River-sea transitions of sediment dynamics: A case study of the tide-impacted Yangtze River estuary

2017 ◽  
Vol 196 ◽  
pp. 207-216 ◽  
Author(s):  
H.F. Yang ◽  
S.L. Yang ◽  
K.H. Xu
Keyword(s):  
Yangtze River ◽  
River Estuary ◽  
Sediment Dynamics ◽  
Yangtze River Estuary

scholarly journals Sinking rates and export flux of Transparent Exopolymer Particles (TEPs) in an eutrophic coastal sea: a case study in the Changjiang (Yangtze River) Estuary

2018 ◽  
Author(s):  
Shujin Guo ◽  
Jun Sun
Keyword(s):  
Significant Role ◽  
Yangtze River ◽  
Significant Positive Correlation ◽  
Carbon Sink ◽  
River Estuary ◽  
Yangtze River Estuary ◽  
Transparent Exopolymer Particles ◽  
Export Flux ◽  
Coastal Sea

AbstractTransparent exopolymer particles (TEPs) are ubiquitous throughout the oceans, and their sedimentation is considered an efficient biological carbon sink pathway. However, the role TEPs play as a carbon sink in eutrophic coastal seas is not well studied. In order to investigate this issue, two cruises in the spring and summer of 2011 were carried out in the Changjiang (Yangtze River) estuary, a typical eutrophic coastal sea. The concentrations, sinking rates, and export flux of TEPs were studied. TEP concentrations ranged from 40.00 to 1040.00 μg Xeq L−1 (mean = 209.70 ± 240.93 μg Xeq L−1) in spring and from 56.67 to 1423.33 μg Xeq L−1 (mean = 433.33 ± 393.02 μg Xeq L−1) in summer. A significant positive correlation between TEP concentrations and chlorophyll (Chl) a concentrations was observed. TEP sinking rates ranged from 0.08 to 0.57 m d−1 (mean = 0.28 ± 0.14 m d−1) in spring and from 0.10 to 1.08 m d−1 (mean = 0.34 ± 0.31 m d−1) in summer. TEP sinking rates were always higher in the upper layers than in the deeper layers during both seasons. The export flux of TEPs was also calculated, and it ranged from 4.95 to 29.40 mg C m−2 d−1 in spring (mean = 14.66 ± 8.83 mg C m−2 d−1) and from 6.80 to 30.45 mg C m−2 d−1 (mean = 15.71 ± 8.73 mg C m−2 d−1) in summer. This study is the first study on TEP sinking in the Changjiang (Yangtze River) Estuary, and it confirmed that TEP plays a significant role as a carbon sink in the eutrophic coastal sea.

Using lithium isotopes to quantitatively decode continental weathering signal: A case study in the Changjiang (Yangtze River) Estuary

2021 ◽  
Vol 64 (10) ◽  
pp. 1698-1708
Author(s):  
Fang Cao ◽  
Shouye Yang ◽  
Chengfan Yang ◽  
Yulong Guo ◽  
Lei Bi ◽  
...  
Keyword(s):  
Yangtze River ◽  
River Estuary ◽  
Yangtze River Estuary ◽  
Lithium Isotopes ◽  
Continental Weathering
Sign in / Sign up

Export Citation Format

Share Document