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  • Cambridge University Press  (5,523)
  • 1960-1964  (3,736)
  • 1950-1954  (1,787)
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Years
Year
  • 1
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    The Distribution of Octopus Vulgaris Lamarck in British Waters (1950)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 29 (02). pp. 361-378.
    Details
    Publication Date: 2020-09-10
    Description: In Britain Octopus vulgaris occurs on the Channel coast and only very rarely on other coasts. In Brittany and the Channel Islands it frequently makes its lair at low water, but on the English side of the Channel it does not come so close inshore except in abnormal years of high sea temperatures. The discovery of Octopus larvae of various sizes, from newly hatched to 6·0 mm. (mantle length), in plankton hauls taken to the north of the Channel Islands, proves that the species has a much longer planktonic life than hitherto supposed. The water circulation in the English Channel, as indicated by drift bottles, is admirably suited to the dispersal of larvae to our shores from breeding centres on the coasts of Brittany and the Channel Islands.
    Type: Article , PeerReviewed
    Format: text
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  • 2
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    The abundance of Octopus in the English Channel (1954)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 33 (02). pp. 515-536.
    Details
    Publication Date: 2020-09-09
    Description: During 1950, the Common Octopus (Octopus vulgaris Lamarck) was to be found along the south coast of England in greater numbers than at any time since Garstang (1900) reported on the ‘plague’ on the coasts of Devon and Cornwall in 1899–1900. In earlier papers (Rees, 1950, 1952) the distribution of the octopus in our northern waters was reviewed, and it was demonstrated that this species is an immigrant which breeds on our south coast only rarely. It reaches these coasts by being brought there as a planktonic larva by the water circulation in the English Channel and by migrations of the adult. The most important factor in controlling the movements of the adult, however, might be expected to be the water temperature in the English Channel—where the species is at the northern limit of its breeding range and might therefore be extremely sensitive to slight changes in temperature.
    Type: Article , PeerReviewed
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  • 3
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    The Gneisses of the Bartica Assemblage, British Guiana (1962)
    Cambridge University Press
    In:  Geological Magazine, 99 (02). pp. 164-172.
    Details
    Publication Date: 2020-07-31
    Description: The results of an examination of one quarry within the gneisses of the Bartica Assemblage are described and the validity of these results throughout the whole of the Bartica Assemblage is discussed. The foliation and banding of the gneisses at Kereti Quarry are mainly the results of tectonism; concomitant metamorphism within the Amphibolite Facies was succeeded by a two-phase metasomatism involving successive additions of Na and K. These results appear valid throughout the Bartica Assemblage and it is further suggested that the main rock type distribution in the Bartica Assemblage is also controlled by tectonism.
    Type: Article , PeerReviewed
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  • 4
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    Porphyroblastic and augen gneisses in the Bartica Assemblage, British Guiana (1964)
    Cambridge University Press
    In:  Geological Magazine, 101 (6). pp. 541-547.
    Details
    Publication Date: 2020-07-31
    Description: Textural differences in the occurrence of microcline define augen gneisses, subhedral porphyroblastic gneisses and euhedral porphyroblastic gneisses within the Bartica Assemblage, British Guiana. The introduction of microcline is metasomatic and the nature of the porphyroblasts appears to be a reflection of tectonic control during their development.
    Type: Article , PeerReviewed
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  • 5
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    Natural convection in a horizontal circular cylinder (1964)
    Cambridge University Press
    In:  Journal of Fluid Mechanics, 18 (03). pp. 409-437.
    Details
    Publication Date: 2020-07-24
    Description: In this paper we examine the steady, two-dimensional convective motion which occurs in a horizontal circular cylinder whose wall is non-uniformly heated. One observes several qualitatively different physical phenomena depending on the wall temperature distribution and the value of the Rayleigh number. The low-Rayleigh-number behaviour for the single convective cell heated from below is related to the classical Rayleigh stability problem. The critical Rayleigh number for the single circular cell is approximately five times the value for Rayleigh's multi-celluar configuration. The flow which exhibits a nearly parabolic velocity profile near the critical Rayleigh number, gradually changes to a rigidly-rotating-core behaviour as the Rayleigh number increases. The speed of core rotation is a function of the Prandtl number, whereas the boundary-layer thickness is primarily a function of the Rayleigh number. When the heating is from side to side, the solution shows that as the Rayleigh number increases the core motion is progressively arrested leaving a narrow circulating band of fluid adjacent to the wall. An oblique heating produces a hybrid phenomenon, a low-Rayleigh-number behaviour which is characteristic of the sideways heating case and a high-Rayleigh-number interior motion characteristic of the bottom heating case. To determine the core motion in the high-Rayleigh-number limit, Batchelor's work concerning the uniqueness of incompressible, exactly steady, closed streamline flows with small viscosity is extended to include flows with small thermal conductivity.
    Type: Article , PeerReviewed
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  • 6
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    On the non-linear energy transfer in a gravity-wave spectrum Part 1. General theory (1962)
    Cambridge University Press
    In:  Journal of Fluid Mechanics, 12 (04). p. 481.
    Details
    Publication Date: 2020-07-24
    Description: The energy flux in a finite-depth gravity-wave spectrum resulting from weak non-linear couplings between the spectral components is evaluated by means of a perturbation method. The fifth-order analysis yields a fourth-order effect comparable in magnitude to the generating and dissipating processes in wind-generated seas. The energy flux favours equidistribution of energy and vanishes in the limiting case of a white, isotropic spectrum. The influence on the equilibrium structure of fully developed wave spectra and on other phenomena in random seas is discussed briefly.
    Type: Article , PeerReviewed
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  • 7
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    Strain Slip Cleavage in the Ordovician Sediments of Central Victoria (1964)
    Cambridge University Press
    Details
    Publication Date: 1964-12-30
    Description: At a late stage of folding, strain slip cleavage was imposed on the pelitic sediments of the Ordovician greywacke-slate association in Central Victoria. The nature of the cleavage surfaces was controlled by the type of sediment in which they were developed. In the coarser siltstones, and in the interlaminated zone of oscillatory graded beds, they are second order shear zones. In the finer siltstones and slates they are thin continuous shear domains of the first order.
    Print ISSN: 0016-7568
    Electronic ISSN: 1469-5081
    Topics: Geosciences
    Published by Cambridge University Press
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  • 8
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    The Stratigraphical Nomenclature of the Lower and Middle Jurassic Rocks of the Hebrides (1964)
    Cambridge University Press
    Details
    Publication Date: 1964-12-30
    Description: The stratigraphy of the Lower and Middle Jurassic rocks of the Hebrides is briefly summarized, and the lithostratigraphical nomenclature reviewed. To replace the inappropriate name “Inferior Oolite” for the lower marine part of the Middle Jurassic a new name, Bearreraig Sandstone Series, is proposed. This series is defined, and the succession at the type section is summarized.
    Print ISSN: 0016-7568
    Electronic ISSN: 1469-5081
    Topics: Geosciences
    Published by Cambridge University Press
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  • 9
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    Boudinage-type Structures at Sørfinnset, Gildeskaal, North Norway (1964)
    Cambridge University Press
    Details
    Publication Date: 1964-12-30
    Description: A layer of massive and lineated hornblende-biotite-gneiss has fractured along ac-joints (perpendicular to the layering and b–lineation), at regular intervals along its lower surface in contact with a thin marble bed. The joints have been opened from below and the marble has penetrated upwards to form intrusive tongues caused by extremely plastic flow folding, as shown by the unbroken banding in the marble. The structure constitutes a variety of one-sided boudinage involving segmentation in the lowest metre or so of the hornblendic rock, while the extreme marble deformation is all accommodated in a few centimetres thickness. The structures must have developed at relatively high temperatures to allow contemporaneous segregation of quartz-feldspar pegmatite veins from the hornblendic rock, and of diopside reaction skarns at the marble junctions.
    Print ISSN: 0016-7568
    Electronic ISSN: 1469-5081
    Topics: Geosciences
    Published by Cambridge University Press
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  • 10
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    Soviet Antarctic Expedition, Information Bulletin, English Edition. Vols. 1 and 2, Elsevier Publishing Company. Amsterdam, 1964. Price £8 10s. (1964)
    Cambridge University Press
    Details
    Publication Date: 1964-12-30
    Print ISSN: 0016-7568
    Electronic ISSN: 1469-5081
    Topics: Geosciences
    Published by Cambridge University Press
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