High resolution tow-yo observations obtained during the OPTOMA21 cruise are used to examine finestructure and microstructure processes in a strong coastal jet which was observed off the coast of Northern California in July, 1986. Results from a combined CTD and XBT survey reveal that the jet is baroclinic and has geostrophic velocity field extending to at least 500 m. The jet has a horizontal scale of about 40 km and ...
An unanticipated observation during the Coastal Transition Zone (CTZ) experiment is the occurrence of layers of high concentrations of phytoplankton at depths often greatly exceeding the euphotic zone. These layers are found both near shore and offshore within a productive coastal upwelling system off northern California and are often observed in a strong offshore jet that was present in the CTZ study area in 1988. We explore the hypothesis that ...
Observations during the Coastal Transition Zone (CTZ) experiment in summer, 1988 reveal the presence of deep phytoplankton layers in a coastal upwelling system. The layers occur throughout the CTZ study area, including a strong baroclinic jet which was present over the period of the experiment. Based on a variety of bio-optical, hydrographic, and geochemical indicators, it is concluded that the water masses associated with the layers result from subduction processes. ...
Frontal instabilities were observed along a density front on the cyclonic boundary of an upwelling filament which formed north of Pt. Arguello, California in October 1983. Observations of the instabilities were conducted using satellites sea surface temperature images and in situ sampling. The instabilities formed on the southern (cyclonic) boundary of the filament at a wavelength of about 20 km and consisted of two lobes, one warm and one cool, ...
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