Eight years (1994-2000) of data from the TOPEX/Poseidon satellite altimeter
are used to investigate the variability of the sea surface height and geostrophic
velocity of the California Current system. The TOPEX/Posiedon satellite measures
SSH along an exact-repeat set of groundtracks with a 10-day repeat cycle.
In the domain studied here...
Nearshore hypoxia within the Northern California Current (NCC) system is a seasonal phenomenon caused by coastal upwelling and occurs mainly during late-summer and early fall. The effects of low oxygen levels on fish and invertebrate communities, particularly during early-life history stages, however, are poorly known for this area. I investigated...
A method is described for determining the absolute dynamic topography of the sea surface. Using hydrographic and wind data obtained in 1963, the surface topography and the horizontal and vertical mass transports off the southeast Arabian coast during the summer monsoon are calculated. As indicated by the calculations, upwelling occurs...
Hydrographic data and drogue observations were used to describe
the circulation and water masses in the upper 500 meters of
the region of the entrance to the Gulf of California in the early spring
of 1970.
The thermohaline structure of the water and the general circulation
in the vicinity of...
The Oregon continental shelf waters are typically characterized by four to five major upwelling events that occur between May and October. The upwelled water is rich in nutrients, which fuels an increase in phytoplankton biomass. The onset of El Nino, however, can disrupt the normal physical processes along the Oregon...
Variable ocean conditions can greatly impact lower trophic level prey assemblages in marine ecosystems, with effects propagating up to higher trophic levels. Our goal was to better understand how varying ocean conditions influence diets and niche overlap among a suite of low- to mid trophic level predators. We studied the...