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Earthquake Hazards Program

Magnitude 5.6 LOYALTY ISLANDS

Friday, July 20, 2007 at 17:23:57 UTC

Preliminary Earthquake Report

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Magnitude 5.6
Date-Time
  • Friday, July 20, 2007 at 17:23:57 (UTC) - Coordinated Universal Time
  • Saturday, July 21, 2007 at 04:23:57 AM local time at epicenter

  • Time of Earthquake in other Time Zones
    Location 20.79S 168.42E
    Depth 38 kilometers
    Region LOYALTY ISLANDS
    Distances 95 km (60 miles) NE of Tadine, Loyalty Islands, New Caledonia
    165 km (100 miles) SSW of Isangel, Tanna, Vanuatu
    260 km (160 miles) NE of NOUMEA, New Caledonia
    1725 km (1070 miles) ENE of BRISBANE, Queensland, Australia
    Location Uncertainty Error estimate: horizontal +/- 9.0 km; depth +/- 14.4 km
    Parameters Nst=127, Nph=127, Dmin=1550.1 km, Rmss=0.91 sec, Erho=9.0 km, Erzz=14.4 km, Gp=74.4 degrees
    Source USGS NEIC (WDCS-D)
    Event ID usfabf

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    Historic Seismicity

    Theoretical P-Wave Travel Times

     NEIC Moment Tensor Solution

     Global CMT Project Moment Tensor Solution

     Historic Moment Tensor Solutions

    Phase (Arrival Time) Data

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    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.

    The region name is an automatically generated name from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme. The boundaries of these regions are defined at one-degree intervals and therefore differ from irregular political boundaries. More->

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

     


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