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 11
... considers the question as to whether geological climate could be influenced by changes in the eccentricity of the earth's orbit . He did not appear at the time to have been aware of the conclusions arrived at by Lagrange regarding the ...
... considers the question as to whether geological climate could be influenced by changes in the eccentricity of the earth's orbit . He did not appear at the time to have been aware of the conclusions arrived at by Lagrange regarding the ...
Página 25
... considers the Gulf - stream equal to a stream thirty - two miles broad and 1,200 feet deep , flowing at the rate of five knots an hour . † This gives 6,165,700,000,000 cubic feet per hour as the quantity of water conveyed by this stream ...
... considers the Gulf - stream equal to a stream thirty - two miles broad and 1,200 feet deep , flowing at the rate of five knots an hour . † This gives 6,165,700,000,000 cubic feet per hour as the quantity of water conveyed by this stream ...
Página 49
... considers that the effects of currents are all compensatory . " If a current of hot water , " he says , " moderates the cold of a Lapland winter , the counter - current , which brings the cold of Greenland to the shores of the United ...
... considers that the effects of currents are all compensatory . " If a current of hot water , " he says , " moderates the cold of a Lapland winter , the counter - current , which brings the cold of Greenland to the shores of the United ...
Página 55
... consider the former case first . The total quantity of heat received from the sun during one revolution is inversely proportional to the minor axis . The difference of the minor axis of the orbit when at its maximum and its minimum ...
... consider the former case first . The total quantity of heat received from the sun during one revolution is inversely proportional to the minor axis . The difference of the minor axis of the orbit when at its maximum and its minimum ...
Página 64
... consider it so surprising that the summer temperature of the polar regions should be low , for we are accustomed to regard a low tempera- ture as the normal condition of things there . We are , however , mistaken if we suppose that the ...
... consider it so surprising that the summer temperature of the polar regions should be low , for we are accustomed to regard a low tempera- ture as the normal condition of things there . We are , however , mistaken if we suppose that the ...
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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
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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...