Canyon Currents
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Currents In Monterey Submarine Canyon
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Author : John Edward Hollister
language : en
Publisher:
Release Date : 1975
Currents In Monterey Submarine Canyon written by John Edward Hollister and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Ocean currents categories.
Time series were obtained from two current meters near bottom on one mooring in Monterey Submarine Canyon. These records were analyzed to determine the general character of the currents, the volume transport at different levels above the canyon floor, the power spectral estimates of the upcanyon and cross-caynon directional components, and the coherence between directional components. Current speed variations appeared as a series of peaks occurring every 5 to 6 hr with maxima of 17 to 21 cm/sec. Current directions oscillated with a discernible period of about 12 hr. Currents 30 m above the bottom were aligned nearly along the canyon axis; currents 60 m above the bottom were nearly perpendicular to the canyon axis. The spectral analysis indicated tides as a major driving force of the deep currents, but also indicated the presence of other forcing functions, possibly internal waves, with shorter periods. The coherence between instruments was low, suggesting the possible presence of a near-bottom boundary layer, or that significant signal deterioration was caused by noise.
Currents In Submarine Canyons And Other Seavalleys
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Author : Francis Parker Shepard
language : en
Publisher:
Release Date : 1979
Currents In Submarine Canyons And Other Seavalleys written by Francis Parker Shepard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Science categories.
Canyon Currents
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Author :
language : en
Publisher:
Release Date : 1996*
Canyon Currents written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996* with Grand Canyon National Park (Ariz.) categories.
The Monterey Submarine Canyon California Moored Array Data Report
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Author : Kaye Kinoshita
language : en
Publisher:
Release Date : 1995
The Monterey Submarine Canyon California Moored Array Data Report written by Kaye Kinoshita and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Geology categories.
Observations And Modeling Of The Internal Tide In A Submarine Canyon
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Author : Emil T. Petruncio
language : en
Publisher:
Release Date : 1996
Observations And Modeling Of The Internal Tide In A Submarine Canyon written by Emil T. Petruncio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Science categories.
Shipboard ADCP and CTD measurements were conducted in Monterey Submarine Canyon in April and October 1994 to determine the propagation characteristics and energy levels of the semidiurnal internal tide. The measurements reveal a bottom intensified internal tide propagating energy up canyon. The region of strongest motion is in a beam 150-200 m thick, centered approximately 150 m above the Canyon floor. Along canyon baroclinic M2 currents are typically 15-20 cm/s, an order of magnitude larger than the estimated barotropic tidal currents. In April 1994, the internal tidal beam is well described by a progressive wave, while in October 1994, the signal is standing along and perpendicular to the beam. The Princeton Ocean Model was used to study the generation and propagation of semidiurnal internal tides in submarine canyons and to investigate their sensitivity to canyon shape.
The Shelf Slope Transition Canyon And Upper Slope Sedimentary Processes On The Southern Margin Of Georges Bank
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Author : Page C. Valentine
language : en
Publisher:
Release Date : 1987
The Shelf Slope Transition Canyon And Upper Slope Sedimentary Processes On The Southern Margin Of Georges Bank written by Page C. Valentine and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Continental shelf categories.
Currents Observed In Juan De Fuca Submarine Canyon And Vicinity 1971
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Author : Glenn Albert Cannon
language : en
Publisher:
Release Date : 1972
Currents Observed In Juan De Fuca Submarine Canyon And Vicinity 1971 written by Glenn Albert Cannon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Ocean currents categories.
Description is given of the experiment and of the current measurements and related data made in the Juan de Fuca submarine canyon, on the surrounding continental shelf, and in the mouth of the Strait of Juan de Fuca during October-November 1971. Flow in the canyon, in general, substantiated speculation in Cannon (1972). Inertial oscillations were observed in the surface layer over the shelf. Outflow was observed in the mid to bottom waters in the mouth of the Strait for periods of several days corresponding with out-canyon flow. Bottom currents on the shelf flowed toward the canyon from north and south.
Apparent Surface Currents Over The Monterey Submarine Canyon Measured By The Method Of Towed Electrodes
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Author : Karl Arthur Mahumed
language : en
Publisher:
Release Date : 1975
Apparent Surface Currents Over The Monterey Submarine Canyon Measured By The Method Of Towed Electrodes written by Karl Arthur Mahumed and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Ocean currents categories.
Five data cruises were taken on board R/V ACANIA to study the effect on the Geomagnetic Electrokinetograph (GEK) of various environmental factors, including wings, tides, and internal waves, over the Monterey Submarine Canyon. An in situ current meter was used successfully on one occasion to obtain data to establish a k-factor for the GEK in the Submarine Canyon, and to directly measure the particle velocities of internal waves. The observed surface currents measured with the GEK all exhibited little or no correlation with winds and tides. The flows were all generally southerly; their averages agreed with previous measurements made with the GEK. This direction of flow was opposite to the generalizations of Scott and possibly agreed with those of Pirie, depending upon the placement of one of his eddies. The k-factor for the GEK could not be determined because currents measured directly in the thermocline were found to be not correlated with the GEK measurements. However, the average current speeds were in reasonable agreement with currents measured at other times in Monterey Bay, leading to the conclusion that k cannot be much greater than the assumed value of 1.0. (Author).
Near Bottom Currents In Monterey Submarine Canyon And On The Adjacent Shelf
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Author : William Albert Caster
language : en
Publisher:
Release Date : 1969
Near Bottom Currents In Monterey Submarine Canyon And On The Adjacent Shelf written by William Albert Caster and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Ocean currents categories.
Near-bottom currents in Monterey Submarine Canyon and the adjacent shelf were collected using Savonius current meters. Simultaneous measurements were made with one current meter on the shelf at a depth of 91 meters and one meter located in the Canyon at 366 meters. Another record was taken in the Canyon at the 366-meter location. Current speed, current direction and water temperature were recorded continuously for approximately seven days in each record. First-order statistics were calculated and plotted for these time-series data. Scatter diagrams, progressive vector diagrams and power spectra were also computed and analyzed for the records collected during this study and for records of sufficient length from previous investigations. Net current set was in a cross-canyon direction for many of the records; however, the currents in the Canyon oscillated as reported in previous investigations. The oscillations were not as evident on the shelf record. Mean and maximum current speeds recorded in the Canyon were 10 and 51 cm/sec, respectively. On the shelf these values were 7 and 25 cm/sec. Observed values of net current set and volume transport are related to Monterey Bay seasonal water conditions. (Author).
An Investigation Of Near Bottom Currents In The Monterey Submarine Canyon
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Author : John Joseph Dooley
language : en
Publisher:
Release Date : 1968
An Investigation Of Near Bottom Currents In The Monterey Submarine Canyon written by John Joseph Dooley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Oceanography categories.
An investigation of near-bottom currents in the head of Monterey Submarine Canyon was conducted between March 1967 and May 1968. Continuous observations of water temperature, current speed and direction were obtained over periods ranging from 5 hours to 162 hours using an in situ Savonius rotor current measuring system. Basic statistical parameters and power spectra were calculated for each record. These revealed an average current speed of about 0.23 knot (standard deviation of 0.17 knot), and a current direction which indicates flow reversals predominantly along the canyon axis. Current and water temperature oscillations indicated a strong semidiurnal component. Water temperature changes also showed seasonal variation that agrees with the seasonal means of the region. Current speeds as high as 1 knot were measured. (Author).