Lyell Collection
Geological Society, London, Special Publications
Lyell Centre  |   Lyell Collection  |   Subscriptions   |   Geological Society  |   Email alerts  |   Online bookshop  |   Help

Keywords:
Author:
Advanced search>>
This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow Request Permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ortiz, J. D.
Right arrow Articles by Mix, A. C.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation
Geological Society, London, Special Publications; 1992; v. 64; p. 197-213;
DOI: 10.1144/GSL.SP.1992.064.01.13
© 1992 Geological Society of London

Modern Upwelling Systems and Palaeo-Upwelling Criteria

The spatial distribution and seasonal succession of planktonic foraminifera in the California Current off Oregon, September 1987 – September 1988

Joseph D. Ortiz & Alan C. Mix

College of Oceanography, Oregon State University, Corvallis, OR 97331-5503, USA

Preliminary results are presented from the September 1987 to September 1988 deployment of the Multitracers Project, a moored sediment trap experiment in the California Current. Three sediment trap moorings were deployed on a transect off Cape Blanco at 130, 280, and 650 km offshore. The seasonal distribution of foraminifers in the California Current at 42°N reflect variations in the temperatures and water masses present at each site. The winter assemblage of foraminifers at the sites 130 and 280 km offshore comprise mainly the subarctic/transitional species: N. pachyderma (right), N. dutertrei, G. bulloides, G. quinqueloba and G. glutinata. From late June to September 1988 at the site 130 km offshore, G. bulloides, G. falconensis, N. pachyderma (left) and the P-D intergrade category record high fluxes, apparently in response to upwelling conditions. The subtropical species O. universa, G. ruber and T. humilis are most important at the site 650 km offshore. The foraminiferal communities present from September 1987 to September 1988 off Cape Blanco seem to be more diverse but less productive than assemblages from the Alaskan Gyre at Station P (45°N, 150°W) as described in the literature.





This article has been cited by other articles:


Home page
 Journal of Foraminiferal ResearchHome page
M. Oda and M. Yamasaki
SEDIMENT TRAP RESULTS FROM THE JAPAN TRENCH IN THE KUROSHIO DOMAIN: SEASONAL VARIATIONS IN THE PLANKTIC FORAMINIFERAL FLUX
Journal of Foraminiferal Research, 2005; 35: 315 - 326.
[Abstract] [Full Text] [PDF]

Home page
 Geological Society, London, Special PublicationsHome page
S. J. A. Jung, E. Ivanova, G. J. Reichart, G. R. Davies, G. Ganssen, D. Kroon, and J. E. Van Hinte
Centennial-millennial-scale monsoon variations off Somalia over the last 35 ka
Geological Society, London, Special Publications, 2002; 195: 341 - 352.
[Abstract] [PDF]