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Intensity 7. The Intensity 7 ( 震度7, Shindo 7) is the maximum intensity in the Japan Meteorological Agency seismic intensity scale, covering earthquakes with an instrumental intensity (計測震度) of 6.5 and up. [15] At Intensity 7, it becomes impossible to move at will. [13] The intensity was created following the 1948 Fukui earthquake.
Momentmagnitude-skalaen. Momentmagnitude-skalaen, Moment Magnitude Scale (MMS) med benævnelsen MW eller blot M, er en skala som bruges af seismologer til at sammenligne energiudladninger fra jordskælv. Den blev introduceret i 1979 af Thomas C. Hanks og Hiroo Kanamori som en efterfølger til Richterskalaen . I momentmagnitudeskalaen indgår ...
The surface wave magnitude ( ) scale is one of the magnitude scales used in seismology to describe the size of an earthquake. It is based on measurements of Rayleigh surface waves that travel along the uppermost layers of the Earth. This magnitude scale is related to the local magnitude scale proposed by Charles Francis Richter in 1935, with ...
1,000–6,000 [5] The 1960 Valdivia earthquake and tsunami (Spanish: Terremoto de Valdivia) or the Great Chilean earthquake ( Gran terremoto de Chile) on 22 May 1960 was the most powerful earthquake ever recorded. Various studies have placed it at 9.4–9.6 on the moment magnitude scale. [1] It occurred in the afternoon (19:11 GMT, 15:11 local ...
Articles using Mww magnitude scale. This is a tracking category. It is used to build and maintain lists of pages—primarily for the sake of the lists themselves and their use in article and category maintenance. It is not part of the encyclopedia's categorization scheme. More information: Administrators: Please do not delete this category as ...
Map of the main quake and aftershocks ( map data) On April 5, 2024, at 10:23 EDT (14:23 UTC ), a Mw 4.8 earthquake occurred in the U.S. state of New Jersey, with the epicenter in Tewksbury Township. While it was felt across the New York metropolitan area, Delaware Valley, the Washington D.C metropolitan area, and other parts of the northeastern ...
Rossi–Forel scale. The Rossi–Forel scale was one of the first seismic scales to represent earthquake intensities. Developed by Michele Stefano Conte de Rossi of Italy and François-Alphonse Forel of Switzerland during the late 19th century, it was used commonly for about two decades until the introduction of the Mercalli intensity scale in ...
