A deep boundary current in the Arabian Basin

Gregory C. Johnson; Bruce A. Warren; Donald B. Olson

doi:10.1016/0198-0149(91)90004-Y

A deep boundary current in the Arabian Basin

Gregory C. Johnson, Bruce A. Warren, Donald B. Olson

Ocean Sciences

Research output: Contribution to journal › Article

19 Scopus citations

Abstract

Recently collected CTD data are supplemented by historical Nansen bottle data to examine the circulation of bottom water in the Arabian Basin. A deep western-boundary current is observed flowing southeastward below a mid-depth zero-velocity surface along the Carlsberg Ridge. A zero-velocity surface at potential isotherm 1.7°C in chosen on the basis of water-mass properties. However, the origin of the bottom water in the Arabian Basin cannot be determined in a like manner. The bottom water could enter from the Somali Basin through the Owen Fracture Zone, or from the Central Indian Basin through passages in the Chagos-Laccadive Ridge south of the equator. Application of the Stommel-Arons framework for deep-circulation dynamics to the basin suggests that the bottom water is supplied primarily through the Owen Fracture Zone.

Original language	English (US)
Pages (from-to)	653-661
Number of pages	9
Journal	Deep Sea Research Part A, Oceanographic Research Papers
Volume	38
Issue number	6
DOIs	https://doi.org/10.1016/0198-0149(91)90004-Y
State	Published - Jun 1991

ASJC Scopus subject areas

Environmental Science(all)
Earth and Planetary Sciences(all)

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Johnson, G. C., Warren, B. A., & Olson, D. B. (1991). A deep boundary current in the Arabian Basin. Deep Sea Research Part A, Oceanographic Research Papers, 38(6), 653-661. https://doi.org/10.1016/0198-0149(91)90004-Y

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