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:10.15356/2071-9388_03v06_2013_02

Cited by 7 publications

(19 citation statements)

References 12 publications

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“…The Nord-Stream gas pipeline was constructed across Baydaratskaya Bay in 2011 (Ogorodov et al, 2013), making landfall along the west coast, approximately 85 km southeast of Ust-Kara (68°51' N, 66°47' E). The threat of coastal erosion to the pipe-line landfall provides motivation for understanding the processes at work there.…”

Section: Site Descriptionmentioning

confidence: 99%

“…Seabed permafrost may extend to a depth of at least 25 m (Osterkamp & Romanovsky, 1997). The seabed slope is shallow, between 0.004-0.01 in the nearshore (Kamalov et al, 2006;Bogorodskii et al, 2010), and the maximum depth in the bay is approximately 23 m (Ogorodov et al, 2013).…”

Section: Site Descriptionmentioning

confidence: 99%

“…The length of the ice-free season on the West Kara Sea has extended by approximately 34 days between 1979-2006(Rodrigues, 2008. Seabed gouging due to ice ridges and icebergs has been observed even in the deepest portions of the bay (23 m), and the nearshore zone is also subject to mechanical action by landfast ice (Ogorodov et al, 2013).…”

Section: Site Descriptionmentioning

confidence: 99%

“…Historical rates of recession at the site vary from 0.5-1.5 m/year (Leont'yev & Rachold, 2005), and up to 5-10 m/year for locations with significant ground ice deposits (Ogorodov et al, 2013). Both thermodenudation and thermoabrasion processes act on the site to varying degrees.…”

Section: Site Descriptionmentioning

confidence: 99%

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Thermomechanical erosion modelling of Baydaratskaya Bay, Russia with COSMOS

Pearson

Lubbad

et al. 2016

Scour and Erosion

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Rapid coastal erosion threatens Arctic coastal infrastructure, including communities and industrial installations. Erosion of permafrost depends on numerous processes, including thermal and mechanical behaviour of frozen and unfrozen soil, nearshore hydrodynamics, atmospheric forcing, and the presence of sea ice. The quantification and numerical modelling of these processes is essential to predicting Arctic coastal erosion. This paper presents a case study of Baydaratskaya Bay, Russia, using the COSMOS numerical model to predict thermal-mechanical erosion. In particular, this study focuses on thermoabrasional rather than thermodenudational processes. A field dataset of onshore thermal and mechanical soil characteristics was supplemented by sources from the literature to serve as input for the model. A detailed sensitivity analysis has been conducted to determine the influence of key parameters on coastal erosion rates at the study site. This case study highlights the need for expanded data collection on Arctic coastlines and provides direction for future investigations.

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Section: Site Descriptionmentioning

confidence: 99%

Section: Site Descriptionmentioning

confidence: 99%

Section: Site Descriptionmentioning

confidence: 99%

Section: Site Descriptionmentioning

confidence: 99%

See 2 more Smart Citations

Thermomechanical erosion modelling of Baydaratskaya Bay, Russia with COSMOS

Pearson

Lubbad

et al. 2016

Scour and Erosion

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“…Threats of coastal erosion to pipelines have encouraged an understanding of the processes of erosion in the Kara Sea. Studies have shown that mean annual rates of coastal erosion have ranged between 0.2 and 2.0 m/yr in most of the Kara Sea coasts (e.g., ). It has also been shown that thermodenudation and the action of slope processes alone can contribute up to 0.4 m/yr coastal retreat in the Kara Sea coasts .…”

Section: Introductionmentioning

confidence: 99%

Cliff retreat of permafrost coast in south‐west Baydaratskaya Bay, Kara Sea, during 2005–2016

Исаев

Koshurnikov

Pogorelov

et al. 2019

Permafrost & Periglacial

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Recent years of increasing air temperature in the Arctic have led to a significant increase in the rate of retreat of permafrost coast, which has threatened livelihoods and infrastructure in these areas. The Kara Sea hosts more than 25% of the total Arctic coastline. However, little is known about how coastal erosion in the Kara Sea may have changed through time, and the climatic and environmental drivers remain unclear. Here we study coastal dynamics along a 4-km stretch of permafrost and sea-ice-affected coastline in south-west Baydaratskaya Bay of the Kara Sea, western Siberia, between 2005 and 2016, by using handheld differential GPS mapping and satellite imagery.We identified temporal and spatial variations in the retreat rates, ranging between 1.0 (+0.1/−0.6) and 1.9 (+0.7/−1.3) m/yr over the studied coastline during 2005-2016. We also made ground temperature measurements, subsurface resistivity measurements and estimates of wave energy flux of wind-driven ocean waves, to investigate the dominant climatic factors influencing the observed retreat rates through time. We found that wind-driven wave activity during sea-ice-free days influences the magnitude of coastal retreat in the study area, while recent temperature rise has contributed less to enhancing coastal retreat during the study period. This suggests that the amount of eroded sediment and the associated release of nutrient to the nearshore zone are controlled by the magnitude of wave activity, which may influence infrastructure along the permafrost coast and marine ecosystems in the proximal ocean.

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The ‘interior’ shelves of the Arctic Ocean: Physical oceanographic setting, climatology and effects of sea-ice retreat on cross-shelf exchange

Williams

Carmack

2015

Progress in Oceanography

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

Cited by 7 publications

References 12 publications

Thermomechanical erosion modelling of Baydaratskaya Bay, Russia with COSMOS

Thermomechanical erosion modelling of Baydaratskaya Bay, Russia with COSMOS

Cliff retreat of permafrost coast in south‐west Baydaratskaya Bay, Kara Sea, during 2005–2016

The ‘interior’ shelves of the Arctic Ocean: Physical oceanographic setting, climatology and effects of sea-ice retreat on cross-shelf exchange

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