Chile Earthquake Update: Mw 6.5 Aftershock

  • Thread starter davenn
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In summary, the coast of Chile has experienced several large earthquakes, including a Mw 6.8 main shock and a Mw 6.3 aftershock. There were also multiple aftershocks, with the largest being a Mw 6.5. However, there is no reported threat of a tsunami.
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davenn
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The coast of Chile has been getting hammered with several large quakes over the last couple of days

from my seismograph ...

200901 UT Mw6.8 and 6.5 cstl Chile zhi.gif


The upper trace comprises of a Mw 6.8 main shock and a Mw6.3 aftershock approx 20 minutes later

The lower trace recorded this morning my time, 2 Sept 2020 is a Mw 6.5 aftershockDave
 
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M 6.8 - 85 km NW of Vallenar, Chile
https://earthquake.usgs.gov/earthquakes/eventpage/us7000bfjr/executive
  • 2020-09-01 04:09:28 (UTC)
  • 27.969°S 71.305°W
  • 23.0 km depth


M 6.3 - 81 km NW of Vallenar, Chile
https://earthquake.usgs.gov/earthquakes/eventpage/us7000bfjx/executive
  • 2020-09-01 04:30:02 (UTC)
  • 28.026°S 71.305°W
  • 18.7 km depth
M 6.5 - 95 km NW of Vallenar, Chile
https://earthquake.usgs.gov/earthquakes/eventpage/us7000bg4v/executive
  • 2020-09-01 21:09:17 (UTC)
  • 27.929°S 71.394°W
  • 14.3 km depth
There were many earthquakes of lesser magnitude
https://earthquake.usgs.gov/earthquakes/map/?currentFeatureId=us7000bfjr&extent=-28.80858,-72.43835&extent=-27.28637,-69.65057&range=search&baseLayer=terrain&timeZone=utc&search={"name":"Search Results","params":{"endtime":"2020-09-26T06:39:41.461Z","latitude":-27.945,"longitude":-71.6385,"maxradiuskm":250,"minmagnitude":1,"starttime":"2020-08-15T06:39:41.461Z"}}

There apparently was no tsunami threat.
https://www.gdacs.org/report.aspx?eventtype=EQ&eventid=1232581
https://www.tsunami.gov/?p=PHEB/2020/09/01/20245000/1/WEPA42
 
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Related to Chile Earthquake Update: Mw 6.5 Aftershock

1. What caused the Chile earthquake and aftershock?

The earthquake and aftershock were caused by movement along the boundary of the South American and Nazca tectonic plates, which meet along the coast of Chile. This area is known for frequent seismic activity due to the subduction of the Nazca plate beneath the South American plate.

2. How strong was the aftershock compared to the initial earthquake?

The aftershock was measured at a magnitude of 6.5, which is significantly lower than the initial earthquake's magnitude of 7.1. However, aftershocks can still be dangerous and cause further damage, especially in areas that have already been weakened by the initial earthquake.

3. Are there any potential risks or hazards following the aftershock?

There is a risk of further aftershocks following the initial earthquake and aftershock. These aftershocks can cause additional damage and may also trigger landslides and tsunamis. It is important for residents in the affected areas to stay informed and follow any evacuation orders or safety precautions.

4. How can scientists predict and monitor aftershocks?

Scientists use seismometers to monitor seismic activity and can use this data to predict where and when aftershocks may occur. However, it is not possible to predict the exact timing or magnitude of an aftershock, so it is important to be prepared for any potential aftershocks following a major earthquake.

5. Is there a way to help those affected by the Chile earthquake and aftershock?

There are many organizations and charities that are providing aid and support to those affected by the earthquake and aftershock in Chile. Donating to these organizations or volunteering your time and resources can make a positive impact on the recovery efforts for those affected by the disaster.

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