| Abstract: | The National Weather Service flood routing model DAMBRK is able to closely replicate field-documented stages of historic and prehistoric lahars from Mt. Rainier, Washington, and Mt. Hood, Oregon. Modeled time-of-travel of flow waves are generally consistent with documented lahar travel-times from other volcanoes around the world. The model adequately replicates a range of lahars and debris flows, including the 230 million km3 Electron lahar from Mt. Rainier, as well as a 10 m3 debris flow generated in a large outdoor experimental flume. The model is used to simulate a hypothetical lahar with a volume of 50 million m3 down the East Fork Hood River from Mt. Hood, Oregon. Although a flow such as this is thought to be possible in the Hood River valley, no field evidence exists on which to base a hazards assessment. DAMBRK seems likely to be usable in many volcanic settings to estimate discharge, velocity, and inundation areas of lahars when input hydrographs and energy-loss coefficients can be reasonably estimated. |
| Genre: | Article |
| ProdID: | 70019386 |
| Citation Author: | Costa, J. E. |
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| Citation End Page: | 30 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Environmental and Engineering Geoscience |
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| Citation Number Of Pages: | 10 |
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| Citation Search Results Text: | Hydraulic modeling for lahar hazards at cascades volcanoes; 1997; Article; Journal; Environmental and Engineering Geoscience; Costa, J. E. |
| Citation Start Page: | 21 |
| Citation Volume: | 3 |
| Citation Year: | 1997 |
| Type: | citation/reference |
| Text: | Hydraulic modeling for lahar hazards at cascades volcanoes; 1997; Article; Journal; Environmental and Engineering Geoscience; Costa, J. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1997 00:00 -0600 |
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