Three deep-sea subsurface moorings, each equipped with five current meters at depths from 150m below the surface to 200m above the bottom, were deployed off Northern California from September 1984 to July 1985 as part of the OPTOMA program. The triad of moorings, centered near 38.5°N, 125°W, had mutual separations...
The area near Point Arguello has long been recognized as a location of strong
upwelling. A tongue of biologically active waters was observed in the earliest studies of
this region (Sverdrup and Allen, 1939). More recently, satellite estimates of chlorophyll by
the Coastal Zone Color Scanner (CZCS) on Nimbus-7 have...
The effects of wind forcing on coastal ocean circulation are studied using a
numerical modeling approach. The first region of interest is on the North Carolina
shelf, where the Coastal Ocean Processes (CoOP) Inner Shelf Study (ISS) took place
during August - November 1994. ISS observations are used to initialize,...
As part of the SuperCODE project, three hydrographic cruises were conducted
off Oregon and California in July 1983, and January to February 1984,
and April 1984. CTD observations were made near Coos Bay at 43°13'N during 12
July 1983 and 31 January 1984, and off Newport at 44°39'N on 11-12...
As part of the SuperCODE and CODE projects, two hydrographic cruises were conducted off Oregon and California in January and April 1984. CTD sections across the continental shelf and slope were made near Coos Bay at 43°13'N, off Crescent City at 41°54%, off Eureka at 40°51%, along the Arena and...
A large-scale west coast shelf experiment called SuperCODE
was conducted off Oregon and California between February 1981
and April 1984. Current and temperature measurements were made
from subsurface arrays off Coos Bay (43°N), Crescent City
(42°N), Eureka (41°N), Half Moon Bay (37.5°N) and Purisima
Point (34.70), between February 1981 and...
As part of the U. S. GLOBEC NorthEast Pacific Program we made repeated seasonal hydrographic surveys in the northern California Current system (Figure 1) between July 1997 and September 2003. These surveys included early spring sampling along a pair of hydrographic sections, one north (at 44.6ºN) and one south (at...
In eastern boundary current upwelling ecosystems, mesoscale circulation features such as eddies and upwelling filaments play a prominent role in the transfer of water and the associated plankton from the productive nearshore to the oligotrophic deep sea. The relationship between mesoscale circulation, zooplankton distributions, and the across-shelf transport of coastal...
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...
Within systems characterized by substantial spatial and temporal variability, abundances of organisms tend to be higher in localized areas. Within the northern California Current system, the identification of such marine, biological hotspots would be of great importance to resource managers, conservationists, and research planners, and is consequently a growing area...
Several current meter moorings were deployed over the continental margin of Peru along 5° and 10°S to study the Peru current system. The observation period from November 1981 to March 1985 covered the occurrence of El Nino 1982-83. This report presents the six-hourly low-passed data sets of each mooring. Progressive...
As part of the Coastal Ocean Processes (CoOP) project Coastal Ocean Advances in Shelf Transport (COAST), this was the second of two cruises in 2001 to study cross-shelf transport processes in a wind-driven coastal ocean. The project includes field experiments off the Oregon coast and coordinated ocean circulation/ecosystem and atmospheric...
As part of the Coastal Ocean Processes (CoOP) project Coastal Ocean Advances in Shelf
Transport (COAST), this was the first of two cruises in 2001 to study cross-shelf transport
processes in a wind-driven coastal ocean. The project includes field experiments off the Oregon
coast and coordinated ocean circulation/ecosystem and atmospheric...
As part of the Peru Currents study, CTD observations were made off the
coasts of Peru and Ecuador between 3°N and 17°S from the R/V Wecoma,
February-March 1983 and March-April 1985, and from the R/V Endeavor,
November-December 1983 and April-May 1984. Repeated CTD sections were
occupied within 300 km of...
Temperature, salinity, density and turbulent dissipation profiles measured using the Rapid Sampling Vertical Profiler during the Coastal Transition Zone Experiment, July 1988.
CTD observations were made in the Code region near Pt Arena on the northern California coast at 39°N, off Purisima Pt. at 34°45'N and off Crescent City at 41°54'N, during 25 April - 7 May 1981. The observations in the Code region included four repeated sections along the Central Line,...
Surface drifters were depldyed and tracked over the continental shelf and upper continental slope off central California between Point Conception and Point Sur. The drifters were deployed and tracked from aircraft by Aero-Marine Surveys, Inc. under subcontract to Raytheon Service Company as part of the Central California Coastal Circulation Study...
During some of the CODE mooring deployment and recovery cruises, CTD
observations were made on an ancillary basis. In conjunction with the recovery
of the CODE-2 array, CTD observations were made during 3-5 August
(CODE-2 Leg 10) and 19 August (CODE-2 Leg 13). The CTD observations were
made alongside current...
CTD observations were made in the CODE region between Pt. Arena (39°N) and Pt. Reyes (38°N) during 17 March - 4 April 1982. The observations were along three sections: Code Central, Code - 2 Central, and Irish Gulch Lines; and alongside seven current meter moorings.
Maximum sampling depth was 500...
CTD observations were made in the CODE region between Pt. Arena (39°N) and Pt. Reyes (38°N) during 28 February - 1 March 1982. The observations were made along three sections: the Arena Line, the North Line and the Code Central Line. An additional single CTD cast was made off Eureka...
CTD observations were made in the Code region near Pt. Arena on the northern California coast at 39°N, off Crescent City at 41°54 1 N, off Half Moon Bay at 37°25'N and off Pt. Purisima at 34°45'N during 2-13 July 1981. The observations in the Code region included three repeated...
CTD observations were made in the Code region near Pt. Arena on
the northern California coast at 39°N, off Five Mile Point at 43°13'N,
off Crescent City at 41°54'N, and off Half Moon Bay at 370 25'N,
during 17-29 May 1981. The observations in the Code region included
six repeated...
This is the first of two technical reports derived from the dissertation
by Yao, Neng-Chun titled "Bispectral and Cross-bispectral Analysis
of Winds and Currents off the Oregon Coast. " In this first technical
report we give the theoretical development of the rotary component
approach to the bispectrum and cross-bispectrum among...
Inner-shelf circulation and mechanisms of across-shelf transport of water masses were examined using seven years of observations collected by the Partnership for Interdisciplinary Studies of Coastal Oceans (PISCO) program, a long-term monitoring effort along the central Oregon coast. Since 1998, moored velocity and hydrographic measurements have been obtained during the...
CTD observations were made over the continental shelf and upper continental slope from the coast to approximately 60 km off central California between latitudes 34°N and 37.5°N. The measurements were made by Raytheon Service Company as part of the Central California Coastal Circulation Study sponsored by the Minerals Management Service....
Wecoma cruise W8807A was conducted in late July and early August 1988 as part of the Coastal Transition Zone project. CTD observations were made over a standard grid in the coastal transition zone off northern California between 37°N and 39.5°N that was occupied repeatedly during June, July and August; this...
Wecoma cruise W8706A was conducted in June 1987 as part of the pilot study for the Coastal Transition Zone project. CTD observations were made in the coastal transition zone off northern California between 37.5°N and 41.5°N and along 43°13'N off Coos Bay, Oregon. Altogether 133 stations were completed successfully. They...
Wecoma cruise W8702B was conducted in February 1987 as part of the pilot study for the Coastal Transition Zone project. CTD observations were made in the coastal transition zone off northern California between 37.5°N and 4l.5°N. Stations were planned along three alongshore transects, at distances of 60, 90 and 150...
CTD observations were made over the continental shelf and upper
continental slope from the coast to approximately 60 km off central California
between latitudes 34°N and 37.5°N. The measurements were made by Raytheon
Service Company as part of the Central California Coastal Circulation Study
sponsored by the Minerals Management Service....
CTD observations were made over the continental shelf and upper
continental slope from the coast to approximately 60 km off central California
between latitudes 34°N and 37.5°N. The measurements were made by Raytheon
Service Company as part of the Central California Coastal Circulation Study
sponsored by the Minerals Management Service....
CTD observations were made over the continental shelf and upper
continental slope from the coast to approximately 60 km off central California
between latitudes 34°N and 37.5°N. The measurements were made by Raytheon
Service Company as part of the Central California Coastal Circulation Study
sponsored by the Minerals Management Service....
Using the hydrographic data collected by the ACONA from June
1961 to May 1963, the Oregon coastal front has been examined. Representative
sigma-t surfaces were chosen to delineate the front, and
changes in position of these surfaces with time were used to obtain
zonal flow rates for the frontal and...
As part of the Peru Currents study, CTD observations were made between February 1983 and April 1985 between 3° N to 17° S off the coasts of Peru and Ecuador. Vertical sections of temperature, salinity and sigma-theta vs
depth from 0 to 625 m are presented for each section completed...
The Northern California Current (NCC) ecosystem exhibits extreme seasonal, interannual and interdecadal shifts in the abiotic environment and shifts in primary and higher production. This variability is also apparent in the spatial structure of the ecosystem with nearshore-shelf waters (<150 m isobath) being highly productive and having a different community...
An empirical statistical model is developed that relates the non-tidal motion of the ocean surface currents off the Oregon coast to forecasts of the coastal winds. The empirical statistical model is then used to produce predictions of the surface currents that are evaluated for their agreement with measured currents. Measurements...
First-order analyses of wind and current time series obtained from a Totem buoy off the Oregon coast during 1970 are presented. In addition, winds at Totem are compared with winds recorded simultaneously at Newport, Oregon.
CTD observations were made along the CODE Central Line, extending offshore toward 225°T from the California coast at 38°40'N, during 12-14 April, 1981. The complete section with nine stations was occupied twice; the offshore portion was occupied three times. The maximum sampling depth was 1000 m. This report includes a...
A summary of the first year of the THEMIS observation program is presented. The observations were made from November, 1968 to November, 1969. The primary measurements were time series of current velocity with supplementary data of wind velocity. The emphasis is on the methods of observation and the procedures used...
Ocean acidification (OA) has emerged as an important focus of research and policy in this decade. Ocean acidification specifically refers to changes in the inorganic carbon system in the ocean resulting from its absorption of human-released CO₂ from the atmosphere. Anthropogenic atmospheric CO₂ levels are rapidly increasing; much of this...
We present velocity observations from a shipboard acoustic Doppler current profiler (ADCP) on R/V Wecoma during cruise W0105c (23 May to 13 June 2001). The cruise was a component (Survey I) of the Coastal Ocean Advances in Shelf Transport (COAST) experiment. The ADCP was an RD Instruments hull-mounted 153.6-kHz narrowband...
We present velocity observations from a shipboard acoustic Doppler current profiler (ADCP) on
R/V Wecoma during cruise W0301b (19 January - 3 February 2003). The cruise was a component
(Survey III) of the Coastal Ocean Advances in Shelf Transport (COAST) experiment. The
ADCP was an RD Instruments hull-mounted 153-kHz narrowband...
We present velocity observations from a shipboard acoustic Doppler current profiler (ADCP) on
R/V Wecoma during cruise W0108a (6-25 August 2001). The cruise was a component (Survey
II) of the Coastal Ocean Advances in Shelf Transport (COAST) experiment. The ADCP was an
RD Instruments hull-mounted 153-kHz narrowband unit. Data were...
This report documents the oceanographic and meteorological measurements made by the Mooring Observations component of the Coastal Ocean Advances in Shelf Transport (COAST) project during the upwelling experiment from May to August 2001. The focus of COAST is to study the cross-shelf transport processes in a wind-driven system by making...