Evolution status of the distal mud deposit associated with the Pearl River, northern South China Sea continental shelf

Gao, Shu; Liu, Yunling; Yang, Yang; Liu, Paul J.; Zhang, Yongzhan; Wang, Ya Ping

doi:10.1016/j.jseaes.2015.07.024

Cited by 30 publications

(21 citation statements)

References 58 publications

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“…Usually in tide‐dominated coastal areas, sediment dispersal offshore is common. However, for most of the Holocene the Pearl River has been trapping sediment to fill its extensive estuarine waters (Liu et al ., ; Gao et al ., ). Li et al .…”

Section: Discussionmentioning

confidence: 97%

“…Usually in tidedominated coastal areas, sediment dispersal offshore is common. However, for most of the Holocene the Pearl River has been trapping sediment to fill its extensive estuarine waters (Liu et al, 2014;Gao et al, 2015). Li et al (1990) and He et al (2006) have calculated that about 85-90% of the sediment from the Pearl River was deposited in the palaeoestuarine bay during the Holocene.…”

Section: Variation Of Sediment Fluxmentioning

confidence: 99%

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Holocene delta evolution and sediment flux of the Pearl River, southern China

Wang

et al. 2016

J Quaternary Science

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Delta progradation and sediment flux of the Pearl River Delta (PRD), southern China, during the Holocene are presented based on analyses of borehole data on the delta plain. Results indicate that the delta prograded into the drowned valley because of early Holocene inundation from 9 to 6 cal ka BP, as sea‐level rise decelerated. The sea level reached its present level at about 6 cal ka BP and, as a consequence, a large portion of the drowned valley was covered by the estuary, with more than 160 rock islands and platforms. The scattered landmasses promoted active deposition and acted as deposition nuclei during deltaic evolution. Consequently, apart from exhibiting a general tendency towards progression, PRD development occurred less regularly over time and space because of deposition around island boundaries. During the last 2 ka, mainly because of significantly increased human activities, which have trapped sediments in the encircled tidal flats along the front of delta plains, the shoreline has advanced rapidly. Estimated sediment fluxes for the three periods (9–6, 6–2 and 2–0 cal ka BP), based on the sediment volume analysis, were 17–25, 22–30 and 44–58 million t a−1, respectively.

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Section: Discussionmentioning

confidence: 97%

Section: Variation Of Sediment Fluxmentioning

confidence: 99%

Holocene delta evolution and sediment flux of the Pearl River, southern China

Wang

et al. 2016

J Quaternary Science

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“…The information on sediment provenance is fundamental in the interpretations of sedimentary records associated with the Holocene sedimentary systems, especially those of large rivers (Gao et al, 2015). The sedimentary materials supplied by the Changjiang River are the largest source to the CRSS, with a sediment flux of 486 Mt•yr -1 (Milliman et al, 1985) before the building of the many dams in the catchment areas.…”

Section: Discussionmentioning

confidence: 99%

“…In terms of sediment dispersal and accumulation, they contribute to the overall shelf deposits which are otherwise only linked with the mainland's rivers. In such places, the huge sedimentary systems consisting of river deltas and distal mud deposits (Gao et al, 2015;Hanebuth et al, 2015) are best records of past climate, environment and ecosystem changes (Bianchi and Allison, 2009;Gao and Collins, 2014;Gao et al, 2016), but the knowledge of sediment flux from the islands in addition to the mainland input (Syvitski, 2003) is crucial to an appropriate interpretation of the sedimentary records.…”

Section: Introductionmentioning

confidence: 99%

“…Regarding the above mentioned situations, the Zhoushan Archipelago (ZA) in eastern China represents a typical example. For the Holocene period, the Changjiang River sedimentary system (CRSS) has been formed on the inner continental shelf of the East China Sea, including the Changjiang River delta, Hangzhou Bay mud deposits, and Zhejiang-Fujian inner shelf mud deposits (Liu et al, 2006;Xu et al, 2012;Gao, 2013;Gao et al, 2015). The ZA, located to the south of the Changjiang River mouth, lies over the corridor of the southward dispersal of the Changjiang Diluted Water (CDW), and in between the Hangzhou Bay and the East China Sea (ECS) (Hu et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Sediment flux from the Zhoushan Archipelago, eastern China

Gao

Wang

et al. 2018

J. Geogr. Sci.

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Knowledge of the sediment flux derived from different sources is critical for interpreting the sedimentary records associated with large river sedimentary systems. For the Changjiang River system, previous studies hardly focused on the sediment load from the adjacent Zhoushan Archipelago (ZA). Based on four prediction models, aiming to improve the understanding of the sediment load from the ZA during the Holocene, we show that the predicted sediment flux of the ZA ranges from ~0.7 to 26.5 Mt•yr-1 , with an average value of 10.7 Mt•yr-1 , and the islands with a relatively large area or high relief contribute greatly to the total flux. This sediment load is an order of magnitude lower than that of the Changjiang River, but it is similar to those of the local small rivers. Located in the core area of the southward dispersal path of the Changjiang River plume, the ZA also influences the sediment transport into Hangzhou Bay and over the Zhejiang-Fujian coastal seas. On the Holocene temporal scale, e.g., for the period from 6 ka BP to 2 ka BP, the sediments discharged from the ZA had a considerable effect on the shelf sedimentary system. This study provides evidence for an important role an archipelago can play in terms of sediment supply and transport in coastal and inner continental shelf regions.

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