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| Andersen, C; Koc, N; Moros, M. |
| A composite record (LO09-14) of three sediment cores from the subpolar North Atlantic (Reykjanes Ridge) was investigated in order to assess surface ocean variability during the last 11 kyr. The core site is today partly under the influence of the Irminger Current (IC), a branch of the North Atlantic Drift continuing northwestward around Iceland. However, it is also proximal to the Sub-Arctic Front (SAF) that may cause extra dynamic hydrographic conditions. We used statistical methods applied to the fossil assemblages of diatoms to reconstruct quantitative sea surface temperatures (SSTs). Our investigations give evidence for different regional signatures of Holocene surface oceanographic changes in the North Atlantic. Core LO09-14 reveal relatively low and... |
| Tipo: Text |
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| Ano: 2004 |
URL: https://archimer.ifremer.fr/doc/00229/34003/32348.pdf |
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| Andersen, C; Thibaud, Yves; Alzieu, Claude. |
| At the various intermolt stages (A, B, C, D) the cephalothorax, abdominal muscle, exoskeleton and legs of shrimp Crangon crangon L.from the Seine Bay estuary have been analyzed for Hg, Cd, Cu, Fe and Zn. A statistical test of the results of the metal analyses, and the variations of the concentrations during the intermolt cycle are used to estimate to what extent the shrimp is a representative indicator of its environment. |
| Tipo: Text |
Palavras-chave: Crangon crangon Malacostraca Pollutant identification Marine crustaceans Bioaccumulation Heavy metals. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/publication-1799.pdf |
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| Andersen, C; Koc, N; Jennings, A; Andrews, Jt. |
| High-resolution sediment cores from the Voring Plateau, the North Iceland shelf, and the East Greenland shelf have been studied to investigate the stability of major surface currents in the Nordic Seas during the Holocene. Results from diatom assemblages and reconstructed sea-surface temperatures (SSTs) indicate a division of the Holocene into three periods: the Holocene Climate Optimum (9500 - 6500 calendar (cal) years BP), the Holocene Transition Period ( 6500 - 3000 cal years BP) and the Cool Late Holocene Period ( 3000 - 0 cal years BP). The overall climate development is in step with the decreasing insolation on the Northern Hemisphere, but regional differences occur regarding both timing and magnitude of SST changes. Sites under the direct influence... |
| Tipo: Text |
Palavras-chave: Nordic Seas; Holocene; Sea-surface temperatures. |
| Ano: 2004 |
URL: https://archimer.ifremer.fr/doc/00226/33721/32134.pdf |
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