Reconstruction of mid-Holocene extreme flood events in the upper Minjiang River valley, eastern Tibetan Plateau, China | |
Guo, Yongqiang3; Ge, Yonggang3; Mao, Peini2; Liu, Tao1 | |
刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY |
2023-05-01 | |
卷号 | 617页码:16 |
关键词 | Palaeoflood hydrology Flood geomorphology Slackwater deposits Chronology Mountain canyons |
ISSN号 | 0031-0182 |
DOI | 10.1016/j.palaeo.2023.111517 |
英文摘要 | In this paper, we analyze the Holocene record of extreme flood events in the upper Minjiang River valley of the eastern Tibetan Plateau, China. Slackwater deposits (SWDs), the fine-grained sediments of palaeofloods, were identified within debris flow deposits at a tributary mouth and in channel expansions along the bedrock gorge. Eight palaeoflood SWDs were dated to between 6.0 & PLUSMN; 0.9 ka and 4.6 & PLUSMN; 0.9 ka using optically-stimulated luminescence analysis in combination with the minimum age model and represent at least two phases of palaeoflood events. The palaeoflood history in the upper Minjiang River Valley is consistent with the record of the mid-Holocene flood events in the mainstream of the Yangtze River. These mid-Holocene extreme flood events were closely related to strong ENSO activity and variability of the monsoon climate in the eastern Tibetan Plateau. In our study area, minimum palaeoflood discharges were estimated as 6500-7800 m3/s by the step-backwater method. These estimated discharges are less than the values inferred for the outburst flood that occurred in the upper Minjiang River Valley in 1933. Flood-inundation maps show that palaeoflood SWDs were deposited in low-velocity backwater zones. Our palaeoflood reconstructions are important for improving regional records of maximum flood and help to develop risk analysis for rare flood events. |
资助项目 | National Natural Science Foundation of China[41801012] ; National Natural Science Foundation of China[U19A2049] ; Youth Innovation Promotion Association CAS[2022378] ; CAS Youth Fund[SDS-QN-1913] ; Natural Science Foundation of Sichuan Province[22NSFSC1223] |
WOS关键词 | UPPER HANJIANG RIVER ; MIDDLE YELLOW-RIVER ; HYDRO-CLIMATIC EVENTS ; JIN-SHAAN GORGES ; PALEOFLOOD HYDROLOGY ; SLACKWATER DEPOSITS ; YANGTZE-RIVER ; EXTRAORDINARY FLOODS ; SEDIMENTARY RECORDS ; LATE PLEISTOCENE |
WOS研究方向 | Physical Geography ; Geology ; Paleontology |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:001027122400001 |
资助机构 | National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; CAS Youth Fund ; Natural Science Foundation of Sichuan Province |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/57558] |
专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
通讯作者 | Guo, Yongqiang; Ge, Yonggang |
作者单位 | 1.Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ 85721 USA 2.Sichuan Normal Univ, Sch Geog & Resources Sci, Chengdu 610101, Sichuan, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China |
推荐引用方式 GB/T 7714 | Guo, Yongqiang,Ge, Yonggang,Mao, Peini,et al. Reconstruction of mid-Holocene extreme flood events in the upper Minjiang River valley, eastern Tibetan Plateau, China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2023,617:16. |
APA | Guo, Yongqiang,Ge, Yonggang,Mao, Peini,&Liu, Tao.(2023).Reconstruction of mid-Holocene extreme flood events in the upper Minjiang River valley, eastern Tibetan Plateau, China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,617,16. |
MLA | Guo, Yongqiang,et al."Reconstruction of mid-Holocene extreme flood events in the upper Minjiang River valley, eastern Tibetan Plateau, China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 617(2023):16. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论