Sökning: WFRF:(Johnsen S.)
> (1990-1994) >
A "deep" ice core f...
A "deep" ice core from east Greenland
-
Johnsen, Sigfus J. (författare)
-
Clausen, Henrik B. (författare)
-
Dansgaard, Willi (författare)
-
visa fler...
-
Gundestrup, Niels S. (författare)
-
Hansson, Margareta (författare)
-
- Jonsson, Peter (författare)
- Lund University,Lunds universitet,Teknisk geologi,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Engineering Geology,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH
-
Steffensen, Jørgen P. (författare)
-
Sveinbjörnsdottir, Arny E. (författare)
-
visa färre...
-
(creator_code:org_t)
- 1992
- 1992
- Engelska.
-
Ingår i: MoG Geoscience. ; 29
- Relaterad länk:
-
https://lup.lub.lu.s...
Abstract
Ämnesord
Stäng
- Pilot studies on the Renland peninsula in Scoresbysund Fjord, East Greenland, indicated that the relatively small and separate Renland ice cap meets most of the criteria defining a favourable ice-core drill-site. In 1988, a Nordic expedition recovered a continuous surface-to-bedrock ice core from the summit. This relatively short core reaches deep into the past, probably throughout the last glaciation and through most of the preceding interglacial, Eem, 125,000 years B.P. The core contains detailed information on temporal changes of the coastal environment, and serves as a valuable complement to the new deep ice cores being drilled in Central Greenland. Core analyses suggest that (1) during Eemian time the East Greenland climate was at least 5ÔC warmer than now, and the precipitation 20% higher; (2) during the last glacial period, the precipitation decreased to a minimum, perhaps only 20% of the present value; (3) the post-glacial climatic optimum was 2,5ÔC warmer than now; (4) the long-term variability of the record is relatively low, due to isostatic movements in the area; and (5) from 70,000 years B.P. the Greenland glacial climate alternated between two quasi-stable stages. The latter point may reflect a chaotic feature of climate. If so, climate predictions will be difficult to access.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Geoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Geotechnical Engineering (hsv//eng)
Nyckelord
- Greenland
- Renland
- Glaciology
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas