LAS COLINAS LANDSLIDE EL SALVADOR

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LAS COLINAS LANDSLIDEEL SALVADOR

• JANUARY 13, 2001

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LAS COLINAS LANDSLIDE

• The 13 January 2001 earthquake (M 7.7) off the
  coast of El Salvador triggered widespread
  damaging landslides in many parts of the El
  Salvador.

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LAS COLINAS LANDSLIDE

• The most damaging landslide triggered by the
  earthquake was the Las Colinas landslide from the
  steep northern flank of Balsamo Ridge.
• The landslide originated at an elevation of about
  1070 m and traveled northward a distance of
  700-800 m into the Las Colinas neighborhood of
  Santa Tecla.

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LAS COLINAS LANDSLIDE

• Once mobilized, the landslide material behaved
  as a semi-liquid mass that allowed slide material
  to travel an abnormally long distance from the
  base of the slope.
• The vertical drop from the landslide source to
  the terminus was about 160 m.
• The volume of the landslide material was about
  250,000 cubic meters.

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