Occasional Papers on the Theory of Glaciers Now First Collected and Chronologically Arranged: With a Prefatory Note on the Recent Progress and Present Aspect of the TheoryA. and C. Black, 1859 - 278 páginas |
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Página 3
... distance of eight or nine miles , on a moderate computation , allowing for the roughness of the way ) on the first day , I noticed in some parts of the ice , an appearance which I cannot more accurately describe , than by calling it a ...
... distance of eight or nine miles , on a moderate computation , allowing for the roughness of the way ) on the first day , I noticed in some parts of the ice , an appearance which I cannot more accurately describe , than by calling it a ...
Página 11
... distance of blocks upon its surface from a fixed point , from one year to another , has marked indubitably the annual progress of the ice . I do not know that any one has attempted to perform the measurement in a manner which could lead ...
... distance of blocks upon its surface from a fixed point , from one year to another , has marked indubitably the annual progress of the ice . I do not know that any one has attempted to perform the measurement in a manner which could lead ...
Página 15
... distances . The observation , in the simplest and best form which I employ , resembles perfectly that of determining with the transit instrument the progress of a planet . I have already said that my later observations confirm those ...
... distances . The observation , in the simplest and best form which I employ , resembles perfectly that of determining with the transit instrument the progress of a planet . I have already said that my later observations confirm those ...
Página 22
... distance by a light not too strong , as in the afternoon , or by moonlight . They are evidently bands of dirt on the surface of the ice , having nearly the form of very elongated parabolas merging in the moraines on either side , widest ...
... distance by a light not too strong , as in the afternoon , or by moonlight . They are evidently bands of dirt on the surface of the ice , having nearly the form of very elongated parabolas merging in the moraines on either side , widest ...
Página 24
... distance from the soil ; whilst , nearer the origin of the glacier , the frontal dip is great , because the mass of the glacier forms a virtual barrier in advance ; and the structure is com- paratively indistinct for the same reason ...
... distance from the soil ; whilst , nearer the origin of the glacier , the frontal dip is great , because the mass of the glacier forms a virtual barrier in advance ; and the structure is com- paratively indistinct for the same reason ...
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Términos y frases comunes
ablation Alps analogy angle annual motion appears Arveiron August Balmat bands Bishop of Annecy Brenva cause centre Col du Géant compact congelation continuity convex Courmayeur crevasses curve curved bands daily motion declivity direction dirt-bands effect Etna evidence experiment fact feet fissures fluid friction frontal dip Glace of Chamouni Glacier des Bois glacier motion glacier moves glacier of Bossons Grindelwald horizontal hydrostatic pressure inches inclination internal July lava stream less Letter on Glaciers longitudinal lower marked mass measurement Mer de Glace millimetres Mont Blanc Montanvert moraine motion of glaciers mud-slide nearly névé observations origin parallel particles plane plastic Plate portion pressure produce remarkable retardation rock Saussure Saussure's season side sliding slope snow solid station summer surface Talefre temperature thawing theodolite theory of glaciers tion transverse Travels valley veined structure velocity vertical Vesuvius viscous theory volume whilst winter wrinkles