Magnitude 5.7 earthquake — Mid-Indian Ridge
A magnitude 5.7 earthquake struck near Mid-Indian Ridge at a depth of about 10 km. Details, shaking intensity and any tsunami information are on the USGS event page.
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The Mid-Indian Ridge is an underwater mountain range running through the middle of the Indian Ocean. It marks the boundary where two of the Earth's tectonic plates are moving apart, causing the oceanic crust to gradually separate and new rock to form between them.
Earthquakes are common along mid-ocean ridges because of this constant movement of the Earth's crust. The ridges are the most seismically active places on the planet, though earthquakes in these remote ocean areas rarely affect people living on land.
This earthquake occurred in a region where such seismic activity is routine rather than exceptional. Because the Mid-Indian Ridge is distant from densely populated areas, earthquakes here typically pose minimal risk to people, though scientists monitor all such events to better understand how the Earth's crust moves.