Spatial distribution of variable density in the Gerlache and Bransfield straits during the austral summer between 1979-2019
DOI:
https://doi.org/10.26640/22159045.2022.584Keywords:
Antarctic Treaty, Gerlache, Bransfield, density, quality control, austral summerAbstract
Colombia has carried out expeditions to the Antarctic since 2014, with the aim of contributing to knowledge about the white continent and materializing national interests in it. The present study contributes to the understanding of the oceanographic dynamics in the Gerlache and Bransfield straits from the joint analysis of temperature, salinity and pressure information collected with CTD equipment during the Antarctic expeditions carried out by Colombia between 2014 and 2019, complemented with 40-year data obtained from the World Ocean Database. This analysis allowed, through a prior quality control, to calculate and graph the horizontal distribution of the density variable at different standard depths during the austral summer between 1979 and 2019, in order to understand the distribution of this variable in the study area. The behavior of density was analyzed, demonstrating through the results that this parameter occurs due to variations in salinity and not in temperature, as occurs at low latitudes. Unlike previous studies carried out in the Antarctic Peninsula for a particular year, in the present investigation a period of 40 years of the southern summer (January, February and March) was selected, with a view to knowing the horizontal distribution of the variable density for different standard depths and to determine the expected conditions, which are an indicator of behavior at a general level in the study area.
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