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 xv
... probably striated on Summit . - Glacial Drift in Centre of Eng- land . Mr. Lacy on Drift of Cotteswold Hills . - England probably crossed by Land - ice . - Mr . Jack's Suggestion . - Shedding of Ice North and South . - South of England ...
... probably striated on Summit . - Glacial Drift in Centre of Eng- land . Mr. Lacy on Drift of Cotteswold Hills . - England probably crossed by Land - ice . - Mr . Jack's Suggestion . - Shedding of Ice North and South . - South of England ...
Página 7
... probably up to the North Pole , were not only free from ice , but were 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 ...
... probably up to the North Pole , were not only free from ice , but were 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 ...
Página 24
... probably equal to that of a stream fifty miles broad and 1,000 feet deep , † flowing at the rate of * Phil . Mag . for February , 1867 , p . 127 . The Gulf - stream at the narrowest place examined by the Coast Survey , and where also ...
... probably equal to that of a stream fifty miles broad and 1,000 feet deep , † flowing at the rate of * Phil . Mag . for February , 1867 , p . 127 . The Gulf - stream at the narrowest place examined by the Coast Survey , and where also ...
Página 25
... probably below 30 ° . Hence I cannot be over - estimating the extent to which the water of the Gulf - stream is cooled down in fixing upon 40 ° as the average minimum temperature . " Physical Geography of the Sea , " § 24 , 6th edition ...
... probably below 30 ° . Hence I cannot be over - estimating the extent to which the water of the Gulf - stream is cooled down in fixing upon 40 ° as the average minimum temperature . " Physical Geography of the Sea , " § 24 , 6th edition ...
Página 28
... probably conveyed by the Gulf - stream alone from the tropical to the temperate and arctic regions than by all the aërial currents which flow from the equator . We are apt , on the other hand , to over - estimate the amount of the heat ...
... probably conveyed by the Gulf - stream alone from the tropical to the temperate and arctic regions than by all the aërial currents which flow from the equator . We are apt , on the other hand , to over - estimate the amount of the 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...