The great Tohoku-oki earthquake [moment magnitude (Mw 9.0)] on 11 March 2011 occurred in a megathrust zone formed by the active subduction of the Pacific plate beneath the Okhotsk plate along the Japan Trench (Fig. 1).
Tectonic setting of the M w 9.0 Tohoku … – ResearchGate
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What type of tectonic plate boundary caused the Japan earthquake and tsunami of 2011?
On 11 March 2011 at 05:46:23 UTC, a mega earthquake (EQ) with magnitude (Mw) 9.0 [The 2011 Tohoku Earthquake] occurred at a depth of about 24 km near the East coast of Honshu Island, Japan as a result of a thrust faulting on or near the subduction plate boundary between the Pacific and North American plates.
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What is Japan’s tectonic setting?
The Japanese Islands are located at the boundaries of four tectonic plates: the Pacific, Philippine Sea, North America (or Okhotsk) and Eurasia (or Amur) (figure 1a). The Pacific plate subducts beneath the North America plate along the Kuril and Japan Trenches at a rate of approximately 8 cm yr−1 [1].
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Which tectonic plates were involved in the Japan earthquake?
The two tectonic plates involved are the Pacific plate, on which the Pacific Ocean resides, and a portion of the North American plate, on which parts of Japan sit. A thick layer of clay sits atop the Pacific plate, which is getting dragged under a portion of the North American plate.
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What type of fault was the Japan earthquake 2011?
The 2011 event resulted from thrust faulting on the subduction zone plate boundary between the Pacific and North America plates, according to the U.S. Geological Survey . This region has a high rate of seismic activity, with the potential to generate tsunamis.
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What tectonic plates were involved in the 2011 Japan earthquake?
The two tectonic plates involved are the Pacific plate, on which the Pacific Ocean resides, and a portion of the North American plate, on which parts of Japan sit. A thick layer of clay sits atop the Pacific plate, which is getting dragged under a portion of the North American plate.
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What type of plate boundary caused the Japan earthquake?
On 11 March 2011 at 05:46:23 UTC, a mega earthquake (EQ) with magnitude (Mw) 9.0 [The 2011 Tohoku Earthquake] occurred at a depth of about 24 km near the East coast of Honshu Island, Japan as a result of a thrust faulting on or near the subduction plate boundary between the Pacific and North American plates.
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What plates were involved in the Fukushima earthquake?
It was centered on the seafloor 72 km east of Tohoku, at a depth of 24 km below the surface. The main quake was followed by over 5000 aftershocks, the largest reaching magnitude 7.9. Honshu, Japan’s main island, lies at the intersection between three tectonic plates: the Eurasian, Philippine and North American.
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What 4 tectonic plates are under Japan?
The Japanese Islands are located at the boundaries of four tectonic plates: the Pacific, Philippine Sea, North America (or Okhotsk) and Eurasia (or Amur) (figure 1a).
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What type of plate boundary caused the 2011 Japan tsunami?
On 11 March 2011 at 05:46:23 UTC, a mega earthquake (EQ) with magnitude (Mw) 9.0 [The 2011 Tohoku Earthquake] occurred at a depth of about 24 km near the East coast of Honshu Island, Japan as a result of a thrust faulting on or near the subduction plate boundary between the Pacific and North American plates.
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What type of plate boundary causes earthquakes in Japan?
Japan has been situated in the convergent plate boundary during long geohistorical ages. This means that the Japanese islands are built under the subduction tectonics. The oceanic plate consists of the oceanic crust and a part of the mantle beneath it.
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Was the 2011 Japan earthquake convergent or divergent?
The Tohoku Earthquake, and the accompanying tsunami, was the result of a major thrust faulting along or near the convergent plate boundary where the Pacific Plate dips to the west beneath Japan (Fig.
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What caused the 2011 Japan earthquake and tsunami?
The 2011 event resulted from thrust faulting on the subduction zone plate boundary between the Pacific and North America plates, according to the U.S. Geological Survey . This region has a high rate of seismic activity, with the potential to generate tsunamis.
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What type of fault line is Japan on?
The two best known faults in Japan are the Itoigawa-Shizuoka Tectonic Line (ISTL) which cuts across Honshu north to south just west of Tokyo and the Median Tectonic Line (MTL) which is an east-west trending strike-slip fault that parallels the Nankai Trough from the Kii Peninsula into the heart of Kyushu.
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Was the Tohoku earthquake a reverse fault?
It was a large ocean-type reverse fault earthquake occurring at a plate boundary with a west-northwest to east-southeast compression axis. The epicentral location of the main earthquake, and that of the larger aftershocks (moment magnitude of M 6), are shown in Fig. 1.
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Was the 2011 Japan earthquake a destructive plate boundary?
On 11 March 2011 at 05:46:23 UTC, a mega earthquake (EQ) with magnitude (Mw) 9.0 [The 2011 Tohoku Earthquake] occurred at a depth of about 24 km near the East coast of Honshu Island, Japan as a result of a thrust faulting on or near the subduction plate boundary between the Pacific and North American plates.
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What caused the most destruction from the 2011 Japan earthquake and why?
March 11, 2011: A magnitude 9.0 earthquake struck off Japan’s northeastern coast, near the Tōhoku region. Tsunami waves smashed the coast, causing massive damage and flooding. The Fukushima Daiichi Nuclear Power Plant cooling system was damaged, raising fears of a meltdown.
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What are the tectonic features of Japan?
Earthquakes, volcanoes, and trenches all result from Japan being wedged among four major tectonic plates. The Pacific Plate subducts beneath the Okhotsk Plate at the Japan Trench. The Philippine Sea Plate subducts beneath central and southwest Japan at the Sagami Trough, the Nankai Trough, and the Ryukyu Trench.
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What is the tectonic setting of Japan quizlet?
Where is Japan? Japan is located at the meeting point of 3 tectonic plates: Eurasian, Pacific and Philippines. It is a destructive plate margin surrounded by faults. This means it is extremely prone to earthquakes.
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What tectonic setting is Tokyo?
Tokyo is uniquely located where three tectonic plates converge, a setting known as a “triple-junction.” Both the Philippine Sea and Pacific plates are shoved, or subducted, beneath Tokyo, causing megathrust earthquakes on multiple plate interfaces, as well as shallow crustal quakes, and deep earthquakes within the …
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What is a tectonic setting?
Tectonic setting refers to the different tectonic conditions present at a particular location on Earth. It describes whether somewhere is near a tectonic plate boundary or in a more interior position on the plate.
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