Hydrographic Data from the Area of the Monterey Submarine Canyon, 1951-1955

Hydrographic Data from the Area of the Monterey Submarine Canyon, 1951-1955
Author: Rolf Ling Bolin
Publisher:
Total Pages: 242
Release: 1964
Genre: Hydrography
ISBN:
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In an attempt to establish correlations between variations in the abundance of certain marine organisms and fluctuations in hydrographic variables, a program was initiated late in 1950 that involved periodic sampling of water and plankton from the surface to depths of 1000 meters. The physico-chemical variables of temperature, salinity, oxygen, silicate and phosphate were determined at intervals from the surface to a depth of 1000 meters for the first 2 years of the program, and to 900 meters subsequently when the loss of some of the hydrographic wire necessitated limiting the depth of the casts. This report presents the hydrographic data. (Author).

A Study of Time Variability of Surface Currents at a Point in Monterey Bay

A Study of Time Variability of Surface Currents at a Point in Monterey Bay
Author: Harry M. Howton
Publisher:
Total Pages: 236
Release: 1972
Genre: Oceanography
ISBN:
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The geomagnetic electrokinetograph (GEK) was used to measure surface currents near the center of Monterey Bay during six separate 24-hour periods from May through July, 1972. An average of 244 current vectors were derived for each cruise. The mean currents from these cruises are all southerly and ranged from 4.1 cm/sec to 20.4 cm/sec. The average of these mean currents is 12.1 cm/sec toward 163T. These values were compared with individual currents derived from dynamic topographies from the same period. Diurnal and semi-diurnal variations of the current were studied after subjecting the data to a Fourier analysis. It was concluded that there must be at least an indirect coupling of the ocean currents with the semi-diurnal tide at the data point. The diurnal component also is important; it may be tidal or inertial, or merely related to the passage of the sun. (Author).

A Photographic Reconnaissance of the Microrelief in the Monterey and Carmel Submarine Canyons, California

A Photographic Reconnaissance of the Microrelief in the Monterey and Carmel Submarine Canyons, California
Author: John Alexander Jensen
Publisher:
Total Pages: 298
Release: 1976
Genre: Photography in oceanography
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Over 500 underwater photographs were taken in the Monterey and Carmel submarine canyons for the purpose of studying their microrelief. The pictures indicated that a variety of biological and physical differences exist not only within each canyon but also between the two nearby canyons. In MOnterey Canyon are to be found fine grain sediments which have been very actively churned by benthic organisms. Few rock outcrops were noted, and definitive evidence of current activity in the form of ripple marks was observed in only one region. Carmel Canyon included generally coarser grain material than Monterey Canyon and showed a marked absence of active burrowing. A large number of rock outcrops was observed and there appeared to be extensive current activity throughout most of the canyon. (Author).

Tidal Oscillations at the Head of Monterey Submarine Canyon and Their Relation to Oceanographic Sampling and the Circulation of Water in Monterey Bay

Tidal Oscillations at the Head of Monterey Submarine Canyon and Their Relation to Oceanographic Sampling and the Circulation of Water in Monterey Bay
Author: William W. Broenkow
Publisher:
Total Pages: 52
Release: 1972
Genre: Monterey Bay (Calif.)
ISBN:
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During a 25-hour hydrographic times series at two stations near the head of Monterey Submarine Canyon, an internal tide was observed with an amplitude of 80 to 115 m in water depths of 120 and 220 m respectively. These large oscillations produced daily variations in hydrographic and chemical parameters that were of the same magnitude as seasonal variations in Monterey Bay. Computed velocities associated with the internal tide were on the order of 10 em/sec, and this tidally induced circulation may have a significant role in the exchange of deep water between Monterey Submarine Canyon and the open ocean.

An Oceanographic Survey of the Coastal Waters Between San Francisco Bay and Monterey Bay, California

An Oceanographic Survey of the Coastal Waters Between San Francisco Bay and Monterey Bay, California
Author: Peter Stephen Labyak
Publisher:
Total Pages: 330
Release: 1969
Genre: Oceanography
ISBN:
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A detailed oceanographic survey of the coastal waters between Monterey Bay and San Francisco Bay, California, was conducted from 10 through 18 May 1969. Measurements of beam transmittance, sound velocity, temperature, and particulate count were obtained. Over 500 water samples were taken for particulate analysis. The optical properties of this region were found to be very complex. The waters appeared to be affected by flow from San Francisco Bay, littoral material, upwelling, and possibly sewage outfalls during the survey. A greater volume of water with low transmissivity and high particle count existed in the northern region of the survey area than in the southern region. An eddy system between Monterey Bay and Point Ano Nuevo was suggested. Approximately 90 percent of the particles affecting beam transmittance were less than 12 microns in diameter. Particle sizes were found to decrease with increased depths. A fairly good correlation of beam transmittance with particle count was observed except in near shore areas. (Author).