A glacial lake outburst floods hazard assessment in the Patagonian Andes combining inventory data and case-studies

被引：8

作者：

Colavitto, B. ^{[1
,2
]}

Allen, S. ^{[1
]}

Winocur, D. ^{[3
]}

Guillet, S. ^{[1
]}

Dussaillant, A. ^{[1
,4
,5
,6
]}

Manchado, A. Munoz-Torrero ^{[1
]}

Gorsic, S. ^{[1
]}

Stoffel, M. ^{[1
,7
,8
]}

机构：

[1] Univ Geneva, Inst Environm Sci, Climat Change Impacts & Risks Anthropocene, Geneva, Switzerland

[2] Univ Buenos Aires, CONICET, Inst Estudios Andinos Don Pablo Groeber IDEAN, Buenos Aires, Argentina

[3] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Ciencias Geol, Inst Estudios Andinos Don Pablo Groeber,CONICET, Buenos Aires, Argentina

[4] Ctr Invest Ecosistemas Patagonia, Coyhaique, Chile

[5] Univ Aysen, Coyhaique, Chile

[6] UK Ctr Ecol & Hydrol, Wallingford, England

[7] Univ Geneva, Dept Earth Sci, Geneva, Switzerland

[8] Univ Geneva, Dept F A Forel Environm & Aquat Sci, Geneva, Switzerland

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2024年 / 916卷

关键词：

GLOF; Lakes evolution; Hazard; Climate change; Atmospheric rivers; Remote sensing; MORAINE-DAMMED LAKES; ATMOSPHERIC RIVERS; NORTHERN PATAGONIA; ICE-AGE; CATASTROPHIC DRAINAGE; CHILE; RETREAT; FAILURE; EARTHQUAKES; CHALLENGES;

D O I：

10.1016/j.scitotenv.2023.169703

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We present a glacial-related lake inventory for a region spanning 41.5 degrees - 47 degrees S in Patagonian Andes, where information on past glacier lake outburst floods (GLOF's) has hitherto remained significantly underreported. Analyzing remotely sensed images, we obtained data on 702 glacial-related lakes. Through detailed geomorphic assessments and manual supervision, we revised current inventories and added 35 GLOFs triggered from moraine/bedrock dammed lakes failures. The regional GLOF inventory presented contains information on 71 historical failures of moraine/bedrock dammed glacial lakes. From this database we analyzed outburst timing and managed to constrain 37 events occurrences within a period of 1 year. Around 40 % of them have occurred since the early 2000's, most of them originating from lakes probably formed as a delayed response to the glacial retreat imposed by the end of the Little Ice Age. On the other hand, we analyzed meteorological conditions for a sub-set of 10 events constrained within a 10-days period, finding a strong link between atmospheric rivers, cut

引用

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