Geothermal heating in the Panama Basin. Part II: Abyssal water mass transformation

Banyte, D.; Morales Maqueda, M.; Smeed, D. A. ORCID: https://orcid.org/0000-0003-1740-1778; Megann, A. ORCID: https://orcid.org/0000-0003-0975-6317; Hobbs, R.; Recalde, S.. 2018 Geothermal heating in the Panama Basin. Part II: Abyssal water mass transformation. Journal of Geophysical Research: Oceans, 123 (10). 7393-7406. https://doi.org/10.1029/2018JC013869

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Official URL: http://dx.doi.org/10.1029/2018JC013869

Abstract/Summary

The Panama Basin serves as a laboratory to investigate abyssal water upwelling. The basin has only a single abyssal water inflow pathway through the narrow Ecuador Trench. The estimated critical inflow through the Trench reaches 0.34 ± 0.07 m/s, resulting in an abyssal water volume inflow of 0.29 ± 0.07 Sv. The same trench carries the return flow of basin waters that starts just 200 m above the bottom and is approximately 400‐m deeper than the depth of the next possible deep water exchange pathway at the Carnegie Ridge Saddle. The curvature of temperature‐salinity diagrams is used to differentiate the effect of geothermal heating on the deep Panama Basin waters that was found to reach as high as 2,200‐m depth, which is about 500 m above the upper boundary of the abyssal water layer.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1029/2018JC013869
ISSN:	21699275
Date made live:	03 Jan 2019 15:56 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/521945

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1029/2018JC013869

ISSN:

21699275

Date made live:

03 Jan 2019 15:56 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/521945