Gravity anomalies, crustal structure, and seismicity at subduction zones: 2. Interrelationships between fore-arc structure and seismogenic behavior
نویسندگان
چکیده
منابع مشابه
Large trench-parallel gravity variations predict seismogenic behavior in subduction zones.
We demonstrate that great earthquakes occur predominantly in regions with a strongly negative trench-parallel gravity anomaly (TPGA), whereas regions with strongly positive TPGA are relatively aseismic. These observations suggest that, over time scales up to at least 1 million years, spatial variations of seismogenic behavior within a given subduction zone are stationary and linked to the geolo...
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The cause of intermediate-depth (> 40 km) seismicity in subduction zones is not well understood. The viability of proposed mechanisms, which include dehydration embrittlement, shear instabilities and the presence of fluids in general, depends significantly on local conditions, including pressure, temperature and composition. The wellinstrumented and well-studied subduction zone below Northern J...
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s of the 12th Annual Goldschmidt Conference, V. M., Geochim. Cosmochim. Acta, 66(15A), 580. Phinney, E. J., et al. (1999), Sequence stratigraphy, structure, and tectonic history of the southwestern Ontong Java Plateau adjacent to the North Solomon Trench and Solomon islands arc, J. Geophys. Res., 104(B9), 20,449 – 20,466, doi:10.1029/1999JB900169. Phinney, E. J., et al. (2004), Sequence stratig...
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ژورنال
عنوان ژورنال: Geochemistry, Geophysics, Geosystems
سال: 2015
ISSN: 1525-2027
DOI: 10.1002/2014gc005685