Abstract—Seasonal variations of surface nutrients and hydrography data obtained in period (1997-2010) by the Institute of Marine Research over three transects: Fugløya-Bjørnøya, Gimsøy and Svinøy located in the Norwegian Sea have been studied. The results over the Fugløya-Bjørnøya transect show good signature of the seasonal cycle of nitrate (10.4 µmol/Kg in winter time, 0.8 µmol/Kg in bloom time, and 0.6 in post-bloom time), and temperature (4.8 ºC in winter time, 6.5 ºC in bloom time, 9.5 ºC in post-bloom time), reflecting both bloom and post-bloom periods. The Gimsøy transect shows a weak seasonal cycle of nitrate and temperature in the outer part because there is no enough data during the bloom and post-bloom period. But the middle and inner part show good seasonal cycle of nitrate and temperature during the two periods. Finally, the Svinøy transect shows good seasonal cycle of nitrate (10.1 µmol/Kg in winter time, 2.0 µmol/Kg in the bloom time, 0.9 µmol/Kg in post-bloom time), and temperature (7.1 ºC in winter time, 7.8 ºC in bloom time, 12.4 ºC in post-bloom time), during the bloom and post-bloom.
Index Terms—Norwegian Sea, seasonal variations, temperature, nutrients, spring bloom, post-bloom, salinity.
Ahmed Ibrahim is with the Geophysical Institute, University of Bergen, Norway (e-mail: email@example.com).
Are Olsen and Siv Lauvset are with Bjerknes Centre for Climate Research, University of Bergen, Norway (e-mail: firstname.lastname@example.org, email@example.com).
Francisco Rey is with Institute of Marine Research, Norway (e-mail: firstname.lastname@example.org).
Cite:Ahmed Ibrahim, Are Olsen, Siv Lauvset, and Francisco Rey, "Seasonal Variations of the Surface Nutrients and Hydrography in the Norwegian Sea," International Journal of Environmental Science and Development vol. 5, no. 5, pp. 496-505, 2014.