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| Serno, Sascha; Winckler, Gisela; Anderson, Robert F.; Hayes, Christopher T.; Mcgee, David; Machalett, Bjoern; Ren, Haojia; Straub, Susanne M.; Gersonde, Rainer; Haug, Gerald H.. |
| Eolian dust is a significant source of iron and other nutrients that are essential for the health of marine ecosystems and potentially a controlling factor of the high nutrient-low chlorophyll status of the Subarctic North Pacific. We map the spatial distribution of dust input using three different geochemical tracers of eolian dust, He-4, Th-232 and rare earth elements, in combination with grain size distribution data, from a set of core-top sediments covering the entire Subarctic North Pacific. Using the suite of geochemical proxies to fingerprint different lithogenic components, we deconvolve eolian dust input from other lithogenic inputs such as volcanic ash, ice-rafted debris, riverine and hemipelagic input. While the open ocean sites far away from... |
| Tipo: Text |
Palavras-chave: Eolian dust; Subarctic North Pacific; INOPEX; Helium-4; Th-232; REE. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00291/40196/38719.pdf |
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| Xu, Zhaokai; Li, Tiegang; Yu, Xinke; Li, Anchun; Tang, Zheng; Choi, Jinyong; Nan, Qingyun. |
| To synthetically realize the character of major-element compositions as well as its significance for provenance and paleoenvironment recorded in core sediments of the West Philippine Sea over the last 700 ka, grain size and major elements of 221 bulk sediments, together with major-element compositions in the detrital phase of 16 typical samples, in core MD06-3047 collected from the Benham Rise were analyzed. Both discrimination plot and R-mode factor analysis indicate that vertical changes of major elements are mainly controlled by the sedimentation of nearby volcanic matter and the eolian dust input, whereas influences from marine biologic deposition and hydrothermal activity are minor. In particular, Al2O3 and K2O are representative of an eolian dust... |
| Tipo: Text |
Palavras-chave: Major elements; Provenance; Eolian dust; East Asian winter monsoon; West Philippine Sea. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00264/37557/36494.pdf |
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