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《Marine Geology Frontiers》 2018-10
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HISTORICAL EVOLUTION OF THE HIGH VELOCITY SYSTEM OF THE YELLOW RIVER ESTUARY IN THE PAST 50 YEARS

BAI Yuchuan;XIE Qi;XU Haijue;State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University;  
Historical observation data suggests that high velocity systems occurred outside the Yellow River estuary,and on a large time scale,these high velocity systems change with the alteration of the sea channels and the delta itself.This research aims to establish a mathematical model for the Yellow River estuary by using 3 different nautical charts.The tidal prediction software of"China Tide"is adopted to simulate the tide coming offshore.The calculation results show that:(1)since 1962,there have been some high velocity systems outside the estuary,for examples the systems located at the Tianshuigou and Shenxiangou;(2)in 1976,there were a number of small groups of high velocity systems along the coastline;(3)sine 1996,there have been 3 high velocity systems located at the Wanwangou,Shenxiangou and the Qing 8 channel respectively;(4)the change of high velocity system is closely related to the evolution of the coast,and the high velocity regions are always located at the place where protrude spits occur.
【Fund】: 国家自然科学基金面上项目“河口海岸异重沙流成因机制与输移动态预测”(41576093)
【CateGory Index】: P333
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