Overslaan en naar de inhoud gaan
Publicaties | Personen | Instituten | Projecten
[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina

Seasonal and interannual variability of the mixed layer properties and steric height at station KERFIX, southwest of Kerguelen
Park, Y.-H.; Charriaud, E.; Ruiz Pino, D.; Jeandel, C. (1998). Seasonal and interannual variability of the mixed layer properties and steric height at station KERFIX, southwest of Kerguelen. J. Mar. Syst. 17(1-4): 571-586. https://dx.doi.org/10.1016/S0924-7963(98)00065-7
In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963; e-ISSN 1879-1573, meer
Ook verschenen in:
Le Fèvre, J.; Tréguer, P. (Ed.) (1998). Carbon Fluxes and Dynamic Processes in the Southern Ocean: Present and Past. Selected papers from the International JGOFS Symposium, Brest, France, 28-31 August 1995. Journal of Marine Systems, 17(1-4). Elsevier: Amsterdam. 1-619 pp., meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Trefwoorden
    Anomalies
    Aquatic sciences > Marine sciences > Earth sciences > Oceanography > Dynamical oceanography
    Data > Hydrographic data
    Data > Hydrographic data > Salinity data
    Data > Temperature data
    Dimensions > Depth > Mixed layer depth
    El Nino phenomena
    Hydrometeors > Atmospheric precipitations
    Layers > Water column
    Layers > Water column > Mixed layer
    Levels > Water levels > Sea level > Steric sea level
    Motion > Water motion > Circulation > Water circulation > Ocean circulation > Oceanic eddies
    Ocean-atmosphere system
    Oceanographic stations > Fixed stations > Ocean stations
    Oscillations > Southern oscillation
    Phase changes > Vaporization > Evaporation
    Teleconnections
    PSE, Antarctic Ocean [Marine Regions]; PSE, Kerguelen I. [Marine Regions]; PSE, South Indian Ocean [Marine Regions]
    Marien/Kust

Auteurs  Top 
  • Park, Y.-H.
  • Charriaud, E.
  • Ruiz Pino, D.
  • Jeandel, C.

Abstract
    The spatial and temporal variability of phytoplankton biomass, estimated as chlorophyll-a (chl-a) concentration, is examined in the continental shelf-slope region west of the Antarctic Peninsula. Relationships between temporal observations in the nearshore Palmer Station grid (64°46.77'S, 64°04.36'W) and spatial observations in a larger regional grid 200 km on/off-shore and 900 km alongshore are presented. Average chl-a concentrations in the upper layers of the water column in the immediate vicinity of Palmer Station show strong seasonal and interannual variability. Biomass accumulation typically starts during mid-November, while strong blooms develop from December through January. The 1991/1992 and 1994/1995 seasons developed higher overall chl-a concentrations (average maximum water column values reaching 8 and 16 mg chl-a m-3, respectively) than the 1992/1993 and 1993/1994 seasons (average maximum water column values of less than 3 mg chl-a m-3). The 1994/1995 season of extremely high chl-a concentrations also showed a prolonged bloom period into February, while the 1991/1992 season did not. Similar interannual variability was observed in the regional grid. Average chl-a concentration in the top 30 m was 0.91, 1.24 and 1.66 mg chl-a m-3 for January of 1993, 1994 and 1995, respectively. The regional grid contains an on/off-shore gradient in bottom topography, measured physical and optical characteristics, as well as chl-a concentrations. Regional inshore grid stations in January had, on average, almost four times more chl-a biomass than off-shore stations (2.18 vs. 0.59 mg chl-a m-3, respectively). There is evidence that this on/off-shore gradient is modulated alongshore by latitudinal variability which follows the annual advance and retreat of sea ice.

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs