Refraction profiles in the Valley of Ten Thousand Smokes, Katmai, Alaska
Sbar ML and Matumoto T. 1972. Refraction profiles in the Valley of Ten Thousand Smokes, Katmai, Alaska. Bulletin of Volcanology. 35(2):335-349
(Adapted from authors' abstract.) Three refraction profiles were made in 1967 across the upper end of the Valley of Ten Thousand Smokes to determine the thickness and structure of the 1912 ash flow. The tuff is composed of a thin surficial layer approximately one-half meter thick and a main body that varies from 20 to over 70 meters in depth in the areas surveyed. Two to three layers were discerned in the main body of the tuff, suggesting that the eruption may have occurred in more than one phase. The greatest thickness of the deposit is in the vicinity of Novarupta, and this suggests that Novarupta was a major source of the tuff. The estimated volume of the tuff is approximately 3.8 cubic km, based on an average thickness of 30 m and an area of 127 km2. Refers to the 1912 eruption of Katmai.
- Type
- Journal Article
- Authors
- Sbar, M; Matumoto, T
- Units
- KATM
- Keywords
- Ash, Geology, Katmai eruption, Katmai National Park And Preserve, Mt. Katmai, Novarupta, Tuff, Valley Of Ten Thousand Smokes, Volcanic Eruptions, Volcanoes