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Articles 2131 - 2160 of 2527
Full-Text Articles in Entire DC Network
Some Considerations Of Oxygen Utilization Rates In Puget Sound, Clifford A. Barnes, Eugene E. Collias
Some Considerations Of Oxygen Utilization Rates In Puget Sound, Clifford A. Barnes, Eugene E. Collias
Journal of Marine Research
Concentrationa of dissolved oxygen in tributary basins of the fjord-like Puget Sound region (Washington) have been determined during monthly surveys of water characteristics. By selecting periods when a consideration of conaervative properties suggests that the effects of advection and diffusion are small, the local rates of change in oxygen concentration have been determined; it is assumed that these rates approximate the utilization or consumption rates....
On The Restricted Distridution Of Two Deep-Sea Fishes, Borophryne Apogon And Stomias Colubrinus, Anton F. Bruun
On The Restricted Distridution Of Two Deep-Sea Fishes, Borophryne Apogon And Stomias Colubrinus, Anton F. Bruun
Journal of Marine Research
The restricted distribution of Borophryne apogon and Stomias colubrinus, both bathypalegic fishes, is notable. Although relatively few specimens have been caught to date, there is good evidence to indicate that their geographical distribution is limited. Knowledge about the epipelagic life of the early stages and about the bathypalegic life of the adolescents and adults of these species has been combined with our recent knowledge of ocean currents in the Pacific (including the Cromwell Current) to provide an explanation of their peculiar distribution.
Lead Isotopes In Sea Water And Marine Sediments, Tsaihwa J. Chow
Lead Isotopes In Sea Water And Marine Sediments, Tsaihwa J. Chow
Journal of Marine Research
The lead concentration obtained from sea water samples of San Juan Channel, Washington was 0.2 µg/l or less. Leads isolated from Pacific and Atlantic pelagic clay sediments show an isotopic composition similar to that of manganese nodules from the respective oceans. The Pb206 content in the Atlantic lead was more abundant than that in the Pacific lead. This finding agrees with the postulate that the Atlantic lead was derived from rocks which contained high proportions of old granites and that the Pacific lead was from rocks containing high proportions of relatively young basalts.
Wave Patterns Off Southern California, K. O. Emery
Wave Patterns Off Southern California, K. O. Emery
Journal of Marine Research
Mapping of wave trains during four flights over the ocean off southern California showed the consistent presence of a high 10-second swell from the westnorthwest, of one or two low 3- to 5-second swells from other westerly directions, and of local wind waves; occasionally a low 13-second swell from the west and southwest was also present. Islands reduce the height of swells but produce little discernable crossswell in their lee....
Determination Of Opal In Marine Sediments, Edward D. Goldberg
Determination Of Opal In Marine Sediments, Edward D. Goldberg
Journal of Marine Research
The opal contents of recent marine sediments are ascertained by conversion of the opal to crystobalite by heating and by a subsequent quantitative x-ray diffraction analysis of the crystobalite. An opal stratigraphy is evident in Bering Sea deposits. Further, the opal concentrations appear to be covariant with barium, an element previously suggested as indicative of biological productivity in overlying water masses.
Organic Matter In Sea Water; An Evaluation Of Various Methods For Isolation, Lela M. Jeffrey, Donald W. Hood
Organic Matter In Sea Water; An Evaluation Of Various Methods For Isolation, Lela M. Jeffrey, Donald W. Hood
Journal of Marine Research
Five methods of isolating organic materials from salt solutions are evaluated for applicability in separating organic and inorganic constituents of sea water. A C14-labeled aged algae culture was used as a test solution to determine the effectiveness of various methods of isolating total dissolved organic material. Organic compounds, known to be involved in biological metabolism, were also added to natural sea water to determine the effectiveness of various methods in isolation....
Radium Content Of Carbonate Shells, F. F. Koczy, Heinz Titze
Radium Content Of Carbonate Shells, F. F. Koczy, Heinz Titze
Journal of Marine Research
Radium determinations have been made for shells from Swedish waters, the Mediterranean Sea and the Pacific Ocean. Their Ra/Ca ratio has been estimated and compared to the Ra/Ca ratio in sea water. It was found that, in general, the Ra/Ca ratio is proportional to the Sr/Ca ratio found by Thompson and Chow....
Some Uses Of Antbiotics In Physiological Experiments In Sea Water, S. M. Marshall, A. P. Orr
Some Uses Of Antbiotics In Physiological Experiments In Sea Water, S. M. Marshall, A. P. Orr
Journal of Marine Research
The oxygen content of sea water can be kept constant by use of antibiotics for periods up to more than a fortnight. With living animals present, the bacteriostatic effect probably lasts for a shorter time. Chloromycetin was the most effective antibiotic used; streptomycin was also satisfactory....
Relationship Between Metabolic Rate And Body Size In An Elasmobranch (Squalus Suckleyi) And In A Teleost (Ophiodon Elongatus), Austin W. Pritchard, Elisabeth Florey, Arthur W. Martin
Relationship Between Metabolic Rate And Body Size In An Elasmobranch (Squalus Suckleyi) And In A Teleost (Ophiodon Elongatus), Austin W. Pritchard, Elisabeth Florey, Arthur W. Martin
Journal of Marine Research
A method using polyethylene tubing of various sizes and a flow of water commensurate with the size of the specimen has been employed to determine the resting metabolic rates of large fish. With female dogfish, ranging in size from 0.1-9 kg, at about 13° C, there is a linear regression of log metabolic rate on log body weight with a slope calculated at 0.74. The metabolic rates of ling-cod, ranging in body weight from about 0.2-20 kg, gave a slope of 0.78.
Chemical Composition Of Three Manganese Nodules From The Pacific Ocean, J. P. Riley, Prapas Sinhaseni
Chemical Composition Of Three Manganese Nodules From The Pacific Ocean, J. P. Riley, Prapas Sinhaseni
Journal of Marine Research
Three manganese nodules from the Pacific Ocean have been analysed for 35 elements by using ma.inly spectrophotometric a.nd spectrogra.phic methods. Cu, Co, Ni, Zn, and Pb were found in amounts approaching 1 %, which far exceeds their average concentrations in igneous rocks. On the other hand, elements having readily hydrolysable ions, such as Ga, Sc, Zr, Y, La and Ti, are present only in amounts comparable with their concentrations in igneous rocks....
Comparison Of Light Distribiution Above And Below Water, John E. Tyler
Comparison Of Light Distribiution Above And Below Water, John E. Tyler
Journal of Marine Research
Recent measurements of natural light distribution in homogeneous lake water have revealed interesting and heretofore unrecorded optical effects in the near-surface layers. These effects are graphically described and explained.
Effect Of Coriolis Force On Edge Waves (Ii) Specific Examples Of Free And Forced Waves, Kinjiro Kajiura
Effect Of Coriolis Force On Edge Waves (Ii) Specific Examples Of Free And Forced Waves, Kinjiro Kajiura
Journal of Marine Research
Modification of edge waves due to Coriolis force is examined in terms of two specific problems: dispersion of an initial deformation of the water surface; the forced wave due to a moving atmospheric pressure disturbance. In both cases the scale of the disturbance is an important factor, and the larger the scale the larger the effect of Coriolis force.
The Migration Of Adult Female Blue Crabs, Callinectes Sapidus Rathbun, In Chincoteague Bay And Adjacent Waters, David G. Cargo
The Migration Of Adult Female Blue Crabs, Callinectes Sapidus Rathbun, In Chincoteague Bay And Adjacent Waters, David G. Cargo
Journal of Marine Research
A total of 392 adult female blue crabs were tagged at four different points in the Chincoteague Bay area from 31 July to 7 September 1953. Over a period including June 1954, about 25% were recaptured, mostly to the south of the release points. Only three had moved northward, and only two were recaptured outside the area; one in Delaware Bay and one at Oyster, Virginia. Factors that may influence their movements and some ecological considerations are discussed.
Soluble Iron In Coastal Waters, Taivo Laevastu, Thomas G. Thompson
Soluble Iron In Coastal Waters, Taivo Laevastu, Thomas G. Thompson
Journal of Marine Research
Soluble iron, defined as the amount of the element found in a unit volume of millipore-filtered sea water, after oxidation of organic matter, has been determined on samples collected in insh!Jre waters of the State of Washington. After filtration the samples were oxidized. The particulate matter and its iron content were also determined. Bathophenanthrolene was the reagent used....
Elliptical Polarization Of Submarine Illumination, Alexandre Ivanoff, Talbot H. Waterman
Elliptical Polarization Of Submarine Illumination, Alexandre Ivanoff, Talbot H. Waterman
Journal of Marine Research
Field and laboratory measurements have been made to extend our understanding of submarine elliptically polarized light, which occurs in lines of sight just beyond the critical angle. It is not detectable in bearings of the sun or anti-sun, is strongest within a few centimeters of the surface, is more easily observed with large solar zenith distances, and is not affected by light entering the water at the surface in the line of sight....
Inorganic Suspended Matter In Sea Water, Francis A.J. Armstrong
Inorganic Suspended Matter In Sea Water, Francis A.J. Armstrong
Journal of Marine Research
The suspended matter in sea water has been separated with membrane filters· (down to 0.1 µ A.P.D.); the inorganic fraction, determined by ignition, has been partly analysed. The methods used are briefly described. An appreciable quantity of finely divided claylike material was found, and it is suggested that, by adsorption of organic matter from the water, this may support the bacterial flora. Samples taken regularly from the English Channel show a seasonal variation...
Neurosecretory Cells In The Cirripede, Pollicipes Polymerus J. B. Sowerby, Harold Barnes, Jefferson J. Gonor
Neurosecretory Cells In The Cirripede, Pollicipes Polymerus J. B. Sowerby, Harold Barnes, Jefferson J. Gonor
Journal of Marine Research
A detailed morphological description of neurosecretory cells in the pedunculate barnacle Pollicipes polymerus J. B. Sowerby (Cirripedia) is given. The general anatomy of its central nervous system conforms to that in other pedunculates. Some neurons of the central nervous system are specialized for secretion and are uniformly distributed in all of the ventral ganglia and in the brain.
Control Of Sedimentation And Bottom Configuration By Convection Currents, Lake Washington, Washington, Howard R. Gould, Thomas F. Budinger
Control Of Sedimentation And Bottom Configuration By Convection Currents, Lake Washington, Washington, Howard R. Gould, Thomas F. Budinger
Journal of Marine Research
Lake Washington near Seattle occupies a deep narrow trough sculptured by the Vashon ice sheet, the last continental glacier to invade the Seattle area. Extending along the center of the trough is a broad ridge that stands 5 to 30 feet above narrow valleys on either side. Thus, the trough in cross-section is W-shaped rather than U-shaped, as are most glacial valleys. The sediments in the trough consist of blue clay, locally more than 100 feet thick, overlain by limnic peat or gyttja 5 to 55 feet thick. The blue clay consists of rock flour of meltwater origin and the …
Boundaries In The Theory Of Ocean Currents, Koji Hidaka
Boundaries In The Theory Of Ocean Currents, Koji Hidaka
Journal of Marine Research
Described in this paper is a technique of using artificial water boundaries in theories of ocean currents. As boundary values, geostrophic currents are suggested. This technique may hold promise for other applications in theoretical discussions of ocean currents.
Observations On Inshore Plankton Collected During Summer 1957 At Point Barrow, Alaska, Martin W. Johnson
Observations On Inshore Plankton Collected During Summer 1957 At Point Barrow, Alaska, Martin W. Johnson
Journal of Marine Research
Analyses of 34 net tows, collected July 16 to August 16, 1957 to depths of about 66 m, were concerned ma.inly with the micropla.nkton. The concentration of plankton varied greatly while the composition remained quite uniform….
The Annual Cycle Of Phosphorus And Nitrogen In New England Coastal Waters, Bostwick H. Ketchum, Ralph F. Vaccaro, Nathaniel Corwin
The Annual Cycle Of Phosphorus And Nitrogen In New England Coastal Waters, Bostwick H. Ketchum, Ralph F. Vaccaro, Nathaniel Corwin
Journal of Marine Research
Distributions of phosphorus and nitrogen in New England coastal waters at various times of year are described. In surface waters the nitrate-nitrogen content is sometimes completely exhausted, even though small concentrations (0.2-0.5µg-at/l) of phosphorus are always available. The ratio of concentrations by atoms, N:P, varies in surface waters from maximum values of about 10: 1 to values approaching zero as the nitrate is exhausted....
Sir C. Wyville Thomson's Letters To Staff-Commander Thomas H. Tizard, 1877-1881, Daniel Merriman, Mary Merriman
Sir C. Wyville Thomson's Letters To Staff-Commander Thomas H. Tizard, 1877-1881, Daniel Merriman, Mary Merriman
Journal of Marine Research
These original letters from Thomson to Tizard are concerned with the publication of the results of the CHALLENGER Expedition, as well as the study of the Faroe Channel and the eventual delineation of the Wyville Thomson Ridge with its diversity of "cold and warm area" bottom fauna. They also provide evidence of Thomson's indefatigability as well as certain historical sidelights.
A Damped Kelvin-Wave Of General Form, Joseph Proundman
A Damped Kelvin-Wave Of General Form, Joseph Proundman
Journal of Marine Research
1. Abstract and Introduction. This paper is concerned with a long free progressive wave in a channel of uniform width and depth when there is no component of current transverse to the channel. The density of the water is supposed to be uniform and the rotation of the earth and friction are taken into account.
Particulate Matter In The Oxygen-Minimum Layer, Norris W. Rakestraw
Particulate Matter In The Oxygen-Minimum Layer, Norris W. Rakestraw
Journal of Marine Research
In view of the interest in oxygen distribution in the ocean, it 3eems advisable to bring to light some observations which were made in the l 930's but which were never published….
Growth And Variation In Sea Urchins Of York, Maine, Emery F. Swan
Growth And Variation In Sea Urchins Of York, Maine, Emery F. Swan
Journal of Marine Research
From a three square meter plot of intertidal shore on a rocky point of York, Maine, sea urchins (Strongylocentrotus droebachiensis) were collected on June 28 and 29, 1957 for study of their size-frequency distribution. Test height, test weight, number of wedges in the spines, number of pore-pairs in the ambulacral arcs, number of ocular plates insert, and number of coronal plates have been related to test diameter....
Some Oceanograpidc Characteristics Of A Polluted Inlet In British Columbia, Michael Waldichuk
Some Oceanograpidc Characteristics Of A Polluted Inlet In British Columbia, Michael Waldichuk
Journal of Marine Research
Physical and chemical characteristics of Neroutsos Inlet, British Columbia, in August 1957 are described. Moderately deep, 11 nautical miles long by 0.5 to 1 mile wide, it has been subjected to a prolonged period of waste disposal from a sulphite pulp mill near its head. The mill effluent is discharged on the surface at the shore and is largely confined to a thin surface layer about 5 m deep....
Diurnal Study Of Phytoplankton Pigments: An In Situ Study In East Sound, Washington, Charles S. Yentsch, Robert F. Scagel
Diurnal Study Of Phytoplankton Pigments: An In Situ Study In East Sound, Washington, Charles S. Yentsch, Robert F. Scagel
Journal of Marine Research
The effect of light intensity on the quantities of chlorophyll and carotenoid pigments in a natural marine diatom community has been observed. Marked daily fluctuations in the quantities of these pigments, which showed highest concentrations around mid-day and at night, resulted from changes in quantities within the cells. Rates of synthesis and decomposition throughout the day have been computed. Highest cellular concentrations of chlorophyll and carotenoid pigments corresponded to optimal light intensities for photosynthesis....
The Use Of A Large Capacity Portable Pump For Plankton Sampling, With Notes On Plankton Patchiness, William Aron
The Use Of A Large Capacity Portable Pump For Plankton Sampling, With Notes On Plankton Patchiness, William Aron
Journal of Marine Research
A centrifugal pump with rated capacity of 400 gals./rnin. was used for plankton sampling in Puget Sound. With the ship under way, 50 simultaneous paired hauls were made with the pump and with a 0.5-meter nylon plankton net. The pumped water was passed through a special filtering unit with negligible damage to the plankters. Data show remarkable agreement between catches of fish eggs captured by pump and by tow net....
Extreme Sea Water Temperatures And Densities Along The North Atlantic States During Summer 1955, C. B. Taylor
Extreme Sea Water Temperatures And Densities Along The North Atlantic States During Summer 1955, C. B. Taylor
Journal of Marine Research
During the summer of 1955, record high sea water temperatures were observed in harbors and coastal waters of the North Atlantic States. Record air temperatures also occurred during this period. It is concluded that high sea water temperatures were due in large part to continued high air temperatures. The record low densities (or salinities) during the same summer corresponded with the periods of hurricanes Connie and Diane, hence the high runoff following these storms was doubtless responsible. The lag between rainfall and noticeable dilution and the delay in return to normalcy depend upon several factors· including the amount of rain, …
A Note On The Dynamic Balance In Estuarine Circulation, R. W. Stewart
A Note On The Dynamic Balance In Estuarine Circulation, R. W. Stewart
Journal of Marine Research
Because of the large tidal velocities and small dimensions of estuaries, it is not justified to ignore the effects of the curvature of flow when computing the dynamic balance of the current system.