subduction zones


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Related to subduction zones: Tectonic plates

subduction zones

[səb′dək·shən ‚zōnz]
(geology)
Regions where portions of the earth's tectonic plates are diving beneath other plates, into the earth's interior. They are defined by deep oceanic trenches, lines of volcanoes parallel to the trenches, and zones of large earthquakes that extend from the trenches landward.
References in periodicals archive ?
Subduction zone earthquakes can produce large tsunamis because there are large and rapid displacements of the seafloor during the earthquakes.
There are two subduction zones in the United States.
Harmony Colella of Miami University in Ohio crunches numbers to recreate what might happen for hundreds of thousands of slow slip events in real subduction zones.
North America (Cascadia) - The last mega-earthquake on this subduction zone occurred 300 years ago.
Minor and moderate seismic events in Figures 3 and 4, respectively, are concentrated along the Pacific subduction zone and intracrustal discontinuities of the North Andes Microplate.
Therefore, subduction zones may move appreciably over timescales of 100 million years relative to some other reference frame.
The Indian Ocean earthquake occurred between the Eurasian and Indian plates along a subduction zone, an area where one plate tries to dive beneath another.
This will be particularly important for subduction zones with limited or no historic subduction earthquakes, where the hazard potential is not well known.
The new earthquake devices will be installed under the ocean on the Hikurangi Subduction Zone within the week.
These hydrated fault zones can carry large amounts of water, suggesting that subduction zones carry much more water from the ocean down to the mantle than has previously been suggested.
The discovery of this unusual clay in the Tohoku slip zone suggests that other subduction zones in the northwest Pacific where this type of clay is present - from Russia's Kamchatka peninsula to the Aleutian Islands - may be capable of generating similar, huge earthquakes, Rowe added.