشابه
Crustal structure and upper mantle stratigraphy of the Arabian shield
[1] Analysis of receiver functions from an eight-station network on the Saudi Arabian shield indicates that the Moho depths vary between 35–38 km. The crust appears to be rather felsic in nature as evidenced by Poisson’s ratios of 0.25–0.27. A prominent negative phase following the Moho conversion is suggestive of a zone of velocity inversion. Indication of mantle stratification is observed ben...
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Chloride-rich brines are increasingly recognized as playing an important role in high pressure and temperature metamorphic and magmatic systems. The origins of these saline multicomponent fluids are debated, but experimental evidence suggests that regardless of their origin they must be important agents of rock alteration and mass transfer wherever they occur. Studies of the solubility of quart...
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We present a preliminary model of the three-dimensional seismic structure of the Iran region obtained via simultaneous, joint inversion of body wave travel time and gravity observations. The body wave data set is derived from location calibration efforts and includes a large (>1000 events) subset of GT5-level events. The arrival time data sets for these events include many readings of direct cr...
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[1] We determine the crustal and upper mantle structure of southern South America by inverting regional seismograms recorded by the Seismic Experiment in Patagonia and Antarctica. We present a waveform inversion method that utilizes a niching genetic algorithm. The niching genetic algorithm differs from the traditional genetic algorithm in that the inversion is performed in multiple subpopulati...
متن کاملInferring the thermochemical structure of the upper mantle from seismic data
Fabio Cammarano,1 Barbara Romanowicz,2 Lars Stixrude,3 Carolina Lithgow-Bertelloni3 and Wenbo Xu4 1Geophysical Fluid Dynamics, ETH Zürich, Sonneggstrasse 5, 8091, Switzerland. E-mail: [email protected] 2Berkeley Seismological Laboratory, University of California, 215 McCone Hall, Berkeley, CA 94720, USA 3Department of Earth Sciences, University College London, Gower Street, WC1E 6BT,...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 1990
ISSN: 0956-540X,1365-246X
DOI: 10.1111/j.1365-246x.1990.tb04587.x