Lagrangian fronts in the ocean |
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Authors: | S V Prants M V Budyansky M Yu Uleysky |
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Institution: | 1. Pacific Oceanological Institute, Russian Academy of Sciences, Baltiyskaya ul. 43, Vladivostok, 690041, Russia
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Abstract: | We introduce the concept of Lagrangian fronts (LFs) in the ocean and describe their importance for analyzing water mixing and transport and the specific features and differences from hydrological fronts. A method of calculating LFs in a given velocity field is proposed. Based on altimeter velocity fields from AVISO data in the northwestern Pacific, we calculate the Lagrangian synoptic maps and identify LFs of different spatial and temporal scales. Using statistical analysis of saury catches in different years according to the Goskomrybolovstvo (State Fisheries Committee of the Russian Federation), we show that LFs can serve as good indicators of places that are favorable for fishing. |
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