scholarly journals Effect of tidal flooding on ecosystem CO2 and CH4 fluxes in a salt marsh in the Yellow River Delta

2020 ◽  
Vol 232 ◽  
pp. 106512 ◽  
Author(s):  
Siyu Wei ◽  
Guangxuan Han ◽  
Xiaojing Chu ◽  
Weimin Song ◽  
Wenjun He ◽  
...  
Keyword(s):  
Salt Marsh ◽  
Yellow River ◽  
Yellow River Delta ◽  
River Delta ◽  
The Yellow River ◽  
The Yellow River Delta ◽  
Tidal Flooding

Effects of Water Level and Salinity on Total Sulfur Contents in Salt Marsh Soils of the Yellow River Delta, China

Wetlands ◽  
2015 ◽  
Vol 36 (S1) ◽  
pp. 137-143 ◽  
Author(s):  
Qiongqiong Lu ◽  
Junhong Bai ◽  
Zhaoqin Gao ◽  
Junjing Wang ◽  
Qingqing Zhao
Keyword(s):  
Salt Marsh ◽  
Water Level ◽  
Yellow River ◽  
Yellow River Delta ◽  
River Delta ◽  
The Yellow River ◽  
Total Sulfur ◽  
The Yellow River Delta

Effects of tidal action on methane emissions over a salt marsh in the Yellow River Delta, China

2019 ◽  
Vol 39 (17) ◽  
Author(s):  
贺文君 HE Wenjun ◽  
韩广轩 HAN Guangxuan ◽  
宋维民 SONG Weimin ◽  
李培广 LI Peiguang ◽  
张树岩 ZHANG Shuyan ◽  
...  
Keyword(s):  
Salt Marsh ◽  
Yellow River ◽  
Yellow River Delta ◽  
Methane Emissions ◽  
River Delta ◽  
The Yellow River ◽  
The Yellow River Delta

Effects of reclamation on net ecosystem CO2 exchange in wetland in the Yellow River Delta, China

2013 ◽  
Vol 37 (6) ◽  
pp. 503-516 ◽  
Author(s):  
Li-Qiong YANG ◽  
Guang-Xuan HAN ◽  
Jun-Bao YU ◽  
Li-Xin WU ◽  
Min ZHU ◽  
...  
Keyword(s):  
Yellow River ◽  
Yellow River Delta ◽  
Co2 Exchange ◽  
River Delta ◽  
The Yellow River ◽  
Net Ecosystem Co2 Exchange ◽  
The Yellow River Delta

scholarly journals Impacts of Consolidation Time on the Critical Hydraulic Gradient of Newly Deposited Silty Seabed in the Yellow River Delta

2021 ◽  
Vol 9 (3) ◽  
pp. 270
Author(s):  
Meiyun Tang ◽  
Yonggang Jia ◽  
Shaotong Zhang ◽  
Chenxi Wang ◽  
Hanlu Liu
Keyword(s):  
Yellow River ◽  
Yellow River Delta ◽  
Hydraulic Gradient ◽  
River Delta ◽  
Theoretical Formula ◽  
The Yellow River ◽  
The Yellow River Delta ◽  
Critical Hydraulic Gradient ◽  
Seepage Flows ◽  
The Yrd

The silty seabed in the Yellow River Delta (YRD) is exposed to deposition, liquefaction, and reconsolidation repeatedly, during which seepage flows are crucial to the seabed strength. In extreme cases, seepage flows could cause seepage failure (SF) in the seabed, endangering the offshore structures. A critical condition exists for the occurrence of SF, i.e., the critical hydraulic gradient (icr). Compared with cohesionless sands, the icr of cohesive sediments is more complex, and no universal evaluation theory is available yet. The present work first improved a self-designed annular flume to avoid SF along the sidewall, then simulated the SF process of the seabed with different consolidation times in order to explore the icr of newly deposited silty seabed in the YRD. It is found that the theoretical formula for icr of cohesionless soil grossly underestimated the icr of cohesive soil. The icr range of silty seabed in the YRD was 8–16, which was significantly affected by the cohesion and was inversely proportional to the seabed fluidization degree. SF could “pump” the sediments vertically from the interior of the seabed with a contribution to sediment resuspension of up to 93.2–96.8%. The higher the consolidation degree, the smaller the contribution will be.

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