Barium in seawater and sediments from the Artic Ocean ...

• Main Authors: Falkner, Kelly Kennison, Macdonald, Robie W, Carmack, Eddy C, Weingartner, T
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1994
• Subjects: Underway cruise track measurements; Bottle, Niskin; HL92-16; Henry Larson; Silicon Cycling in the World Ocean SINOPS; Bering Strait; Chukchi
• Online Access: https://dx.doi.org/10.1594/pangaea.734072; https://doi.pangaea.de/10.1594/PANGAEA.734072

As part of ongoing circulation studies in the Arctic, seawater samples for dissolved Ba concentrations were obtained during Sep.-Oct., 1992 at several locations in the Bering Strait, Eastern Chukchi and Southern Beaufort Seas. The results reveal a dynamic rang (10 to 150 nmol/kg) for this element in the Arctic equal to or greater than that in combined Atlantic, Indian and Pacific oceans. Lowest levels are observed in surface waters, with values tending to decrease northwards in the direction of currents generally flowing frorn the Bering Strait along the Alaskan coast. Low surfacc concentrations tend to be accompanied by relatively enriched near bottom levels. On the basis of these spatial distributions, hydrographic observations and a knowledge of its behavior in other marine settings, it appears that Ba can be significantly depleted from surface waters as a result of the highly seasonal biological aclivities over Arctic marginal shelves. Removal at the surface is counteracted to some extent by regeneration ... : Supplement to: Falkner, Kelly Kennison; Macdonald, Robie W; Carmack, Eddy C; Weingartner, T (1994): The potential of Barium as a tracer in Arctic water masses. In: Johannessen, O M; Muench, R D & Overland, J E (eds.), The polar oceans and their role in shaping the global environment. Geophysical Monograph Series, American Geophysical Union, 540 pages, ISBN 0-87590-042-9, 85, 63-76 ...