Lake Maninjau Landslides

akizzee — Tue, 13 Oct 2009 11:32:30 +0000

Lake Maninjou is a volcanic crater with an average rim to lake elevation change of 2000 ft. The southern quarter of the lake experienced much greater ground motion than the rest of the lake , and this resulted in major
landsliding on the southern rim of the crater. Approximately 25% of the southern rim experienced slides, burying parts of villages and displacing at least 2000 residents.

Most of the slides were not extremely powerfull and did not reach the lake shore, but at least 3 slides carried debris all the way to the shore. The largest slide was approximately 200 feet wide and buried 6 houses.

Heavy rains the night after the earthquake caused additional mudslides that damage more housing.

Overall view of slides on south face of crater

Largest slide source and path (200 ft wide)

House buried in 6 ft. of mud

Padang Earthquake Clearinghouse » Geotechnical Observations

Lake Maninjau Landslides