Climate and Time in Their Geological Relations: A Theory of Secular Changes of the Earth's ClimateD. Appleton, 1875 - 577 páginas |
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Página xi
... bottoms . - Transformation of a Land - surface into a Sea - bottom oblite- rates all Traces of Glaciation . - Why so ... bottom . - Mr . Camp- bell's Observations on the Coast of Labrador . - Amount of Material trans- ported by Icebergs ...
... bottoms . - Transformation of a Land - surface into a Sea - bottom oblite- rates all Traces of Glaciation . - Why so ... bottom . - Mr . Camp- bell's Observations on the Coast of Labrador . - Amount of Material trans- ported by Icebergs ...
Página 3
... bottom of the ocean does not exercise so much influence on life as the temperature of the water . There are few , I presume , who reflect on the subject that will not . readily admit that , whether as regards the great physical changes ...
... bottom of the ocean does not exercise so much influence on life as the temperature of the water . There are few , I presume , who reflect on the subject that will not . readily admit that , whether as regards the great physical changes ...
Página 24
... bottom . We are thus enabled to determine with some precision the mean tempera- ture of the stream . And knowing its mean velocity at any given section , we have likewise a means of determining the number of cubic feet of water passing ...
... bottom . We are thus enabled to determine with some precision the mean tempera- ture of the stream . And knowing its mean velocity at any given section , we have likewise a means of determining the number of cubic feet of water passing ...
Página 53
... bottom by dredging and other means , the presence of a warm or of a cold current ; but this can never enable him to prove that the temperate and polar regions are not affected to an enormous extent by warm water conveyed from the ...
... bottom by dredging and other means , the presence of a warm or of a cold current ; but this can never enable him to prove that the temperate and polar regions are not affected to an enormous extent by warm water conveyed from the ...
Página 79
... bottom , but it would not cover the land with ice . Professor Tyndall's conclusions are , of course , equally con- clusive against Professor Balfour Stewart's theory , that the glacial epoch may have resulted from a general diminution ...
... bottom , but it would not cover the land with ice . Professor Tyndall's conclusions are , of course , equally con- clusive against Professor Balfour Stewart's theory , that the glacial epoch may have resulted from a general diminution ...
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Términos y frases comunes
amount of heat antarctic aphelion arctic regions Atlantic beds bottom boulder clay Caithness Carboniferous cause centre of gravity channel coal cold periods condition of climate consequently considerable denudation deposits depth descend earth's orbit eccentricity ecliptic effect Eocene equator evidence existence extent fact feet flow foot-pounds force Geikie Geol geological geologists glacial epoch glacier globe Grangemouth gravel greater Greenland Gulf-stream heat received ice-cap icebergs inter-glacial periods island James Geikie Kilsyth land land-ice latitude lower mass mean melting miles Miocene molecules motion North North Sea northern obliquity ocean ocean-currents perihelion polar column polar regions poles present probably produce Professor quantity of heat radiation regarding result river rocks sand says Scotland sea-bottom sea-level shear Sir Charles Lyell slope snow southern hemisphere specific gravity stones stratified stream striated submergence summer sun's supposed surface theory thickness tion valley warm periods winter
Pasajes populares
Página 331 - ... been removed from the general surface in one year ; and there seems no danger of our overrating the mean rate of waste by selecting the Mississippi as our example, for that river drains a country equal to more than half the continent of Europe, extends through twenty degrees of latitude, and therefore through regions enjoying a great variety of climate, and some of its tributaries descend from mountains of great height. The Mississippi is also more likely to afford us a fair test of ordinary...
Página 535 - Now, the perihelion of the orbit is situated nearly at the place of the northern winter solstice ; so that, were it not for the compensation we have just described, the effect would be to exaggerate the difference of summer and winter in the southern hemisphere, and to moderate it in the northern ; thus producing a more violent alternation of climate in the one hemisphere, and an approach to perpetual spring in the other. As it is, however, no such inequality subsists, but an equal and impartial...