| Abstract: | The cataclysmic eruption of Mount St. Helens May 18, 1980, removed 2.9 km2 (about 0.13 km3) of glacier snow and ice including a large part of Shoestring, Forsyth, Wishbone, Ape, Nelson, and all of Loowit and Leschi Glaciers. Minor eruptions and bulging of the volcano from March 27 to May 17 shattered glaciers which were on the deforming rock and deposited ash on other glaciers. Thick ash layers persisted after the May 18 eruption through the summer on most of the remaining snow and ice, and protected winter snow from melting on Swift and Dryer Glaciers. Melting and recrystalization of snow and ice surviving on Mount St. Helens could cause and lubricate mudflows and generate outburst floods. Study of glaciers that remain on this active volcano may assist in recognizing potential hazards on other volcanoes and lead to new contributions to knowledge of the transient response of glaciers to changes in mass balance or geometry. |
| Genre: | USGS Numbered Series |
| ProdID: | 4124 |
| Citation Author: | Brugman, Melinda M.; Post, Austin |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | D11 |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | |
| Citation LatN: | 46.3892 |
| Citation LatS: | 45.5477 |
| Citation LonE: | -121.5148 |
| Citation LonW: | -122.2501 |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 22 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | v, 11 p. |
| Citation Projection: | |
| Citation Public Comments: | Circular 850 consists of Chapters A-L; this publication is Chapter D |
| Citation Publisher: | U.S Geological Survey |
| Citation Series: | Circular |
| Citation Series Code: | CIR |
| Citation Series Number: | 850-D |
| Citation Search Results Text: | Effects of volcanism on the glaciers of Mount St. Helens; 1981; CIR; 850-D; Brugman, Melinda M.; Post, Austin |
| Citation Start Page: | D1 |
| Citation Volume: | |
| Citation Year: | 1981 |
| Type: | citation/reference |
| Text: | Effects of volcanism on the glaciers of Mount St. Helens; 1981; CIR; 850-D; Brugman, Melinda M.; Post, Austin |
| URL (THUMBNAIL): | http://pubs.usgs.gov/circ/1981/0850d/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/circ/1981/0850d/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S Geological Survey |
