منابع مشابه
Causes for Cheating: Unclear Expectations in the Classroom
A survey was submitted to faculty, teaching assistants, and students as part of a larger study on undergraduate cheating in an introduction to computing course at Georgia Tech. This course was chosen because it is taught by a variety of professors and relies heavily on teaching assistants. The goal of this survey was to emulate earlier work done at M.I.T. and determine whether these groups held...
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[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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We propose a mechanism previously developed as a hypothetical cause of the initiation of subduction in the Earth's mantle, to describe a situation where such subduction may occur transiently, at irregular intervals of time. It has been suggested that tectonics on Venus may be described by such a scenario. In our model, a subduction event is followed by resumption of high Rayleigh number mantle ...
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ژورنال
عنوان ژورنال: Nature Geoscience
سال: 2016
ISSN: 1752-0894,1752-0908
DOI: 10.1038/ngeo2703