Photo Information

Scar of landslide on south side of Casita Volcano, Nicaragua
Photograph by K.M. Scott on March 23, 1999

View looking up the pathway of the landslide on the south flank of Casita Volcano. The landslide eroded into the volcano's lower flank, incorporating both sediment and water into its growing mass. Because the landslide was wet at the start (from rainfall during the hurricane) and picked up a significant volume of water as it moved downslope, it became diluted by the time it reached the base of the volcano. The landslide transformed into a hyperconcentrated flow (40-80% sediment by weight) before spreading beyond the volcano.

 

Back to Landslide and lahar at Casita Volcano, Nicaragua

 

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U.S. Department of the Interior, U.S. Geological Survey, Menlo Park, California, USA
URL http://volcanoes.usgs.gov/Imgs/Jpg/Casita/30710609_022_caption.html
Contact: VHP WWW Team
Last modification: 13 November 1999 (SRB)