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PANGAEA - Publishing Network for Geoscientific & Environmental Data (831.663 recursos)

The information system PANGAEA is operated as an Open Access library aimed at archiving, publishing and distributing georeferenced data from earth system research. The system guarantees long-term availability of its content through a commitment of the operating institutions.

Datasets with PANGAEA technical keyword @Past4Future

Mostrando recursos 1 - 20 de 460

  1. Sedimentological analysis of sediments from Amundsen and Bellingshausen Seas, Southern Ocean

    Hillenbrand, Claus-Dieter

  2. Paleoceanographic analysis of sediments from the Norwegian Sea

    Dreger, Derek
    Two ultra-high resolution IMAGES sediment cores from the SW continental slope of the Barents Sea and the Vøring Plateau are used to reconstruct fluctuations of a Barents Sea ice sheet with respect to variations in flow intensity and direction of the Norwegian Current during the last glacial-to-interglacial cycle (> 40 - 6.6 14C kyr BP equal to 45 - 7.5 cal. kyr BP). Detailed planktic AMS 14C records from both locations reveal a strong tendency towards higher ages during periods of intense meltwater and/or glacial activity on the Barents shelf. Ages in the core from the continental slope are heavily influenced...

  3. Transient simulations for present and last interglacials using a comprehensive coupled climate model CCSM3 (Community Climate System Model 3.0), links to model result files in NetCDF format

    Varma, Vidya; Prange, Matthias; Schulz, Michael
    Transient simulations are widely used in studying the past climate as they provide better comparison with any exisiting proxy data. However, multi-millennial transient simulations using coupled climate models are usually computationally very expensive. As a result several acceleration techniques are implemented when using numerical simulations to recreate past climate. In this study, we compare the results from transient simulations of the present and the last interglacial with and without acceleration of the orbital forcing, using the comprehensive coupled climate model CCSM3 (Community Climate System Model 3). Our study shows that in low-latitude regions, the simulation of long-term variations in interglacial...

  4. Clay mineral and heavy metal composition of sea-bed surface sediments and pre-Holocene sediment samples taken during POLARSTERN cruise ANT-XXIII/9

    Borchers, Andreas; Voigt, Ines; Kuhn, Gerhard; Diekmann, Bernhard
    Surface mineralogical compositions and their association to modern processes are well known from the east Atlantic and south-west Indian sectors of the Southern Ocean, but data from the interface of these areas - the Prydz Bay-Kerguelen region - is still missing. The objective of our study was to provide mineralogical data of reference samples from this region and to relate these mineralogical assemblages to hinterland geology, weathering, transport and depositional processes. Clay mineral assemblages were analysed by means of X-ray diffraction technique. Heavy mineral assemblages were determined by counting of gravity-separated grains under a polarizing microscope. Results show that by...

  5. Model - data comparison of western African rainfall evolutions during the Last Interglacial (130-115 ka)

    Govin, Aline; Varma, Vidya; Prange, Matthias
    This dataset characterizes the evolution of western African precipitation indicated by marine sediment geochemical records in comparison to transient simulations using CCSM3 global climate model throughout the Last Interglacial (130-115 ka). It contains (1) defined tie-points (age models), newly published stable isotopes of benthic foraminifera and Al/Si log-ratios of eight marine sediment cores from the western African margin and (2) annual and seasonal rainfall anomalies (relative to pre-industrial values) for six characteristic latitudinal bands in western Africa simulated by CCSM3 (two transient simulations: one non-accelerated and one accelerated experiment).

  6. 22. Western African annual rainfall simulated by the CCSM3 global climate model during the Last Interglacial: non-accelerated transient simulation (130-120 ka)

    Govin, Aline; Varma, Vidya; Prange, Matthias

  7. 23. Western African annual and seasonal rainfall anomalies simulated by the CCSM3 global climate model during the Last Interglacial: accelerated transient simulation (130-115 ka)

    Govin, Aline; Varma, Vidya; Prange, Matthias

  8. 20. Last Interglacial benthic foraminiferal stable isotopes from sediment core GeoB1028-5

    Govin, Aline; Varma, Vidya; Prange, Matthias

  9. 17. Last Interglacial benthic foraminiferal stable isotopes from sediment core GeoB1016-3

    Govin, Aline; Varma, Vidya; Prange, Matthias

  10. 14. Last Interglacial benthic foraminiferal stable isotopes from sediment core GeoB1008-3

    Govin, Aline; Varma, Vidya; Prange, Matthias

  11. 5. Last Interglacial benthic foraminiferal stable isotopes from sediment core GeoB9506-1

    Mulitza, Stefan

  12. 2. Last Interglacial benthic foraminiferal stable isotopes from sediment core GeoB7925-1

    Govin, Aline; Varma, Vidya; Prange, Matthias

  13. 10. Last Interglacial Al/Si log-ratio data from sediment core GeoB9528-3

    Govin, Aline; Varma, Vidya; Prange, Matthias

  14. 8. Last Interglacial Al/Si log-ratio data from sediment core GeoB9516-5

    Govin, Aline; Varma, Vidya; Prange, Matthias

  15. 3. Last Interglacial Al/Si log-ratio data from sediment core GeoB7925-1

    Govin, Aline; Varma, Vidya; Prange, Matthias

  16. 12. Last Interglacial Al/Si log-ratio data from sediment core GeoB4901-8

    Govin, Aline; Varma, Vidya; Prange, Matthias

  17. 21. Last Interglacial Al/Si log-ratio data from sediment core GeoB1028-5

    Govin, Aline; Varma, Vidya; Prange, Matthias

  18. 18. Last Interglacial Al/Si log-ratio data from sediment core GeoB1016-3

    Govin, Aline; Varma, Vidya; Prange, Matthias

  19. 15. Last Interglacial Al/Si log-ratio data from sediment core GeoB1008-3

    Govin, Aline; Varma, Vidya; Prange, Matthias

  20. 6. Last Interglacial Al/Si log-ratio data from sediment core GeoB9506-1

    Govin, Aline; Varma, Vidya; Prange, Matthias

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