Ice-covering hydrological and hydrochemical investigations on the Lena River delta

Irina Fedorova, Roman Zdorovennov, Galina Zdorovennova, Aleksei Aksenov

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Abstract

The study reported here was conducted on the channels of the Lena River delta in April 2019. The water temperature, specific conductivity, dissolved oxygen, PAR fluxes, and currents were measured on the cross-sections in the Olenekskaya and Bykovskaya channels, as well as in the main channel of the Lena River near Samoilov Island using the multiparameter probes CTD-48M, CTD-90M and RBR-Concerto. An analysis of the data showed that the water in the channels of the Lena River delta in winter is well saturated with oxygen (4.9-6.3 ml/l), has a very low temperature (from-0.1°C to +0.8°C). The specific conductivity of water Lena River delta channels changed from 460 to 530)S/cm. A thick layer of snow 0.1-0.5 m with an ice thickness of more than 1.5 m prevents the penetration of solar radiation into the subglacial layer, where the PAR fluxes does not exceed 10 μmol/m 2s. Current velocities reached 20-25 cm/s in the Bykovskaya channel, in Olenekskaya channel-5-11 cm/s, and in the main channel-12-18 cm/s. The currents data obtained made it possible to calculate the discharge in the channels during the ice-period.

Translated title of the contributionПодледные гидрологические и гидрохимические исследования в дельте р.Лены
Original languageEnglish
Title of host publicationIV Vinogradov Conference “Hydrology: from Learning to Worldview” in Memory of Outstanding Russian Hydrologist Yury Vinogradov
Number of pages6
Volume163
DOIs
StatePublished - 17 Apr 2020
EventIV Vinogradov Conference Hydrology: from Learning to Worldview: In Memory of Outstanding Russian Hydrologist Yury Vinogradov - Санкт-Петербург, Russian Federation
Duration: 20 Mar 202027 Mar 2020

Publication series

NameE3S Web of Conferences
PublisherEDP Sciences
ISSN (Print)2555-0403

Conference

ConferenceIV Vinogradov Conference Hydrology: from Learning to Worldview
CountryRussian Federation
CityСанкт-Петербург
Period20/03/2027/03/20

Scopus subject areas

  • Environmental Science(all)

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