Using the C-vector method to derive the three-dimensional circulation pattern near the East Greenland Polar Front.
Chu, Peter C.
Bourke, Robert H.
MetadataShow full item record
The C-vector method is used to determine the three-dimensional pseudo-vorticity field of the East Greenland Current by using a CTD data set acquired during the 1984 Northwind cruise. The value of the ageostrophic pseudo- vorticity, the total (geostrophic and ageostrophic) pseudo vorticity and the vertical component of the C-vector curl, Psi, can be calculated by the C-vector method. From these values the pseudo-vorticity can be investigated for the East Greenland Current. Additionally, the positive and the negative vertical motion at each level can be investigated from the Psi value. A two-cell structure with downward motion around the East Greenland Polar Front was found. The C-vector method also demonstrates that the vertical circulation induced by an anticyclonic gyre and the cross-coastal circulation generated by the surface wind can be depicted.
Approved for public release; distribution is unlimited.
Showing items related by title, author, creator and subject.
Montenegro, Gonzalo (Monterey, California. Naval Postgraduate School, 1993-03);Hydrographic data has traditionally been used only to determine dynamical features, specifically dynamic topography and geostrophic currents relative to an assumed level of no motion. However, the assumption of geostrophic ...
Kuo, Hung-Chi; Nuss, Wendell A. (1995-03);The quasigeostrophic geopotential tendency equation is derived using P vectors in both pressure and entropy coordinates. This vector form of the geostrophic forcing in the geopotential tendency equation is similar to ...
Bachmann, Eric R.; McGhee, Robert B.; Yun, Xiaoping; Zyda, Michael J.; McKinney, Douglas L. (The United States of America as represented by the Secretary of the Navy, Washington, DC (US), 2006-08-08);One embodiment the invention includes a method of determining an orientation of a sensor. The method includes measuring a local magnetic field vector and a local gravity vector and using those measurements to determine ...