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2024 Hyūga-nada Earthquake
On 8 August 2024, at 16:42:55 Japan Standard Time, JST (07:42 Coordinated Universal Time, UTC), a 7.1 earthquake struck in the Hyūga Sea off the coast of Miyazaki Prefecture, Kyushu, Japan, northeast of Nichinan, Miyazaki, Nichinan. The earthquake resulted in injuries to 16 people, and triggered extended emergency measures in Japan due to fears of a more powerful earthquake along the Nankai Trough. Tectonic setting The Hyūga Sea is located at the southwestern end of the Nankai Trough, an active subduction zone. The Nankai Trough represents the plate boundary where the Philippine Sea plate subducts beneath the Eurasian plate. The area is associated with large earthquakes in 1662 Hyūga-nada earthquake, 1662 ( 7.9), 1941 Hyūga-nada earthquake, 1941 ( 8.0), 1961 Hyūga-nada earthquake, 1961 ( 7.5), 1968 Hyūga-nada earthquake, 1968 ( 7.5) and two in 1996 Hyūga-nada earthquake, 1996 ( 6.6 and 6.7). The Hyūga Sea is interpreted as a transition zone between the highly coupled Na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan Meteorological Agency Seismic Intensity Scale
The Japan Meteorological Agency (JMA) Seismic Intensity Scale (known in Japan as the Shindo seismic scale) is a seismic intensity scale used in Japan to categorize the intensity of local ground shaking caused by earthquakes. The JMA intensity scale differs from magnitude measurements like the moment magnitude () and the earlier Richter scales, which represent how much energy an earthquake releases. Similar to the Mercalli scale, the JMA scale measures the intensities of ground shaking ''at various observation points within the affected area''. Intensities are expressed as numerical values called ; the higher the value, the more intense the shaking. Values are derived from ground acceleration and duration of the shaking, which are themselves influenced by factors such as distance to and depth of the hypocenter (focus), local soil conditions, and nature of the geology in between, as well as the event's magnitude; every quake thus entails numerous intensities. Intensity data ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1961 Hyūga-nada Earthquake
Events January * January 1 – Monetary reform in the Soviet Union, 1961, Monetary reform in the Soviet Union. * January 3 ** United States President Dwight D. Eisenhower announces that the United States has severed diplomatic and consular relations with Cuba (Cuba–United States relations are restored in 2015). ** Aero Flight 311 (Koivulahti air disaster): Douglas DC-3C OH-LCC of Finnish airline Finnair, Aero crashes near Kvevlax (Koivulahti), on approach to Vaasa Airport in Finland, killing all 25 on board, due to pilot error: an investigation finds that the Captain (civil aviation), captain and First officer (civil aviation), first officer were both exhausted for lack of sleep, and had consumed excessive amounts of alcohol at the time of the crash. It remains the deadliest air disaster to occur in the country. * January 5 ** Italian sculptor Alfredo Fioravanti enters the U.S. Consulate in Rome, and confesses that he was part of the team that forged the Etruscan terra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
