Exploration of the marine silver cycle in coastal and open ocean environments of the North Pacific

Five profiles of the silver concentration in the subArctic Northeast Pacific Ocean yield a broad correlation between the Ag content and dissolved Si. However, silver is depleted at intermediate depths where the 02 content is low, implying removal from oxygen-deplete waters. An eighteen-month series...

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Bibliographic Details
Main Author: Kramer, Dennis
Other Authors: Pedersen, Thomas F.
Format: Thesis
Language:English
Published: 2006
Subjects:
chemical oceanography
North Pacific Ocean
Saanich Inlet
British Columbia
UVic Subject Index::Sciences and Engineering::Earth and Ocean Sciences
Pacific
Subarctic
Online Access:http://hdl.handle.net/1828/2124
Description
Summary:Five profiles of the silver concentration in the subArctic Northeast Pacific Ocean yield a broad correlation between the Ag content and dissolved Si. However, silver is depleted at intermediate depths where the 02 content is low, implying removal from oxygen-deplete waters. An eighteen-month series of measurements of dissolved and particulate Ag from Saanich Inlet, BC indicate that Ag concentrations in near-surface waters are influenced by processes occurring outside the inlet. Dissolved silver was not detected in sulphide-bearing deep waters in the fjord. Ag in sediment-trap particles was associated with both biogenic and mineral phases. The Ag/biogenic Si ratio of the particles is related to the concentration of dissolved Ag in the surface waters suggesting a direct link between availability of the metal and its sequestration by diatoms.

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