Journal article 564 views
Waves and Sediment Transport Due to Granular Landslides Impacting Reservoirs
Ji Li 
,
Zhixian Cao,
Qingquan Liu
,
Zhixian Cao,
Qingquan Liu
Water Resources Research, Volume: 55, Issue: 1, Pages: 495 - 518
Swansea University Author:
Ji Li
Full text not available from this repository: check for access using links below.
DOI (Published version): 10.1029/2018WR023191
Abstract
Granular landslides impacting reservoirs may generate large waves and cause active sediment transport, and an enhanced understanding of these processes is important for public safety and effective reservoir management. This study investigates the waves and sediment transport caused by landslides imp...
| Published in: | Water Resources Research |
|---|---|
| ISSN: | 0043-1397 1944-7973 |
| Published: |
2019
|
| Online Access: |
Check full text
|
| URI: | https://cronfa.swan.ac.uk/Record/cronfa51727 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| first_indexed |
2019-09-09T15:26:31Z |
|---|---|
| last_indexed |
2023-02-22T03:59:48Z |
| id |
cronfa51727 |
| recordtype |
SURis |
| fullrecord |
<?xml version="1.0"?><rfc1807><datestamp>2023-02-21T16:45:00.1885532</datestamp><bib-version>v2</bib-version><id>51727</id><entry>2019-09-09</entry><title>Waves and Sediment Transport Due to Granular Landslides Impacting Reservoirs</title><swanseaauthors><author><sid>4123c4ddbcd6e77f580974c661461c7c</sid><ORCID>0000-0003-4328-3197</ORCID><firstname>Ji</firstname><surname>Li</surname><name>Ji Li</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2019-09-09</date><deptcode>CIVL</deptcode><abstract>Granular landslides impacting reservoirs may generate large waves and cause active sediment transport, and an enhanced understanding of these processes is important for public safety and effective reservoir management. This study investigates the waves and sediment transport caused by landslides impacting reservoirs using a two‐dimensional coupled double‐layer‐averaged shallow water hydro‐sediment‐morphodynamic model. In contrast to existing models, which cannot fully account for sediment transport, the model makes a physical step forward. The model is benchmarked against laboratory experiments of landslide‐generated waves in both two and three dimensions. Based on extended numerical cases, the capability of the model is further demonstrated by comparisons with empirical relationships of waves in 2D. In addition, sediment transport is resolved in terms of the sediment concentration and bed deformation. The results show that the wave types and amplitudes in 2D are dictated by the sediment transport speed, which also governs the landslide‐to‐wave momentum transfer and the landslide efficiency, which is defined as the ratio of the horizontal runout distance to the vertical fall height. With increasing sediment transport speed, landslide‐generated waves in 2D vary gradually from smaller nonlinear oscillatory waves to larger waves with solitary‐like wave characteristics, including nonlinear transition waves, solitary waves, and dissipative transient bores. In contrast to the momentum transfer ratio, the landslide efficiency increases with the sediment transport speed and decreases with the reservoir water depth and the lateral spreading in 3D cases.</abstract><type>Journal Article</type><journal>Water Resources Research</journal><volume>55</volume><journalNumber>1</journalNumber><paginationStart>495</paginationStart><paginationEnd>518</paginationEnd><publisher/><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>0043-1397</issnPrint><issnElectronic>1944-7973</issnElectronic><keywords>landslide; reservoir; sediment transport; waves; landslide efficiency; momentum transfer</keywords><publishedDay>21</publishedDay><publishedMonth>2</publishedMonth><publishedYear>2019</publishedYear><publishedDate>2019-02-21</publishedDate><doi>10.1029/2018WR023191</doi><url/><notes/><college>COLLEGE NANME</college><department>Civil Engineering</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>CIVL</DepartmentCode><institution>Swansea University</institution><apcterm/><funders/><projectreference/><lastEdited>2023-02-21T16:45:00.1885532</lastEdited><Created>2019-09-09T04:56:21.9236960</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering</level></path><authors><author><firstname>Ji</firstname><surname>Li</surname><orcid>0000-0003-4328-3197</orcid><order>1</order></author><author><firstname>Zhixian</firstname><surname>Cao</surname><order>2</order></author><author><firstname>Qingquan</firstname><surname>Liu</surname><order>3</order></author></authors><documents/><OutputDurs/></rfc1807> |
| spelling |
2023-02-21T16:45:00.1885532 v2 51727 2019-09-09 Waves and Sediment Transport Due to Granular Landslides Impacting Reservoirs 4123c4ddbcd6e77f580974c661461c7c 0000-0003-4328-3197 Ji Li Ji Li true false 2019-09-09 CIVL Granular landslides impacting reservoirs may generate large waves and cause active sediment transport, and an enhanced understanding of these processes is important for public safety and effective reservoir management. This study investigates the waves and sediment transport caused by landslides impacting reservoirs using a two‐dimensional coupled double‐layer‐averaged shallow water hydro‐sediment‐morphodynamic model. In contrast to existing models, which cannot fully account for sediment transport, the model makes a physical step forward. The model is benchmarked against laboratory experiments of landslide‐generated waves in both two and three dimensions. Based on extended numerical cases, the capability of the model is further demonstrated by comparisons with empirical relationships of waves in 2D. In addition, sediment transport is resolved in terms of the sediment concentration and bed deformation. The results show that the wave types and amplitudes in 2D are dictated by the sediment transport speed, which also governs the landslide‐to‐wave momentum transfer and the landslide efficiency, which is defined as the ratio of the horizontal runout distance to the vertical fall height. With increasing sediment transport speed, landslide‐generated waves in 2D vary gradually from smaller nonlinear oscillatory waves to larger waves with solitary‐like wave characteristics, including nonlinear transition waves, solitary waves, and dissipative transient bores. In contrast to the momentum transfer ratio, the landslide efficiency increases with the sediment transport speed and decreases with the reservoir water depth and the lateral spreading in 3D cases. Journal Article Water Resources Research 55 1 495 518 0043-1397 1944-7973 landslide; reservoir; sediment transport; waves; landslide efficiency; momentum transfer 21 2 2019 2019-02-21 10.1029/2018WR023191 COLLEGE NANME Civil Engineering COLLEGE CODE CIVL Swansea University 2023-02-21T16:45:00.1885532 2019-09-09T04:56:21.9236960 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering Ji Li 0000-0003-4328-3197 1 Zhixian Cao 2 Qingquan Liu 3 |
| title |
Waves and Sediment Transport Due to Granular Landslides Impacting Reservoirs |
| spellingShingle |
Waves and Sediment Transport Due to Granular Landslides Impacting Reservoirs Ji Li |
| title_short |
Waves and Sediment Transport Due to Granular Landslides Impacting Reservoirs |
| title_full |
Waves and Sediment Transport Due to Granular Landslides Impacting Reservoirs |
| title_fullStr |
Waves and Sediment Transport Due to Granular Landslides Impacting Reservoirs |
| title_full_unstemmed |
Waves and Sediment Transport Due to Granular Landslides Impacting Reservoirs |
| title_sort |
Waves and Sediment Transport Due to Granular Landslides Impacting Reservoirs |
| author_id_str_mv |
4123c4ddbcd6e77f580974c661461c7c |
| author_id_fullname_str_mv |
4123c4ddbcd6e77f580974c661461c7c_***_Ji Li |
| author |
Ji Li |
| author2 |
Ji Li Zhixian Cao Qingquan Liu |
| format |
Journal article |
| container_title |
Water Resources Research |
| container_volume |
55 |
| container_issue |
1 |
| container_start_page |
495 |
| publishDate |
2019 |
| institution |
Swansea University |
| issn |
0043-1397 1944-7973 |
| doi_str_mv |
10.1029/2018WR023191 |
| college_str |
Faculty of Science and Engineering |
| hierarchytype |
|
| hierarchy_top_id |
facultyofscienceandengineering |
| hierarchy_top_title |
Faculty of Science and Engineering |
| hierarchy_parent_id |
facultyofscienceandengineering |
| hierarchy_parent_title |
Faculty of Science and Engineering |
| department_str |
School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering |
| document_store_str |
0 |
| active_str |
0 |
| description |
Granular landslides impacting reservoirs may generate large waves and cause active sediment transport, and an enhanced understanding of these processes is important for public safety and effective reservoir management. This study investigates the waves and sediment transport caused by landslides impacting reservoirs using a two‐dimensional coupled double‐layer‐averaged shallow water hydro‐sediment‐morphodynamic model. In contrast to existing models, which cannot fully account for sediment transport, the model makes a physical step forward. The model is benchmarked against laboratory experiments of landslide‐generated waves in both two and three dimensions. Based on extended numerical cases, the capability of the model is further demonstrated by comparisons with empirical relationships of waves in 2D. In addition, sediment transport is resolved in terms of the sediment concentration and bed deformation. The results show that the wave types and amplitudes in 2D are dictated by the sediment transport speed, which also governs the landslide‐to‐wave momentum transfer and the landslide efficiency, which is defined as the ratio of the horizontal runout distance to the vertical fall height. With increasing sediment transport speed, landslide‐generated waves in 2D vary gradually from smaller nonlinear oscillatory waves to larger waves with solitary‐like wave characteristics, including nonlinear transition waves, solitary waves, and dissipative transient bores. In contrast to the momentum transfer ratio, the landslide efficiency increases with the sediment transport speed and decreases with the reservoir water depth and the lateral spreading in 3D cases. |
| published_date |
2019-02-21T04:03:44Z |
| _version_ |
1763753301864611840 |
| score |
11.013776 |