Dominant host phase of mercury within the sediments of the East China Sea inner shelf: Implications for mercury inputs DOI

Xin Chang,

Xiting Liu, Kaidi Zhang

et al.

Chemical Geology, Journal Year: 2024, Volume and Issue: 668, P. 122334 - 122334

Published: Aug. 17, 2024

Language: Английский

Fate of terrigenous organic carbon within shelf sediments from the East China Sea controlled by sea-level and climatic changes since the last deglaciation DOI
Mingyu Zhang, Xiting Liu, Anchun Li

et al.

Palaeogeography Palaeoclimatology Palaeoecology, Journal Year: 2024, Volume and Issue: 650, P. 112386 - 112386

Published: July 19, 2024

Language: Английский

Citations

5

Depositional control on the fate of reactive iron in shelf sediments since the last deglaciation: A case study of the East China Sea DOI
Fanxing Kong, Xiting Liu, Anchun Li

et al.

Marine Geology, Journal Year: 2024, Volume and Issue: 475, P. 107358 - 107358

Published: Sept. 1, 2024

Language: Английский

Citations

1

Spatial and historical patterns of sedimentary organic matter sources and environmental changes in the Ross Sea, Antarctic: implication from bulk and n-alkane proxies DOI Creative Commons

Yang Dan,

Wenshen Chen,

Wenhao Huang

et al.

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: Oct. 7, 2024

Organic carbon (OC) burial in the Antarctic marginal seas is essential for regulating global climate, particularly due to its association with ice shelf retreat. Here, we analyzed total OC (TOC), nitrogen (TN), radiocarbon isotope, n -alkanes and relative indicators surface core sediments from Ross Sea, West Antarctica. Our aim was investigate spatial historical changes sources, explore influencing factors implications retreat since last glacial maximum (LGM). results revealed distinct patterns of sources as indicated by -alkane sediments. In Western predominantly originated phytoplankton bacteria, evidenced their unimodal distribution, low preference index (CPI) short-chain (CPI L = 1.41 ± 0.30), terrestrial/aquatic ratio (TAR 0.22 0.14). Southwest were derived marine algae terrestrial bryophytes, bimodal low/high molecular-weight (L/H 0.62 0.21), CPI long-chain H 1.18 0.16), high TAR (1.26 0.66). contrast, Eastern Sea exhibited that a combination dust soils and/or leaf waxes mid-latitude higher plant, suggested both distributions, L/H (1.60 0.58) (2.04 0.28), medium (0.61 0.30). Geologically, during LGM (27.3 – 21.0 ka before present (BP)), there an increased supply (TOC/TN 13.63 1.29, distribution main peaks at C 17 / 19 27 ). From 8.2 BP, glaciers retreated temperatures rose, proportion significantly 9.09 1.82, 18 25 BP present, continued current position, contribution became dominant 8.18 0.51, peak , (0.41 0.32)). This research has significant understanding variations climatic impacts context accelerated glacier melting.

Language: Английский

Citations

1

Sedimentary evolution of the East China Sea with implications for the relationship between the East Asian winter and summer monsoon over the past 6.3 ka DOI
Wenzhe Lyu, Tengfei Fu, Guangquan Chen

et al.

Journal of Asian Earth Sciences, Journal Year: 2024, Volume and Issue: 270, P. 106217 - 106217

Published: June 2, 2024

Language: Английский

Citations

1

Marine ecological effect of typhoon influenced by the frequency-phases of ENSO and anthropogenic activity: the East China Sea example DOI
Shuo Zhang, Shengjing Liu, Xiaomei Xu

et al.

Palaeogeography Palaeoclimatology Palaeoecology, Journal Year: 2023, Volume and Issue: 629, P. 111783 - 111783

Published: Aug. 23, 2023

Language: Английский

Citations

3

High-resolution record of temporal change in organic matter burial over the past ∼8,600 years on the northwestern continental slope of the South China Sea DOI Creative Commons
Gang Tong, Lilei Chen, Guangxu Zhang

et al.

Frontiers in Earth Science, Journal Year: 2023, Volume and Issue: 11

Published: Aug. 17, 2023

Sedimentary organic matter (SOM) on continental slopes in marine regions can sensitively record climatic and environmental changes. In this study, total carbon content (TOC), nitrogen (TN), their stable isotope compositions (δ 13 C δ 15 N) for sediments of core G02 were investigated (at ∼24.2-year resolution) to reveal the temporal variations sources main controls distribution buried northwestern slope South China Sea over last ∼8600 years. Results a binary mixing model that ∼82.3 ± 3% SOM is derived from autochthonous sources. We suggest contents are governed by distinct factors. The more positive N values before Pulleniatina Minimum Event occurrence ascribed stronger subsurface water intrusion Kuroshio Current, which led enhanced denitrification turn counteracted effect with surface caused East Asian winter monsoon. show fluctuant decrease during ca. 8.6–3.0 cal kyr BP conspicuous increase 3.0–1.4 BP. These changes attributed productivity induced continuous weakening monsoon terrigenous input weakened Indian summer precipitation, respectively. Since 1.4 BP, human activities have become dominant factor controlling production carbon. results provide an important basis understanding source-sink processes factors influencing these low-latitude marginal seas.

Language: Английский

Citations

2

1500-Year Sedimentary Records of the East Asian Summer Monsoon and Yellow Sea Warm Current from the Muddy Area of the North Yellow Sea, China DOI Creative Commons
Wenzhe Lyu, Guangquan Chen, Yancheng Wang

et al.

Atmosphere, Journal Year: 2024, Volume and Issue: 15(8), P. 869 - 869

Published: July 23, 2024

Advances in reconstructing the East Asian monsoon have provided important insights into natural climate variability Asia during pre-instrumental period. However, there are still unresolved paleoclimate issues that necessitate use of geological proxy data to further our understanding past changes. This study focused on core B13, located muddy area North Yellow Sea (NYS), investigate evolutionary history over 1500 years and reconstruct records summer (EASM) warm current (YSWC). The mean grain size sediment ranged from 4.2 Φ 5.6 Φ, with sorting coefficient ranging 1.9 2.2, indicating poor sorting. C–M pattern showed a limited range values, M values being between 33 83 μm C 165 287 μm, suggesting uniform-suspension transport. L* index 40.41 44.12, while a* b* indexes 0.55 1.78 2.86 5.94, respectively. A stable relatively strong sedimentary environment is indicated through comprehensive analysis plot, triangular relationship sorting, changes grain-size color parameters. evolution NYS can be categorized three distinct stages. In this study, proxies for EASM YSWC were extracted using VPCA method diffuse spectral reflectance (DSR) data, reliability these has been confirmed comparison other validated proxies. results strength also exhibited stages, corresponding Dark Ages Cold Period (DACP), Medieval Warm (MWP), Little Ice Age (LIA), On centennial scale, correlation was predominantly negative. research validates reconstruction, contributes special area, provides new perspective how eliminate temporal errors verifying two systems.

Language: Английский

Citations

0

Dominant host phase of mercury within the sediments of the East China Sea inner shelf: Implications for mercury inputs DOI

Xin Chang,

Xiting Liu, Kaidi Zhang

et al.

Chemical Geology, Journal Year: 2024, Volume and Issue: 668, P. 122334 - 122334

Published: Aug. 17, 2024

Language: Английский

Citations

0