Tuesday, April 1, 2014

Links and comments on M8.2 - 95km NW of Iquique, Chile April 2, 2014

This evening there was a M8.2 earthquake along the northern Chilean subduction zone. It caused very strong shaking along the Chilean coast. There have been numerous aftershocks. It was appropriately configured to generate a tsunami. Max heights in the source region are 2 m. It appears that beyond Chile and Peru the tsunami concerns are low (I saw that the expectation was ~20 cm in coastal California).

The Chilean portion of the subduction zone along western South America has generated the largest recorded earthquake historically (in 1960 M9.5; That was on the southern end of the zone). This is in an area where there has been some strong locking noted.

Here are some links:

  • USGS main page: Summary Includes estimated losses (pager) and also expected (shakemap) and felt (dyfi) intensities.
  • Here is low dip focal mechanism consistent with expectations: scientific

Here is the IRIS Teachable moment page. I has some nice content for presentations on the event.

This map may work to show the local seismicity: http://earthquake.usgs.gov/earthquakes/map/ Navigate to the region and zoom in.
Try this one too: http://www.iris.edu/seismon/ see this: Regional focus

Pacific Tsunami warning center: Pacific region see the Pacific region statement: text Here is the forecast tsunami height map and the travel time map

This site is accumulating observations: http://earthquake-report.com/2014/04/01/massive-earthquake-offshore-tarapaca-chile-on-april-1-2014/

Image showing degree of seismic coupling and location: http://t.co/rgwmyacIw1. See this paper: http://gji.oxfordjournals.org/content/194/3/1283.full

Good blog entries:
Quakehunters

Here are a few useful news links:
http://www.latimes.com/world/worldnow/la-fg-wn-chile-quake-larger-20140401,0,2045484.story#axzz2xgQBG1Wx
http://santiagotimes.cl/8-2-quake-hits-northern-chile-triggering-regional-pacific-wide-tsunami-warning/

Some more educational links:
Tsunamis Generated by Megathrust Earthquakes from IRIS

1 comment:

  1. We open to public RRIM of Oso landslide in 2013.
    Under courtesy of the Puget Sound Lidar Consortium thanks to provide airborne Lidar data acquired in 2013, Asia Air Survey made a topographic map with 1m grid, called Red Relief Image Map (RRIM), which is our patented technique visualizing topographic feature.
    We believe understanding actual topographic feature and landslide mechanism reduce victims of disaster.
    http://www.ajiko.co.jp/en/recent_activations02.html

    ReplyDelete