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 v
... increased and con- stantly increasing knowledge of the drift - phenomena , which has induced the almost general conviction that a climate such as that of the glacial epoch could only have resulted from cosmical causes . Considerable ...
... increased and con- stantly increasing knowledge of the drift - phenomena , which has induced the almost general conviction that a climate such as that of the glacial epoch could only have resulted from cosmical causes . Considerable ...
Página viii
... Increase of Eccentricity . - An important Consideration overlooked . - Change of Eccentricity affects Climate only indirectly . Agencies which are brought into Operation by an Increase of Eccentricity . - How an Accumulation of Snow is ...
... Increase of Eccentricity . - An important Consideration overlooked . - Change of Eccentricity affects Climate only indirectly . Agencies which are brought into Operation by an Increase of Eccentricity . - How an Accumulation of Snow is ...
Página xiv
... Increase of Obliquity diminishes the Heat at the Equator and increases that at the Poles . - Influence of Change of Obliquity on the Level of the Sea . - When the Obliquity was last at its superior Limit . - Probable Date of the 25 ...
... Increase of Obliquity diminishes the Heat at the Equator and increases that at the Poles . - Influence of Change of Obliquity on the Level of the Sea . - When the Obliquity was last at its superior Limit . - Probable Date of the 25 ...
Página 8
... increase or decrease , however great , could possibly account for either the glacial epoch or a warm temperate condition of climate in polar regions . The theory that the sun is a variable star , and that the glacial epochs of the ...
... increase or decrease , however great , could possibly account for either the glacial epoch or a warm temperate condition of climate in polar regions . The theory that the sun is a variable star , and that the glacial epochs of the ...
Página 12
... increase in the eccentricity of its orbit , unless the extent of that increase was very great . " Were it not , " he says , " for this , the eccentricity of the orbit would materially influence the transition of seasons . The ...
... increase in the eccentricity of its orbit , unless the extent of that increase was very great . " Were it not , " he says , " for this , the eccentricity of the orbit would materially influence the transition of seasons . The ...
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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...