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Magnitude 6.1 OFFSHORE TARAPACA, CHILE

Friday, April 17, 2009 at 02:08:08 UTC

Preliminary Earthquake Report

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Magnitude 6.1
Date-Time
  • Friday, April 17, 2009 at 02:08:08 (UTC) - Coordinated Universal Time
  • Thursday, April 16, 2009 at 10:08:08 PM local time at epicenter

  • Time of Earthquake in other Time Zones
    Location 19.57S 70.45W
    Depth 25 kilometers
    Region OFFSHORE TARAPACA, CHILE
    Distances 75 km (50 miles) NNW of Iquique, Chile
    120 km (75 miles) S of Arica, Chile
    175 km (110 miles) S of Tacna, Peru
    1530 km (950 miles) N of SANTIAGO, Chile
    Location Uncertainty Error estimate: horizontal +/- 4.3 km; depth fixed by location program
    Parameters Nst=338, Nph=338, Dmin=361.1 km, Rmss=0.86 sec, Erho=4.3 km, Erzz=0 km, Gp=30.0 degrees
    Source USGS NEIC (WDCS-D)
    Remarks Felt (V) at Cuya, Huara, Alto Hospicio and Pisagua; (IV) at Arica, Camina, Pica, Pozo Almonte and Putre. Also felt (II) at Moquegua and Tacna.
    Event ID usfnaf

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    Historic Seismicity

    Theoretical P-Wave Travel Times

     USGS Body-Wave Moment Tensor Solution

     Global CMT Project Moment Tensor Solution

     Historic Moment Tensor Solutions

    Energy and Broadband Solution

    Phase (Arrival Time) Data

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    Earthquake Information for Chile

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    Earthquakes: Frequently Asked Questions

    NB: The official magnitude for this earthquake is indicated at the top of this page. This was the best available estimate of the earthquake's size, at the time that this page was created. Other magnitudes associated with web pages linked from here are those determined at various times following the earthquake with different types of seismic data. Although, given the data used, they are legitimate estimates of magnitude they are not considered the official magnitude.

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    Preliminary Earthquake Report
    U.S. Geological Survey, National Earthquake Information Center
    World Data Center for Seismology, Denver


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