Evolution of a tide-dominated abandoned channel: A case of the abandoned Qingshuigou course, Yellow River

Wu, Xiao; Wang, Houjie; Bi, Naishuang; Nittrouer, Jeffrey A.; Xu, Jingping; Cong, Shuai; Carlson, Brandee; Lu, Taian; Li, Zhaoying

doi:10.1016/j.margeo.2020.106116

Cited by 14 publications

(13 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4 ). The abandoned-channel fill mainly consists of organic-rich structureless mud and is similar to the facies of other abandoned channels reported from modern and ancient systems [e.g., 4 , 19 , 20 ]. Subsequent to the detachment of the Ba Lai channel from the deltaic network, tidal currents were likely the main acting process and were rapidly infilling the channel importing sediment from the mouth.…”

Section: Evolution Of the Ba Lai Palaeochannelsupporting

confidence: 63%

Abandonment and rapid infilling of a tide-dominated distributary channel at 0.7 ka in the Mekong River Delta

Gugliotta

Saito

Ta³

et al. 2021

Sci Rep

View full text Add to dashboard Cite

The Ba Lai distributary channel of the Mekong River Delta was abandoned and infilled with sediment during the Late Holocene, providing a unique opportunity to investigate the sediment fill, timing and mechanisms of channel abandonment in tide-dominated deltaic systems. Based on analysis and age dating of four sediment cores, we show that the channel was active since 2.6 ka and was abandoned at 0.7 ka as marked by the abrupt disappearance of the sand fraction and increase in organic matter and sediment accumulation rate. We estimate that the channel might have been filled in a time range of 45–263 years after detachment from the deltaic network, with sediment accumulation rates of centimetres to decimetres per year, rapidly storing approximately 600 Mt of organic-rich mud. We suggest that the channel was abandoned due to a sediment buildup favoured by an increase in regional sediment supply to the delta. This study highlights that mechanisms for abandonment and infilling of tide-dominated deltaic channels do not entirely fit widely used models developed for fluvial-dominated environments. Their abandonment might be driven by autogenic factors related to the river-tidal and deltaic dynamics and favoured by allogenic factors (e.g., human impact and/or climate change).

show abstract

Section: Evolution Of the Ba Lai Palaeochannelsupporting

confidence: 63%

Abandonment and rapid infilling of a tide-dominated distributary channel at 0.7 ka in the Mekong River Delta

Gugliotta

Saito

Ta³

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…As recent studies have explored, sediment of the eroding lobe fills the abandoned channel. Over time the antecedent topography of the channel is reworked and converted into a mudflat (Carlson et al., 2020; Li et al., 2020; Wu et al., 2020). In the studied delta lobe, this is facilitated by a tidal channel network that extends from the shoreline into the abandoned channel, conveying sediment‐laden water landward during rising tides.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Engineered Diversions and Natural Avulsions on Delta‐Lobe Stability

Carlson

Nittrouer

Swanson

et al. 2021

Geophysical Research Letters

Self Cite

View full text Add to dashboard Cite

Reduced sediment supply and rising sea levels are driving land submergence on deltas worldwide, motivating engineering practices that divert water and sediment to sustain coastal landforms. However, lobe response following channel abandonment by diversions has not been constrained by field‐scale studies. Herein, avulsion and engineered diversion scenarios are explored for the Huanghe delta (China), where three lobes were abandoned in the last 40 yr. Two lobes were completely cut off by diversions, and one naturally by an avulsion. Shoreline retreat rates are strikingly different: ∼400 m/yr for diverted lobes and ∼90 m/yr for avulsed lobe. We hypothesize that this variability is linked to vegetal cover across lobes, and therefore the capacity to buffer hydrodynamic reworking of shoreface sediment. Furthermore, the vegetal cover is related to lobe salinity and elevation, which vary by abandonment style. We offer this as a case study to inform about the efficacy of future delta diversions.

show abstract

“…Moreover, buildings along the banks, wharfs, ships can cause parts of rivers deposited. Simultaneously, due to the increase in diverted water volume and irrigation water on urban river, runoff in the upstream decreases and waste increases, thus, making the river continuously silt up and reduce its flood control function [33,34]. Taking Shenzhen as an example, the rivers in Shenzhen are distributed in the five major watersheds, four major bay and 151 rivers in planning, in which varying degrees of siltation exist.…”

Section: Severe Channel Sedimentationmentioning

confidence: 99%

Problems and Countermeasures of River Management in the Process of Rapid Urbanization in China

Zhao

Wang

Zhang

et al. 2020

Water

View full text Add to dashboard Cite

The rapid process of urbanization has led to water pollution, reduction of space areas and channel deposition. However, current river protection and management levels are not suitable for city development level and human demand. Therefore, these problems have not yet been solved. China is still in an era of rapid urbanization, which means that the influence of urbanization in rivers will increase in the future—and the task of river protection and management will be more arduous. In order to meet the challenges and opportunities brought by urbanization and promote the sustainable use and management of river, this study puts forward relevant suggestions on river protection and management, such as river management mechanisms, economic incentive instruments, technical support, transformation of development concepts, improving laws, regulations and policies and stimulating public participation.

show abstract

Evolution of a tide-dominated abandoned channel: A case of the abandoned Qingshuigou course, Yellow River

Cited by 14 publications

References 52 publications

Abandonment and rapid infilling of a tide-dominated distributary channel at 0.7 ka in the Mekong River Delta

Abandonment and rapid infilling of a tide-dominated distributary channel at 0.7 ka in the Mekong River Delta

Impacts of Engineered Diversions and Natural Avulsions on Delta‐Lobe Stability

Problems and Countermeasures of River Management in the Process of Rapid Urbanization in China

Contact Info

Product

Resources

About