Sedimentary facies and evolution in the Qiantang River incised valley, eastern China

Lin, Chun-Ming; Zhuo, Hong-Chun; Gao, Shu

doi:10.1016/j.margeo.2005.06.009

Cited by 84 publications

(54 citation statements)

References 36 publications

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“…And "Estuary Jiaojiang" (Li-Dong et al 2014) scattered between marine and freshwater groups only in qualitative 16S rDNA PCoA analysis, suggesting that the community structure revealed in this coastal area is dominated by freshwater types. A similar pattern was observed for Qiantang River, which might be explained by the tide-dominated estuary of this river and around 245 km upstream from the mouth (Lin et al 2005). However, Mai Po n-damo structures based on pmoA sequences had a similar response with SCS ones toward the variations.…”

Section: Discussionsupporting

confidence: 76%

Complex community of nitrite-dependent anaerobic methane oxidation bacteria in coastal sediments of the Mai Po wetland by PCR amplification of both 16S rRNA and pmoA genes

Chen

Zhou

2014

Appl Microbiol Biotechnol

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In the present work, both 16S rRNA and pmoA gene-based PCR primers were employed successfully to study the diversity and distribution of n-damo bacteria in the surface and lower layer sediments at the coastal Mai Po wetland. The occurrence of n-damo bacteria in both the surface and subsurface sediments with high diversity was confirmed in this study. Unlike the two other known n-damo communities from coastal areas, the pmoA gene-amplified sequences in the present work clustered not only with some freshwater subclusters but also within three newly erected marine subclusters mostly, indicating the unique niche specificity of n-damo bacteria in this wetland. Results suggested vegetation affected the distribution and community structures of n-damo bacteria in the sediments and n-damo could coexist with sulfate-reducing methanotrophs in the coastal ecosystem. Community structures of the Mai Po n-damo bacteria based on 16S rRNA gene were different from those of either the freshwater or the marine. In contrast, structures of the Mai Po n-damo communities based on pmoA gene grouped with the marine ones and were clearly distinguished from the freshwater ones. The abundance of n-damo bacteria at this wetland was quantified using 16S rRNA gene PCR primers to be 2.65-6.71 × 10(5) copies/g dry sediment. Ammonium and nitrite strongly affected the community structures and distribution of n-damo bacteria in the coastal Mai Po wetland sediments.

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Section: Discussionsupporting

confidence: 76%

Complex community of nitrite-dependent anaerobic methane oxidation bacteria in coastal sediments of the Mai Po wetland by PCR amplification of both 16S rRNA and pmoA genes

Chen

Zhou

2014

Appl Microbiol Biotechnol

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“…The currents in Hangzhou Bay are tidally-dominated and possesses one of the world's strongest tides. The tidal amplitude typically varies from 3-4 m at the mouth to 4-6 m at the head, but a maximum of 9 m at the head was recorded [24,25]. The average annual water and sediment discharge from the Changjiang River into the ECS are approximately 925ˆ10 9 m 3 and 500ˆ10 6 tons, respectively [26].…”

Section: Study Areamentioning

confidence: 99%

“…This The sinking rate of suspended sediments varies with particle size, shape and relative density. In the study area, the suspended sediments consist mainly of fine particulate material and very fine suspended sediments released by the Changjiang River and Qiantang River [25,[42][43][44][45][46]. Beginning with the reference settling velocity of 0.0002 m/s given by Ramakrishnan and Rajawat [8], a uniform particle sinking rate 0.0006 m/s for suspended sediments is arrived at after model calibration.…”

Section: Sediment Module Configurationmentioning

confidence: 99%

Using GOCI Retrieval Data to Initialize and Validate a Sediment Transport Model for Monitoring Diurnal Variation of SSC in Hangzhou Bay, China

Yang

Mao

Huang

et al. 2016

Water

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Abstract:The diurnal variation of the suspended sediment concentration (SSC) in Hangzhou Bay, China has been investigated using remotely-sensed SSC derived from the Geostationary Ocean Color Imager (GOCI) in combination with a coupled hydrodynamic-ecological model for regional and shelf seas (COHERENS). The SSC maps were inferred through a UV-AC atmospheric correction algorithm and an empirical inversion algorithm from the GOCI Level-1B data. The sediment transport model was initialized from maps of the GOCI-derived SSC and the model results were validated through a comparison with remotely-sensed data. The comparison demonstrated that the model results agreed well with the observations. The relationship between SSC distribution and hydrodynamic conditions was analyzed to investigate the sediment transport dynamics. The model's results indicate that the action of tidal currents dominate the sediment deposition and re-suspension in the coastal waters of the East China Sea. This is especially the case in Hangzhou Bay where the tidal currents are strongest. The satellite-derived sediment data product can not only dramatically improve the specification of the initial conditions for the sediment model, but can also provide valuable information for the model validation, thereby improving the model's overall performance.

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“…Facies A is located at the head of the paleo-estuary. The lateral association with the marine sediment and the poorly sorted medium-to-coarse sand in the lower part of the succession indicate that the sediment was from supplied by the braided river (Hori et al, 2001;Lin et al, 2005). The well-rounded gravels in the lag deposits may reflect that they had been reformed by the tide.…”

Section: Facies a (Tidal River)mentioning

confidence: 99%

Sedimentary facies of the Silurian tide-dominated paleo-estuary of the Tazhong area in the Tarim Basin

Zhang

2008

Pet. Sci.

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As the relative sea-level rose, a paleo-estuary was formed by the marine inundation of the braided river incised valley during the period of the lower sub-member of the upper member of the Kalpingtage. formation of the Silurian in the Tarim Basin, west China. Sandstone-mudstone rhythmite, tidal structures and bimodal cross-bedding are common in these deposits, indicating that tides played a signi¿ cant role in generating the sedimentary structures and the estuary type was tide-dominated. Five depositional facies were grouped: tidal river, sandy and muddy subtidal flat, tidal flat, tidal bar, tidal channel on the basis of lithology, electric properties, rhythmicity, sedimentary structure, fossil and the contact relationship. The sediment distribution showing ¿ rst ¿ ning seaward and subsequent coarsening seaward from head to mouth, implies the two sediment sources in the paleo-estuary. The paleo-estuary of the Tarim Basin is very different from other representative estuaries. The most important distinction is that there are two adjacent estuaries joined by tidal À at onshore and by sandy and muddy subtidal À at in the sea at the same time, while the others only have one. So the Tazhong paleo-estuary shows a good architecture model for the tide-dominated estuary.

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Sedimentary facies and evolution in the Qiantang River incised valley, eastern China

Cited by 84 publications

References 36 publications

Complex community of nitrite-dependent anaerobic methane oxidation bacteria in coastal sediments of the Mai Po wetland by PCR amplification of both 16S rRNA and pmoA genes

Complex community of nitrite-dependent anaerobic methane oxidation bacteria in coastal sediments of the Mai Po wetland by PCR amplification of both 16S rRNA and pmoA genes

Using GOCI Retrieval Data to Initialize and Validate a Sediment Transport Model for Monitoring Diurnal Variation of SSC in Hangzhou Bay, China

Sedimentary facies of the Silurian tide-dominated paleo-estuary of the Tazhong area in the Tarim Basin

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