Antarktis-bibliografi er en database over den norske Antarktis-litteraturen.
Hensikten med bibliografien er å synliggjøre norsk antarktisforskning og annen virksomhet/historie i det ekstreme sør. Bibliografien er ikke komplett, spesielt ikke for nyere forskning, men den blir oppdatert.
Norsk er her definert som minst én norsk forfatter, publikasjonssted Norge eller publikasjon som har utspring i norsk forskningsprosjekt.
Antarktis er her definert som alt sør for 60 grader. I tillegg har vi tatt med Bouvetøya.
Det er ingen avgrensing på språk (men det meste av innholdet er på norsk eller engelsk). Eldre norske antarktispublikasjoner (den eldste er fra 1894) er dominert av kvalfangst og ekspedisjoner. I nyere tid er det den internasjonale polarforskninga som dominerer. Bibliografien er tverrfaglig; den dekker både naturvitenskapene, politikk, historie osv. Skjønnlitteratur er også inkludert, men ikke avisartikler eller upublisert materiale.
Til høyre finner du en «HELP-knapp» for informasjon om søkemulighetene i databasen. Mange referanser har lett synlige lenker til fulltekstversjon av det aktuelle dokumentet. For de fleste tidsskriftartiklene er det også lagt inn sammendrag.
Bibliografien er produsert ved Norsk Polarinstitutts bibliotek.
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Results 115 resources
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A simple analytical model has been developed to study the formation of Ice Shelf Water (ISW). ISW is assumed to flow as a buoyancy-driven layer underneath the ice shelf. A relation between potential temperature and salinity in the ISW layer is calculated from the mass and energy balance. This temperature-salinity relation is shown to depend only on the temperature and the salinity of the source water mass and to be practically independent of entrainment and melt rates. The model results are obtained without making any assumptions about entrainment and melt rates. The model is in good agreement with observations under the Ronne Ice Shelf, and it indicates that ISW in the Filchner Depression is formed from Western Shelf Water (WSW) with salinity higher than 34.75 practical salinity units. Such high-salinity water is only observed in the Ronne Depression in the western part of the continental shelf. This implies a circulation of WSW, under the Filchner-Ronne Ice Shelf, from the Ronne Depression into the Filchner Depression. Similarly, the model shows that the ISW observed under J9 at the Ross Ice Shelf has been formed from Low Salinity Shelf Water (LSSW) from the eastern parts of the Ross Sea continental shelf. LSSW must therefore circulate under the eastern parts of the Ross Ice Shelf.
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Multichannel seismic investigations show the presence of a large trough-mouth fan deposit on the continental margin in the southern Weddell Sea. A characteristic feature of the fan is relatively few, but large canyons and/or channels which appear to have been stable for long periods. Levees associated with the channels may reach thicknesses of more than 1 km. Drilling during ODP Leg 113 recorded the presence of glaciers in East Antarctica since early Oligocene time, and the seismic stratigraphic evidence suggests that the submarine fan is largely composed of glacigenic sediments. The channel-levee systems and complexes indicate several growth phases, apparently controlled by glacial/interglacial climate fluctuations, with maximum fan growth during glacial periods. The present interglacial period is characterized by strong and erosive flow of Ice Shelf Water running down the western slope of the fan and carrying only minor amounts of suspended matter. The fan is essentially sediment starved during interglacial periods. The dimensions of the channel-levee complexes and the persistent loci of sediment supply suggest that turbidite sedimentation resulted from melting of wet-based glaciers at or near the shelf edge, which has consequently prograded 70-80 km seaward.
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Oxygen 18 and helium isotope data from stations located in the Filchner Depression, on the continental slope of the southern Weddell Sea, and in the central Weddell Sea are presented and discussed. The 18O and 4He signals imprinted on the water circulating under the Filchner/Ronne Ice Shelf (Ice Shelf Water, or ISW) due to melting of glacial ice at the base of the ice shelf are traced across the sill separating the Filchner Depression from the Weddell Sea. Low δ18O values are correlated with high 4He concentrations in the ISW found in the Filchner Depression (minimum δ18O values: −0.8‰; maximum 4He concentrations: about 4.7×10−8 cm3 STP g−1). The fraction of glacial meltwater contained in the ISW found in the Filchner Depression is estimated to about 6 to 7‰. The 18O and helium isotope data from the overflowing shelf water component observed on the continental slope confirm the hypothesis that ISW contributes significantly to the Weddell Sea Bottom Water (WSBW). On the basis of a inultiparameter water mass analysis it is discussed which fraction of the WSBW originates from ISW and which other shelf waters potentially could contribute to WSBW.
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The Southern Ocean circulation and sea-ice distribution is briefly described. The formation of extremely cold bottom water in the Weddell Sea and its relation to the floating Ronne-Filchner Ice Shelves is discussed. It is shown that a concentrated swift eroding bottom current with anomalous low ratio transports the cold and dense ice Shelf Water from the shelf towards large depths. Comments are made on possible implications of this process for the large-scale deep-water circulation and for the interpretation of sediment cores.
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Topic
- isshelf
- AABW (4)
- akkumulasjon (1)
- Amundsenhavet (2)
- Antarktis (34)
- batymetri (4)
- biogeokjemi (1)
- biologi (1)
- biomasse (1)
- biosfære (1)
- blåis (1)
- brehylle (19)
- bunnvann (3)
- bunnvannet (2)
- deglasiasjon (1)
- Den Norske Antarktisekspedisjonen 1956-60 (1)
- Den norske antarktisekspedisjonen 1956-60 (1)
- Dronning Maud Land (36)
- ekspedisjoner (11)
- fjernanalyse (1)
- fjernmåling (2)
- forskning (8)
- fysikk (1)
- fysisk oseanografi (2)
- fytoplankton (2)
- geofysikk (21)
- geokjemi (2)
- geologi (4)
- geomorfologi (2)
- georadar (2)
- geovitenskap (1)
- glasiologi (66)
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- havstrømmer (10)
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- is (3)
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- isfjell (6)
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- kjemi (1)
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- klimaendringer (13)
- klimamodeller (2)
- klimatologi (5)
- kontinentalmargin (2)
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- kontinentalsokler (4)
- laboratorieeksperimenter (1)
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- marin biologi (1)
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- meteorologi (4)
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- NARE 1976/77 (2)
- NARE 1978/79 (4)
- NARE 1989/90 (3)
- NARE 1991/92 (2)
- NARE 1992/93 (2)
- NARE 1996/97 (2)
- NARE 2000/01 (1)
- NBSAE 1949-52 (2)
- Norsk-britisk-svenske antarktisekspedisjon (2)
- NSBX 1949-52 (2)
- observasjoner (2)
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- Sørishavet (66)
- stabile isotoper (1)
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- subglasial biodiversitet (1)
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- teknologi (2)
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- tidevannsstrømmer (1)
- topografi (3)
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- vannmasser (10)
- vannvirvler (3)
- Weddellhavet (35)
Resource type
- Book (4)
- Book Section (17)
- Journal Article (92)
- Report (1)
- Thesis (1)
Publication year
- Between 1900 and 1999 (39)
- Between 2000 and 2025 (76)