Baja California rattled by earthquake swarm

February 14, 2011 BAJA, Ca – 19 quakes have rattled this region over the past seven days, with some of the heaviest activity coming in the last 48 hours. Agitation along the Nazca plate bordering Chile continues to unsettle neighboring tectonic plates, particularly the Pacific plate which impinges through southern Califorina. The frenzied Pacific plate happens to be dueling with the North American plate for a prized piece of the Califonia landscape. Faults ripple through the Southern California geology as a result of this agitation and the increasing stress of seismic forces. Seismic turbulence throughout California can be expected to intensify over the years as tectonic stress factors continue to build.
(c) The Extinction Protocol
This entry was posted in Earth Changes, Planetary Tremor Event, Seismic tremors. Bookmark the permalink.

1 Response to Baja California rattled by earthquake swarm

  1. Laura says:

    Just wanted to share this. I sent the USGS an email asking why some events “disappear” or get “deleted”… specifically the 4.6 that hit Yellowstone a few days ago. I’m not sure I believe them, but here is their response:

    Thank you for contacting ASK USGS.

    Please note the following statement from University of Utah regarding its seismograph stations that monitor Yellowstone.

    Beginning October 1, 2010, the University of Utah Seismograph Stations has reduced the magnitude threshold for public web posting of automated earthquake locations and magnitudes for the Yellowstone region. The new minimum magnitude threshold is M 1.5, reduced from the previous threshold of M 2.5. The new threshold value will allow more earthquake information to be rapidly released to the public and other users. This lower magnitude threshold will be tested during a trial period and may be increased again.

    Small earthquakes are common in the Yellowstone region. With the reduced magnitude threshold for web posting of automated earthquake locations and magnitudes, it will no longer be practical for seismologists to continue the practice of reviewing all of this information immediately after posting. Users of these data should be aware that an unreviewed earthquake report can be significantly in error and might even be a false alarm, regardless of the reported magnitude. The University of Utah Seismograph Stations will continue its policy of including only reviewed events in its finalized earthquake catalog.

    From the USGS Earthquake Hazards Program FAQ’s:

    Q: Why do some earthquakes disappear?

    We hope this information is helpful. Please feel free to contact the USGS again.

    USGS-Rolla, MO
    Communications and Publishing
    Science Information
    888-ASK-USGS (275-8747)
    Follow us on Twitter: @USGSASK


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