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 2 resources
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Fe(II) is more soluble and bioavailable than Fe(III) species, therefore the investigation of their relative abundance and redox processes is relevant to better assess the supply of bioavailable iron to the ocean and its impact on marine productivity. In this context, we present a discrete chemiluminescence-based method for the determination of Fe(II) in firn matrices. The method was applied on discrete samples from a snow pit collected at Dome C (DC, Antarctica) and on a shallow firn core from the Holtedahlfonna glacier (HDF, Svalbard), providing the first Fe(II) record from both Antarctica and Svalbard. The method showed low detection limits (0.006 ng g−1 for DC and 0.003 ng g−1 for the HDF) and a precision ranging from 3% to 20% RSD. Fe(II) concentrations ranged between the LoD and 0.077 ng g−1 and between the LoD and 0.300 ng g−1 for the Antarctic and Arctic samples, respectively. The Fe(II) contribution with respect to the total dissolved Fe was comparable in both sites accounting, on average, for 5% and 3%, respectively. We found that Fe(II) correctly identified the Pinatubo/Cerro Hudson eruption in the DC record, demonstrating its reliability as volcanic tracer, while, on the HDF core, we provided the first preliminary insight on the processes that might influence Fe speciation in firn matrices (i.e. organic ligands and pH influences).
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Sea surface fugacity of carbon dioxide (fCO<sub>2</sub>ssw) was measured across the Weddell gyre and the eastern sector in the Atlantic Southern Ocean in autumn. During the occupation between February and April 2019, the region of the study transect was a potential ocean CO<sub>2</sub> sink. A net CO<sub>2</sub> flux (FCO<sub>2</sub>) of −6.2 (± 8; sink) mmol m<sup>–2</sup> d<sup>–1</sup> was estimated for the entire study region, with the largest average CO<sub>2</sub> sink of −10.0 (± 8) mmol m<sup>–2</sup> d<sup>–1</sup> in the partly ice-covered Astrid Ridge (AR) region near the coast at 68°S and −6.1 (± 8) mmol m<sup>–2</sup>d<sup>–1</sup> was observed in the Maud Rise (MR) region. A CO<sub>2</sub> sink was also observed south of 66°S in the Weddell Sea (WS). To assess the main drivers describing the variability of fCO<sub>2</sub>ssw, a correlation model using fCO<sub>2</sub> and oxygen saturation was considered. Spatial distributions of the fCO<sub>2</sub> saturation/O<sub>2</sub> saturation correlations, described relative to the surface water properties of the controlling variables (chlorophyll a, apparent oxygen utilization (AOU), sea surface temperature, and sea surface salinity) further constrained the interplay of the processes driving the fCO<sub>2</sub>ssw distributions. Photosynthetic CO<sub>2</sub> drawdown significantly offsets the influence of the upwelling of CO<sub>2</sub>-rich waters in the central Weddell gyre and enhanced the CO<sub>2</sub> sink in the region. FCO<sub>2</sub> of −6.9 mmol m<sup>–2</sup> d<sup>–1</sup> estimated for the Weddell gyre in this study was different from FCO<sub>2</sub> of −2.5 mmol m<sup>–2</sup> d<sup>–1</sup> in autumn estimated in a previous study. Due to low CO<sub>2</sub> data coverage during autumn, limited sea-air CO<sub>2</sub> flux estimates from direct sea-surface CO<sub>2</sub> observations particularly for the Weddell gyre region are available with which to compare the values estimated in this study. This highlights the importance of increasing seasonal CO<sub>2</sub> observations especially during autumn/winter to improving the seasonal coverage of flux estimates in the seasonal sea ice-covered regions of the Southern Ocean.
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Topic
- kjemi
- Antarktis (1)
- glasiologi (1)
- karbondioksid (1)
- polarområdene (1)
- Sørishavet (1)
Resource type
- Journal Article (2)
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Online resource
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