Rotary motions and convection as a means of regulating primary production in warm core rings

American Geophysical Union (AGU) - Tập 90 Số C2 - Trang 3237-3248 - 1985
Charles S. Yentsch, David A. Phinney

Tóm tắt

We believe that two mechanisms are important in regulating primary production and hence the abundance of phytoplankton in warm core rings. The first mechanism, anticyclogenesis, is associated with the rotary motion of rings since the resultant geostrophic forces are believed to be the basis for nutrient enrichment in the high velocity region. Phytoplankton populations in this peripheral region experience a near steady state growth closely coupled with the rotational velocity of the ring. The second mechanism is that phytoplankton populations in the ring center rely on seasonal changes in the depth of the mixed layer due to convection and stabilization. This process regulates both the mean light energy reaching phytoplankton and equalizes the nutrient distribution over the water column. Growth in populations at ring center occurs as pulses, responding to changes in the depth of the mixed layer.

Từ khóa


Tài liệu tham khảo

Chamberlain J. L., 1982, Application of satellite infrared data to analysis of ocean frontal movements and water mass interactions off northeastern United States, NAFO Sci. Court. Stud., 4, 21

Defant A., 1961, Physical Oceanography

10.1093/plankt/5.4.515

Fuglister F., 1972, Studies in Physical Oceanography—A Tribute to Georg Wust on His 80th Birthday, 137

Gordon H. R., 1982, Satellite measurements of the phytoplankton pigment concentration in the surface waters of a warm core Gulf Stream rings, J. Mar. Res., 40, 491

10.1016/0146-6313(59)90095-4

10.1016/0011-7471(71)90003-9

10.4319/lo.1958.3.3.0327

10.1016/0011-7471(62)90245-0

10.1098/rsta.1981.0186

10.1038/284540a0

10.1038/297572a0

Wiebe P. H., 1976, The biology of cold‐core rings, Oceanus, 19, 69

10.1016/S0011-7471(76)80015-0

Wood J. D., 1977, Modelling and Prediction of the Upper Layers of the Ocean, 118

10.4319/lo.1962.7.2.0207

Yentsch C. S., 1974, The influence of geostrophy on primary production, Tethys, 6, 111

Yentsch C. S., 1975, Respiration of Marine Organisms, 1

Yentsch C. S. Plankton Production MESA New York Bight Atlas Monogr. 12 24 New York Sea Grant Institute New York 1977.

Yentsch C. S., 1981, Satellite observation of phytoplankton distribution associated with large scale oceanic circulation, NAFO Sci. Coun. Stud., 4, 53

Thông tin
Thông tin xuất bản

American Geophysical Union (AGU)

Tập 90 Số C2

3237-3248

Thông tin tác giả