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Datasets of project "Lake El´gygytgyn - Climate History of the Arctic since 3.6 Million Years"

Mostrando recursos 1 - 20 de 71

  1. High-resolution FTIRS-inferred biogeochemical properties for MIS 11c in the sediment record of core ICDP5011-1 in Lake Elgygytgyn, NE Russia

    Vogel, Hendrik; Meyer-Jacob, Carsten; Melles, Martin; Brigham-Grette, Julie; Andreev, Andrei A; Wennrich, Volker; Tarasov, Pavel E; Rosén, Peter
    Here we present a detailed multi-proxy record of the climate and environmental evolution at Lake El'gygytgyn, Far East Russian Arctic during the period 430-395 ka covering the marine isotope stage (MIS) 12/11 transition and the thermal maximum of super interglacial MIS 11c. The MIS 12/11 transition at Lake El'gygytgyn is characterized by initial warming followed by a cold reversal implying similarities to the last deglaciation. The thermal maximum of MIS 11c is characterized by full and remarkably stable interglacial conditions with mean temperatures of the warmest month (MTWM) ranging between ca. 10-15 °C; annual precipitation (PANN) ranging between ca. 300-600...

  2. High-resolution FTIRS-inferred biogeochemical properties for MIS 11c in the sediment record of core ICDP5011-1 in Lake Elgygytgyn, NE Russia

    Vogel, Hendrik; Meyer-Jacob, Carsten; Melles, Martin; Brigham-Grette, Julie; Andreev, Andrei A; Wennrich, Volker; Tarasov, Pavel E; Rosén, Peter
    Here we present a detailed multi-proxy record of the climate and environmental evolution at Lake El'gygytgyn, Far East Russian Arctic during the period 430-395 ka covering the marine isotope stage (MIS) 12/11 transition and the thermal maximum of super interglacial MIS 11c. The MIS 12/11 transition at Lake El'gygytgyn is characterized by initial warming followed by a cold reversal implying similarities to the last deglaciation. The thermal maximum of MIS 11c is characterized by full and remarkably stable interglacial conditions with mean temperatures of the warmest month (MTWM) ranging between ca. 10-15 °C; annual precipitation (PANN) ranging between ca. 300-600...

  3. FTIR-inferred biogeochemical properties for the past 3.6 Myr in the sediment record of core ICDP5011-1 in Lake Elgygytgyn, NE Russia

    Meyer-Jacob, Carsten; Vogel, Hendrik; Gebhardt, Catalina; Wennrich, Volker; Melles, Martin; Rosén, Peter
    A number of studies have shown that Fourier transform infrared spectroscopy (FTIR) can be applied to quantitatively assess lacustrine sediment constituents. In this study, we developed calibration models based on FTIR for the quantitative determination of biogenic silica (BSi; n = 420; gradient: 0.9-56.5%), total organic carbon (TOC; n = 309; gradient: 0-2.9%), and total inorganic carbon (TIC; n= 152; gradient: 0-0.4%) in a 318 m-long sediment record with a basal age of 3.6 million years from Lake El'gygytgyn, Far East Russian Arctic. The developed partial least squares (PLS) regression models yield high cross-validated (CV) R2CV = 0.86-0.91 and low...

  4. FTIR-inferred biogeochemical properties for the past 3.6 Myr in the sediment record of core ICDP5011-1 in Lake Elgygytgyn, NE Russia

    Meyer-Jacob, Carsten; Vogel, Hendrik; Gebhardt, Catalina; Wennrich, Volker; Melles, Martin; Rosén, Peter
    A number of studies have shown that Fourier transform infrared spectroscopy (FTIR) can be applied to quantitatively assess lacustrine sediment constituents. In this study, we developed calibration models based on FTIR for the quantitative determination of biogenic silica (BSi; n = 420; gradient: 0.9-56.5%), total organic carbon (TOC; n = 309; gradient: 0-2.9%), and total inorganic carbon (TIC; n= 152; gradient: 0-0.4%) in a 318 m-long sediment record with a basal age of 3.6 million years from Lake El'gygytgyn, Far East Russian Arctic. The developed partial least squares (PLS) regression models yield high cross-validated (CV) R2CV = 0.86-0.91 and low...

  5. Ground ice hydrochemical composition of permafrost core ICDP5011-3

    Schwamborn, Georg; Meyer, Hanno; Schirrmeister, Lutz; Fedorov, Grigory B
    The continuous sediment record from Lake El'gygytgyn in the northeastern Eurasian Arctic spans the last 3.6 Ma and for much of this time permafrost dynamics and lake level changes have likely played a crucial role for sediment delivery to the lake. Changes in the ground-ice hydrochemical composition (d18O, dD, pH, electrical conductivity, Na+, Mg2+, Ca2+, K+, HCO3-, Cl-, SO4-) of a 141 m long permafrost record from the western crater plain are examined to reconstruct repeated periods of freeze and thaw at the lake edge. Stable water isotope and major ion records of ground ice in the permafrost reflect both...

  6. Ground ice hydrochemical composition of permafrost core ICDP5011-3

    Schwamborn, Georg; Meyer, Hanno; Schirrmeister, Lutz; Fedorov, Grigory B
    The continuous sediment record from Lake El'gygytgyn in the northeastern Eurasian Arctic spans the last 3.6 Ma and for much of this time permafrost dynamics and lake level changes have likely played a crucial role for sediment delivery to the lake. Changes in the ground-ice hydrochemical composition (d18O, dD, pH, electrical conductivity, Na+, Mg2+, Ca2+, K+, HCO3-, Cl-, SO4-) of a 141 m long permafrost record from the western crater plain are examined to reconstruct repeated periods of freeze and thaw at the lake edge. Stable water isotope and major ion records of ground ice in the permafrost reflect both...

  7. Granulometry, mineralogy and organic matter content of permafrost core 5011-3

    Schwamborn, Georg; Fedorov, Grigory B; Ostanin, Nikifor; Schirrmeister, Lutz; Andreev, Andrei A; El'gygytgyn Scientific Party
    The combination of permafrost history and dynamics, lake level changes and the tectonical framework is considered to play a crucial role for sediment delivery to El'gygytgyn Crater Lake, NE Russian Arctic. The purpose of this study is to propose a depositional framework based on analyses of the core strata from the lake margin and historical reconstructions from various studies at the site. A sedimentological program has been conducted using frozen core samples from the 141.5 m long El'gygytgyn 5011-3 permafrost well. The drill site is located in sedimentary permafrost west of the lake that partly fills the El'gygytgyn Crater. The...

  8. Granulometry, mineralogy and organic matter content of permafrost core 5011-3

    Schwamborn, Georg; Fedorov, Grigory B; Ostanin, Nikifor; Schirrmeister, Lutz; Andreev, Andrei A; El'gygytgyn Scientific Party
    The combination of permafrost history and dynamics, lake level changes and the tectonical framework is considered to play a crucial role for sediment delivery to El'gygytgyn Crater Lake, NE Russian Arctic. The purpose of this study is to propose a depositional framework based on analyses of the core strata from the lake margin and historical reconstructions from various studies at the site. A sedimentological program has been conducted using frozen core samples from the 141.5 m long El'gygytgyn 5011-3 permafrost well. The drill site is located in sedimentary permafrost west of the lake that partly fills the El'gygytgyn Crater. The...

  9. (Fig. 6) Grain size composition of permafrost core ICDP5011-3

    Schwamborn, Georg; Fedorov, Grigory B; Ostanin, Nikifor; Schirrmeister, Lutz; Andreev, Andrei A; El'gygytgyn Scientific Party

  10. (Fig. 6) Grain size composition of permafrost core ICDP5011-3

    Schwamborn, Georg; Fedorov, Grigory B; Ostanin, Nikifor; Schirrmeister, Lutz; Andreev, Andrei A; El'gygytgyn Scientific Party

  11. (Fig. 6) Grain size composition of permafrost core ICDP5011-3

    Schwamborn, Georg; Fedorov, Grigory B; Ostanin, Nikifor; Schirrmeister, Lutz; Andreev, Andrei A; El'gygytgyn Scientific Party

  12. (Fig. 4) Content of total organic carbon in permafrost core ICDP5011-3

    Schwamborn, Georg; Fedorov, Grigory B; Ostanin, Nikifor; Schirrmeister, Lutz; Andreev, Andrei A; El'gygytgyn Scientific Party

  13. (Fig. 4) Content of total organic carbon in permafrost core ICDP5011-3

    Schwamborn, Georg; Fedorov, Grigory B; Ostanin, Nikifor; Schirrmeister, Lutz; Andreev, Andrei A; El'gygytgyn Scientific Party

  14. (Fig. 4) Bulk mineralogy of permafrost core ICDP5011-3

    Schwamborn, Georg; Fedorov, Grigory B; Ostanin, Nikifor; Schirrmeister, Lutz; Andreev, Andrei A; El'gygytgyn Scientific Party

  15. (Fig. 4) Bulk mineralogy of permafrost core ICDP5011-3

    Schwamborn, Georg; Fedorov, Grigory B; Ostanin, Nikifor; Schirrmeister, Lutz; Andreev, Andrei A; El'gygytgyn Scientific Party

  16. A 3.6 Ma sedimentological, geochemical and palynological record of sediment core ICDP5011-1 in Lake Elgygytgyn, NE Russia

    Brigham-Grette, Julie; Melles, Martin; Minyuk, Pavel S; Andreev, Andrei A; Tarasov, Pavel E; DeConto, Robert M; König, Sebastian; Nowaczyk, Norbert R; Wennrich, Volker; Rosén, Peter; Haltia-Hovi, Eeva; Cook, Timothy L; Gebhardt, Catalina; Meyer-Jacob, Carsten; Snyder, Jeffrey A; Herzschuh, Ulrike
    Understanding the evolution of Arctic polar climate from the protracted warmth of the middle Pliocene into the earliest glacial cycles in the Northern Hemisphere has been hindered by the lack of continuous, highly resolved Arctic time series. Evidence from Lake El'gygytgyn, NE Arctic Russia, shows that 3.6-3.4 million years ago, summer temperatures were ~8°C warmer than today when pCO2 was ~400 ppm. Multiproxy evidence suggests extreme warmth and polar amplification during the middle Pliocene, sudden stepped cooling events during the Pliocene-Pleistocene transition, and warmer than present Arctic summers until ~2.2 Ma, after the onset of Northern Hemispheric glaciation. Our data...

  17. A 3.6 Ma sedimentological, geochemical and palynological record of sediment core ICDP5011-1 in Lake Elgygytgyn, NE Russia

    Brigham-Grette, Julie; Melles, Martin; Minyuk, Pavel S; Andreev, Andrei A; Tarasov, Pavel E; DeConto, Robert M; König, Sebastian; Nowaczyk, Norbert R; Wennrich, Volker; Rosén, Peter; Haltia-Hovi, Eeva; Cook, Timothy L; Gebhardt, Catalina; Meyer-Jacob, Carsten; Snyder, Jeffrey A; Herzschuh, Ulrike
    Understanding the evolution of Arctic polar climate from the protracted warmth of the middle Pliocene into the earliest glacial cycles in the Northern Hemisphere has been hindered by the lack of continuous, highly resolved Arctic time series. Evidence from Lake El'gygytgyn, NE Arctic Russia, shows that 3.6-3.4 million years ago, summer temperatures were ~8°C warmer than today when pCO2 was ~400 ppm. Multiproxy evidence suggests extreme warmth and polar amplification during the middle Pliocene, sudden stepped cooling events during the Pliocene-Pleistocene transition, and warmer than present Arctic summers until ~2.2 Ma, after the onset of Northern Hemispheric glaciation. Our data...

  18. Turbidites in composite profile of ICDP site 5011-1 in Lake Elgygytgyn, NE Russia

    Brigham-Grette, Julie; Melles, Martin; Minyuk, Pavel S; Andreev, Andrei A; Tarasov, Pavel E; DeConto, Robert M; König, Sebastian; Nowaczyk, Norbert R; Wennrich, Volker; Rosén, Peter; Haltia-Hovi, Eeva; Cook, Timothy L; Gebhardt, Catalina; Meyer-Jacob, Carsten; Snyder, Jeffrey A; Herzschuh, Ulrike

  19. Turbidites in composite profile of ICDP site 5011-1 in Lake Elgygytgyn, NE Russia

    Brigham-Grette, Julie; Melles, Martin; Minyuk, Pavel S; Andreev, Andrei A; Tarasov, Pavel E; DeConto, Robert M; König, Sebastian; Nowaczyk, Norbert R; Wennrich, Volker; Rosén, Peter; Haltia-Hovi, Eeva; Cook, Timothy L; Gebhardt, Catalina; Meyer-Jacob, Carsten; Snyder, Jeffrey A; Herzschuh, Ulrike

  20. Whole core and downhole logging magnetic susceptibility of ICDP site 5011-1 in Lake Elgygytgyn, NE Russia

    Brigham-Grette, Julie; Melles, Martin; Minyuk, Pavel S; Andreev, Andrei A; Tarasov, Pavel E; DeConto, Robert M; König, Sebastian; Nowaczyk, Norbert R; Wennrich, Volker; Rosén, Peter; Haltia-Hovi, Eeva; Cook, Timothy L; Gebhardt, Catalina; Meyer-Jacob, Carsten; Snyder, Jeffrey A; Herzschuh, Ulrike

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