He isotope, U/Th isotope, Calcium carbonate, biogenic opal, rare earth element concentrations, and grain size distribution measured on core-top sediments during SONNE cruise SO202 (INOPEX) ...

• Main Authors: Serno, Sascha, Winckler, Gisela, Anderson, Robert F, Hayes, Christopher T, McGee, David, Machalett, Björn, Ren, Haojia Abby, Straub, Susanne M, Gersonde, Rainer, Haug, Gerald H
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2014
• Subjects: Subarctic; ren
• Online Access: https://dx.doi.org/10.1594/pangaea.823124; https://doi.pangaea.de/10.1594/PANGAEA.823124

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, 4He, 232Th 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 the volcanic arcs are dominantly composed of pure eolian dust, lithogenic components other than eolian dust play a more crucial role along the arcs. In sites dominated by dust, eolian dust input appears to be characterized by a nearly uniform grain size mode at ... : Supplement to: Serno, Sascha; Winckler, Gisela; Anderson, Robert F; Hayes, Christopher T; McGee, David; Machalett, Björn; Ren, Haojia Abby; Straub, Susanne M; Gersonde, Rainer; Haug, Gerald H (2014): Eolian dust input to the Subarctic North Pacific. Earth and Planetary Science Letters, 387, 252-263 ...