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 7
... covered with a rich and luxuriant vegetation . To account for these extraordinary changes of climate has generally been regarded as the most difficult and perplexing problem which has fallen to the lot of the geologist . Some have ...
... covered with a rich and luxuriant vegetation . To account for these extraordinary changes of climate has generally been regarded as the most difficult and perplexing problem which has fallen to the lot of the geologist . Some have ...
Página 9
... covered with sea , this would raise the temperature of the globe to an enor- mous extent . It will be shown in subsequent chapters that this theory does not duly take into account the prodigious influence exerted on climate by means of ...
... covered with sea , this would raise the temperature of the globe to an enor- mous extent . It will be shown in subsequent chapters that this theory does not duly take into account the prodigious influence exerted on climate by means of ...
Página 33
... covered with the warm waters of the stream , slowness of motion is essential . Mr. Findlay supposes that fully one - half of the Gulf - stream passes into the south - castern branch , and that it is only the north - eastern branch of ...
... covered with the warm waters of the stream , slowness of motion is essential . Mr. Findlay supposes that fully one - half of the Gulf - stream passes into the south - castern branch , and that it is only the north - eastern branch of ...
Página 58
... covered with the winter's accumulation of snow . Again , the presence of so much snow would lower the summer temperature , and prevent to a great extent the melting of the snow . There are three separate ways whereby accumulated masses ...
... covered with the winter's accumulation of snow . Again , the presence of so much snow would lower the summer temperature , and prevent to a great extent the melting of the snow . There are three separate ways whereby accumulated masses ...
Página 59
... covered ground , but is not heated by the radiation from the sun . When the air is humid and charged with aqueous vapour , a similar cooling effect also takes place , but in a slightly different way . Air charged with aqueous vapour is ...
... covered ground , but is not heated by the radiation from the sun . When the air is humid and charged with aqueous vapour , a similar cooling effect also takes place , but in a slightly different way . Air charged with aqueous vapour is ...
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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...