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The Okinawa plate is bounded on the western side by the Okinawa Trough, a back arc basin and divergent boundary with the Yangtze plate. A section of the southern boundary between the Okinawa plate and the Philippine Sea plate is a former subduction zone that now accommodates oblique slip and was the location of the 1771 Great Yaeyama Tsunami.
Hawaii – Southern: 7.9: X: 31–77: Limited damage / homes destroyed / tsunami: Note: The inclusion criteria for adding events are based on WikiProject Earthquakes' notability guideline that was developed for stand-alone articles. The principles described also apply to lists.
Tectonic plates generally focus deformation and volcanism at plate boundaries.However, the Hawaii hotspot is more than 3,200 kilometers (1,988 mi) from the nearest plate boundary; [1] while studying it in 1963, Canadian geophysicist J. Tuzo Wilson proposed the hotspot theory to explain these zones of volcanism so far from regular conditions, [3] a theory that has since come into wide acceptance.
COURTESY USGS This U.S. Geological Survey map shows the location of a magnitude 7.0 earthquake off Russia’s Kamchatka region today. It poses no tsunami risk to Hawaii. COURTESY USGS This U.S ...
In the Himalayan region, where the Indian plate subducts under the Eurasian plate, the largest recorded earthquake was the 1950 Assam–Tibet earthquake, at magnitude 8.7. It is estimated that earthquakes with magnitude 9.0 or larger are expected to occur at an interval of every 800 years, with the highest boundary being a magnitude 10, though ...
The boundary between Okhotsk microplate and Pacific plate is a subduction zone, where the Pacific plate subducts beneath the Okhotsk Plate. Many strong megathrust earthquakes occurred here, some of them among the largest on world record, including the Kamchatka earthquakes of 1737 (estimated M9.0~9.3) and 1952 (M9.0).
The basis for defining this tectonic boundary is the occurrence of large magnitude 7 or greater earthquakes along a linear zone from offshore Niigata Prefecture to off the west coast of Hokkaido. [7] Following the 1983 Nihonkai-Chubu earthquake , the idea of a young plate boundary was proposed, but its mechanism is unknown—it has been ...
A seismogram recorded in Massachusetts, United States. The magnitude 9.1 (M w) undersea megathrust earthquake occurred on 11 March 2011 at 14:46 JST (05:46 UTC) in the north-western Pacific Ocean at a relatively shallow depth of 32 km (20 mi), [9] [56] with its epicenter approximately 72 km (45 mi) east of the Oshika Peninsula of Tōhoku, Japan, lasting approximately six minutes.