Earth Sciences

A unique warm-water oasis in the Siberian Arctic's Chaun Bay sustained by hydrothermal groundwater discharge

A. N. Charkin, K. N. Kosobokova, et al.

Explore the unique marine ecosystem of Chaun Bay in the East Siberian Sea, where hydrothermal submarine groundwater discharge creates a warm-water community distinct from typical Siberian Arctic environments. This exciting research, conducted by Alexander N. Charkin and colleagues, reveals elevated levels of chlorophyll-a and unusual boreal species in this remarkable area.

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Abstract

Chaun Bay, in the East Siberian Sea, supports a unique marine ecosystem atypical for the Siberian Arctic. This study uses shipboard measurements (October 2020) and land-fast ice observations (April 2023) to show that hydrothermal submarine groundwater discharge (SGD) sustains these warm-water communities. SGD delivers heat, salinity, nutrients, and trace elements, creating a water mass similar to productive North Pacific waters. The bay exhibits elevated chlorophyll-a, zooplankton, and epibenthos, including boreal species unusual for the Arctic.

Publisher

Communications Earth & Environment

Published On

Jul 22, 2024

Authors

Alexander N. Charkin, Ksenia N. Kosobokova, Elizaveta A. Ershova, Vitaly L. Syomin, Glafira D. Kolbasova, Pavel Yu. Semkin, Andrey E. Leusov, Oleg V. Dudarev, Timofey A. Gulenko, Elena I. Yaroshchuk, Anatoly M. Startsev, Pavel A. Fayman, Vladislav A. Krasikov, Sergey A. Zverev, Elena A. Bessonova, Alexander S. Ulyantsev, Evgeny V. Elovsky, Daria A. Yurikova, Kirill A. Kobyakov, Olga L. Zimina, Alexandra V. Gerasimova, Peter P. Tishchenko, Alexander A. Didov

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