LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Hald, Morten; Dahlgren, Torbjörn; Olsen, Tor-Eirik; Lebesbye, Erland (2001)
Publisher: Co-Action Publishing
Journal: Polar Research
Languages: English
Types: Article
Subjects:
Based on detailed stratigraphical analysis of sediment cores spanning the last ca. 4000 calendar years, we reconstruct the palaeoceanograhic changes in the fiord Van Mijenfjorden, western Svalbard. Benthic foraminiferal ?18O indicate a gradual reduction in bottom water salinities between 2200 BC and 500 BC. This reduction was probably mainly a function of reduced inflow of oceanic water to the fiord, due to isostatic shallowing of the outer fiord sill. Stable salinity conditions prevailed between 500 BC and. 1300 AD. After the onset of a major glacial surge of the tidewater Paulabreen (Paula Glacier) system (PGS) around 1300 AD, there was a foraminiferal faunal change towards glacier proximal conditions, associated with a slight bottom water salinity depletion. During a series of glacial surges occuring from 1300 AD up the present salinity in the fiord has further decreased, corresponding to a ?18O depletion of 0.5 %o. This salinity decrease corresponds to the period when the PGS lost an equivalent of 30 – 40 % of its present ice volume, mainly through calving in the fiord.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Appleby, P. G., Nolan, P. J., Gifford, D. W., Godfrey, M. J., Oldfield, F., Anderson, N. J. & Battarbee, R. W. 1986: 210-Pb dating by low background gamma counting, Hydrobiologica 143, 21-27.
    • Appleby, P. G. & Oldfield, F. 1978: The calculation of lead-210 dates assuming a constant rate of supply of unsupported 210-Pb to the sediment. Catena 5, 1-8.
    • Birks, H. H. 1991: Holocene vegetational history and climate change in west Spitsbergen-plant macrofossils from Skardtjørna, an Arctic lake. The Holocene, 1, 209-218.
    • Cöster, F. 1925: Quaternary geology of the region around the Kjellstrøm Valley. Geogr. Ann. VII, 104-121.
    • De Geer, G. 1919: Spetsbergens natur i Sveagruvans omnejd. (Spitsbergen's nature in the Svea mine area.) Ymer 4, 240-277.
    • Dowdeswell, J. & Dowdeswell, E.-K. 1989: Debris in icebergs and rates of glaci-marine sedimentation; observations from Spitsbergen and a simple model. J. Geol. 92, 221-231.
    • Dowdeswell, J., Hamilton, G. S. & Hagen, J. O. 1991: The duration of the active phase on surge-type glaciers: contrasts between Svalbard and other regions. J. Glaciol. 37, 388-400.
    • Duplessy, J.-C. 1978: Isotope studies. In J. R. Gribbin (ed.): Climatic change. Pp. 46-67. Cambridge: Cambridge University Press.
    • Feyling-Hanssen, R. W. 1958: Mikropaleontologiens teknikk. (Micropalaeontological techiniques.) Norwegian Geotechnical Institute 29, 1-14.
    • Freeland, H., J., Farmer, D. M. & Levings, C. D. 1980: Fjord oceanography. New York: Plenum Press.
    • Gulliksen, B., Holte, B. & Jakola, K.-J. 1985: The soft bottom fauna in Van Mijenfjord and Raudfjord, Svalbard. In J. S. Gray & M. E. Christiansen (eds.): Marine biology of polar regions and effects of stress on marine organisms. Pp. 199-215. New York: John Wiley & Sons.
    • Haga, Ø. 1978: Morenemasser i dødis etter et brefremstøt i Van Mijenfjorden. (Till deposits in dead ice from a glacier advance in Van Mijenfjorden.) Thesis, University of Oslo.
    • Hagen, J. O., Roland, E. & Jørgensen, T. 1993: Glacier atlas of Svalbard and Jan Mayen. Nor. Polarinst. Medd. 129. Oslo: Norwegian Polar Institute.
    • Hald, M. & Korsun, S. 1997: Distribution of modern Arctic benthic foraminifera from fjords of Svalbard. J. Foraminifer. Res. 27, 101-122.
    • Hambrey, M. J., Dowdeswell, J., Murray, T. & Porter, P. R. 1996: Thrusting and debris entrainment in a surging glacier: Bakaninbreen, Svalbard. Ann. Glaciol. 22, 241-248.
    • Hansbo, S. 1957: A new approach to determination of shear strength of clay by the fall cone test. Royal Swedish Geotechnical Institute Proceedings 14.
    • Harland, W. B. 1997: The geology of Svalbard. Geol. Soc. Mem. 17. London: Geological Society.
    • Högbom, B. 1911: Bidrag till Isfjordområdets kvaraergeologi. (On the Quaternary geology of the Isfjorden area.) Geol. Fören. Stockholm Förh. 33, 32-57.
    • Hopkins, T. S. 1991: The GIN Sea-a synthesis of its physical oceanography and literature review 1972-1985. Earth Sci. Rev. 30, 175-318.
    • Jiskoot, H., Murray, T. & Boyle, P. 2000: Controls on the distribution of surge-type glaciers in Svalbard. J. Glaciol. 46, 412-422.
    • Johnsen, S. J., Clausen, H. B., Dansgaard, W., Gundestrup, N. S., Hansson, M., Jonsson, P., Steffensen, J. P. & Sveinbjørndottir, A. E. 1992: A “deep” ice core from east Greenland. Medd. Grønl. Geosci. 29, 3-22.
    • Korsun, S. & Hald, M. 1998: Modern benthic foraminifera off tide water glaciers, Novaja Semlja, Russian Arctic. Arct. Alp. Res. 30, 61-77.
    • Landvik, J. Y., Mangerud, J. & Salvigsen, O. 1987: The late Weichselian and Holocene shoreline displacement on the west-central coast of Svalbard. Polar Res. 5, 29-44.
    • Lubinski, D. L., Forman, S. L. & Miller, G. H. 1999: Holocene glacier and climatic fluctuations on Franz Josef Land, Arctic Russia, 80° N. Quat. Sci. Rev. 18, 85-108.
    • Mangerud, J. & Gulliksen, S. 1975: Apparent radiocarbon ages of recent marine shells from Norway, Spitsbergen, and Arctic Canada. Quat. Res. 5, 263-273.
    • Meldgaard, S. & Knudsen, K. L. 1979: Metoder til indsamling og oparbejdning af prøver til foraminifer-analyser. (Methods for sampling and processing of samples for foramineral analysis.) Dansk Natur Dansk Skole Årsskrift 1979, 48-57.
    • Mosby, H. 1968: In A. Sømme (ed.): Geography of Norden. Pp. 18-26, map 7. Oslo: J. W. Cappelen.
    • Murray, T., Dowdeswell, H. A., Drewry, D. J. & Frearson, I. 1998: Geometric evolution and ice dynamics during a surge of Bakaninbreen, Svalbard . J. Glaciol. 44, 263-272.
    • Overpeck, J., Hughen, K., Hardy, D., Bradley, R., Case, R., Douglas, M., Finney, B., Gajewski, K., Jacoby, G., Jennings, A., Lamoureux, S., MacDonald, G., Moore, J., Retelle, M., Smith, S., Wolfe, A. & Zielinski, G. 1997: Arctic environmental changes of the last four centuries. Science 287, 1251-1256.
    • Punning, J.-M., Troitsky, L. & Rajamae, R. 1976: The genesis and age of the Quaternary deposits in the eastern part of Van Mijenfjorden, West Spitsbergen. Geol. Fören. Förh. 98, 343-347.
    • Rowan, D. E., Pewe, T. L. & Pewe, R. H., 1982: Holocene glacial geology of the Svea lowland, Spitsbergen, Svalbard. Geogr. Ann. 64A, 35-51.
    • Salvigsen, O., Forman, S. L. & Miller, G. H. 1992: Thermophilous molluscs on Svalbard during the Holocene and their paleoclimatic implications. Polar Res. 11, 1-10.
    • Salvigsen, O. & Winsnes, T. O. 1989: Geological map of Svalbard 1:100,000. Sheet C10G Braganzavågen map. Nor. Polarinst. Temakart 4. Oslo: Norwegian Polar Institute.
    • Shackleton, N. J., Imbrie, J. & Hall, M. A. 1983: Oxygen and carbon isotope record of The east Pacific core V19-30: implications for the formation of deep water in the late Pleistocene North Atlantic Earth Planet. Sci. Lett. 65, 233-244.
    • Shackleton, N. J. & Opdyke, N. D. 1973: Oxygen isotope and palaeomagnetic stratigraphy of equatorial Pacific core V28-238: oxygen isotope temperatures and ice volume on a 105 year and 106 year scale. Quat. Res. 3, 39-55.
    • Skardhamar, J. 1998: Sirkulasjonen i Van Mijenfjorden, en arktisk fjord. (Circulation in Van Mijenfjorden, an Arctic iford.) Thesis, Dept. of Geophysics, University of Bergen.
    • Steel, R. J. & Worsley, D. 1984: In A. M. Spencer et al. (eds.) Petroleum geology of the northern European margin. Pp. 109-135. London: Graham and Trotman.
    • Stuiver, M., Reimer, P., J., Bard, E., Beck, J., W., Burr, G. S., Hughen, K. A., Kromer, B., McCormac, G., van der Plicht, J. & Spurk, M. 1998: INTCAL98 Radiocarbon age calibration, 24,000-0 cal BP. Radiocarbon 40, 1041-1083.
    • Svendsen, J. I. & Mangerud, J. 1997: Holocene glacial and climatic variations on Spitsbergen, Svalbard. The Holocene 7, 45-57.
    • Syvitski, J. P. M., Burrell, D. C. & Skei, J. M. 1987: Fjords: processes and products. New York: Springer.
    • Syvitski, J. P. M. & Shaw, J. 1995: In G. M. P. Perillo (ed.): Geomorphology and sedimentology of estuaries. Dev. Sedimentol. 53, 113-178.
    • Vinje, T. 1985: The physical environment, the western Barents Sea. Drift, composition, morphology and distribution of the sea ice fields in the Barents Sea. Nor. Polarinst. Skr. 179c, 26. Oslo: Norwegian Polar Institute.
    • Wadhams, P. 1981: The ice cover in the Greenland and Norwegian seas, Rev. Geophys. Space Phys. 19, 345-393.
  • No related research data.
  • Discovered through pilot similarity algorithms. Send us your feedback.

Share - Bookmark

Cite this article

Collected from