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  1. Seismic moment is measured in Newton-meters (Nm or N·m) in the SI system of measurement, or dyne-centimeters (dyn-cm; 1 dyn-cm = 10 −7 Nm) in the older CGS system. In the simplest case the moment can be calculated knowing only the amount of slip, the area of the surface ruptured or slipped, and a factor for the resistance or friction encountered.

  2. A convoy of fire engines in the tsunami zone. The aftermath of the 2011 Tōhoku earthquake and tsunami included both a humanitarian crisis and massive economic impacts. The tsunami created over 300,000 refugees in the Tōhoku region of Japan, and resulted in shortages of food, water, shelter, medicine and fuel for survivors. 15,900 deaths have ...

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  4. Between 1901 and the year 2000 there were 91 major earthquakes in Taiwan, 48 of them resulting in loss of life. [4] The most recent major earthquake was the 2024 Hualien earthquake, and the most recent major earthquake with a high death toll was the 921 earthquake, which struck on 21 September 1999, and claimed 2,415 lives.

  5. v. t. e. The Richter scale [1] ( / ˈrɪktər / ), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [2] is a measure of the strength of earthquakes, developed by Charles Francis Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it ...

  6. en.wikipedia.org › wiki › JapanJapan - Wikipedia

    Japan is an island country in East Asia.It is in the northwest Pacific Ocean and is bordered on the west by the Sea of Japan, extending from the Sea of Okhotsk in the north toward the East China Sea, Philippine Sea, and Taiwan in the south. Japan is a part of the Ring of Fire, and spans an archipelago of 14,125 islands, with the four main islands being Hokkaido, Honshu (the "mainland ...

  7. en.wikipedia.org › wiki › Unit_731Unit 731 - Wikipedia

    Unit 731 ( Japanese: 731部隊, Hepburn: Nana-san-ichi Butai), [note 1] short for Manchu Detachment 731 and also known as the Kamo Detachment [3] : 198 and the Ishii Unit, [5] was a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that engaged in lethal human experimentation and biological ...

  8. Unit 2, which suffered a partial core melt, is in the background. A nuclear meltdown ( core meltdown, core melt accident, meltdown or partial core melt [2]) is a severe nuclear reactor accident that results in core damage from overheating. The term nuclear meltdown is not officially defined by the International Atomic Energy Agency [3] or by ...