Chen, H.; Liang, Q.; Xiao, W.

Outburst flood simulations of various dam failure scenarios from Tsho Rolpa glacial lake, Nepal, 2020

This dataset contains maximum water depth and maximum water velocity for 12 different Glacial Lake outburst floods (GLOFs) scenarios of the Tsho Rolpa Lake, Nepal. Also included is the water depth of dam breach flow and discharge of dam breach flow under each scenario. The GLOFs scenarios were created using a simple dam breach model. A high-performance hydrodynamic model was then used to simulate the resulting flood hydrodynamics.

Publication date: 2021-10-07

Get the data

This dataset is available under the terms of the Open Government Licence

This data is available as Comma-separated values (CSV) or TIFF

You must cite: Chen, H.; Liang, Q.; Xiao, W. (2021). Outburst flood simulations of various dam failure scenarios from Tsho Rolpa glacial lake, Nepal, 2020. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/f4292d99-de93-4a28-a821-b2a6a826df4c

 

Where/When

Study area
Temporal extent
2020-03-31    to    2020-03-31

Provenance & quality

A commonly used empirical breach model was adopted to represent the dam breach formation process caused by overtopping. The breach was assumed to start from a small channel formed at the dam crest (initial breach) and grows into a trapezoidal shape with a side-slope of 1:1 during the time of failure. The model further assumes an initial breach depth and a final breach depth, which can be quantified and prescribed according to current dam conditions. A fully hydrodynamic model based on the 2-D depth-averaged shallow water equations (SWEs) was adopted to predict the flooding processes driven by the flow out of the breach of the moraine dam.

Correspondence/contact details

Xiao, W.
Newcastle University
 wen.xiao@ncl.ac.uk

Authors

Chen, H.
Loughborough University
Liang, Q.
Loughborough University
Xiao, W.
Newcastle University

Other contacts

Custodian
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Publisher
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Rights Holder
Loughborough University
 enquiries@lboro.ac.uk

Additional metadata

Topic categories
Inland Waters
Keywords
Glacial lake outburst floods,  Hydrodynamic flood modelling
INSPIRE Theme
Hydrography
Funding
Natural Environment Research Council Award: NE/S005919/1
Spatial representation types
Raster
Tabular (text)
Spatial reference system
WGS 84
Last updated
08 October 2021 10:45