Sediment transport off the Huanghe (Yellow River) delta and in the adjacent Bohai Sea in winter and seasonal comparison

Yang, Zuosheng; Ji, Youjun; Bi, Naishuang; Lei, Kun; Wang, Houjie

doi:10.1016/j.ecss.2010.06.005

Cited by 190 publications

(102 citation statements)

References 32 publications

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“…Given the averaged F fossil of 0.41 ± 0.15 (n = 41) obtained in this study, the export fluxes of Huanghe POC fossil can be estimated as 3.13 Tg a À1 under natural conditions, representing c. 5% of the global riverine POC fossil input to the oceans (40 À 80 Tg a À1 ) (Meybeck, 1993;Blair et al, 2003). Additionally, some of these Huanghe materials can be resuspended by strong winter storms and then dispersed by strong winter coastal current Yang et al, 2011;Hu et al, 2012a). Although the fate of huge amounts of Huanghe POC fossil to the sea is still unconstrained, it should be largely re-buried in the estuary/delta area, resulting from rapid accumulation due to the frequent hyperpycnal events before 1999 (averaged 33 days each year) .…”

Section: Fluxes Of Poc From the Huanghe To The Seamentioning

confidence: 53%

Effect of human‐controlled hydrological regime on the source, transport, and flux of particulate organic carbon from the lower Huanghe (Yellow River)

et al. 2015

Earth Surf Processes Landf

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Evaluating the role of fluvial transfer of terrestrial organic carbon (OC) and subsequent burial in the global carbon cycle requires the sources and fluxes of fluvial OC to be assessed, which remains poorly constrained in the Huanghe (Yellow River). Here, we report the elemental, stable isotopic, and radiocarbon activity of particulate organic carbon (POC) sampled at the outlet of Huanghe in 2012–2013. We show that the Huanghe riverine POC can be explained by binary mixing of fossil (POCfossil) and non‐fossil (POCnon‐fossil) components, the former may reach ~40% of the total POC. The Huanghe POCnon‐fossil is mostly sourced from C3 plants, with a mean residence time of c. 2200 years. The current human‐controlled hydrological regime strongly influenced the POC sources, transport modes, and fluxes. In 2012–2013, the Huanghe delivered 0.73 Tg (1 Tg = 1012 g) of POC to the sea, and about 28% of the annual POC flux occurred within a short human induced flood event. Globally, the Huanghe should be one of the largest rivers in the transfer and re‐burial of fossil OC. However, the fate of Huanghe fossil OC is still unconstrained and needs to be further investigated. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Fluxes Of Poc From the Huanghe To The Seamentioning

confidence: 53%

Effect of human‐controlled hydrological regime on the source, transport, and flux of particulate organic carbon from the lower Huanghe (Yellow River)

et al. 2015

Earth Surf Processes Landf

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“…In the summer, prevailing winds are southeasterly and weak (wind speeds 4–6 m s −1 ). Correspondingly, during the winter and spring, strong winds drive tall waves, with wave heights during winter storms reaching 7 m [ Yang et al ., , ]. Such intensive wind‐wave patterns frequently drive the resuspension of surface sediments in the study area.…”

Section: Discussionmentioning

confidence: 99%

Using Landsat 8 data to estimate suspended particulate matter in the Yellow River estuary

et al. 2017

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The distribution of suspended particulate matter (SPM) and its variations in estuary regions are key to promoting carbon, oxygen, and nutrient cycling in coastal regions and nearby seas. This study presents SPM estimations for the Yellow River estuary from Landsat 8 Operational Land Imager (L8/OLI) data from 2013 to 2016. L8/OLI‐measured remote sensing reflectance (Rrs) was cross‐validated with Moderate Resolution Imaging Spectroradiometer (MODIS) measurements, and SPM concentrations calculated from the tuned retrieval model were validated with in situ observations. The validation shows that L8/OLI can provide reasonably Rrs, which can be used to quantify SPM distributions and variations in the Yellow River estuary. Three year averaged SPM maps show that highly turbid waters are mostly found in an ovate area surrounding the mouth of the Yellow River. The corresponding area proportion is less than 30%, with SPM concentrations greater than 100 g m−3. High variations of SPM distributions are consistent with high SPM concentrations, and vice versa. Significant difference is observed between dry and wet seasons. Higher SPM in the dry season is observed both in range and intensity compared to those of the wet season. Furthermore, multiyear averaged SPM distributions with high concentrations are mainly attributable to currents. Significant seasonal variations are mainly controlled by sediment resuspension processes driven by wind‐wave forces. Due to human interventions, seasonal variability in river runoff and sediment discharge from the Yellow River has decreased in recent years. Accordingly, seasonal variability in SPM distributions in the Yellow River estuary due to sediment discharge has decreased.

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“…Dominated by seasonal monsoon activities, the intensity of sediment transport in winter is much stronger than in summer due to the powerful effect of winter storms (Yang et al, ). Most of the riverine sediment discharging into the Bohai Sea is rapidly deposited in the nearshore area shallower than 12 m in summer (Wu et al, ).…”

Section: Discussionmentioning

confidence: 99%

Novel, Repeated Surveys Reveal New Insights on Sediment Flux Through a Narrow Strait, Bohai, China

Wang

et al. 2019

JGR Oceans

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Straits are both a choke point and passage through which material and energy are exchanged between two adjoining water bodies. Understanding the mechanisms that drive these exchanges therefore is vital to quantifying the water and sediment budgets in regional and global oceans. Here we present a study in which a novel, phase‐averaging method was employed to better estimate the net‐suspended sediment fluxes through the entire Bohai Strait, the only passage for the massive Yellow River‐delivered sediment to leave the enclosed Bohai Sea for the open Yellow Sea. In winter, the transport through the strait was nearly barotropic in waters well mixed by the energetic winter monsoons. The transport became primarily baroclinic (opposite directions between upper and lower layers) in spring due to stratification, especially in the southern part of the strait. Intermittent but frequent southerly winds in northerly dominated winters were responsible for a net westward sediment transport into the Bohai Sea, a finding contrary to a status quo view. Hence, previous studies in which these intermittent southerly wind busts were not included are believed to have overestimated the sediments export from the Bohai Sea.

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Sediment transport off the Huanghe (Yellow River) delta and in the adjacent Bohai Sea in winter and seasonal comparison

Cited by 190 publications

References 32 publications

Effect of human‐controlled hydrological regime on the source, transport, and flux of particulate organic carbon from the lower Huanghe (Yellow River)

Effect of human‐controlled hydrological regime on the source, transport, and flux of particulate organic carbon from the lower Huanghe (Yellow River)

Using Landsat 8 data to estimate suspended particulate matter in the Yellow River estuary

Novel, Repeated Surveys Reveal New Insights on Sediment Flux Through a Narrow Strait, Bohai, China

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