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Your search keyword '"interstadial"' showing total 4 results
Start Over Descriptor "interstadial" Publisher copernicus gmbh
4 results on '"interstadial"'

1. Gedanken zur Lößfrage

Author

Fritz Weidenbach

Subjects
551.7, glazial, rißmoräne, stratigraphie, kalkgehalt, würmeiszeit, lcsh:QE1-996.5, VAR 000, löß, würmmoräne, schotterterrasse, kaltzeit, lcsh:Geology, rißeiszeit, morphologie, schotterflure, Glazialgeologie, interstadial, würmlöß, gestein, gesteinsstaub, Geology
Published
1952

2. Das Vechelder Interstadial

Author

Willi Selle

Subjects
551.7, birkenzeit, lcsh:QE1-996.5, kiefernzeit, vegetationsgeschichte, pollendiagramm, VAR 000, pollenanalyse, vechelde, lcsh:Geology, torf, sediment, Glazialgeologie, torfbank, bruchwaldtorf, braunschweig, klima, interstadial, braunmoostorf
Abstract

Bei Vechelde, Landkreis Braunschweig, wurde in einer Tiefe von 9,93 m eine 0,65 m mächtige Torfbank erbohrt. Die Pollenanalyse ergab, daß die Torfe während eines Interstadials zur Ablagerung kamen. Die Vegetationsgeschichte gliedert sich in eine Birken- und in eine Kiefernzeit; die Sedimente bestehen aus Bruchwald- und Braunmoostorfen. Das subarktische Klima besaß eine atlantische Tönung. Die zeitliche Einordnung des Interstadials war nicht möglich, da weder die stratigraphischen Verhältnisse eine Klärung brachten noch die Frage mit Hilfe der Pollenanalyse wegen des geringen Vergleichsmaterials gelöst werden konnte., research

Published
1954

4. High-resolution glacial and deglacial record of atmospheric methane by continuous-flow and laser spectrometer analysis along the NEEM ice core

Author

Xavier Faïn, O. Pascual, Logan Mitchell, D. Baslev-Clausen, Edward J. Brook, Jean Rosen, Jérôme A Chappellaz, Daniele Romanini, James E. Lee, Thomas Blunier, Simon Schüpbach, R. Dallmayr, Christopher Stowasser, Laboratoire de glaciologie et géophysique de l'environnement (LGGE), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS), Centre for Ice and Climate [Copenhagen], Niels Bohr Institute [Copenhagen] (NBI), Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU)-Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU), Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] (LIPhy), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Joseph Fourier - Grenoble 1 (UJF), Archéologies, Cultures et Sociétés (ACS), Ministère de la Culture et de la Communication (MCC)-Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Climate and Environmental Physics [Bern] (CEP), Physikalisches Institut [Bern], Universität Bern [Bern]-Universität Bern [Bern], Laboratoire de glaciologie et géophysique de l'environnement ( LGGE ), Observatoire des Sciences de l'Univers de Grenoble ( OSUG ), Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ) -Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ) -Centre National de la Recherche Scientifique ( CNRS ), Niels Bohr Institute ( NBI ) -University of Copenhagen ( KU ), Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] ( LIPhy ), Université Joseph Fourier - Grenoble 1 ( UJF ) -Centre National de la Recherche Scientifique ( CNRS ), Archéologies, Cultures et Sociétés ( ACS ), Ministère de la Culture et de la Communication ( MCC ) -Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Climate and Environmental Physics [Bern], University of Bern, Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Oregon State University (OSU), and The publication of this article isfinanced by CNRS-INSU

Subjects
Marine isotope stage, 010504 meteorology & atmospheric sciences, 530 Physics, lcsh:Environmental protection, Stratigraphy, Greenland Ice Sheet, Greenland, 010502 geochemistry & geophysics, Atmospheric sciences, deglaciation, 01 natural sciences, Proxy (climate), Methane, spectrometry, chemistry.chemical_compound, Arctic, lcsh:Environmental pollution, Ice core, glacial environment, interstadial, lcsh:TD169-171.8, Glacial period, Stadial, Dansgaard-Oeschger cycle, lcsh:Environmental sciences, 0105 earth and related environmental sciences, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], lcsh:GE1-350, Global and Planetary Change, Eemian, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], Atmospheric methane, methane, Paleontology, resolution, chemistry, [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology, 13. Climate action, Climatology, dissolved oxygen, lcsh:TD172-193.5, ice core, Geology
Abstract

The Greenland NEEM (North Greenland Eemian Ice Drilling) operation in 2010 provided the first opportunity to combine trace-gas measurements by laser spectroscopic instruments and continuous-flow analysis along a freshly drilled ice core in a field-based setting. We present the resulting atmospheric methane (CH4) record covering the time period from 107.7 to 9.5 ka b2k (thousand years before 2000 AD). Companion discrete CH4 measurements are required to transfer the laser spectroscopic data from a relative to an absolute scale. However, even on a relative scale, the high-resolution CH4 data set significantly improves our knowledge of past atmospheric methane concentration changes. New significant sub-millennial-scale features appear during interstadials and stadials, generally associated with similar changes in water isotopic ratios of the ice, a proxy for local temperature. In addition to the midpoint of Dansgaard–Oeschger (D/O) CH4 transitions usually used for cross-dating, sharp definition of the start and end of these events brings precise depth markers (with ±20 cm uncertainty) for further cross-dating with other palaeo- or ice core records, e.g. speleothems. The method also provides an estimate of CH4 rates of change. The onsets of D/O events in the methane signal show a more rapid rate of change than their endings. The rate of CH4 increase associated with the onsets of D/O events progressively declines from 1.7 to 0.6 ppbv yr−1 in the course of marine isotope stage 3. The largest observed rate of increase takes place at the onset of D/O event #21 and reaches 2.5 ppbv yr−1.

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