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The Pacific-Atlantic Front in the East Siberian Sea of the Arctic Ocean

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Abstract

It is the purpose of this paper to introduce the reader to the various water masses that are found in the Arctic Ocean and describe how fronts, separating these water masses, are identified through the application of physical and biogeochemical measurements. Variations in the positions/alignments of these fronts help to describe changes in circulation patterns that impact local physical, chemical, and biological systems. In this chapter, the distributions of various physical and geochemical parameters representing summer conditions in the Arctic during 2015, a year of particularly good spatial coverage in terms of scientific observations, will be presented and analyzed with a focus on identifying the front separating Atlantic and Pacific halocline waters in the East Siberian Sea by qualitative means.

Keywords

  • Arctic
  • Fronts
  • Halocline
  • NO parameter
  • Tracers
  • Water masses

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Abbreviations

AOU:

Apparent oxygen utilization

AW:

Atlantic water

BSB:

Barents Sea Branch

ECSW:

Eastern Chukchi Summer Water

FSB:

Fram Strait Branch

LHW:

Lower halocline water

NABOS:

Nansen and Amundsen Basins Observation System

NO3:

Nitrate

O2:

Dissolved oxygen

PO43−:

Phosphate

PW:

Pacific water

PWW:

Pacific Winter Water

S:

Salinity

Si(OH)4:

Silicic acid

SUNA:

Submersible ultraviolet nitrate analyzer

TPC:

Transpolar current

UHW:

Upper halocline water

WCSW:

Western Chukchi Summer Water

θ:

Potential temperature

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Alkire, M.B., Rember, R., Polyakov, I. (2021). The Pacific-Atlantic Front in the East Siberian Sea of the Arctic Ocean. In: The Handbook of Environmental Chemistry. Springer, Berlin, Heidelberg. https://doi.org/10.1007/698_2021_795

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