Spatial features of debris flows and their rainfall thresholds in the Wenchuan earthquake-affected area
The 2008 Wenchuan earthquake greatly altered the thresholds for rainfall-triggered debris flows within the affected area. Debris flows were widely and densely distributed, and they exhibited a range of differing local rainfall thresholds. This study looked at 518 debris flow events that occurred pos...
Gespeichert in:
| Veröffentlicht in: | Landslides 2016-10, Vol.13 (5), p.1215-1229 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 1229 |
|---|---|
| container_issue | 5 |
| container_start_page | 1215 |
| container_title | Landslides |
| container_volume | 13 |
| creator | Guo, Xiaojun Cui, Peng Li, Yong Zhang, Jianqiang Ma, Li Mahoney, William B. |
| description | The 2008 Wenchuan earthquake greatly altered the thresholds for rainfall-triggered debris flows within the affected area. Debris flows were widely and densely distributed, and they exhibited a range of differing local rainfall thresholds. This study looked at 518 debris flow events that occurred post-earthquake in order to analyze their spatial characteristics. The duration
D
(in h) and the average rainfall intensity
I
(in mm/h) that triggered the debris flows were determined for 252 of these events in order to analyze the spatial features of rainfall thresholds. Results show that 49 % of debris flows occurred in the highest-intensity seismic zone, 58 % occurred within 10 km of active faults, and 49 % occurred in areas with humid climate. Rainfall thresholds in these three regions were persistently lower than others. Moreover, debris flows were most frequent in watersheds smaller than 5 km
2
, and rainfall thresholds tended to decrease with a decrease in watershed size. Given the abundant loose materials available throughout the study area, 11 extreme debris flow-prone sub-regions were selected to illustrate the spatial features of rainfall thresholds in relation to local climate conditions. The lowest and highest
I
–
D
thresholds in the sub-regions examined were
I
= 5.94
D
−0.70
(2 |
| doi_str_mv | 10.1007/s10346-015-0608-z |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1845790356</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1845790356</sourcerecordid><originalsourceid>FETCH-LOGICAL-a405t-9b3dc0d55bcad1d9e846db5a7f7a63e898710d8c8cfaa22042ef788cafb433793</originalsourceid><addsrcrecordid>eNqNkU9LxDAQxYsoqKsfwFvAi5dq0jRNepTFf7DgQUVvYZpMdqvddjdpEffTm7IiIgieZob5vQePlyQnjJ4zSuVFYJTnRUqZSGlBVbrZSQ5YwbJUMKZ2v3f6sp8chvBKaVZSXh4k84cV9DU0xCH0g8dAOkcsVr4OxDXdeyDQWtIvsPbEQ906aJp4RnDRNTaQuh2f5BlbsxigJQi-X6wHeMMUnEPToyXgEY6SvSgNePw1J8nT9dXj9Dad3d_cTS9nKeRU9GlZcWuoFaIyYJktUeWFrQRIJ6HgqEolGbXKKOMAsozmGTqplAFX5ZzLkk-Ss63vynfrAUOvl3Uw2DTQYjcEzVQuZIwuin-gmSyZFMXoevoLfe0G38YgI8V5IUqWRYptKeO7EDw6vfL1EvyHZlSPLeltSzq2pMeW9CZqsq0mRLado__h_KfoE24Mliw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1823365912</pqid></control><display><type>article</type><title>Spatial features of debris flows and their rainfall thresholds in the Wenchuan earthquake-affected area</title><source>SpringerLink Journals</source><creator>Guo, Xiaojun ; Cui, Peng ; Li, Yong ; Zhang, Jianqiang ; Ma, Li ; Mahoney, William B.</creator><creatorcontrib>Guo, Xiaojun ; Cui, Peng ; Li, Yong ; Zhang, Jianqiang ; Ma, Li ; Mahoney, William B.</creatorcontrib><description><![CDATA[The 2008 Wenchuan earthquake greatly altered the thresholds for rainfall-triggered debris flows within the affected area. Debris flows were widely and densely distributed, and they exhibited a range of differing local rainfall thresholds. This study looked at 518 debris flow events that occurred post-earthquake in order to analyze their spatial characteristics. The duration
D
(in h) and the average rainfall intensity
I
(in mm/h) that triggered the debris flows were determined for 252 of these events in order to analyze the spatial features of rainfall thresholds. Results show that 49 % of debris flows occurred in the highest-intensity seismic zone, 58 % occurred within 10 km of active faults, and 49 % occurred in areas with humid climate. Rainfall thresholds in these three regions were persistently lower than others. Moreover, debris flows were most frequent in watersheds smaller than 5 km
2
, and rainfall thresholds tended to decrease with a decrease in watershed size. Given the abundant loose materials available throughout the study area, 11 extreme debris flow-prone sub-regions were selected to illustrate the spatial features of rainfall thresholds in relation to local climate conditions. The lowest and highest
I
–
D
thresholds in the sub-regions examined were
I
= 5.94
D
−0.70
(2 <
D
< 53) and
I
= 21.4
D
−0.58
(3 <
D
< 50), respectively. The lowest and mean rainfall intensities needed to trigger debris flows were power-related with the local maximum 1- and 24-h rainfall. By normalizing the rainfall intensity (
I
) by mean annual precipitation (MAP), the
I
MAP
–
D
thresholds were determined. Normalized results showed that the lowest and highest
I
MAP
–
D
thresholds were
I
MAP
= 0.0034
D
−0.55
(2 <
D
< 53) and
I
MAP
= 0.0090
D
−0.40
(3 <
D
< 51), respectively. Such results are useful for debris flow forecasting based on empirical rainfall thresholds and have implications for hazard and risk assessment in this region.]]></description><identifier>ISSN: 1612-510X</identifier><identifier>EISSN: 1612-5118</identifier><identifier>DOI: 10.1007/s10346-015-0608-z</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Agriculture ; Civil Engineering ; Climate ; Climatic conditions ; Debris ; Debris flow ; Detritus ; Earth and Environmental Science ; Earth Sciences ; Earthquakes ; Geography ; Hazard assessment ; Humid areas ; Humid climates ; Landslides & mudslides ; Natural Hazards ; Original Paper ; Rain ; Rainfall ; Rainfall intensity ; Risk assessment ; Seismic activity ; Seismic zones ; Studies ; Thresholds ; Watersheds</subject><ispartof>Landslides, 2016-10, Vol.13 (5), p.1215-1229</ispartof><rights>Springer-Verlag Berlin Heidelberg 2015</rights><rights>Springer-Verlag Berlin Heidelberg 2016</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a405t-9b3dc0d55bcad1d9e846db5a7f7a63e898710d8c8cfaa22042ef788cafb433793</citedby><cites>FETCH-LOGICAL-a405t-9b3dc0d55bcad1d9e846db5a7f7a63e898710d8c8cfaa22042ef788cafb433793</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10346-015-0608-z$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10346-015-0608-z$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Guo, Xiaojun</creatorcontrib><creatorcontrib>Cui, Peng</creatorcontrib><creatorcontrib>Li, Yong</creatorcontrib><creatorcontrib>Zhang, Jianqiang</creatorcontrib><creatorcontrib>Ma, Li</creatorcontrib><creatorcontrib>Mahoney, William B.</creatorcontrib><title>Spatial features of debris flows and their rainfall thresholds in the Wenchuan earthquake-affected area</title><title>Landslides</title><addtitle>Landslides</addtitle><description><![CDATA[The 2008 Wenchuan earthquake greatly altered the thresholds for rainfall-triggered debris flows within the affected area. Debris flows were widely and densely distributed, and they exhibited a range of differing local rainfall thresholds. This study looked at 518 debris flow events that occurred post-earthquake in order to analyze their spatial characteristics. The duration
D
(in h) and the average rainfall intensity
I
(in mm/h) that triggered the debris flows were determined for 252 of these events in order to analyze the spatial features of rainfall thresholds. Results show that 49 % of debris flows occurred in the highest-intensity seismic zone, 58 % occurred within 10 km of active faults, and 49 % occurred in areas with humid climate. Rainfall thresholds in these three regions were persistently lower than others. Moreover, debris flows were most frequent in watersheds smaller than 5 km
2
, and rainfall thresholds tended to decrease with a decrease in watershed size. Given the abundant loose materials available throughout the study area, 11 extreme debris flow-prone sub-regions were selected to illustrate the spatial features of rainfall thresholds in relation to local climate conditions. The lowest and highest
I
–
D
thresholds in the sub-regions examined were
I
= 5.94
D
−0.70
(2 <
D
< 53) and
I
= 21.4
D
−0.58
(3 <
D
< 50), respectively. The lowest and mean rainfall intensities needed to trigger debris flows were power-related with the local maximum 1- and 24-h rainfall. By normalizing the rainfall intensity (
I
) by mean annual precipitation (MAP), the
I
MAP
–
D
thresholds were determined. Normalized results showed that the lowest and highest
I
MAP
–
D
thresholds were
I
MAP
= 0.0034
D
−0.55
(2 <
D
< 53) and
I
MAP
= 0.0090
D
−0.40
(3 <
D
< 51), respectively. Such results are useful for debris flow forecasting based on empirical rainfall thresholds and have implications for hazard and risk assessment in this region.]]></description><subject>Agriculture</subject><subject>Civil Engineering</subject><subject>Climate</subject><subject>Climatic conditions</subject><subject>Debris</subject><subject>Debris flow</subject><subject>Detritus</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Earthquakes</subject><subject>Geography</subject><subject>Hazard assessment</subject><subject>Humid areas</subject><subject>Humid climates</subject><subject>Landslides & mudslides</subject><subject>Natural Hazards</subject><subject>Original Paper</subject><subject>Rain</subject><subject>Rainfall</subject><subject>Rainfall intensity</subject><subject>Risk assessment</subject><subject>Seismic activity</subject><subject>Seismic zones</subject><subject>Studies</subject><subject>Thresholds</subject><subject>Watersheds</subject><issn>1612-510X</issn><issn>1612-5118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNqNkU9LxDAQxYsoqKsfwFvAi5dq0jRNepTFf7DgQUVvYZpMdqvddjdpEffTm7IiIgieZob5vQePlyQnjJ4zSuVFYJTnRUqZSGlBVbrZSQ5YwbJUMKZ2v3f6sp8chvBKaVZSXh4k84cV9DU0xCH0g8dAOkcsVr4OxDXdeyDQWtIvsPbEQ906aJp4RnDRNTaQuh2f5BlbsxigJQi-X6wHeMMUnEPToyXgEY6SvSgNePw1J8nT9dXj9Dad3d_cTS9nKeRU9GlZcWuoFaIyYJktUeWFrQRIJ6HgqEolGbXKKOMAsozmGTqplAFX5ZzLkk-Ss63vynfrAUOvl3Uw2DTQYjcEzVQuZIwuin-gmSyZFMXoevoLfe0G38YgI8V5IUqWRYptKeO7EDw6vfL1EvyHZlSPLeltSzq2pMeW9CZqsq0mRLado__h_KfoE24Mliw</recordid><startdate>20161001</startdate><enddate>20161001</enddate><creator>Guo, Xiaojun</creator><creator>Cui, Peng</creator><creator>Li, Yong</creator><creator>Zhang, Jianqiang</creator><creator>Ma, Li</creator><creator>Mahoney, William B.</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L6V</scope><scope>M2P</scope><scope>M7S</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>Q9U</scope></search><sort><creationdate>20161001</creationdate><title>Spatial features of debris flows and their rainfall thresholds in the Wenchuan earthquake-affected area</title><author>Guo, Xiaojun ; Cui, Peng ; Li, Yong ; Zhang, Jianqiang ; Ma, Li ; Mahoney, William B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a405t-9b3dc0d55bcad1d9e846db5a7f7a63e898710d8c8cfaa22042ef788cafb433793</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Agriculture</topic><topic>Civil Engineering</topic><topic>Climate</topic><topic>Climatic conditions</topic><topic>Debris</topic><topic>Debris flow</topic><topic>Detritus</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Earthquakes</topic><topic>Geography</topic><topic>Hazard assessment</topic><topic>Humid areas</topic><topic>Humid climates</topic><topic>Landslides & mudslides</topic><topic>Natural Hazards</topic><topic>Original Paper</topic><topic>Rain</topic><topic>Rainfall</topic><topic>Rainfall intensity</topic><topic>Risk assessment</topic><topic>Seismic activity</topic><topic>Seismic zones</topic><topic>Studies</topic><topic>Thresholds</topic><topic>Watersheds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Guo, Xiaojun</creatorcontrib><creatorcontrib>Cui, Peng</creatorcontrib><creatorcontrib>Li, Yong</creatorcontrib><creatorcontrib>Zhang, Jianqiang</creatorcontrib><creatorcontrib>Ma, Li</creatorcontrib><creatorcontrib>Mahoney, William B.</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Environmental Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><jtitle>Landslides</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Guo, Xiaojun</au><au>Cui, Peng</au><au>Li, Yong</au><au>Zhang, Jianqiang</au><au>Ma, Li</au><au>Mahoney, William B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spatial features of debris flows and their rainfall thresholds in the Wenchuan earthquake-affected area</atitle><jtitle>Landslides</jtitle><stitle>Landslides</stitle><date>2016-10-01</date><risdate>2016</risdate><volume>13</volume><issue>5</issue><spage>1215</spage><epage>1229</epage><pages>1215-1229</pages><issn>1612-510X</issn><eissn>1612-5118</eissn><abstract><![CDATA[The 2008 Wenchuan earthquake greatly altered the thresholds for rainfall-triggered debris flows within the affected area. Debris flows were widely and densely distributed, and they exhibited a range of differing local rainfall thresholds. This study looked at 518 debris flow events that occurred post-earthquake in order to analyze their spatial characteristics. The duration
D
(in h) and the average rainfall intensity
I
(in mm/h) that triggered the debris flows were determined for 252 of these events in order to analyze the spatial features of rainfall thresholds. Results show that 49 % of debris flows occurred in the highest-intensity seismic zone, 58 % occurred within 10 km of active faults, and 49 % occurred in areas with humid climate. Rainfall thresholds in these three regions were persistently lower than others. Moreover, debris flows were most frequent in watersheds smaller than 5 km
2
, and rainfall thresholds tended to decrease with a decrease in watershed size. Given the abundant loose materials available throughout the study area, 11 extreme debris flow-prone sub-regions were selected to illustrate the spatial features of rainfall thresholds in relation to local climate conditions. The lowest and highest
I
–
D
thresholds in the sub-regions examined were
I
= 5.94
D
−0.70
(2 <
D
< 53) and
I
= 21.4
D
−0.58
(3 <
D
< 50), respectively. The lowest and mean rainfall intensities needed to trigger debris flows were power-related with the local maximum 1- and 24-h rainfall. By normalizing the rainfall intensity (
I
) by mean annual precipitation (MAP), the
I
MAP
–
D
thresholds were determined. Normalized results showed that the lowest and highest
I
MAP
–
D
thresholds were
I
MAP
= 0.0034
D
−0.55
(2 <
D
< 53) and
I
MAP
= 0.0090
D
−0.40
(3 <
D
< 51), respectively. Such results are useful for debris flow forecasting based on empirical rainfall thresholds and have implications for hazard and risk assessment in this region.]]></abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s10346-015-0608-z</doi><tpages>15</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1612-510X |
| ispartof | Landslides, 2016-10, Vol.13 (5), p.1215-1229 |
| issn | 1612-510X 1612-5118 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1845790356 |
| source | SpringerLink Journals |
| subjects | Agriculture Civil Engineering Climate Climatic conditions Debris Debris flow Detritus Earth and Environmental Science Earth Sciences Earthquakes Geography Hazard assessment Humid areas Humid climates Landslides & mudslides Natural Hazards Original Paper Rain Rainfall Rainfall intensity Risk assessment Seismic activity Seismic zones Studies Thresholds Watersheds |
| title | Spatial features of debris flows and their rainfall thresholds in the Wenchuan earthquake-affected area |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-27T09%3A31%3A03IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Spatial%20features%20of%20debris%20flows%20and%20their%20rainfall%20thresholds%20in%20the%20Wenchuan%20earthquake-affected%20area&rft.jtitle=Landslides&rft.au=Guo,%20Xiaojun&rft.date=2016-10-01&rft.volume=13&rft.issue=5&rft.spage=1215&rft.epage=1229&rft.pages=1215-1229&rft.issn=1612-510X&rft.eissn=1612-5118&rft_id=info:doi/10.1007/s10346-015-0608-z&rft_dat=%3Cproquest_cross%3E1845790356%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1823365912&rft_id=info:pmid/&rfr_iscdi=true |