Stable isotope and gas properties of two climatically contrasting (Pleistocene and Holocene) ice wedges from Cape Mamontov Klyk, Laptev Sea, northern Siberia

Boereboom, Thierry; Samyn, Denis; Meyer, H.; Tison, Jean‐Louis

doi:10.5194/tc-7-31-2013

Cited by 36 publications

(68 citation statements)

References 64 publications

(79 reference statements)

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“…5) and Bol'shoy Lyakhovsky indicates that similar climate variations likely affected the Dmitry Laptev Strait region as well. Similar fluctuations within the same range of δ 18 O and δD values have also been reported for Cape Mamontov Klyk (Boereboom et al, 2013), the Bykovsky Peninsula (Meyer et al, 2002a), and Duvanny Yar (Vasil'chuk et al, 2001). A more stable MIS3 summer climate, even though with a distinct interstadial optimum around 40 cal kyr b2k was inferred from pollen data from Bol'shoy Lyakhovsky and other study sites in the Laptev Sea region (Wetterich et al, 2014).…”

Section: Relation Of Ice-wedge Palaeoclimate Information To Large-scasupporting

confidence: 60%

“…The substantial warming from the last glacial to the Holocene as captured by modelled temperatures and the NGRIP record is also found in our Dmitry Laptev Strait record as well as other regional ice-wedge stable-isotope records such as Cape Mamontov Klyk (Boereboom et al, 2013), the Lena River delta (Wetterich et al, 2008), and the Bykovsky Peninsula (Meyer et al, 2002a). The detected δ 18 O difference of about 6 ‰ between the studied Yedoma Ice Complex (MIS3) and Holocene ice wedges corresponds well to the regional pattern.…”

Section: Relation Of Ice-wedge Palaeoclimate Information To Large-scamentioning

confidence: 60%

“…6). Other regional icewedge-based reconstructions such as those from Cape Mamontov Klyk (Boereboom et al, 2013), the Lena River delta (Wetterich et al, 2008), Bykovsky Peninsula (Meyer et al, 2002a), or Duvanny Yar at the Kolyma River (Vasil'chuk et al, 2001) only date back to MIS3 or MIS4 and/or contain only single stratigraphic units (Streletskaya et al, 2015). Therefore, we additionally compare our data to the continuous NGRIP ice-core δ 18 O record from Greenland (North Greenland Ice Core Project members, 2004) with age scale GICC05modelext (Wolff et al, 2010) and climate-model output (Fig.…”

Section: Relation Of Ice-wedge Palaeoclimate Information To Large-scamentioning

confidence: 99%

“…Snowmelt is the main source of the water that enters the frost crack, quickly refreezes there due to the negative ground temperatures, and forms a vertical ice vein. Depending on climate and site-specific environmental conditions minor sources may include varying proportions of densified snow or hoar-frost accretion (St-Jean et al, 2011;Boereboom et al, 2013). The periodic repetition of frost cracking and ice-vein formation results in ice-wedge growth in width and, if synchronous to sedimentation at the surface (syngenetic ice wedges), also in height.…”

Section: Introductionmentioning

confidence: 99%

“…Selected stratigraphic units have been studied at Cape Mamontov Klyk (Boereboom et al, 2013), at Bol'shoy Lyakhovsky Island (Wetterich et al, , 2014, at the Oyogos Yar Coast , and in the Lena River delta (Schirrmeister et al, 2003b(Schirrmeister et al, , 2011aWetterich et al, 2008;Meyer et al, 2015). To verify the obtained palaeoclimate results on different timescales and to assess their spatial and temporal representativity, additional extensive groundice stable-isotope records are needed.…”

Section: Introductionmentioning

confidence: 99%

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Ground-ice stable isotopes and cryostratigraphy reflect late Quaternary palaeoclimate in the Northeast Siberian Arctic (Oyogos Yar coast, Dmitry Laptev Strait)

et al. 2017

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Abstract.To reconstruct palaeoclimate and palaeoenvironmental conditions in the northeast Siberian Arctic, we studied late Quaternary permafrost at the Oyogos Yar coast (Dmitry Laptev Strait). New infrared-stimulated luminescence ages for distinctive floodplain deposits of the Kuchchugui Suite (112.5 ± 9.6 kyr) and thermokarst-lake deposits of the Krest Yuryakh Suite (102.4 ± 9.7 kyr), respectively, provide new substantial geochronological data and shed light on the landscape history of the Dmitry Laptev Strait region during Marine Isotope Stage (MIS) 5. Groundice stable-isotope data are presented together with cryolithological information for eight cryostratigraphic units and are complemented by data from nearby Bol'shoy Lyakhovsky Island. Our combined record of ice-wedge stable isotopes as a proxy for past winter climate conditions covers about 200 000 years and is supplemented by stable isotopes of pore and segregated ice which reflect annual climate conditions overprinted by freezing processes. Our ice-wedge stable-isotope data indicate substantial variations in northeast Siberian Arctic winter climate conditions during the late Quaternary, in particular between glacial and interglacial times but also over the last millennia to centuries. Stable isotope values of ice complex ice wedges indicate cold to very cold winter temperatures about 200 kyr ago (MIS7), very cold winter conditions about 100 kyr ago (MIS5), very cold to moderate winter conditions between about 60 and 30 kyr ago, and extremely cold winter temperatures during the Last Glacial Maximum (MIS2). Much warmer winter conditions are reflected by extensive thermokarst development during MIS5c and by Holocene ice-wedge stable isotopes. Modern ice-wedge stable isotopes are most enriched and testify to the recent winter warming in the Arctic. Hence, ice-wedgebased reconstructions of changes in winter climate conditions add substantial information to those derived from paleoecological proxies stored in permafrost and allow a distinction between seasonal trends of past climate dynamics. Future progress in ice-wedge dating and an improved temporal resolution of ice-wedge-derived climate information may help to fully explore the palaeoclimatic potential of ice wedges.

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Section: Relation Of Ice-wedge Palaeoclimate Information To Large-scasupporting

confidence: 60%

Section: Relation Of Ice-wedge Palaeoclimate Information To Large-scamentioning

confidence: 60%

Section: Relation Of Ice-wedge Palaeoclimate Information To Large-scamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ground-ice stable isotopes and cryostratigraphy reflect late Quaternary palaeoclimate in the Northeast Siberian Arctic (Oyogos Yar coast, Dmitry Laptev Strait)

et al. 2017

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Active layer hydrology in an arctic tundra ecosystem: quantifying water sources and cycling using water stable isotopes

Throckmorton

Newman

Heikoop

et al. 2016

Hydrological Processes

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Climate change and thawing permafrost in the arctic will significantly alter landscape hydro-geomorphology and the distribution of soil moisture, which will have cascading effects on climate feedbacks (CO2 and CH4), and plant and microbial communities. Fundamental processes critical to predicting active layer hydrology are not well understood. This study applied water stable isotope techniques ( 2 H and  18 O) to infer sources and mixing of active layer waters in a polygonal tundra landscape in Barrow, Alaska (USA) in August and September of 2012. Results suggested that winter precipitation did not contribute substantially to surface waters or subsurface active layer pore waters measured in August and September. Summer rain was the main source of water to the active layer, with seasonal ice-melt contributing to deeper pore waters later in the season. Surface water evaporation was evident in August from a characteristic isotopic fractionation slope ( 2 H versus  18 O). Freeze-out isotopic fractionation effects in frozen active layer samples and textural permafrost were indistinguishable from evaporation fractionation, emphasizing the importance of considering the most likely processes in water isotope studies, in systems where both evaporation and freeze-out occur in close proximity. The fractionation observed in frozen active layer ice was not observed in liquid active layer pore waters. Such a discrepancy between frozen and liquid active layer samples suggests mixing of melt water, likely due to slow melting of seasonal ice. This research provides insight into fundamental processes relating to sources and mixing of active layer waters, which should be considered in process-based fine and intermediate scale hydrologic models.

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Progress in Understanding the Dynamics, Internal Structure and Palaeoenvironmental Potential of Ice Wedges and Sand Wedges

Christiansen¹,

Matsuoka

Watanabe

2016

Permafrost & Periglacial

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A review of recent progress in understanding the dynamics, internal structure and palaeoenvironmental potential of ice wedges and sand wedges is presented, based on literature published between 2008 and 2015. Ice wedges constitute the most ice‐rich and widespread periglacial landform in permafrost lowlands. Thus, progress in understanding the processes associated with them, using a large variety of direct and indirect field and remote sensing methods, is important, particularly in a changing climate with increased potential for ice‐wedge degradation. Ice‐wedge polygons have been found to control microclimate, hydrology and greenhouse gas fluxes from permafrost. New technologies have allowed the identification of more fossil polygons, increasing their role in reconstructing periglacial conditions. Study of ice‐wedge casts, sand wedges and ice wedges has improved palaeoenvironmental reconstruction, particularly from the last glacial period and the Holocene, of changes to these landforms in both present and former permafrost areas. Polygons on Mars have recently attracted considerable attention, primarily due to increased remote sensing capabilities and even on‐site investigations, which identify ice in these landforms. Copyright © 2016 John Wiley & Sons, Ltd.

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Stable isotope and gas properties of two climatically contrasting (Pleistocene and Holocene) ice wedges from Cape Mamontov Klyk, Laptev Sea, northern Siberia

Cited by 36 publications

References 64 publications

Ground-ice stable isotopes and cryostratigraphy reflect late Quaternary palaeoclimate in the Northeast Siberian Arctic (Oyogos Yar coast, Dmitry Laptev Strait)

Ground-ice stable isotopes and cryostratigraphy reflect late Quaternary palaeoclimate in the Northeast Siberian Arctic (Oyogos Yar coast, Dmitry Laptev Strait)

Active layer hydrology in an arctic tundra ecosystem: quantifying water sources and cycling using water stable isotopes

Progress in Understanding the Dynamics, Internal Structure and Palaeoenvironmental Potential of Ice Wedges and Sand Wedges

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