Author: Publisher:
ISBN:
Category : Marine meteorology
Languages : en
Pages : 380
Book Description
Tropical Ocean-atmosphere Newsletter
Author: Journal of Physical Oceanography
Author: Remote Sensing of Atmosphere and Oceans
Author: COSPAR. Plenary MeetingPublisher: Elsevier Science & Technology
ISBN:
Category : Science
Languages : en
Pages : 496
Book Description
Ocean Modelling
Author: Contribution française à la connaissance géographique des Antilles et de l'Atlantique au sud des Açores
Author: Comité national français de géographiePublisher: Presses Univ de Bordeaux
ISBN: 9782905081193
Category : Islands of the Atlantic
Languages : fr
Pages : 248
Book Description
California Cooperative Oceanic Fisheries Investigations Progress Report
Author: Resources, Fishing and Biology of the Tropical Tunas of the Eastern Central Atlantic
Author: Food and Agriculture Organization of the United NationsPublisher: Bernan Press(PA)
ISBN:
Category : Nature
Languages : en
Pages : 380
Book Description
The tuna resources of the eastern central Atlantic have been the object of an intensive fishery for over thirty years, and have been the object of numerous studies conducted under the coordination of the International Commission for the Conservation of Atlantic Tunas. This document presents a summary of current knowledge of the biology of the principal species of tuna in the eastern tropical Atlantic, the oceanographic environment of tunas and the influence of environmental conditions on production. A detailed description of the principal fisheries of the region and the history of their development is presented as well as the methods of population dynamics used to assess the abundance of the stocks and to estimate changes in the level of their exploitation.
California Cooperative Oceanic Fisheries Investigations, Progress Report
Author: California Cooperative Oceanic Fisheries Investigations (Program)Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 824
Book Description
Dynamics of the Equatorial Undercurrent and Its Termination
Author: Sophie WacongnePublisher:
ISBN:
Category : Ocean circulation
Languages : en
Pages : 884
Book Description
This study focuses on the zonal weakening, eastern termination and seasonal variations of the Atlantic equatorial undercurrent (EUC). The main and most original contribution of the dissertation is a detailed analysis of the Atlantic EUC simulated by Philander and Pacanowski's (1986)general circulation model (GCM), which provides a novel description of the dynamical regimes governing various regions of a nonlinear stratified undercurrent. Only in a narrow deep western region of the simulation does one find an approximately inertial regime corresponding to zonal acceleration. Elsewhere frictional processes cannot be ignored. The bulk of the mid-basin model EUC terminates in the overlying westward surface flow while only a small fraction (the deeper more inertial layers) terminates at the eastern coast. In agreement with observations, a robust feature of the GCM not present in simpler models is the apparent migration of the EUC core from above the thermocline in the west to below it in the east. In the GCM, this happens because the eastward flow is eroded more efficiently by vertical friction above the base of the thermocline than by lateral friction at greater depths. This mechanism is a plausible one for the observed EUC. A scale analysis using a depth scale which decreases with distance eastwards predicts the model zonal transition between western inertial and eastern inertio-frictional regimes. Historical and recent observations and simple models of the equatorial and coastal eastern undercurrents are reviewed, and a new analysis of current measurements in the eastern equatorial Atlantic is presented. Although the measurements are inadequate for definitive conclusions, they suggest that Lukas' (1981) claim of a spring surge of the Pacific EUC to the eastern coast and a seasonal branching of the EUC into a coastal southeastward undercurrent may also hold for the Atlantic Ocean. To improve the agreement between observed and modelled strength of the eastern undercurrent, it is suggested that the eddy coefficient of horizontal mixing should be reduced in future GCM simulations.
Author: