Dynamical Response of Changjiang River Plume to a Severe Typhoon With the Surface Wave‐Induced Mixing

Zhang, Zhiwei; Wu, Hui; Yin, Xijie

doi:10.1029/2018jc014266

Cited by 47 publications

(69 citation statements)

References 55 publications

(97 reference statements)

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“…The hydrodynamic model used in this paper has been well calibrated and validated for elevation, current, salinity (Wu et al, , ), temperature (Huang et al, ; Wu et al, ), and suspended sediment concentration (Luo et al, ). The model performs well in reproducing the plume extension and its front characteristics (Yuan et al, ; Zhang et al, ). The ecosystem module was validated in the current study (i.e., nutrients and chlorophyll), using the six data series of in situ data collected during winter, spring, and summer from 2016 to 2017.…”

Section: Methodsmentioning

confidence: 99%

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Phytoplankton Blooms off a High Turbidity Estuary: A Case Study in the Changjiang River Estuary

Wang

Lin

et al. 2019

JGR Oceans

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The occurrence of phytoplankton blooms in estuarine and coastal waters is codetermined by the export of fluvial nutrients and other water properties such as turbidity. In this study, the Changjiang River Estuary was used as an example to investigate the intrinsic link between river plume dynamics, riverine nutrient loading, suspended sediment concentration, and phytoplankton blooms with a coupled hydrodynamic-sediment-ecosystem numerical model. Suspended sediment concentration from the sediment module was used to parameterize light attenuation in waters, which, in association with river plume dynamics, was found to impact phytoplankton distribution. Data that was collected in situ, in addition to satellite data for chlorophyll, nutrients, and suspended sediments, were used to validate the model, which performed well. The surface high chlorophyll centers exhibited a patch-like pattern from the northeast to the south off the Changjiang River mouth. The high chlorophyll concentration within the river plume was mainly determined by riverine nutrient exports, and potential phosphate limitation occurred away from the river mouth. The chlorophyll concentration decreased dramatically shoreward of the sediment front, which was controlled by the bottom river plume front. The bottom plume front was an intrinsic feature of the Changjiang River plume and similar river plume systems, which set a boundary separating the well-mixed (turbid) nearshore waters and stratified (clear) offshore waters. Without considering the sediment shading effect, the model yielded an unrealistic chlorophyll distribution with artificially high values in the turbid area. This indicated that light attenuation was a key factor limiting phytoplankton blooms in turbid river estuaries.Plain Language Summary In estuaries and coastal waters, the aquatic environment is affected by both riverine nutrient input and water properties such as turbidity. The associated river plume may play an essential role in controlling water properties, thus influencing the aquatic environment such as the algal blooms. In the current study, a well-validated hydrodynamic-sediment-ecosystem model was used to simulate phytoplankton blooms and the dynamic link with the Changjiang River plume. The results showed that the surface suspended sediment front was of vital importance in determining the shoreward boundary of the phytoplankton bloom area. Light attenuation due to high turbidity became a major factor limiting phytoplankton blooms in turbid nearshore waters. In environments with a strong tidal influence, the surface suspended sediment front was closely related to the bottom river plume front, which gave rise to differences in water stabilization and thus resulted in turbid conditions on either side. The results of this study provided a good reference for understanding the phytoplankton distribution characteristics in estuaries with high turbidity.

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Section: Methodsmentioning

confidence: 99%

“…More details regarding the hydrodynamic numerical model can be found in Wu et al (). The hydrodynamic model was validated comprehensively and performed reasonably in reproducing the Changjiang plume dynamics (eg., Wu & Wu, ; Wu et al, , , ; Yuan et al, ; Zhang et al, ).…”

Section: Methodsmentioning

confidence: 99%

Phytoplankton Blooms off a High Turbidity Estuary: A Case Study in the Changjiang River Estuary

Wang

Lin

et al. 2019

JGR Oceans

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“…Poststorm SSS salinification in the trail of TCs has already been extensively reported both from in situ and satellite observations (e.g., see Bond et al., 2011 ; Chaudhuri et al., 2019; Domingues et al., 2015; Grodsky et al., 2012; Lin et al., 2017; Liu et al., 2020; McPhaden et al., 2009; Price, 1981; Reul et al., 2014; Sanford et al., 1987; Steffen & Bourassa, 2018; Venkatesan et al., 2014; Vinayachandran et al., 2003; Yue et al., 2018; Zhang et al., 2016, 2018). SSS is generally expected to increase in the wakes of cyclones because subsurface water is on average saltier than surface water in the convective regions associated with cyclonic activity (Jourdain et al., 2013).…”

Section: Introductionmentioning

confidence: 99%

Satellite Observations of the Sea Surface Salinity Response to Tropical Cyclones

Reul

Chapron

Grodsky

et al. 2021

Geophysical Research Letters

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“…On the one hand, typhoon transit strengthens the mixing process of offshore water [44][45][46]. On the other hand, the heavy rainfall brought by a typhoon rapidly increases river runoff into the sea, and a large amount of land-based materials are washed away and brought into the estuary offshore area [47][48][49][50].…”

Section: Sea Surface Salinity Response To Tropical Cyclonesmentioning

confidence: 99%

Response of the Coastal Ocean to Tropical Cyclones

Wu¹,

Conde²

2020

Current Topics in Tropical Cyclone Research

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The Northwest Pacific and the South China Sea region are the birthplaces of most monsoon disturbances and tropical cyclones and are an important channel for the generation and transmission of water vapor. The Northwest Pacific plays a major role in regulating interdecadal and long-term changes in climate. China experiences the largest number of typhoon landfalls and the most destructive power affected by typhoons in the world. The hidden dangers of typhoon disasters are accelerating with the acceleration of urbanization, the rapid development of economic construction and global warming. The coastal cities are the most dynamic and affluent areas of China's economic development. They are the strong magnetic field that attracts international capital in China, and are also the most densely populated areas and important port groups in China. Although these regions are highly developed, they are vulnerable to disasters. When typhoons hit, the economic losses and casualties caused by gale, heavy rain and storm surges were particularly serious. This chapter reviews the response of coastal ocean to tropical cyclones, included sea surface temperature, sea surface salinity, storm surge simulation and extreme rainfall under the influence of tropical cyclones.

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Dynamical Response of Changjiang River Plume to a Severe Typhoon With the Surface Wave‐Induced Mixing

Cited by 47 publications

References 55 publications

Phytoplankton Blooms off a High Turbidity Estuary: A Case Study in the Changjiang River Estuary

Phytoplankton Blooms off a High Turbidity Estuary: A Case Study in the Changjiang River Estuary

Satellite Observations of the Sea Surface Salinity Response to Tropical Cyclones

Response of the Coastal Ocean to Tropical Cyclones

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