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Earthquakes UPSC NOTE

 Can heavy snowfall and rain contribute to some earthquakes?

  • A recent study has found that episodes of heavy snowfall and rain likely contributed to a swarm of earthquakes.

  • Over the past several years in northern Japan.

  • This is the first time that climate conditions have been found to initiate some quakes.

  • The seismic activity in the region was surprisingly found to synchronise with certain changes in underground pressure.

  • Those changes were influenced by seasonal patterns of snowfall and precipitation

  • Scientists suspect that this new connection between quakes and climate may not be unique to Japan.

  • Since late 2020, hundreds of small earthquakes — earthquake swarms — have shaken up Japan’s Noto Peninsula.

  • In 2020 changes in seismic velocity appeared to be synchronised with the seasons.

  • When it rains or snows, that adds weight, which increases pore pressure, which allows seismic waves to travel through slower. 

  • When the seismic velocity observations and the model of excess pore pressure were overlapped, they fit extremely well.



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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Earthquakes UPSC NOTE
Earthquakes UPSC NOTE
Learnerz IAS | Concept oriented UPSC Classes in Malayalam
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