Distribution of bio-optical parameters in the Lomonosov equatorial undercurrent in December 2019

Alexandr A. Latushkin; Vladimir A. Artemiev; Pavel A. Salyuk; Anton V. Garmashov

doi:10.1117/12.2575466

12 November 2020 Distribution of bio-optical parameters in the Lomonosov equatorial undercurrent in December 2019

Alexandr A. Latushkin, Vladimir A. Artemiev, Pavel A. Salyuk, Anton V. Garmashov

Proceedings Volume 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 1156041 (2020) https://doi.org/10.1117/12.2575466
Event: 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020, Moscow, Russian Federation

Abstract

The paper presents a joint analysis of direct measurements of bio-optical, hydro-optical and hydrodynamic characteristics performed on a section through the Lomonosov equatorial undercurrent in December 2019 along 26 degrees of west longitude. The vertical structure of the temperature and salinity of seawater, the speed and direction of the currents, the concentration of chlorophyll-a and the fluorescence of dissolved organic matter (DOM), and light beam attenuation coefficient at 525 and 625 nm were analyzed. The obtained sections show a low content of the main optically active components of seawater. The maximum values of all the analyzed optical parameters were recorded on a pycnocline at depths of 60-80 meters, where phytoplankton cells develop, which mainly determine the variability of the optical characteristics of the region.

Citation Download Citation

Alexandr A. Latushkin, Vladimir A. Artemiev, Pavel A. Salyuk, and Anton V. Garmashov "Distribution of bio-optical parameters in the Lomonosov equatorial undercurrent in December 2019", Proc. SPIE 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 1156041 (12 November 2020); https://doi.org/10.1117/12.2575466

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