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Karrat Fjord (Greenland) tsunamigenic landslide of 17 June 2017: initial 3D observations.
- Source :
-
Landslides . Feb2018, Vol. 15 Issue 2, p327-332. 6p. - Publication Year :
- 2018
-
Abstract
- On 17 June 2017, a landslide-generated tsunami reached the village of Nuugaatsiaq, Greenland, leaving four persons missing and presumed dead. Here, we present a preliminary high-resolution analysis of the tsunamigenic landslide scar based on three-dimensional (3D) reconstructions of oblique aerial photographs taken during a post-failure reconnaissance helicopter overflight. Through a 3D quantitative comparison with pre-failure topography, we estimate that approximately 58 million m3 of rock and colluvium (talus) was mobilized during the landslide, 45 million m3 of which reached the fjord, resulting in a destructive tsunami. We classify this event as a “tsunamigenic extremely rapid rock avalanche,” which likely released along a pre-existing metamorphic fabric, bounded laterally by slope-scale faults. Further analysis is required to properly characterize this landslide and adjacent unstable slopes, and to better understand the tsunami generation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1612510X
- Volume :
- 15
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Landslides
- Publication Type :
- Academic Journal
- Accession number :
- 127794747
- Full Text :
- https://doi.org/10.1007/s10346-017-0926-4