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Water mass spreading in the warm water sphere of the eastern subtropical North Atlantic. Wassermassenausbreitung in der Warmwassersphaere des subtropischen Nordostatlantiks

Technical Report:

Abstract

Geostrophic transports in the eastern subtropical North Atlantic computed from historic hydrographic data and recent CTD measurements show a mean transport in the subtropical gyre of 11(+-1.6) x 10/sup 6/m/sup 3/s/sup -1/ in the upper 1000 m between 35/sup 0/W and the African coast. The dynamic method was used in conjunction with a conservation of mass scheme to determine the level of no motion. This level lies at the 1200 m depth near the Azores and drops to 1500 m in the tropics. The main inflow enters south of the Azores as a relatively narrow current, turns southward at the latitude of Madeira and then widens. Three current bands transport the water southward. North of the Cape Verde Islands, the current turns westwards. This part of the North Equatorial Current extends more to the south in the upper 200 m than in the 200-800 m layer. The Portugal current, between the Azores and the Portuguese coast, which is thought by some authors to be strong, is seen here as a relatively weak flow. Maps of potential vorticity derived from smoothed density profiles are consistent with the general pattern of geostrophic transport. At 24/sup 0/N one third of the total geostrophic  More>>
Authors:
Publication Date:
Jan 01, 1984
Product Type:
Technical Report
Report Number:
NP-7770055
Reference Number:
DE-87-000079; ERA-12-014501; EDB-87-034797
Resource Relation:
Other Information: Diss. Portions of this document are illegible in microfiche products
Subject:
58 GEOSCIENCES; ATLANTIC OCEAN; OCEANIC CIRCULATION; WATER CURRENTS; CALCULATION METHODS; HEAT TRANSFER; OXYGEN; VORTICES; CURRENTS; ELEMENTS; ENERGY TRANSFER; NONMETALS; SEAS; SURFACE WATERS; 580500* - Oceanography- (1980-1989)
OSTI ID:
7802351
Research Organizations:
Kiel Univ. (Germany, F.R.). Inst. fuer Meereskunde; Kiel Univ. (Germany, F.R.). Mathematisch-Naturwissenschaftliche Fakultaet
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Other: ON: DE87770055
Availability:
NTIS (US Sales Only), PC A06/MF A01; 1.
Submitting Site:
DE
Size:
Pages: 118
Announcement Date:
Mar 14, 2013

Technical Report:

Citation Formats

Stramma, L. Water mass spreading in the warm water sphere of the eastern subtropical North Atlantic. Wassermassenausbreitung in der Warmwassersphaere des subtropischen Nordostatlantiks. Germany: N. p., 1984. Web.
Stramma, L. Water mass spreading in the warm water sphere of the eastern subtropical North Atlantic. Wassermassenausbreitung in der Warmwassersphaere des subtropischen Nordostatlantiks. Germany.
Stramma, L. 1984. "Water mass spreading in the warm water sphere of the eastern subtropical North Atlantic. Wassermassenausbreitung in der Warmwassersphaere des subtropischen Nordostatlantiks." Germany.
@misc{etde_7802351,
title = {Water mass spreading in the warm water sphere of the eastern subtropical North Atlantic. Wassermassenausbreitung in der Warmwassersphaere des subtropischen Nordostatlantiks}
author = {Stramma, L}
abstractNote = {Geostrophic transports in the eastern subtropical North Atlantic computed from historic hydrographic data and recent CTD measurements show a mean transport in the subtropical gyre of 11(+-1.6) x 10/sup 6/m/sup 3/s/sup -1/ in the upper 1000 m between 35/sup 0/W and the African coast. The dynamic method was used in conjunction with a conservation of mass scheme to determine the level of no motion. This level lies at the 1200 m depth near the Azores and drops to 1500 m in the tropics. The main inflow enters south of the Azores as a relatively narrow current, turns southward at the latitude of Madeira and then widens. Three current bands transport the water southward. North of the Cape Verde Islands, the current turns westwards. This part of the North Equatorial Current extends more to the south in the upper 200 m than in the 200-800 m layer. The Portugal current, between the Azores and the Portuguese coast, which is thought by some authors to be strong, is seen here as a relatively weak flow. Maps of potential vorticity derived from smoothed density profiles are consistent with the general pattern of geostrophic transport. At 24/sup 0/N one third of the total geostrophic southward transport of the recirculation and one third of the temperature flux is transported in the eastern Atlantic east of 35/sup 0/W.}
place = {Germany}
year = {1984}
month = {Jan}
}