Physics and Modeling of Various Hazardous Landslides
In 2014, the Varnes classification system for landslides was updated. Complex landslides can still be a problem to classify as the classification does not include the flow type in the hydrodynamical sense. Three examples of Icelandic landslides are presented and later used as case studies in order t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/11/3/108 |
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| author | Jόnas Elíasson Þorsteinn Sæmundsson |
| author_facet | Jόnas Elíasson Þorsteinn Sæmundsson |
| author_sort | Jόnas Elíasson |
| collection | DOAJ |
| description | In 2014, the Varnes classification system for landslides was updated. Complex landslides can still be a problem to classify as the classification does not include the flow type in the hydrodynamical sense. Three examples of Icelandic landslides are presented and later used as case studies in order to demonstrate the methods suggested to analyze the flow. The methods are based on the different physical properties of the flow types of the slides. Three different flow types are presented, named type (i), (ii), and (iii). Types (i) and (ii) do not include turbulent flows and their flow paths are sometimes independent of the velocity. Type (iii) include high velocity flows; they are treated with the translator wave theory, where a new type of a slope factor is used. It allows the slide to stop when the slope has flattened out to the value that corresponds to the stable slope property of the flowing material. The type studies are for a fast slide of this type, also a large slip circle slide that turns into a fast-flowing slide farther down the path and finally a large slide running so fast that it can run for a kilometer on flat land where it stops with a steep front. |
| first_indexed | 2024-03-09T06:09:42Z |
| format | Article |
| id | doaj.art-c11b122170bb4e96beb649591a491f3b |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-09T06:09:42Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-c11b122170bb4e96beb649591a491f3b2023-12-03T12:00:36ZengMDPI AGGeosciences2076-32632021-03-0111310810.3390/geosciences11030108Physics and Modeling of Various Hazardous LandslidesJόnas Elíasson0Þorsteinn Sæmundsson1Faculty of Engineering and Natural Sciences, University of Iceland, 102 Reykjavík, IcelandFaculty of Engineering and Natural Sciences, University of Iceland, 102 Reykjavík, IcelandIn 2014, the Varnes classification system for landslides was updated. Complex landslides can still be a problem to classify as the classification does not include the flow type in the hydrodynamical sense. Three examples of Icelandic landslides are presented and later used as case studies in order to demonstrate the methods suggested to analyze the flow. The methods are based on the different physical properties of the flow types of the slides. Three different flow types are presented, named type (i), (ii), and (iii). Types (i) and (ii) do not include turbulent flows and their flow paths are sometimes independent of the velocity. Type (iii) include high velocity flows; they are treated with the translator wave theory, where a new type of a slope factor is used. It allows the slide to stop when the slope has flattened out to the value that corresponds to the stable slope property of the flowing material. The type studies are for a fast slide of this type, also a large slip circle slide that turns into a fast-flowing slide farther down the path and finally a large slide running so fast that it can run for a kilometer on flat land where it stops with a steep front.https://www.mdpi.com/2076-3263/11/3/108landslideslandslide classificationsoil propertiesflow typetranslatory waveslope factor |
| spellingShingle | Jόnas Elíasson Þorsteinn Sæmundsson Physics and Modeling of Various Hazardous Landslides Geosciences landslides landslide classification soil properties flow type translatory wave slope factor |
| title | Physics and Modeling of Various Hazardous Landslides |
| title_full | Physics and Modeling of Various Hazardous Landslides |
| title_fullStr | Physics and Modeling of Various Hazardous Landslides |
| title_full_unstemmed | Physics and Modeling of Various Hazardous Landslides |
| title_short | Physics and Modeling of Various Hazardous Landslides |
| title_sort | physics and modeling of various hazardous landslides |
| topic | landslides landslide classification soil properties flow type translatory wave slope factor |
| url | https://www.mdpi.com/2076-3263/11/3/108 |
| work_keys_str_mv | AT jonaseliasson physicsandmodelingofvarioushazardouslandslides AT þorsteinnsæmundsson physicsandmodelingofvarioushazardouslandslides |