Elastic waves in a transitional solid with arbitrarily small rigidity     

Freeman Gilbert 《Geophysical Journal International》1998,133(2):230-232

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Environmental Impact Statements     

Gilbert F. White 《The Professional geographer》1972,24(4):302-309

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Geography And Public Policy1     

Gilbert F. White 《The Professional geographer》1972,24(2):101-101

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Harold Herbert Read, 1889–1970     

Gilbert Wilson  H. M. K. Toms 《International Journal of Earth Sciences》1971,60(3):1318-1320

Ohne Zusammenfassung

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Harold Herbert Read, 1889–1970

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The Resolving Power of Gross Earth Data   总被引：22，自引：0，他引：22  

George Backus  Freeman Gilbert 《Geophysical Journal International》1968,16(2):169-205

A gross Earth datum is a single measurable number describing some property of the whole Earth, such as mass, moment of interia, or the frequency of oscillation of some identified elastic-gravitational normal mode. We show how to determine whether a given finite set of gross Earth data can be used to specify an Earth structure uniquely except for fine-scale detail; and how to determine the shortest length scale which the given data can resolve at any particular depth. We apply the general theory to the linear problem of finding the depth-variation of a frequency-independent local Q from the observed quality factors Q of a finite number of normal modes. We also apply the theory to the non-linear problem of finding density vs depth from the total mass, moment, and normal-mode frequencies, in case the compressional and shear velocities are known.  相似文献   

Evolution des hydrocarbures dans des sédiments côtiers méditerranéens prélevés à proximité d'un emissaire d'une raffinerie de pétrole     

Gilbert Mille  Jan Yu Chen  Henri Dou  Edgar Azoulay  Maryse Colin  Jean-Claude Bertrand 《Marine environmental research》1985,17(1):65-80

Coastal Mediterranean sediments highly polluted by refinery effluents have been studied for their hydrocarbon content and bacterial activity. The study has taken into account both the distance from the refinery and depth of sampling. Very high hydrocarbon concentrations have been found (1–250 g/kg dry sediment). Micro-organisms in the sediments have a high bacterial activity and a good correlation exists between hydrocarbon concentrations and bacteria able to use these substrates as a carbon and energy source.  相似文献   

The giant clam Tridacna maxima communities of three French Polynesia islands: comparison of their population sizes and structures at early stages of their exploitation     

Gilbert  Antoine; Andrefouet  Serge; Yan  Laurent; Remoissenet  Georges 《ICES Journal of Marine Science》2006,63(9):1573-1589

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Influence of illumination conditions on the sea-bottom visibility     

G. D. Gilbert  L. S. Dolin  I. M. Levin  A. G. Luchinin  S. Stewart 《Izvestiya Atmospheric and Oceanic Physics》2006,42(1):115-123

Statistical models of the useful and background signals forming an image of the sea bottom observed through a rough sea surface are constructed. The methods for estimating the signal-to-noise ratio in the image of the bottom with the test distribution of the reflectance are described. The dependence of the signal-to-noise ratio on observational conditions, in particular, on the mutual orientation of the directions of sighting, wind, and solar vertical, is analyzed. Recommendations on the choice of optimal conditions for bottom observations from airborne carriers are given.  相似文献   

Quaternary turbidite systems on the northern margins of the Balearic Basin (Western Mediterranean): a synthesis   总被引：1，自引：1，他引：1  

L. Droz  A. T. dos Reis  M. Rabineau  S. Berné  G. Bellaiche 《Geo-Marine Letters》2006,26(6):347-359

The Balearic Basin is a young basin composed of thick Plio–Quaternary sediments, including active gravity sedimentation. During the Quaternary, gravity processes deposited (1) turbidite systems, either as symmetrical fans (Petit-Rhône and Valencia fans) or asymmetrical ridges (Marseille–Planier, Grand-Rhône and Pyreneo-Languedocian ridges) and (2) several mass-transport deposits, indicating recurrent sedimentary failures of the margin. This paper synthesizes previous works and proposes a chronological sedimentary evolution for the basin. Except for the last 20 ka, the chronostratigraphy remains poorly constrained but should soon be established for the last 500 ka, based on the PROMESS1 drillings on the outer shelf of the Gulf of Lions, and hopefully for the last 30 Ma, based on ultra-deep drilling in the deep basin from aboard the Chikyu research vessel (IODP proposal Pre699).  相似文献   

The remarkable population size of the endangered clam Tridacna maxima assessed in Fangatau Atoll (Eastern Tuamotu, French Polynesia) using in situ and remote sensing data     

Andrefouet  Serge; Gilbert  Antoine; Yan  Laurent; Remoissenet  Georges; Payri  Claude; Chancerelle  Yannick 《ICES Journal of Marine Science》2005,62(6):1037-1048

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