USGS/Cascades Volcano Observatory, Vancouver, Washington
FACT SHEET:
Detecting Debris Flows Using Ground Vibrations
--
Richard G. Lahusen, 1996,
Detecting Debris Flows Using Ground Vibrations:
U.S. Geological Survey Fact Sheet 236-96
Introduction
Debris flows are rapidly flowing mixtures of rock debris, mud, and water
that originate on steep slopes. During and following volcanic eruptions, debris flows are
among the most destructive and persistent hazards. Debris flows threaten lives and
property not only on volcanoes but far downstream in valleys that drain volcanoes
where they arrive suddenly and inundate entire valley bottoms. Debris flows can
destroy vegetation and structures in their path, including bridges and buildings. Their
deposits can cover roads and railways, smother crops, and fill stream channels,
thereby reducing their flood-carrying capacity and navigability.
Return to:
[Report Menu] ...
URL for CVO HomePage is:
<http://vulcan.wr.usgs.gov/home.html>
URL for this page is:
<http://vulcan.wr.usgs.gov/Projects/AFM/Publications/FS236-96/introduction.html>
If you have questions or comments please contact:
<GS-CVO-WEB@usgs.gov>
10/18/05, Lyn Topinka