A survival analysis of the gulf stream warm core rings
Silva, E. Nishchitha S.
Welandawe, Manushi K. V.
Gawarkiewicz, Glen G.
Silver, Adrienne M.
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Survival of Gulf Stream (GS) warm core rings (WCRs) was investigated using a census consisting of a total of 961 rings formed during the period 1980–2017. Kaplan‐Meier survival probability and Cox hazard proportional models were used for the analysis. The survival analysis was performed for rings formed in four 5° zones between 75° W and 55° W. The radius, latitude, and distance from the shelf‐break of a WCR at formation all had a significant effect on the survival of WCRs. A pattern of higher survival was observed in WCRs formed in Zone 2 (70°–65° W) or Zone 3 (65°–60° W) and then demised in Zone 1 (75°–70° W). Survival probability of the WCRs increased to more than 70% for those formed within a latitude band from 39.5° to 41.5° N. Survival probability is reduced when the WCRs are formed near the New England Seamounts.
Author Posting. © American Geophysical Union, 2020. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 125(10),(2020): e2020JC016507, https://doi.org/10.1029/2020JC016507.
Suggested CitationSilva, E. N. S., Gangopadhyay, A., Fay, G., Welandawe, M. K. V., Gawarkiewicz, G., Silver, A. M., Monim, M., & Clark, J. (2020). A survival analysis of the gulf stream warm core rings. Journal of Geophysical Research: Oceans, 125(10), e2020JC016507.
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