. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography July 1975 R. MOLINARI AND A. D. KIRWAN, JR 485 88° 87' 86° 85° ltJOOfro 84J CUBA. e °4?< 204 *v. » E -NY- LEG 1 J_l_ o ' 202 203 204 *-* 0030 0030 0030 4. 203 22° 20c 19' -18° 1 ) ~ I^FTurneffie ,' • J J Island / 202 ': & ; I ' i lObOfm 1 1 | 1 88° 87° 86° 85° 84° 17° Fig. 1. Diagram of the drifter trajectories, including speeds for legs 1 through 4. The four legs were occupied in chrono- logical order. The times are in Julian Day/Hour. The i
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography July 1975 R. MOLINARI AND A. D. KIRWAN, JR 485 88° 87' 86° 85° ltJOOfro 84J CUBA. e °4?< 204 *v. » E -NY- LEG 1 J_l_ o ' 202 203 204 *-* 0030 0030 0030 4. 203 22° 20c 19' -18° 1 ) ~ I^FTurneffie ,' • J J Island / 202 ': & ; I ' i lObOfm 1 1 | 1 88° 87° 86° 85° 84° 17° Fig. 1. Diagram of the drifter trajectories, including speeds for legs 1 through 4. The four legs were occupied in chrono- logical order. The times are in Julian Day/Hour. The intervals (A, B) and (C, D) refer to the part of trajectory over which potential vorticity was conserved (See Fig. 9). shear is accounted for, serious biasing of the data will calculated from occur. The series of components of the horizontal position vectors for drifter i is denoted by a, and /3,. From this it is easy to calculate the position vector with respect to the center of mass. For each successive time interval At, the velocities [the left-hand side of (1)J can be calculated from spline functions or finite differences such as Ui(t) = [«,(/+At) -<*,•(/- A/)]/2A/1 (2) Vi(t) = [fii(t+At) -/?,(/ - At)2/2At I Here U and V, the average velocity components or the velocity of the center of mass at any time /, are U=(ZUi)/n) V-dt Vi)/n t=i (3) The g and h functions and D, N, S and f can be com- puted by noting that at each time, the total kinetic energy per unit mass of the cluster due to small-scale turbulence is KE=£[^+/*,2]/2. (4) i=l 661. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Atlantic Oceanographic and Meteorological Laboratories; Pacific Oceanographic Laboratories; United States. Environmental Science Services Administration. Research Laboratories; Environmental Research La
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