moonquake
Quick Summary
A moonquake is a seismic event that occurs on the Moon. While less common and weaker than earthquakes, some moonquakes can register up to 5.5 on the Richter scale. These seismic events on the Moon are detected using seismographs, similar to those used on Earth.1234
Moonquakes can be categorized into three types:
* Events caused by the impact of space debris like meteorites or parts of spacecraft.4
* Natural moonquakes originating from the Moon's interior, likely due to rock fracturing.4
* Deep moonquakes with focal depths between 600 and 1,000 km.4
* Shallow moonquakes, which are less common.4
Vibrations from shallow moonquakes can last longer than earthquakes, sometimes exceeding ten minutes. The low level of ground noise on the Moon allows seismographs to operate at high magnifications, enabling the detection of distant meteorite impacts.24
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earthquakeExtraterrestrial seismic phenomena…detected between 600 and 3,000 moonquakes during each year of their operation, though most of these seismic events were very small. The ground noise on the lunar surface is low compared with that of the Earth, so that the seismographs could be operated at very high magnifications. Because there was…
Read More…detected between 600 and 3,000 moonquakes during each year of their operation, though most of these seismic events were very small. The ground noise on the lunar surface is low compared with that of the Earth, so that the seismographs could be operated at very high magnifications. Because there was…
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MoonInternal activity of the past and presentMany of the moonquakes detected seem to be only small “creaks” during the Moon’s continual adjustment to gravity gradients in its eccentric orbit, while others are caused by meteorite impacts or thermal effects. Quakes of truly tectonic origin seem to be uncommon. The small quakes that do occur…
Read MoreMany of the moonquakes detected seem to be only small “creaks” during the Moon’s continual adjustment to gravity gradients in its eccentric orbit, while others are caused by meteorite impacts or thermal effects. Quakes of truly tectonic origin seem to be uncommon. The small quakes that do occur…
Read More