Alkanes in Quaternary deposits of the Laptev Sea

Romankevich, E. A.; Vetrov, A. A.; Belyaev, N. A.; Сергиенко, В. И.; Semiletov, I. P.; Sukhoverkhov, S. V.; Bratskaya, Svetlana; Prokuda, N. A.; Ulyantsev, A. S.

doi:10.1134/s1028334x17010093

Cited by 8 publications

(9 citation statements)

References 6 publications

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“…We here compare our data with other cores from the area, e.g., Cheverev et al [7], as well as with data from Ulyantsev et al [58][59][60][61], Romankevich et al [38] and Drozdova et al [9] for the 1D-14 and 5D-13 boreholes. In Cheverev et al [7] the general stratigraphy with taberal, thermokarst lake, and lagoonal deposits is comparable.…”

Section: Discussionmentioning

confidence: 59%

“…The median grain size values of our core Iv-99 are clearly smaller compared to the nine values between ca. 200 and 400 µm from the upper segment in core 1D-14 from Ulyantsev et al [60] and Romakevich et al [38]. The TOC/TN ratios have a wider variation as shown in the few data from the upper core segment of 1D-14 (TOC/ CN < ca.…”

Section: Discussionmentioning

confidence: 93%

“…The ionic composition of dissolvable material of the same core using water extracts was studied by Ulyantsev et al [62]. In addition, biomarker studies were performed by Ulyantsev et al [58], Drozdova et al [9] and Romankevich et al [38]. As references to subsea permafrost cores, Shakhova et al [47] presented temperature curves and volumetric ice contents from both cores and Shakhova et al [48] observed methane fluxes of 5-24 g −2 day −1 in the Ivashkina Lagoon, which were emitted from 17 bubble seeps and recorded for 36 h using portable single-beam sonar and averaged over the total area of 3000 m 2 .…”

Section: Introductionmentioning

confidence: 99%

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Sediment characteristics of a thermokarst lagoon in the northeastern Siberian Arctic (Ivashkina Lagoon, Bykovsky Peninsula)

Schirrmeister

Grigoriev

Strauß

et al. 2018

Arktos

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Lagoon development in ice-rich permafrost environments such as the Alaskan Beaufort Sea coastline and the Yedoma coastlines of northern Siberia represents a key mechanism of marine inundation of permafrost along the Arctic coastal plains. Here we show lithological, geochronological, and geochemical data from a core drilled in 1999 in Ivashkina Lagoon on the Bykovsky Peninsula in northeastern Siberia. This study extends previous studies of the Ivashkina Lagoon, and provides a first dated geochronological context for sedimentation and lithological characteristics. In addition, we report ground temperature measurements from different borehole sites in and around the lagoon to support our analysis of the thermokarst lagoon environment. Furthermore, a change detection study was carried out using historical aerial photography and modern satellite imagery for the 1982-2016 period. Several stages of landscape dynamics were reconstructed, starting with an initial Yedoma Ice Complex that covered the area during the late Pleistocene and which was locally thawed by thermokarst lake development during the Late Glacial with subsequent lacustrine sedimentation. A final stage completed the landscape dynamics during the last few hundreds of years. This stage was characterized by lake drainage and lagoon development, including strong reworking of surface sediments. By extrapolating the organic carbon data from Ivashkina Lagoon to the lagoons of the Bykovsky Peninsula, we estimate that lagoons contain 1.68 ± 0.04 Mt of organic carbon in their upper 6 m.

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Section: Discussionmentioning

confidence: 59%

Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Sediment characteristics of a thermokarst lagoon in the northeastern Siberian Arctic (Ivashkina Lagoon, Bykovsky Peninsula)

Schirrmeister

Grigoriev

Strauß

et al. 2018

Arktos

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“…Previous permafrost research on the Bykovsky Peninsula included cryostratigraphical and cryolithological research on Yedoma and thermokarst-affected deposits (Kunitsky, 1989;Slagoda, 1993;Schirrmeister et al, 2002aSchirrmeister et al, ,b, 2018Slagoda, 2004Slagoda, , 2005Grosse et al, 2007;Romankevich et al, 2017;Ulyantsev et al, 2017). The total organic carbon (TOC) content of Yedoma deposits on the east coast of the Bykovsky Peninsula (Mamontovy Khayata) ranges from 2 to 14 wt%, whereas Holocene cover deposits on top of the Yedoma have a TOC between 2 and 27 wt% (Schirrmeister et al, 2002a).…”

Section: Study Areamentioning

confidence: 99%

“…n-C 23 and n-C 25 are predominant in aquatic macrophytes and Sphagnum mosses (Ficken et al, 1998;Bingham et al, 2010;Bush and McInerney, 2013), n-C 27 and n-C 29 are mainly produced by trees and shrubs, and n-C 31 and n-C 33 mostly derive from grasses and herbs (Zech et al, 2009;Schäfer et al, 2016). Very few comparable studies were carried out for talik or taberal sediments (Romankevich et al, 2017;Ulyantsev et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

n-Alkane Characteristics of Thawed Permafrost Deposits Below a Thermokarst Lake on Bykovsky Peninsula, Northeastern Siberia

Jongejans

Mangelsdorf

Schirrmeister

et al. 2020

Front. Environ. Sci.

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Rapid permafrost thaw by thermokarst mobilizes previously frozen organic matter (OM) down to tens of meters deep within decades to centuries, leading to microbial degradation and greenhouse gas release. Late Pleistocene ice-rich Yedoma deposits that thaw underneath thermokarst lakes and refreeze after lake drainage are called taberal sediments. Although widespread, these have not been the subject of many studies. To study OM characteristics and degradability in thawed Yedoma, we obtained a 31.5 m long core from beneath a thermokarst lake on the Bykovsky Peninsula, northeastern Siberia. We reported radiocarbon ages, biogeochemical parameters [organic carbon (OC) content and bulk carbon isotopes] and n-alkane distributions. We found the most degraded OM in frozen, fluvial sediments at the bottom of the core, as indicated by the lowest n-alkane odd-over-even predominance (OEP; 2.2). Above this, the thawed Yedoma sediments had an n-alkane distribution typical of emergent vegetation, suggesting a landscape dominated by low-centered polygons. These sediments were OC poor (OC content: 0.8 wt%, 60% of samples < 0.1 wt%), but the OM (OEP∼5.0) was better preserved than in the fluvial sediments. The upper part of the Yedoma reflected a transition to a drier, grass dominated environment. Furthermore, this unit's OM was least degraded (OEP∼9.4). The thermokarst lake that formed about 8 cal ka BP thawed the Yedoma in the talik and deposited Holocene lake sediments containing well-preserved OM (OEP∼8.4) with the highest n-alkane concentrations (20.8 µg g −1 sediment). Old, allochthonous OM was found in the thawed Yedoma and frozen fluvial deposits. Using an n-alkane endmember model, we identified a mixed OM input in all units. In our study, the thawed Yedoma sediments contained less OC than reported in other studies for still frozen Yedoma. The Yedoma OM was more degraded compared to previous biomarker research on frozen Yedoma. However, this signal is

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Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia

Jongejans

Liebner

Knoblauch³

et al. 2021

Global Change Biology

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Permafrost thaw leads to thermokarst lake formation and talik growth tens of meters deep, enabling microbial decomposition of formerly frozen organic matter (OM). We analyzed two 17-m-long thermokarst lake sediment cores taken in Central Yakutia, Russia. One core was from an Alas lake in a Holocene thermokarst basin that underwent multiple lake generations, and the second core from a young Yedoma upland lake (formed ~70 years ago) whose sediments have thawed for the first time since deposition. This comparison provides a glance into OM fate in thawing Yedoma deposits.We analyzed total organic carbon (TOC) and dissolved organic carbon (DOC) content, n-alkane concentrations, and bacterial and archaeal membrane markers. Furthermore, we conducted 1-year-long incubations (4°C, dark) and measured anaerobic carbon dioxide (CO 2 ) and methane (CH 4 ) production. The sediments from both cores contained little TOC (0.7 ± 0.4 wt%), but DOC values were relatively high, with the highest values in the frozen Yedoma lake sediments (1620 mg L −1 ). Cumulative greenhouse gas (GHG) production after 1 year was highest in the Yedoma lake sedimentsThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Alkanes in Quaternary deposits of the Laptev Sea

Cited by 8 publications

References 6 publications

Sediment characteristics of a thermokarst lagoon in the northeastern Siberian Arctic (Ivashkina Lagoon, Bykovsky Peninsula)

Sediment characteristics of a thermokarst lagoon in the northeastern Siberian Arctic (Ivashkina Lagoon, Bykovsky Peninsula)

n-Alkane Characteristics of Thawed Permafrost Deposits Below a Thermokarst Lake on Bykovsky Peninsula, Northeastern Siberia

Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia

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