Holocene sedimentary systems on continental shelves

Marine Geology, Journal Year: 2014, Volume and Issue: 352, P. 268 - 294

Published: March 31, 2014

Language: Английский

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Widespread Occurrence and Transport of p-Phenylenediamines and Their Quinones in Sediments across Urban Rivers, Estuaries, Coasts, and Deep-Sea Regions

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(6), P. 2393 - 2403

Published: Jan. 31, 2023

p-Phenylenediamines (PPDs) are widely used as antioxidants in tire rubber, and their derived quinone transformation products (PPD-Qs) may pose a threat to marine ecosystems. A compelling example is N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD)-derived quinone, called 6PPD-Q, the causal toxicant for stormwater-linked acute mortality toward coho salmon. However, knowledge of co-occurrences PPDs PPD-Qs transport from freshwater oceanic waterbodies on large geographical scale remains unknown. Herein, we performed first large-scale survey these chemicals sediments across urban rivers, estuaries, coasts, deep-sea regions. Our results demonstrated that seven four ubiquitously present riverine, estuarine, coastal sediments, most them also occur sediments. The dominant concern were identified 6PPD 6PPD-Q. Total sedimentary concentrations presented clear spatial trend with decreasing levels rivers (medians: 39.7 15.2 ng/g) estuaries (14.0 5.85 then coasts (9.47 2.97 regions (5.24 3.96 ng/g). Interestingly, variation ratios 6PPD-Q (R6PPD/6PPD-Q) trend. field measurements implied riverine outflows be an important route rubber-derived open oceans.

Language: Английский

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Enhanced silicate weathering of tropical shelf sediments exposed during glacial lowstands: A sink for atmospheric CO2

Geochimica et Cosmochimica Acta, Journal Year: 2016, Volume and Issue: 200, P. 123 - 144

Published: Dec. 18, 2016

Language: Английский

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Pollution status of polycyclic aromatic hydrocarbons in surface sediments from the Yangtze River Estuary and its adjacent coastal zone

Chemosphere, Journal Year: 2016, Volume and Issue: 162, P. 80 - 90

Published: July 30, 2016

Language: Английский

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Modern transport and deposition of settling particles in the northern South China Sea: Sediment trap evidence adjacent to Xisha Trough

Deep Sea Research Part I Oceanographic Research Papers, Journal Year: 2014, Volume and Issue: 93, P. 145 - 155

Published: Aug. 23, 2014

Language: Английский

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Rapid response of the Changjiang (Yangtze) River and East China Sea source-to-sink conveying system to human induced catchment perturbations

Marine Geology, Journal Year: 2019, Volume and Issue: 414, P. 1 - 17

Published: May 14, 2019

Language: Английский

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Source and accumulation of gas hydrate in the northern margin of the South China Sea

Marine and Petroleum Geology, Journal Year: 2015, Volume and Issue: 69, P. 127 - 145

Published: Oct. 25, 2015

Language: Английский

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Temporal and spatial patterns of sediment deposition in the northern South China Sea over the last 50,000 years

Palaeogeography Palaeoclimatology Palaeoecology, Journal Year: 2016, Volume and Issue: 465, P. 212 - 224

Published: Oct. 26, 2016

Language: Английский

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Clay mineralogy of the riverine sediments of Hainan Island, South China Sea: Implications for weathering and provenance

Journal of Asian Earth Sciences, Journal Year: 2014, Volume and Issue: 96, P. 84 - 92

Published: Sept. 6, 2014

Language: Английский

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Holocene sedimentary systems on a broad continental shelf with abundant river input: process–product relationships

Geological Society London Special Publications, Journal Year: 2015, Volume and Issue: 429(1), P. 223 - 259

Published: Sept. 8, 2015

Abstract The region consisting of the Bohai, Yellow and East China seas represents a typical wide continental shelf environment with abundant terrestrial sediment supply. Here, variety sedimentary systems have been formed during Holocene period. These unique characteristics in terms spatial distribution, material composition, deposition rate, timing duration for their formation, which are related to active sediment-transport processes induced by tides waves, circulations, gravity flows. records contained within deposits high temporal resolution, but each limited coverage. However, if these connected, then they may form complete archive environmental change studies. In field process–product relationship studies, mid-Holocene coastal on Jiangsu coast, early–middle sequences Hangzhou Bay, mud off Zhejiang–Fujian coasts other areas over importance. be understood identifying supply (from both seabed reworking sea-level rise events river discharges), transport-accumulation processes, formation future evolution systems, numerical modelling becomes increasingly important.

Language: Английский

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