Ice Effect on Coast and Seabed in Baydaratskaya Bay, Kara Sea

Ogorodov, Stanislav; Arkhipov, V. V.; Kokin, Osip; Marchenko, Aleksey; Overduin, Paul; Forbes, Donald L.

doi:10.24057/2071-9388-2013-6-3-21-37

Cited by 12 publications

(7 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They retreat especially intensively as they are composed of ice-rich permafrost and the presence of ice wedges and massive ice bodies, their thawing is resulting in formation of retrogressive thaw slumps [15,36], thermoerosional niches and gullies [37,38]. Surveys of coastal dynamics in the Kara Sea region at Yugorsky Peninsula [21,39], Baydaratskaya Bay [40][41][42], and Western Yamal [25,43,44] revealed mean annual coastal erosion rates ranging from 0.5 to 2.5 m/yr, what is significant in comparison to other Arctic regions. Most of these works were based on the results of field monitoring along separate profiles, conducted for two or three decades.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of Permafrost Coasts of Baydaratskaya Bay (Kara Sea) Based on Multi-Temporal Remote Sensing Data

et al. 2018

Self Cite

View full text Add to dashboard Cite

Arctic coasts that are composed of frozen deposits are extremely sensitive to climate change and human impact. They retreat with average rates of 1–2 m per year, depending on climatic and permafrost conditions. In recent decades, retreat rates have shown a tendency to increase. In this paper, we studied the coastal dynamics of two key sites (Ural and Yamal coasts) of Baydaratskaya Bay, Kara Sea, where a gas pipeline had been constructed. Based on multi-temporal aerial and satellite imagery, we identified coastal erosion rates at several time lapses, in natural conditions and under human impact, and discussed their temporal variability. In addition to planimetric (m/yr), we calculated volumetric (m3/m/yr) retreat rates of erosional coasts using ArcticDEM. We also estimated the influence of geomorphology, lithology, and permafrost structure of the coasts on spatial variations of their dynamics. Erosional coasts of the Ural key site retreat with higher mean rates (1.2 m/yr and 8.7 m3/m/yr) as compared to the Yamal key site (0.3 m/yr and 3.7 m3/m/yr) due to their exposure to higher open sea waves, more complex lithology, higher ice content and lower coastal bluffs. Since the 1960s, coastal retreat rates have been growing on both coasts of Baydaratskaya Bay; we relate this effect with Arctic climate warming. From the 1960s to 2005, such growth was moderate, while in 2005–2016 it became rapid, which may be explained by the enhanced wave and thermal action or by the onset of industrial development. The adjacent coastal segments, originally accumulative, remained relatively stable from the 1960s to 2005. After 2005, a considerable part of them began to retreat as a result of changing weather conditions and/or increasing human impact.

show abstract

Section: Introductionmentioning

confidence: 99%

Dynamics of Permafrost Coasts of Baydaratskaya Bay (Kara Sea) Based on Multi-Temporal Remote Sensing Data

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…Sea level fluctuations are associated with tides (up to 1.1 m) and storm surges (up to 2 m). Ice scours are widespread in Baydaratskaya Bay to depths of more than 12 can be up to 2 m deep, 50 m wide and several kilometers long [5]. In shallower a scouring processes are also active, but wind waves destroy their evidence during summer and autumn storms.…”

Section: Study Areamentioning

confidence: 99%

“…Ice scours (ice gouges, ice ploughmarks) are widespread on the bottom of high-and mid-latitude seas and big freezing lakes at different water depths up to 500 m [1][2][3][4][5][6][7][8][9][10][11][12] and occasionally up to 1200 m [13,14]. They are formed when the keels of floating icebergs or sea ice hummocks (pressure ridges) collide with unlithified seabed sediments.…”

Section: Introductionmentioning

confidence: 99%

Pb-210 Dating of Ice Scour in the Kara Sea

Kokin

Usyagina

Мещеряков

et al. 2023

JMSE

Self Cite

View full text Add to dashboard Cite

Ice scours are formed when the keels of floating icebergs or sea ice hummocks penetrate unlithified seabed sediments. Until now, ice scours have been divided into “relict” and “modern” according to the water depth that corresponds with the possible maximum vertical dimensions of the keels of modern floating icebergs. However, this approach does not consider climatic changes at the present sea level, which affect the maximum depth of ice keels. We present an application of 210Pb dating of the largest ice scour in the Baydaratskaya Bay area (Kara Sea), located at depths of about 28–32 m. Two sediment cores were studied; these were taken on 2 November 2021 from the R/V Akademik Nikolay Strakhov directly in the ice scour and on the “background” seabed surface, not processed via ice scouring. According to the results of 210Pb dating, the studied ice scour was formed no later than the end of the Little Ice Age. Based on the extrapolation of possible sedimentation rates prior to 1917 (0.22–0.38 cm/year), the age of the ice scour is estimated to be 1810 ± 30 AD. The mean rate of ice scour filling with 70 cm thick sediments from the moment of its formation is around 0.33 cm/year.

show abstract

“…A significant amount of the precipitation comes from July to September, accounting for 30-50% of the annual amount [30]. The wind regime represents a monsoon-like character, with the predominant winds in southerly and northerly directions in winter and summer, respectively [31,32]. The Khanovey area is comparatively warmer than the Baydaratskaya Bay area.…”

Section: Climate Conditionsmentioning

confidence: 99%

Multi-Parameter Protocol for Geocryological Test Site: A Case Study Applied for the European North of Russia

et al. 2022

View full text Add to dashboard Cite

An increase in air temperature leads to a significant transformation of the relief and landscapes of the Arctic. The rate of permafrost degradation, posing a profound change in the Arctic landscape, depends on air temperature, vegetation cover, type of soils, surface and ground waters. The existing international circumpolar programs dedicated to monitoring the temperature state of permafrost TSP (Thermal State Permafrost) and active layer thickness CALM (Circumpolar Active Layer Monitoring) are not sufficient for a comprehensive characterization of geocryological conditions. Yet, no standardized protocol exists for permafrost monitoring and related processes. Here, we propose a novel multi-parameter monitoring protocol and implement it for two sites in the European part of the Russian Arctic: the Yary site along the coast of the Baydaratskaya Bay in the Kara Sea (68.9° N) within the continuous permafrost area and the Hanovey site in the Komi Republic (67.3° N) within the discontinuous permafrost area. The protocol includes drilling boreholes, determining the composition and properties (vegetation cover and soils), snow cover measurement, geophysical imaging, active layer estimation and continuous ground temperature measurements. Ground temperature measured in 2014–2020 revealed that amplitudes of surface temperature fluctuations had no significant differences between the Yary and Hanovey sites, while that the mean annual temperatures between the areas had a considerable difference of greater than 3.0 °C. The period of the presence of the active layer changed with the year (e.g., ranging between 135 and 174 days in the Yary site), showing longer when the air temperatures in summer and the preceding winter were higher. Electrical resistivity tomography (ERT) allowed determining the permafrost distribution and active layer thicknesses. Thermometry results were consistent with our geophysical data. Analyzing the composition and properties of frozen soils helped better interpret the data of geophysical and temperature measurements. By integrating the study of the soil properties, ground temperatures, and ERT, our work allowed us to fully characterize these sites, suggesting that it helps better understand the thermal state at any other research sites in the European north of Russia. Our suggested monitoring protocol enables calibrating and verifying the numerical and analytical models of the heat transfer through the earth’s surface.

show abstract

Ice Effect on Coast and Seabed in Baydaratskaya Bay, Kara Sea

Cited by 12 publications

References 18 publications

Dynamics of Permafrost Coasts of Baydaratskaya Bay (Kara Sea) Based on Multi-Temporal Remote Sensing Data

Dynamics of Permafrost Coasts of Baydaratskaya Bay (Kara Sea) Based on Multi-Temporal Remote Sensing Data

Pb-210 Dating of Ice Scour in the Kara Sea

Multi-Parameter Protocol for Geocryological Test Site: A Case Study Applied for the European North of Russia

Contact Info

Product

Resources

About