Reconstructing glacial outburst floods (jökulhlaups) from geomorphology: Challenges, solutions, and an enhanced interpretive framework ...
Glacial outburst floods (jökulhlaups) have occurred across Earth throughout the Quaternary—and during earlier glaciations—and are a significant contemporary hazard in Arctic and alpine regions worldwide (Baker, 2013; Carrivick and Tweed, 2013, 2016; Ghienne et al., 2010; Harrison et al., 2018). Thes...
| Main Authors: | , , , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | unknown |
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SAGE Journals
2022
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| Online Access: | https://dx.doi.org/10.25384/sage.c.5848302.v1 https://sage.figshare.com/collections/Reconstructing_glacial_outburst_floods_j_kulhlaups_from_geomorphology_Challenges_solutions_and_an_enhanced_interpretive_framework/5848302/1 |
| Summary: | Glacial outburst floods (jökulhlaups) have occurred across Earth throughout the Quaternary—and during earlier glaciations—and are a significant contemporary hazard in Arctic and alpine regions worldwide (Baker, 2013; Carrivick and Tweed, 2013, 2016; Ghienne et al., 2010; Harrison et al., 2018). These sudden meltwater drainage events are triggered by subglacial volcanic eruptions or dam failure or overtopping at ice-contact lakes (Björnsson, 2002; Evans and Clague, 1994; Tweed and Russell, 1999). Jökulhlaups can modify landscapes far beyond the proglacial source region and leave a legacy that can persist for millennia, eroding bedrock, redistributing sediment, and—in the case of the largest events—influencing ocean circulation and global climate (Baynes et al., 2015b; Carling, 2013; Clarke et al., 2004; Cook et al., 2018; Russell et al., 2005). Since floodwaters recede relatively quickly and are difficult to measure in real-time, geomorphologic and sedimentologic impacts are often the only lines of evidence ... |
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