Impact of water regulation of the Yellow River on the hydrological characteristics of the estuary and sedimentary effects in 2020

FAN Yongyong; WU Wenjuan; BI Naishuang; XU Congliang; SUN Zhongqiang

doi:10.16028/j.1009-2722.2022.154

2023 Vol. 39, No. 10

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Article navigation > Marine Geology Frontiers > 2023 > 39(10): 43-51

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FAN Yongyong, WU Wenjuan, BI Naishuang, XU Congliang, SUN Zhongqiang. Impact of water regulation of the Yellow River on the hydrological characteristics of the estuary and sedimentary effects in 2020[J]. Marine Geology Frontiers, 2023, 39(10): 43-51. doi: 10.16028/j.1009-2722.2022.154

Citation:

FAN Yongyong, WU Wenjuan, BI Naishuang, XU Congliang, SUN Zhongqiang. Impact of water regulation of the Yellow River on the hydrological characteristics of the estuary and sedimentary effects in 2020[J]. Marine Geology Frontiers, 2023, 39(10): 43-51. doi: 10.16028/j.1009-2722.2022.154

Impact of water regulation of the Yellow River on the hydrological characteristics of the estuary and sedimentary effects in 2020

1.
Institute of the Yellow River Estuary and Coast Science, Dongying, 257091, China
2.
College of Marine Geosciences, Ocean University of China, Key Laboratory of Submarine Geosciences and Prospecting Technique, Ministry of Education, Qingdao 266100, China
3.
Key Lab of Submarine Geosciences and Prospecting Techniques, Ocean University of China, Qingdao 266100, China
4.
Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering (MEGE), Ocean University of China, Qingdao 266100, China

Received Date: 13 May 2022

Publish Date: 28 October 2023

Abstract

Abstract

Due to the influence of water conservancy projects, the water and sediment regulation of the Yellow River is usually carried out in a relatively short period of time, and a large amount of sediment and fresh water are transported to the adjacent areas off the Yellow River Estuary, which resulted in the most dramatic changes in hydrological characteristics and geomorphology. Based on a large number of measured data in 2020, the temporal and spatial distribution of temperature and salinity, and the evolution of submarine topography were analyzed in detail, and the influence of water and sediment of the Yellow River on salinity distribution and underwater topography were discussed. Results show that the water regulation of the Yellow River has greatly changed the salinity distribution. The salinity is higher in low flow period, and the distribution range of low salinity area is limited. During the period of high discharge, the salinity decreased significantly, and the water range in the low salinity area expanded significantly, which satisfied the flow demand of the estuary environment. The submerged delta has undergone significant deposition. The accretion trend occurred in the active submerged delta in 2019-2021, while the erosion appeared in the old Qingshuigou submerged delta, the Gudong littoral zone, and deeper offshore area. Runoff and sediment load have been playing dominant roles in accretion and erosion characteristics of the adjacent areas off the estuary.
- Yellow River Estuary /
- hydrological characteristics /
- erosion and deposition pattern /
- water regulation

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References

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