Sea-level, monsoonal, and anthropogenic impacts on the millennial-scale variability of siliciclastic sediment input into the western Philippine sea since 27 ka SCIE SCOPUS

Cited 2 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
Sea-level, monsoonal, and anthropogenic impacts on the millennial-scale variability of siliciclastic sediment input into the western Philippine sea since 27 ka
Author(s)
Xu, Zhaokai; Li, Tiegang; Clift, Peter D.; Wan, Shiming; Lim, Dhongil; Chang, Fengming; Sun, Rongtao
KIOST Author(s)
Lim, Dhong Il(임동일)
Publication Year
2019-06-15
Abstract
Multiproxy records from Core MD06-3054 in the western Philippine Sea and published results from the nearby Core MD06-3052, which are both located at the northern margin of the Western Pacific Warm Pool (WPWP), provide precise reconstructions and evidence for the potential controls on continental erosion and weathering intensities in Luzon. These data also constrain sediment source-to-sink processes in the sea since 27 ka at the millennial scale. We demonstrate that the siliciclastic fraction is derived from Luzon volcanic rocks and eolian dust from mainland Asia. Stronger physical erosion and chemical weathering generally occurred during the last glaciation, Heinrich Event 1, the Younger Dryas, and the period from 10.3 to 11.3 ka. In contrast, the Bolling-Allerod was characterized by weaker physical erosion and chemical weathering. During the last glaciation, Heinrich Event 1, and the Younger Dryas, the lower sea level led to enhanced erosion and weathering of the exposed shelf sediments. In contrast, the weaker physical erosion and chemical weathering that occurred during the Balling-Allerod and the Holocene, except after 2.1 ka, are closely correlated with the higher sea level. The stronger physical erosion and chemical weathering at 10.3-11.3 ka may be derived from the reworking of older sediments during the time of a strengthening summer monsoon. Furthermore, enhanced human activity since 2.1 ka has become the dominant control on erosion in Luzon. Rapid weathering changes in the WPWP during the last deglaciation highlight the high variability in local controls at low latitudes during these periods and the potential influence of controls at high latitudes.
ISSN
1367-9120
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/601
DOI
10.1016/j.jseaes.2019.04.001
Bibliographic Citation
JOURNAL OF ASIAN EARTH SCIENCES, v.177, pp.250 - 262, 2019
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
SOUTH CHINA SEA; GRAIN-SIZE; SURFACE TEMPERATURE; ASIAN DUST; ND; NORTHERN; CLIMATE; LUZON; GEOCHEMISTRY; ENSO
Keywords
Chemical weathering; Physical erosion; Sea level; East Asian summer monsoon; Anthropogenic activity; Luzon
Type
Article
Language
English
Document Type
Article
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

Marine Geochemistry,Paleoceanography,Marine Pollution,해양지화학,고해양학,해양오염학

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