Article: Sensitivity of hydrogeomorphological hazards in the Qinling Mountains, China

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TitleSensitivity of hydrogeomorphological hazards in the Qinling Mountains, China
AuthorsHe, H2 3 4
Zhou, J4
Peart, MR1
Chen, J1
Zhang, Q3
Issue Date2012
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/quaint
CitationQuaternary International, 2012, v. 282, p. 37-47 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.quaint.2012.06.002
AbstractInvestigations into hydrogeomorphological hazards in the Qinling Mountains were conducted by consideration of orographic characteristics and climatic fluctuations. Climatic-orographic-hydrologic processes in the Qinling Mountains were assessed through model simulation from proposed hydrodynamic gradient model and hydrological hazard index model combined with MM5 model (PSU/NCAR, 2005) and HEC-HMS/RAS () model. Results show that climate change is key contributor to flood extreme events, and the Qinling Mountains has increased risk of rainstorm-flood extreme events. The hydrogeomorphological gradient has strong north-south gradient distribution due to orographic effects of the Qinling Mountains. Climate change impacts on hydrogeomorphological processes are dominated by short and severe rainstorms. High-frequency heavy rain regions are located in steep topographic gradients, such as the north-south valleys and windward slopes of higher elevations in the Qinling Mountains. The hydrogeomorphological consequences intensify the occurrence of localized extreme flash floods and accelerated erosion, altering flooding routing in the upper Hanjiang River basin. Flood routing is likely to be controlled by topographic rainfall for shorter periods (5-year and 10-year), and by climate change for longer periods (50-year and 100-year). Rainstorms and sediment gravity accumulation are the main causes of hazards. © 2012 Elsevier Ltd and INQUA.
ISSN1040-6182
2011 Impact Factor: 1.874
2011 SCImago Journal Rankings: 0.091
DOIhttp://dx.doi.org/10.1016/j.quaint.2012.06.002
DC Field
Value
dc.contributor.authorHe, H
dc.contributor.authorZhou, J
dc.contributor.authorPeart, MR
dc.contributor.authorChen, J
dc.contributor.authorZhang, Q
dc.date.accessioned2012-08-08T08:56:27Z
dc.date.available2012-08-08T08:56:27Z
dc.date.issued2012
dc.description.abstractInvestigations into hydrogeomorphological hazards in the Qinling Mountains were conducted by consideration of orographic characteristics and climatic fluctuations. Climatic-orographic-hydrologic processes in the Qinling Mountains were assessed through model simulation from proposed hydrodynamic gradient model and hydrological hazard index model combined with MM5 model (PSU/NCAR, 2005) and HEC-HMS/RAS () model. Results show that climate change is key contributor to flood extreme events, and the Qinling Mountains has increased risk of rainstorm-flood extreme events. The hydrogeomorphological gradient has strong north-south gradient distribution due to orographic effects of the Qinling Mountains. Climate change impacts on hydrogeomorphological processes are dominated by short and severe rainstorms. High-frequency heavy rain regions are located in steep topographic gradients, such as the north-south valleys and windward slopes of higher elevations in the Qinling Mountains. The hydrogeomorphological consequences intensify the occurrence of localized extreme flash floods and accelerated erosion, altering flooding routing in the upper Hanjiang River basin. Flood routing is likely to be controlled by topographic rainfall for shorter periods (5-year and 10-year), and by climate change for longer periods (50-year and 100-year). Rainstorms and sediment gravity accumulation are the main causes of hazards. © 2012 Elsevier Ltd and INQUA.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationQuaternary International, 2012, v. 282, p. 37-47 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.quaint.2012.06.002
dc.identifier.citeulike10782432
dc.identifier.doihttp://dx.doi.org/10.1016/j.quaint.2012.06.002
dc.identifier.epage47
dc.identifier.hkuros208009
dc.identifier.issn1040-6182
2011 Impact Factor: 1.874
2011 SCImago Journal Rankings: 0.091
dc.identifier.scopuseid_2-s2.0-84869498272
dc.identifier.spage37
dc.identifier.urihttp://hdl.handle.net/10722/157945
dc.identifier.volume282
dc.languageeng
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/quaint
dc.publisher.placeUnited Kingdom
dc.relation.ispartofQuaternary International
dc.titleSensitivity of hydrogeomorphological hazards in the Qinling Mountains, China
dc.typeArticle
Author Affiliations
  1. The University of Hong Kong
  2. Institute of Soil and Water Conservation Chinese Academy of Sciences
  3. Chinese Academy of Sciences
  4. Chinese Academy of Sciences and Ministry of Water Resources