Suruga Trough

Location of Suruga Trough (yellow line)

Suruga Trough(Trough) means to be located within the northernmost part of the boundary between the eastern end and the northernmost point (red line on the right). There is on the northeast side across the Izu peninsula.

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Earthquake in Suruga Trough

In this area, since (the first year) (including the epicenter area), has not occurred. The Philippine Sea plate is constantly submerged under the Eurasia Plate, and in the Suruga Trough It is thought that****will occur. However, evidence that a massive earthquake (Tokai earthquake) with only the Suruga trough section as the epicenter occurred in the past has not been confirmed so far.

Earthquake Observation

Facilities that continuously observe earthquakes and crustal deformation such as water pressure gauge, cable type ocean bottom seismograph, inclinometer etc. are arranged intensively on the seabed of the assumed focal region of the Tokai earthquake after "19" in 1978 Has been constructed.

• 1979, Tokai Offshore Cable Type Always Ocean Bottom Earthquake Observation System (total length about 150 km, seismograph: 4 places)
• Cable type constant ocean bottom seismic observation system (total length about 220 km, seismograph: 5, tsunami measuring equipment 3) off the Tokai / Tonankai area in the western sea area of ​​the Tokai-oki cable constant-type ocean bottom seismic observation network in 2008

footnote

1. ^ 2. *The name "Tokai earthquake" in the history refers not only to Suruga Trough but also to the huge earthquake including the focal region of the Tonankai earthquake as mentioned above. 3. 4. *Earthquake Prediction Liaison Committee Report 86 Vol. 12-3 () 5. July 3, 2008 NEC Corporation 6. ****Japan Meteorological Agency ()

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Post Date : 2018-01-29 03:00

This article is taken from the Japanese Wikipedia Suruga Trough

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