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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.
| 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 |
| Volume | 221 |
| Issue | 4618 |
| Year Published | 1983 |
| Language | English |
| Contributing office(s) | Volcano Hazards Program |
| Description | 4 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Science |
| First page | 1394 |
| Last page | 1397 |
| Google Analytic Metrics | Metrics page |