Peak Flood Discharge from a Landslide Dam Outburst
AbstractA rapid method for estimating the peak discharge from a breached landslide dam is developed from an analysis of 42 outburst floods. Systematic classification of the river blockages based on the landslide type, its material composition, and its travel distance is used to assess the erodibilit...
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| Veröffentlicht in: | Natural hazards review 2022-05, Vol.23 (2) |
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| description | AbstractA rapid method for estimating the peak discharge from a breached landslide dam is developed from an analysis of 42 outburst floods. Systematic classification of the river blockages based on the landslide type, its material composition, and its travel distance is used to assess the erodibility of a dam. The blockage erodibility, along with the impoundment’s characteristics, controls the size (height and width) of a breach and the speed at which it forms, which determines the peak discharge. Three categories or types of landslide dams are identified to quantify their relative erodibility. A regression equation is developed to predict an outburst flood peak discharge based on the blockage type, the dam height, and the volume of impounded water at the time of breaching. Prediction limits are also calculated, which provide a sound statistical assessment of the possible peak outflow range. With the potential consequence known, the downstream population’s orderly evacuation can be carried out when a landslide dam failure is approaching. |
| doi_str_mv | 10.1061/(ASCE)NH.1527-6996.0000545 |
| format | Article |
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Systematic classification of the river blockages based on the landslide type, its material composition, and its travel distance is used to assess the erodibility of a dam. The blockage erodibility, along with the impoundment’s characteristics, controls the size (height and width) of a breach and the speed at which it forms, which determines the peak discharge. Three categories or types of landslide dams are identified to quantify their relative erodibility. A regression equation is developed to predict an outburst flood peak discharge based on the blockage type, the dam height, and the volume of impounded water at the time of breaching. Prediction limits are also calculated, which provide a sound statistical assessment of the possible peak outflow range. 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Systematic classification of the river blockages based on the landslide type, its material composition, and its travel distance is used to assess the erodibility of a dam. The blockage erodibility, along with the impoundment’s characteristics, controls the size (height and width) of a breach and the speed at which it forms, which determines the peak discharge. Three categories or types of landslide dams are identified to quantify their relative erodibility. A regression equation is developed to predict an outburst flood peak discharge based on the blockage type, the dam height, and the volume of impounded water at the time of breaching. Prediction limits are also calculated, which provide a sound statistical assessment of the possible peak outflow range. With the potential consequence known, the downstream population’s orderly evacuation can be carried out when a landslide dam failure is approaching.</description><subject>Dam failure</subject><subject>Dams</subject><subject>Discharge</subject><subject>Downstream effects</subject><subject>Flood discharge</subject><subject>Flood peak</subject><subject>Flood predictions</subject><subject>Floods</subject><subject>Forestry</subject><subject>Height</subject><subject>Landslides</subject><subject>Outflow</subject><subject>Peak floods</subject><subject>Statistical analysis</subject><subject>Technical Papers</subject><issn>1527-6988</issn><issn>1527-6996</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp1kMtOwzAQRS0EEqXwDxZsYJHid2J2VR8EqWqRgLU1jW1IaZtiJwv-nkQtZcVsZjS6Z0Y6CF1TMqBE0fvb4ctocjfPB1SyNFFaqwFpSwp5gnrH3elxzrJzdBHjihAqUiJ7iD07-MTTdVVZPC5j8QHh3WEfqg0GPIOtjevSOjyGDV409bIJsb5EZx7W0V0deh-9TSevozyZLR6fRsNZApyndUJTTpYZMCmId0vQErSVymtFmNVcWC0peC-5cMBAeAVO89Rb6iAtRCE576Ob_d1dqL4aF2uzqpqwbV8apmhGM5ZJ0aYe9qkiVDEG580ulBsI34YS0zkypnNk5rnpHJjOhzk4amG1hyEW7u_8L_k_-ANJtGl6</recordid><startdate>20220501</startdate><enddate>20220501</enddate><creator>Froehlich, David C</creator><general>American Society of Civil Engineers</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7T2</scope><scope>7TA</scope><scope>7TB</scope><scope>7TG</scope><scope>7TN</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>H96</scope><scope>JG9</scope><scope>JQ2</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><orcidid>https://orcid.org/0000-0001-9045-9517</orcidid></search><sort><creationdate>20220501</creationdate><title>Peak Flood Discharge from a Landslide Dam Outburst</title><author>Froehlich, David C</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a337t-1730b8a2540feba95a9d56f9602d934d951aff534ea2a4f6ae937fd1ea7c4c533</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Dam failure</topic><topic>Dams</topic><topic>Discharge</topic><topic>Downstream effects</topic><topic>Flood discharge</topic><topic>Flood peak</topic><topic>Flood predictions</topic><topic>Floods</topic><topic>Forestry</topic><topic>Height</topic><topic>Landslides</topic><topic>Outflow</topic><topic>Peak floods</topic><topic>Statistical analysis</topic><topic>Technical Papers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Froehlich, David C</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Health and Safety Science Abstracts (Full archive)</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - 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Systematic classification of the river blockages based on the landslide type, its material composition, and its travel distance is used to assess the erodibility of a dam. The blockage erodibility, along with the impoundment’s characteristics, controls the size (height and width) of a breach and the speed at which it forms, which determines the peak discharge. Three categories or types of landslide dams are identified to quantify their relative erodibility. A regression equation is developed to predict an outburst flood peak discharge based on the blockage type, the dam height, and the volume of impounded water at the time of breaching. Prediction limits are also calculated, which provide a sound statistical assessment of the possible peak outflow range. With the potential consequence known, the downstream population’s orderly evacuation can be carried out when a landslide dam failure is approaching.</abstract><cop>New York</cop><pub>American Society of Civil Engineers</pub><doi>10.1061/(ASCE)NH.1527-6996.0000545</doi><orcidid>https://orcid.org/0000-0001-9045-9517</orcidid></addata></record> |
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| identifier | ISSN: 1527-6988 |
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| language | eng |
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| source | American Society of Civil Engineers:NESLI2:Journals:2014 |
| subjects | Dam failure Dams Discharge Downstream effects Flood discharge Flood peak Flood predictions Floods Forestry Height Landslides Outflow Peak floods Statistical analysis Technical Papers |
| title | Peak Flood Discharge from a Landslide Dam Outburst |
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