Rheology and stress in subduction zones around the aseismic/seismic transition
نویسندگان
چکیده
منابع مشابه
Fluid flow in subduction zones: The role of solid rheology and compaction pressure
a Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, USA b Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027, USA c Department of Earth and Environmental Sciences, 1100 North University Avenue, 2534 CC Little Building, University of Michigan, Ann Arbor, MI 48109-1005, USA d Earth Science, University of California, Santa Barba...
متن کاملSubduction Zones
[1] Subduction zones are where sediments, oceanic crust, and mantle lithosphere return to and reequilibrate with Earth’s mantle. Subduction zones are interior expressions of Earth’s 55,000 km of convergent plate margins and are the geodynamic system that builds island arcs. Excess density of the mantle lithosphere in subduction zones provides most of the power needed to move the plates while in...
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Rheological flow laws can be obtained from studies using multi-anvil high-pressure systems with synchrotron-based piezometers and strain metrics. The high flux X-ray source provides minute-scale time resolution with accurate measurement of diffraction patterns and direct sample images. Measurements of length changes with an accuracy of one part in 104 are being developed and will provide a new ...
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Stress drop is a fundamental parameter of earthquakes, but it is difficult to obtain reliable stress drop estimates for most earthquakes. Static stress drop estimates require knowledge of the seismic moment and fault area. Dynamic stress drop estimates are based entirely upon the observed source time functions. Based on analytical formulas that I derive for the crack and slip-pulse rupture mode...
متن کاملSimple Kinematics of Subduction Zones
Two main types of subduction zones can be distinguished: (1) those where the subduction hinge migrates away from the upper plate; and (2) those in which the subduction hinge migrates toward the upper plate. Apart from a few exceptions, this distinction seems to apply particularly for W-directed subduction zones and Eor NE-directed subduction zones, respectively. Moreover, the rate of subduction...
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ژورنال
عنوان ژورنال: Progress in Earth and Planetary Science
سال: 2018
ISSN: 2197-4284
DOI: 10.1186/s40645-018-0183-8