| タイトル | The 19 March 1982 Eruption and Lahar at Mount Saint Helens: Implications for Martian Outlfow Channels? |
| 著者（英） | Beach, G. L. |
| 著者所属（英） | Geological Survey |
| 発行日 | 1984-04-01 |
| 言語 | eng |
| 内容記述 | A small explosive eruption of Mount St. Helens set into motion an unusually complex series of geomorphic and hydrologic processes that had not previously been described in the literature. This event was unusual in that a laterally-directed eruption dislodged and mobilized a thick snowpack from the surrounding crater floor and walls, resulting in the formation of a temporary lake. Catastrophic release of this self-impounded lake spawned a series of destructive debris avalanches and debris flows that moved rapidly down the volcano's north flank and into the North Toutle River valley. Catastrophic release of volatiles mobilized by volcanic activity has been discussed as a possible mechanism to explain a class of outflow channels on Mars. The eruption of Mount St. Helens provides a unique opportunity to study the deposits and landforms created by such an event; a more detailed field study and examination of Viking photographs of martian outflow channels is underway. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 84N23495 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/66248 |
|
