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  • Ross ice shelf oxygen isotopes and West Antarctic climate history
  • Antarctique ; Barrière de Ross ; Carotte de glace ; Glace ; Géographie des régions polaires ; Isotopes de l'oxygène ; Paléoclimatologie ; Quaternaire supérieur ; Ross Ice Shelf
  • The Ross Ice Shelf oxygen isotopic profile at station J-9 covers at least the last 30,000 yr.
  • Dating of Greenland ice cores by flow models, isotopes, volcanic debris, and continental dust
  • Datation ; Glace ; Groenland ; Géochronologie ; Géographie des régions polaires ; Isotope ; Stratigraphie ; Variabilité
  • notre ère), à partir des retombées de cendre volcanique soluble. Les variations saisonnières en micro-particules ou en isotopes stables sont mesurées pour trois carottes de 400m de longueur, venant du Groenland. Description des techniques utilisées pour
  • rétablir la forme des profils d'isotopes lourds. Evaluation de l'erreur absolue de datation.
  • In these cores, climatic information is mostly derived from the isotopic profiles (deuterium/hydrogen and/or 18O/16O ratios) from which surface temperature and, more indirectly, precipitation rate can be estimated. The time scales have been examined
  • in detail and a new 40,000 yr chronology for the Dome C core adopted. Special emphasis is placed on the link between the concentration of 10Be and past accumulation changes and on the use of peaks in the concentration of this cosmogenic isotope
  • AMS-14C ages measured in deep sea cores from the Southern Ocean : implications for sedimentation rates during isotope stage 2
  • Accumulation, ablation and oxygen isotope variations on the Queen Elizabeth Islands ice caps, Canada
  • Izotopno-kislorodnaja diagramma povtorno-zil'nyh l'dov Zapadnoj Sibiri, ee radiologiceskij vozrast i paleogeokriologiceskaja interpretacija (Diagramme de l'isotope d'oxygène des glaces filoniennes en Sibérie occidentale, âge radiologique et
  • Evidence from terrestrial sections, ice cores, and marine cores are reviewed and used to develop a scenario for environmental change in the area of the extreme northwest North Atlantic during marine isotope stages 5 and 4.
  • that the Beardmore drift limit is late Wisconsin (isotope stage 2) and the Meyer limit Stage 6 in age. The Beardmore and Meyer drift sheets represent thickening of the Beardmore Glacier in response to Ross Ice Shelf grounding during the last two global glaciations
  • Glacier have thickened considerably during the last two global glaciations (late Wisconsin and marine isotope stage 6). The effect of ice-shelf grounding probably was the major control of these changes of Hatherton Glacier. Holocene ice-surface lowering
  • Antarctique ; Carotte de glace ; Cristallographie ; Glace ; Glaciologie ; Géographie des régions polaires ; Isotope ; Paléoclimatologie ; Variation climatique