Boso Triple Junction

boso triple junction
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 to the east and the Philippine Sea Plate to the south1

Contents

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

Name originedit

The Boso Triple Junction is named after the Boso peninsula

Formationedit

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

Risksedit

Located some 300 kilometres 190 mi from the Boso triple junction, 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 developmentcitation needed

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 thereclarification needed

Referencesedit

1. ^ 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 e Triple junctions
Triple Trench	Boso Triple Junction Banda Sea Triple Junction
Triple Ridge	Afar Triple Junction Azores Triple Junction Galapagos Triple Junction Bouvet Triple Junction Rivera 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
Ridge Trench Fault	Queen Charlotte Triple Junction
See also	Mount Fuji

v 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 Okinawa Plate Philippine Mobile Belt
Faults and rift zones	Baikal Rift Zone Fukozu Fault Idosawa Fault Itoigawa-Shizuoka Tectonic Line Izu-Bonin-Mariana Arc Japan Median Tectonic Line Longmenshan Fault Neodani Fault Nojima Fault Northeastern Japan Arc Philippine Fault System Senya Fault Tanna Fault Ulakhan Fault Urasoko fault
Trenches and troughs	Kuril Trench Mariana Trench Japan Izu-Ogasawara Trench Japan Trench Nankai Trough Sagami Trough Suruga Trough Okinawa Trough Ryukyu Trench Philippines Manila Trench Philippine Trench East Luzon Trench
Other	Boso Triple Junction

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