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 24
... depth , and temperature of the Gulf - stream have formed the subject of extensive and accurate observations by the United States Coast Survey . In the memoirs and charts of that survey cross - sections of the stream at various places ...
... depth , and temperature of the Gulf - stream have formed the subject of extensive and accurate observations by the United States Coast Survey . In the memoirs and charts of that survey cross - sections of the stream at various places ...
Página 27
... depth at 1,000 feet , and its velocity at two miles an hour , it follows that , in order to convey an equal amount of heat from the tropics by means of an aërial current , it would be necessary to have a current about 11 mile deep , and ...
... depth at 1,000 feet , and its velocity at two miles an hour , it follows that , in order to convey an equal amount of heat from the tropics by means of an aërial current , it would be necessary to have a current about 11 mile deep , and ...
Página 86
... depth of 85 feet 6 inches ; in the sand a quantity sufficient to raise the temperature 1 ° C. to a depth of 72 feet 6 inches ; and in the trap - rock a quantity only sufficient to raise the temperature 1 ° C. to a depth of 61 feet 6 ...
... depth of 85 feet 6 inches ; in the sand a quantity sufficient to raise the temperature 1 ° C. to a depth of 72 feet 6 inches ; and in the trap - rock a quantity only sufficient to raise the temperature 1 ° C. to a depth of 61 feet 6 ...
Página 87
... depth of 31 feet 3 inches . Consequently the total quantity of heat stored up during summer in the latitude of Edinburgh is only equal to what we receive from the sun during three days at the time of the equinoxes . Three days ...
... depth of 31 feet 3 inches . Consequently the total quantity of heat stored up during summer in the latitude of Edinburgh is only equal to what we receive from the sun during three days at the time of the equinoxes . Three days ...
Página 88
... depth of , say 40 or 50 feet , be deprived of an amount of heat equal to that received from the sun in 168 hours . This could produce little or no sensible effect on climate ; for , owing to the slow conductivity of the ground for heat ...
... depth of , say 40 or 50 feet , be deprived of an amount of heat equal to that received from the sun in 168 hours . This could produce little or no sensible effect on climate ; for , owing to the slow conductivity of the ground for heat ...
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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...