A note on evanescent behavior of Arctic thermohaline intrusions

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ID: 304912
2002
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Abstract
Temperature/salinity interleaving is a signature of thermohaline transition in the Arctic Ocean. These interleaving features, or intrusions, are observed to decrease in amplitude as they spread laterally from warmer toward cooler water. Here this phenomenon is investigated by considering the effect of a nonlinear equation of state on intrusion structure and behavior. The analysis shows that large-scale gradients of the thermal expansion coefficient (a) can induce a spatial decay of intrusion temperature, salinity, and velocity amplitudes toward cooler water. Spatial decay implies a recirculating flow between adjacent layers, which induces a slow vertical propagation of the intrusions. The temperature-dependence of a provides a mechanism which may act to trap intrusions in the vicinity of warm Arctic boundary currents, inhibiting ventilation of cooler waters.
Reference Key
openalex_W2092582789 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors David Walsh, Eddy C. Carmack
Journal journal of marine research
Year 2002
DOI
10.1357/00222400260497499
URL
https://doi.org/10.1357/00222400260497499
Keywords Keywords not found

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