![]() The best exposures of these deposits occur in the southern gullies of the volcano where Heim Coefficients (H/L) were obtained for the various types of flows. They started with gravitanional dome collapse (block-and-ash flow deposits, Merapi-type), changed to dome collapse triggered by a Vulcanian explosion (block-and-ash flow deposits, Soufriere-type), then ended with the partial collapse of a Plinian column (ash-flow deposits rich in pumice or scoria,). Among these events, the pyroclastic flows are most interesting because their generation mechanisms changed with time. The 18-24 January 1913 eruption of Colima Volcano consisted of three eruptive phases that produced a complex sequence of tephra fall, pyroclastic surges and pyroclastic flows, with a total volume of 1.1 km(3) (0.31 km(3) DRE). URL: Mots-clés: DEPOSITS AVALANCHES SURGES EMPLACEMENT GENERATION JAPAN Résumé: Source: Journal of Volcanology and Geothermal Research, Volume 139, Ticket 1-2, p.103-115 (2005) ISBN: 0377-0273 ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
March 2023
Categories |