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Aspects Of The Ecology Of The Mesopelagic Fish Gonostoma Elongatum (Gonostomatidae, Stomiiformes) In The Eastern Gulf Of Mexico, Thomas M. Lancraft, Thomas L. Hopkins, Joseph J. Torres
Aspects Of The Ecology Of The Mesopelagic Fish Gonostoma Elongatum (Gonostomatidae, Stomiiformes) In The Eastern Gulf Of Mexico, Thomas M. Lancraft, Thomas L. Hopkins, Joseph J. Torres
Marine Science Faculty Publications
Gonostoma elongatum is an important mesopelagic fish found throughout the world at subtropical-tropical latitudes. This study examined its distribution, abundance and life history in the eastern Gulf of Mexico. The species was a strong diel migrator, found from 25 to 325 m at night and from 425 to 725 m during the day with small fish occurring shallower than large fish. Numerical abundance and biomass were high, rivaling the dominant species of myctophids in the Gulf of Mexico. There no obvious seasonal fluctuations in population abundance. G. elongatum is a protandric hermaphrodite whose population breeds throughout the year and females …
Instability Waves In The Equatorial Atlantic Ocean, Robert H. Weisberg, T. J. Weingartner
Instability Waves In The Equatorial Atlantic Ocean, Robert H. Weisberg, T. J. Weingartner
Marine Science Faculty Publications
Evidence is presented for the generation of planetary waves by barotropic instability within the cyclonic shear region of the Atlantic Ocean's South Equatorial Current (SEC). Immediately following the springtime intensification of the southeast trade wind, which accelerates the SEC westward, a packet of waves with central periodicity of around 25 days is observed lasting for about three cycles. Independent wavenumber analyses on 1983 and 1984 data give newly identical zonal wavelengths and phase speed estimates of around 1100 km and −50 cm s−1. The waves are anisotropic and spatially inhomogeneous with generation confined primarily to the mixed layer. …
Vertical Structure Of Low-Frequency Variability In The Eastern Equatorial Pacific Ocean, T. Y. Tang, Robert H. Weisberg, D. Halpern
Vertical Structure Of Low-Frequency Variability In The Eastern Equatorial Pacific Ocean, T. Y. Tang, Robert H. Weisberg, D. Halpern
Marine Science Faculty Publications
The vertical structure of low frequency velocity and temperature variability in the eastern equatorial Pacific Ocean is examined using surface and subsurface moored current meter data from 0°, 110°W between 20 and 3027 m depths over the period 30 March 1980 to 2 February 1981. Three methods of analysis are employed: vertical coherence, empirical orthogonal functions, and linear least-squares dynamical mode decompositions. Direct evidence is given for the existence of first baroclinic mode Kelvin waves in the east component of velocity and vertical displacement (estimated from temperature) in that the vertical displacement is coherent and in phase over the water …