Eruption-triggered avalanche, flood, and lahar at Mount St. Helens - Effects of winter snowpack
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Abstract
An explosive eruption of Mount St. Helens on 19 March 1982 had substantial impact beyond the vent because hot eruption products interacted with a thick snowpack. A blast of hot pumice, dome rocks, and gas dislodged crater-wall snow that avalanched through the crater and down the north flank. Snow in the crater swiftly melted to form a transient lake, from which a destructive flood and lahar swept down the north flank and the North Fork Toutle River.
Suggested Citation
Waitt, R.B., Pierson, T., MacLeod, N.S., Janda, R.J., Voight, B., and Holcomb, R.T., 1983, Eruption-triggered avalanche, flood, and lahar at Mount St. Helens - Effects of winter snowpack: Science, v. 221, no. 4618, p. 1394-1397, https://doi.org/10.1126/science.221.4618.1394.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Eruption-triggered avalanche, flood, and lahar at Mount St. Helens - Effects of winter snowpack |
| Series title | Science |
| DOI | 10.1126/science.221.4618.1394 |
| Volume | 221 |
| Issue | 4618 |
| Year Published | 1983 |
| Language | English |
| Publisher | American Association for the Advancement of Science |
| Contributing office(s) | Volcano Hazards Program |
| Description | 4 p. |
| First page | 1394 |
| Last page | 1397 |
| Country | United States |
| State | Washington |
| Other Geospatial | Mount St. Helens |