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Datasets of project "Remote Sensing of Sea Ice Properties"

Mostrando recursos 1 - 20 de 344

  1. Ground-based electromagnetic (EM) and drill-hole ice and snow thickness and melt pond depth measurements during Polarstern cruise ARK-IX/4, ARK-XI/1, and ARK-XII

    Haas, Christian; Gerland, Sebastian; Eicken, Hajo; Miller, Heinz
    Drillhole-determined sea-ice thickness was compared with values derived remotely using a portable small-offset loop-loop steady state electromagnetic (EM) induction device during expeditions to Fram Strait and the Siberian Arctic, under typical winter and summer conditions. Simple empirical transformation equations are derived to convert measured apparent conductivity into ice thickness. Despite the extreme seasonal differences in sea-ice properties as revealed by ice core analysis, the transformation equations vary little for winter and summer. Thus, the EM induction technique operated on the ice surface in the horizontal dipole mode yields accurate results within 5 to 10% of the drillhole determined thickness over...

  2. Ground-based electromagnetic (EM) and drill-hole ice and snow thickness measurements during Polarstern cruise ARK-XVII/2 in 2001

    Haas, Christian
    Late-summer thickness distributions of large ice floes in the Transpolar Drift between Svalbard and the North Pole in 1991, 1996, 1998, and 2001 are compared. They have been derived from drilling and electromagnetic (EM) sounding. Results show a strong interannual variability, with significantly reduced thickness in 1998 and 2001. The mean thickness decreased by 22.5% from 3.11 m in 1991 to 2.41 m in 2001, and the modal thickness by 22% from 2.50 m in 1991 to 1.95 m in 2001. Since modal thickness represents the thickness of level ice, the observed thinning reflects changes in thermodynamic conditions. Together with...

  3. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200109200752

    Haas, Christian

  4. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200109200742

    Haas, Christian

  5. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200109081530

    Haas, Christian

  6. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200109081519

    Haas, Christian

  7. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200109081505

    Haas, Christian

  8. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200109051246

    Haas, Christian

  9. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200109051235

    Haas, Christian

  10. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200109051222

    Haas, Christian

  11. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200109030636

    Haas, Christian

  12. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200109030625

    Haas, Christian

  13. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200109030615

    Haas, Christian

  14. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200108311100

    Haas, Christian

  15. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200108311050

    Haas, Christian

  16. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200108311036

    Haas, Christian

  17. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200108291325

    Haas, Christian

  18. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200108291314

    Haas, Christian

  19. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200108291304

    Haas, Christian

  20. Laser profiles of sea ice surface roughness during Polarstern cruise ARK-XVII/2 in 2001 from flight Ark17_200108291256

    Haas, Christian

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