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Sedimentary and hydrological studies of the Holocene palaeofloods in the middle reaches of the Jinghe River 被引量:3
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作者 xiaochun zha Chunchang Huang +1 位作者 Jiangli Pang Yuqin Li 《Journal of Geographical Sciences》 SCIE CSCD 2012年第3期470-478,共9页
Palaeo-hydrological field investigation was carried out in the middle reaches of the Jinghe River. A set of palaeoflood slackwater deposit beds was identified in the Holocene loess-soil sequence in the riverbanks. The... Palaeo-hydrological field investigation was carried out in the middle reaches of the Jinghe River. A set of palaeoflood slackwater deposit beds was identified in the Holocene loess-soil sequence in the riverbanks. The sediment samples were collected from the profile, and the particle-size distribution, magnetic susceptibility, loss-on-ignition were analyzed in laboratory. The analytical results showed that the palaeoflood slackwater deposits have recorded extraordinary flood events in the Jinghe River valley. According to stratigraphic correlation and OSL dating, the palaeoflood events were dated to 4100-4000 a BP. The palaeoflood peak discharges were estimated to be 19,410-22,280 m^3/s by using the hydrological model and checked by different approaches. These results have the flood data sequence of the Jinghe River extended to 10,000-year time-scale. It provided significant data for hydraulic engineering and for mitigation of flood hazards in the Jinghe River drainage basin. 展开更多
关键词 Jinghe River PALAEOFLOOD Holoeene China
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