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BOSO TRIPLE JUNCTION (also known as OFF-BOSO TRIPLE JUNCTION) is a triple junction off the coast of Japan; it is the only known example of a trench -trench-trench triple junction on the Earth. It is the meeting point of the North American Plate (represented by the Okhotsk subplate ) to the north, the Pacific Plate
Pacific Plate
to the east and the Philippine Sea Plate to the south.

CONTENTS

* 1 Name origin * 2 Formation * 3 Risks * 4 References

NAME ORIGIN

The Boso Triple Junction
Boso Triple Junction
is named after the Boso peninsula
Boso peninsula
.

FORMATION

It is formed from the junction of the Izu-Bonin-Mariana Arc
Izu-Bonin-Mariana Arc
where the Izu-Bonin Trench meets with the Japan Trench and the Sagami Trench .

RISKS

Located some 300 kilometres (190 mi) from the Boso triple junction, Tokyo
Tokyo
is subject to quakes and tsunamis generated from slips along this junction. Furthermore, there is a large populated region along the coast of the main island that would also be subject to damage. This junction probably has the highest associated insurance risk in the world, due to its proximity to extensive urban development.

The 2011 Tōhoku earthquake and tsunami were generated along the Japan trench well to the north of the junction and did not involve the other two trenches, although quakes that may have been aftershocks have been observed there.

REFERENCES

* ^ Renard, V.; et al. (1987). "Trench triple junction off Central Japan—preliminary results of French-Japanese 1984 Kaiko cruise, Leg 2" (PDF). Earth and Planetary Science Letters. 83: 243–256. CS1 maint: Explicit use of et al. (link )

* v * t * e

Triple junctions

TRIPLE TRENCH

* Boso Triple Junction * Banda Sea Triple Junction

TRIPLE RIDGE

* Afar Triple Junction
Afar Triple Junction
* Azores Triple Junction * Galapagos Triple Junction * Bouvet Triple Junction
Bouvet Triple Junction
* Rivera Triple Junction * Rodrigues Triple Junction
Rodrigues Triple Junction
* Tongareva triple junction

TRIPLE FAULT

* Karlıova Triple Junction

TRENCH TRENCH RIDGE

* Chile Triple Junction

FAULT FAULT TRENCH

* Kamchatka-Aleutian Triple Junction * Mendocino Triple Junction

RIDGE FAULT FAULT

* Macquarie Triple Junction
Macquarie Triple Junction

RIDGE TRENCH FAULT

* Queen Charlotte Triple Junction

SEE ALSO

* Mount Fuji

* v * t * e

Tectonic plates of East Asia ( Eurasian Plate -Pacific Plate Convergence Zone)

LARGE

* Amur Plate * Okhotsk Plate * Philippine Sea Plate * Yangtze Plate

SMALL

* Mariana Plate
Mariana Plate
* Okinawa Plate * Philippine Mobile Belt

FAULTS AND RIFT ZONES

* Baikal Rift Zone
Baikal Rift Zone
* Fukozu Fault * Idosawa Fault * Itoigawa-Shizuoka Tectonic Line
Itoigawa-Shizuoka Tectonic Line
* Izu-Bonin-Mariana Arc
Izu-Bonin-Mariana Arc
* Japan Median Tectonic Line
Japan Median Tectonic Line
* Longmenshan Fault * Neodani Fault * Nojima Fault * Northeastern Japan Arc
Northeastern Japan Arc
* Philippine Fault System
Philippine Fault System
* Senya Fault * Tanna Fault * Ulakhan Fault *