POSTER Session 2
Tuesday, October 8
11:30–13:10
Poster Session | 1 | 2 | 3 | 4 | Instructions | Schedule at a Glance
ABSTRACT 978 | POSTER T-002
EXAMPLES OF THE INFLUENCE OF UPWELLINGS ON THE SPATIAL DISTRIBUTION OF BIO-OPTICAL CHARACTERISTICS
The formation of the bio-optical characteristics spatial distribution of the water surface layer under the influence of water dynamics is studied using examples obtained in the Norwegian and Barents seas, as well as in the South Atlantic. The parameters characterizing the dynamics of water masses are the surface currents, as well as the divergence of the flow field, with the assumption that contribution of seawater density variability compared with the current velocity impact is small. The flow field divergence was calculated according to reanalysis data. The fluorescence intensities of chlorophyll a (Chl), phycoerythrin, and the seawater beam attenuation coefficient were registered with the help of a flow-through measuring complex. A positive relationship between the values of the flow field divergence and the Chl fluorescence intensity values formed as a result of the subsurface water layer vertical movement is shown. According to the results obtained in the shelf zone of the Norwegian Sea, we found a shift in the areas of increasing fluorescence intensities of phycoerythrin and chlorophyll relative to the upwelling location. This appears to be related to the time required for the development of phytoplankton. An alternation of zones of upwelling and downwelling waters in the area of interaction of the Falkland Current with the waters of the Patagonian shelf is observed. It leads to a change in the depth of the Chl maximum concentration. Some of the results are confirmed by the underway acoustic Doppler current profiler measurements and data from satellite ocean color scanners.
*Evgeniia Aglova, Shirshov Institute of Oceanology of Russian Academy of Sciences, Russia, https://orcid.org/0009-0008-6698-0386
Dmitry Glukhovets, Shirshov Institute of Oceanology of Russian Academy of Sciences, Russia
Pavel Salyuk, Il’yichev Pacific Oceanological Institute of the Far Eastern Branch of Russian Academy of Sciences, Russia
Poster Session | 1 | 2 | 3 | 4 |
Instructions | Schedule at a Glance
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