Nankai Trough
E77321
The Nankai Trough is a major submarine trench off the coast of southwestern Japan, known as a highly active subduction zone capable of generating powerful megathrust earthquakes and tsunamis.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Nankai Trough region | 1 |
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
oceanic trench
ⓘ
plate boundary ⓘ subduction zone ⓘ submarine trench ⓘ |
| approximateLength | about 700 km ⓘ |
| associatedEarthquake |
1707 Hoei earthquake
ⓘ
1854 Ansei-Nankai earthquake ⓘ 1854 Ansei-Tokai earthquake ⓘ |
| country | Japan ⓘ |
| earthquakeRecurrenceInterval | approximately 100–200 years ⓘ |
| extendsFrom | Suruga Bay ⓘ |
| extendsTo | offshore Kyushu ⓘ |
| hasObservationNetwork |
GPS observation network on land
ⓘ
cabled seafloor observatories ⓘ ocean-bottom seismometers ⓘ |
| hazardType |
coastal inundation
ⓘ
land subsidence ⓘ strong ground shaking ⓘ tsunami ⓘ |
| knownFor |
great interplate earthquakes
ⓘ
megathrust earthquakes ⓘ tsunami generation ⓘ |
| lastMajorEarthquakeSequence |
1944 Tonankai earthquake
ⓘ
1946 Nankai earthquake ⓘ |
| locatedIn | Pacific Ocean ⓘ |
| locatedOffCoastOf |
Honshu
NERFINISHED
ⓘ
Kyushu NERFINISHED ⓘ Shikoku NERFINISHED ⓘ southwestern Japan ⓘ |
| maximumDepth | over 4000 m ⓘ |
| maximumExpectedMagnitude | around magnitude 8 to 9 ⓘ |
| monitoredBy |
Japan Agency for Marine-Earth Science and Technology
ⓘ
Japan Meteorological Agency ⓘ Government of Japan ⓘ
surface form:
Japanese government
|
| overridingPlate |
Amur Plate
ⓘ
Eurasian Plate ⓘ Okhotsk Plate ⓘ |
| parallelTo | Japanese island arc ⓘ |
| partOf | Pacific Ring of Fire ⓘ |
| riskTo |
Kansai region
NERFINISHED
ⓘ
Kyushu coastal areas ⓘ Shikoku coastal areas ⓘ Tokai region NERFINISHED ⓘ |
| segment |
Hyuga-nada segment
ⓘ
Nankai segment ⓘ Tokai segment ⓘ Tonankai segment ⓘ |
| seismicHazardLevel | very high ⓘ |
| subductingPlate | Philippine Sea Plate ⓘ |
| tectonicSetting | convergent plate boundary ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Nankai Trough region