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Geothermal heating in the Panama Basin. Part I : hydrography of the basin.

Banyte, D. and Morales Maqueda, M. and Hobbs, R. and Smeed, D. A. and Megann, A. and Recalde, S. (2018) 'Geothermal heating in the Panama Basin. Part I : hydrography of the basin.', Journal of geophysical research : oceans., 123 (10). pp. 7382-7392.

Abstract

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−1, 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 2200 m depth, which is about 500 m above the upper boundary of the abyssal water layer.

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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1029/2018JC013868
Publisher statement:Banyte, D., Morales Maqueda, M., Hobbs, R., Smeed, D. A., Megann, A. & Recalde, S. (2018). Geothermal heating in the Panama Basin. Part I: hydrography of the basin. Journal of Geophysical Research: Oceans 123(10): 7382-7392, 10.1029/2018JC013869 (DOI). To view the published open abstract, go to https://doi.org/ and enter the DOI.
Date accepted:21 May 2018
Date deposited:05 September 2018
Date of first online publication:21 October 2018
Date first made open access:21 April 2019

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