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The Japan Meteorological Agency (JMA) officially named this earthquake the 2024 Noto Peninsula earthquake (Japanese: 令和6年能登半島地震, Hepburn: Reiwa 6-nen Noto-hantō Jishin). [6] It led to Japan's first major tsunami warning since the 2011 Tōhoku earthquake , [ 7 ] and a tsunami of 7.45 m (24 ft) was measured along the Sea of ...
The geographic poles are defined by the points on the surface of Earth that are intersected by the axis of rotation. The pole shift hypothesis describes a change in location of these poles with respect to the underlying surface – a phenomenon distinct from the changes in axial orientation with respect to the plane of the ecliptic that are caused by precession and nutation, and is an ...
A seismogram recorded in Massachusetts, United States. The magnitude 9.1 (M w) undersea megathrust earthquake occurred on 11 March 2011 at 14:46 JST (05:46 UTC) in the north-western Pacific Ocean at a relatively shallow depth of 32 km (20 mi), [9] [56] with its epicenter approximately 72 km (45 mi) east of the Oshika Peninsula of Tōhoku, Japan, lasting approximately six minutes.
In Japan, the Shindo scale is commonly used to measure earthquakes by seismic intensity instead of magnitude. This is similar to the Modified Mercalli intensity scale used in the United States, the Liedu scale used in China or the European Macroseismic Scale (EMS), meaning that the scale measures the intensity of an earthquake at a given location instead of measuring the energy an earthquake ...
On January 13, 2025, at 9:19pm JST, a 6.9 M JMA earthquake struck less than 10 km (6.2 mi) away from the August 8, 2024 earthquake at a depth of 30 km (19 mi), causing tremors recorded as a 5- on the JMA seismic intensity scale [15] and an observed 20cm tsunami in Miyazaki Prefecture.
[26] [6] Meanwhile, the Earthquake Research Committee from the Japanese government said the earthquake ruptured along a 45 km-long, north–south striking fault that dips towards the east. [27] According to the US Geological Survey, the earthquake struck at a depth of 44.0 km (27.3 mi), while the JMA placed its depth at 55 km (34 mi). [25]
The quake was generated by the movement of the Kamishiro fault. The focal mechanism of which suggested reverse faulting on an eastward-dipping fault extending in the north–south direction. The quake was also had a pressure axis in the west-northwest-east-southeast direction, and is considered to be a shallow earthquake.
The earthquake had a focal mechanism corresponding to reverse faulting. [10] A magnitude 5.6 aftershock struck the area at 21:58 JST, succeeded by another aftershock, at 23:18 JST of magnitude 4.5, along with over 50 other aftershocks hitting on Saturday, between magnitude 2 and 5.