India Science2 min read
India Science
Maharashtra Logs 29 Small Earthquakes in a Fortnight: What an Earthquake Swarm Is
Nashik, Palghar and Nagpur recorded 29 shallow tremors in two weeks, the strongest a magnitude-4.3 quake in Nagpur on August 8. Seismologists call the pattern an earthquake swarm — one Maharashtra has seen often before.
Maharashtra has experienced a spate of small earthquakes over the last fortnight, according to local reports. Of the 29 tremors recorded in this period, 24 were in and around Nashik, four were in Palghar and one was in Nagpur. None was particularly strong — the largest, in Nagpur on August 8, measured 4.3 — but all were shallow, occurring at depths of around 5-8 km.
Seismologists call this pattern of many small quakes clustered in one area over a short period an . It is not a new phenomenon for the state: Maharashtra has experienced such swarms often before, The Hindu's explainer notes.
An earthquake is a sudden movement of rocks along a — a fracture or region of weakness in the Earth's crust. In some places, friction can prevent two blocks of rock from sliding past each other.
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#earthquake swarm#Maharashtra#Nashik#seismology#India
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