OLR (1986) 33 (3) A. Physical Oceanography 205

Strait, sntemte measurements of Gulf Loop Current area, and regional sea level. J. geophys. Res., 90(C5):9089-9096.

Net drift for 3 years is to the SSW at an average velocity of 1.8 cm/s; sustained southward flows at intervals of 8 months, which persisted for several months each, have average velocities of 5 cm/s, with randomly spaced bursts as high as 15 cm/s. Com- parison with weekly areal coverage of the Gulf Loop Current shows little covariation, except that 8 months is typical of some anticyclonic eddy gen- eration. There is little coherence of sill depth velocities with Naples sea level at subtidal fre- quencies, but with Miami there is coherence at several frequencies, notably 38 -1 and 19 -j cycles/day. No sernidiurnal, inertial, or fortnightly energy is observed above the background continuum. NOAA, Miami, FL, USA.

86:1413 McCreary, J.P. and P.K. Kundu, 1985. Western

boundary circulation driven by an alongshore wind: with application to the Somali Current system. J. mar. Res., 43(3):493-516.

The linear, continuously stratified, eastern-boundary model of McCreary (1981) is extended to apply to a western ocean boundary and to wind fields with curl The model has vertical and horizontal mixing; solutions are represented as expansions in vertical modes, and the dynamics of low-order and high- order modes are very different. Low-order modes tend to be in Sverdrup balance in the interior ocean, and to form a Munk layer at the coast. High-order modes are in Ekman balance in the interior ocean, and the coastal balance is two-dimensionai. Nova Univ., Oceanogr. Center, 8000 North Ocean Dr., Dania, FL 33004, USA.

86:1414 Odamaki, Minoru, 1985. Coastal current off Misawa,

northeast coast of Japan. Rept hydrogr. Res., Tokyo, 20:117-138. (In Japanese, English ab- stract.) Maritime Safety Agency, Tokyo, Japan.

86:1415 Olson, D.B., R.W. Schmitt, M. KenneUy and T.M.

Joyce, 1985. A two-layer ¢[~gnoslk model of the long-term physical evolution of warm-core ring 82B. J. geophys. Res., 90(C5):8813-8822.

Shipboard data on a single Gulf Stream warm-core ring are composited in a cylindrical coordinate system following the motion of the ring. Measure- ments of 10°C isotherm depth are used with a two-layer model of the ring's structure to compute gradient current, kinetic energy, available potential

energy, and potential vorticity in the ring. The momentum-related quantities are compared with surface-derived velocity measurements by using an acoustic Doppler log. The volume of waters carried with the ring are also computed on the basis of thermal data. The changes in these quantities as the ring evolves are discussed. RSMAS, Univ. of Miami, FL 33149, USA.

86:1416 Schmitt, R.W. and D.B. Olson, 1985. Wintertime

convection in warm--core rings: thermoefine ven- tilation and the formation of mesoscale lenses. J. geophys. Res., 90(C5):8823-8837.

Large heat losses from warm-core ring 82B during February, March, and April 1982 formed a 400-m thick thermostad in the center of the ring. Two different models were constructed to simulate the formation of the thermostad water mass properties: a one-dimensional vertical model forced with a meteorological time series and a volumetric mixing model with climatological input. Both models in- dicate that a flux of slope water into the ring is necessary to yield the observed thermostad salinities. The subsequent slow decay of the ring core in the slope water suggests that such winter-convected rings can easily maintain the 'warm band' water identified by Wright and Parker (1976). The re- absorption of winter-cooled warm-core rings by the Gulf Stream is an important eddy ventilation mechanism for the Sargasso Sea. WHOI, Woods Hole, MA 02543, USA.

86:1417 Schott, F., A.S. Frisch, K. Leaman, G. Samuels and

I.P. Fotino, 1985. I-ligh-frequeney Doppler radar measurements of the Florida ~ t in summer 1983. J. geophys. Res., 90(C5):90(O-9016.

Surface currents measured by high-frequency Dopp- ler (HF) radar at the western side of the Florida Straits are compared with simultaneous direct measurements by moored current meters and by the PEGASUS profiling system. Means and standard deviations of the downstream current compare well in the northern portion of the region; HF radar measurements in the southern part had a bias causing a significant mean shear 20 km offshore. Comparisons with cable measured transports of the Florida Current were inconclusive. HF radar ap- pears useful for identifying near-surface patterns of eddies and meanders, but is doubtful for derived quantities such as energy fluxes and vorticity. RSMAS, Univ. of Miami, FL, USA. (who)