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| Kessler, William S.; Cravatte, Sophie. |
| The mean absolute geostrophic circulation of the Coral Sea is constructed from climatological hydrographic data referenced to a 1000 m velocity field derived from Argo float drift. Two branches of the South Equatorial Current (SEC) enter the Coral Sea between New Caledonia and the Solomon Islands: the broad, upper thermocline North Vanuatu Jet (NVJ), and the narrow North Caledonian Jet (NCJ) extending to at least 1500 m. Most of this incoming flow leaves to the Solomon Sea. Four distinct pathways through the Coral Sea are traced by their water properties: (1) The NCJ crosses the Sea to the coast of Australia and turns north at densities sigma 25-27.4 as the main source of the Gulf of Papua (GPC) western boundary current, eventually feeding the New Guinea... |
| Tipo: Text |
Palavras-chave: Coral Sea; Argo floats; Western boundary currents; South Equatorial Current; Solomon Sea; Island Rule. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00483/59506/62382.pdf |
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| Gasparin, Florent; Ganachaud, Alexandre; Maes, Christophe; Marin, Frederic; Eldin, Gerard. |
| Thermocline waters of the tropical southwest Pacific can be traced back to the center of the South Pacific basin and have a potential influence on equatorial surface conditions and on the characteristics of the El Nino Southern Oscillation on decadal timescales. The Solomon Sea is traversed by this influential flow, and therefore is an optimal place for exploring this oceanic connection to the equator. From a high-resolution hydrographic survey at which we applied an inverse box model, we describe the main pathways at the entrance of the Solomon Sea, and more particularly the extremely sharp bend of the western boundary current around the south-east tip of Papua New Guinea. Of the 30 Sv subtropical waters transported into the Coral Sea from the east, above... |
| Tipo: Text |
Palavras-chave: Coral Sea; Solomon Sea; Oceanic transport. |
| Ano: 2012 |
URL: https://archimer.ifremer.fr/doc/00214/32501/30985.pdf |
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| Huang, Yin-sheng; Lee, Teh-quei; Hsu, Shu-kun. |
| We describe the orbital-scale environmental variation around Papua New Guinea (PNG) for the last 400 ka based on the environmental magnetism. Six magnetic parameters and the δ18O record of the core MD05-2928 are presented in the study. Results of magnetic analyses reveal opposite responses to different environmental conditions: Magnetic minerals were relatively fewer and finer in interglacial periods and were more and coarser in glacial periods. The reason could be suggested: In interglacial periods, sediments coming from central New Guinea were transported by the coastal currents in the northern Coral Sea and then imported to the core site location. Magnetic minerals would be relatively fewer and finer due to this longer transportation process. In glacial... |
| Tipo: Text |
Palavras-chave: Papua New Guinea; Coral Sea; Wavelet analysis; Orbital forcing; Milankovitch cycles. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00296/40694/39691.pdf |
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| Garrigue, C; Derville, S; Bonneville, C; Baker, Cs; Cheeseman, T; Millet, Laurent; Paton, D; Steel, D. |
| Humpback whales Megaptera novaeangliae were severely depleted by commercial whaling. Understanding key factors in their recovery is a crucial step for their conservation worldwide. In Oceania, the Chesterfield-Bellona archipelago was a primary whaling site in the 19th century, yet has been left almost unaffected by anthropogenic activities since. We present the results of the first multidisciplinary dedicated surveys in the archipelago assessing humpback whale populations 2 centuries post-whaling. We encountered 57 groups during 24 survey days (2016-2017), among which 35 whales were identified using photographs of natural markings (photo-ID), 38 using genotyping and 22 using both. Humpback whales were sparsely distributed (0.041 whales km-1): most... |
| Tipo: Text |
Palavras-chave: Chesterfield-Bellona archipelago; Connectivity; Coral Sea; Habitat use; Humpback whale; Satellite tracking; Sex ratio; Whaling. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00632/74454/74267.pdf |
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| Maes, Christophe; Dewitte, Boris; Sudre, Joel; Garcon, Veronique; Varillon, David. |
| The small-scale features in sea surface temperature and salinity fields (SST and SSS) of the Coral Sea are examined using high horizontal spatial and short-term temporal in situ measurements. These features are extracted from thermosalinographs (TSGs) gathered onboard commercial and research vessels and at one long-term fixed station. The analyses are performed along the vessel tracks and the structures of small-scale features are extracted by high-pass spatial filtering the original TSG data. For SSS, it is shown that the features at the scale of mesoscale eddies (approximate to 100 km) vary from about -1.1 to +0.6 psu in the Coral Sea region. Processes sustaining such range include rainfall events, stirring by mesoscale eddies, and the latitudinal... |
| Tipo: Text |
Palavras-chave: In situ observations; SST; SSS; Coral Sea. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00218/32960/31618.pdf |
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