The M6.7 EQseismo.berkeley.edu/eqw_presentations/20120210... · 2/10/2012  · The M6.7 EQ •...

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The M6.7 EQ Depth ~11 km. Thrust mechanism. Landslides triggered. Undersea; a local tsunami alert was issued following the quake but was soon cancelled. At least 48 killed, 92 missing, 100 injured; Many buildings damaged or destroyed; at least 11 bridges damaged.

Transcript of The M6.7 EQseismo.berkeley.edu/eqw_presentations/20120210... · 2/10/2012  · The M6.7 EQ •...

  • The M6.7 EQ

    • Depth ~11 km.

    • Thrust mechanism.

    • Landslides triggered.

    • Undersea; a local tsunami alert was issued following the quake but was soon cancelled.

    • At least 48 killed, 92 missing, 100 injured;

    • Many buildings damaged or destroyed; at least 11 bridges damaged.

  • Tectonics of Philippines: A Broad View

    (Bird, 2003)PhilippinesSunda plate Philippine Sea plate

  • (Yumul et al., 2008)

    East

    Luz

    on T

    roug

    h

    Philippine Trench

    Man

    ila T

    renc

    h

    Sulu T

    rench

    Neg

    ros

    Tren

    ch

    A Closer View

  • Volcanoes

    Mt. Pinatubo

  • (Yumul et al., 2008)

    East

    Luz

    on T

    roug

    h

    Philippine Trench

    Man

    ila T

    renc

    h

    Sulu T

    rench

    Neg

    ros

    Tren

    ch

    Major Faults

    Philippine Fault, ~1200 km long

  • 1948 M8.1

    1976 M8.0Tsunami. 8000+ killed.

    Seismicity

  • Significant Earthquakes (M 7.5+) in History

    8000+ killed

    5000+ killed

  • Cross-sections of seismicity

    (Bautista et al., 2001)

  • Cross-sections of seismicity: Moving Southward

  • Tomography

    (Gorbatov et al, 2003)

  • (Gorbatov et al, 2003)

    Bulk sound velocity Shear velocity

  • Resolution Test

    Bulk sound velocityInput model Shear velocity

    Slide Number 1Slide Number 2Slide Number 3Slide Number 4Slide Number 5Slide Number 6Slide Number 7Slide Number 8Slide Number 9Slide Number 10Slide Number 11Slide Number 12Tectonics of Philippines: A Broad ViewA Closer ViewVolcanoesMajor FaultsSeismicitySignificant Earthquakes (M 7.5+) in HistoryCross-sections of seismicityCross-sections of seismicity: Moving SouthwardTomographySlide Number 22Resolution Test