Processes controlling the distribution and cycling of manganese in the oxygen minimum zone of the Arabian Sea

Vertical and horizontal distributions of dissolved and particulate manganese were investigated in the Arabian Sea (Northwestern Indian Ocean) during the 1995 Spring Intermonsoon period (March–April; US JGOFS Process Cruise 2; TN045). The region is characterized by an intense, basin-wide oxygen minim...

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Bibliographic Details
Published in:Deep-sea research. Part II, Topical studies in oceanography Topical studies in oceanography, 2000, Vol.47 (7), p.1541-1561
Main Authors: Lewis, Brent L, Luther III, George W
Format: Article
Language:English
Subjects:
Marine
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Summary:Vertical and horizontal distributions of dissolved and particulate manganese were investigated in the Arabian Sea (Northwestern Indian Ocean) during the 1995 Spring Intermonsoon period (March–April; US JGOFS Process Cruise 2; TN045). The region is characterized by an intense, basin-wide oxygen minimum zone (OMZ) that strongly influences the manganese distribution. In the OMZ, two distinct dissolved Mn (d-Mn) maxima were observed, at depths of 200–300 m and 600 m, respectively. The latter peak displayed concentration maxima of approximately 6 nanomolar and was largely confined to stations north of 19°N latitude (Stations N2–N7). This mid-depth maximum was associated with the low oxygen core of the OMZ ([O 2]
ISSN:0967-0645
1879-0100
DOI:10.1016/S0967-0645(99)00153-8