气候变化领域集成服务门户(CCPortal): Formation of water flow in lahars from active glacierclad volcanoes

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DOI	10.21782/KZ1560-7496-2017-6(118-128)
	Formation of water flow in lahars from active glacierclad volcanoes
	Seynova I.B.; Chernomorets S.S.; Dokukin M.D.; Petrakov D.A.; Savernyuk E.A.; Lukashov A.A.; Belousova E.A.
发表日期	2017
ISSN	15607496
卷号	21 期号:6
英文摘要	Glaciers and snow cover on volcanoes are among main sources of water content in lahars. Review of open databases on volcanoes, modern glaciers and snow cover allowed us to identify 144 glacier-clad volcanoes as well as 226 volcanoes with and 298 volcanoes without annual snow cover. We compiled a sketch map which illustrates the global distribution of volcanoes covered with ice and snow and analyzed available reports on lahars from such volcanoes. Evidence on eruptions of Redoubt (Alaska, 1989-1990) and Nevado del Ruiz (Colombia, 1985) volcanoes made basis for a plausible model explaining the transformation of volcanic (eruption) to hydrological (lahar) processes. Interaction of pyroclastic flow with snow and ice which causes their melting occurs by the mechanisms of convective mixing and rapid turbulent heat exchange, respectively. The melting rate at turbulent heat transfer is at least ten times faster than that of static melting under eruption products. © Academic Publishing House Geo. All rights reserved.
英文关键词	Lahar; Lava flow; Nival-glacial zone; Paroxysmal eruption; Phreatic blast; Pyroclastic flow; Slush flow; Tephra; Thermodynamic processes; Volcano
学科领域	glacier; heat transfer; lahar; lava flow; melting; mixing; phreatic zone; pyroclastic flow; snow cover; tephra; thermodynamics; turbulent flow; volcanic eruption; volcano; water content; water flow
语种	英语
scopus关键词	glacier; heat transfer; lahar; lava flow; melting; mixing; phreatic zone; pyroclastic flow; snow cover; tephra; thermodynamics; turbulent flow; volcanic eruption; volcano; water content; water flow
来源期刊	Earth's Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119479
作者单位	Lomonosov Moscow State University, Faculty of Geography, 1, Leninskie Gory, Moscow, 119991, Russian Federation; High-Mountain Geophysical Institute, 2, Lenina prosp., Nalchik, Kabardino-Balkaria Republic, 360030, Russian Federation
推荐引用方式 GB/T 7714	Seynova I.B.,Chernomorets S.S.,Dokukin M.D.,et al. Formation of water flow in lahars from active glacierclad volcanoes[J],2017,21(6).
APA	Seynova I.B..,Chernomorets S.S..,Dokukin M.D..,Petrakov D.A..,Savernyuk E.A..,...&Belousova E.A..(2017).Formation of water flow in lahars from active glacierclad volcanoes.Earth's Cryosphere,21(6).
MLA	Seynova I.B.,et al."Formation of water flow in lahars from active glacierclad volcanoes".Earth's Cryosphere 21.6(2017).