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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 ...
The earthquake moved Honshu 2.4 m (8 ft) east, shifted the Earth on its axis by estimates of between 10 and 25 cm (4 and 10 in), [65] [66] [67] increased Earth's rotational speed by 1.8 μs per day, [68] and generated infrasound waves detected in perturbations of the low-orbiting Gravity Field and Steady-State Ocean Circulation Explorer ...
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 ...
Clicking on a hotspot like the one below lets you see that the rift velocity shot up suddenly in these areas on these dates, as the continents shifted apart relatively quickly: geo earth pangea NASA
Earthquakes early Monday again struck Japan's north-central region of Ishikawa, still recovering from the destruction left by a powerful quake on Jan. 1, but the latest shaking caused no major damage.
The Earthquake Research Institute at the University of Tokyo found that the sandy coastline in western Japan shifted by up to 250 meters (820 feet) seaward in some places.
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.
A 7.1-magnitude earthquake rocked the southern coast of Japan on Thursday, Aug. 8, prompting the country to issue its first “megaquake” warning.