Sentences with phrase «volcanism include»
Features common in shield volcanism include lava tubes.
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The consensus is that several factors are important: atmospheric composition (the concentrations of carbon dioxide, methane); changes in the Earth's orbit around the Sun known as Milankovitch cycles (and possibly the Sun's orbit around the galaxy); the motion of tectonic plates resulting in changes in the relative location and amount of continental and oceanic crust on the Earth's surface, which could affect wind and ocean currents; variations in solar output; the orbital dynamics of the Earth - Moon system; and the impact of relatively large meteorites, and volcanism including eruptions of supervolcanoes.
Not exact matches
«We are currently exploring additional candidate warming mechanisms, including volcanism and impact cratering, that might also contribute to melting of a cold and icy early Mars.»
«The consequences of this research are very important for all scientists working on the dynamics of the Earth, including plate tectonics, seismic activity and volcanism,» said Jean Braun of the German Research Centre for Geosciences, who was not involved in the research.
When that happens, he says, denser material heads to the core and geologic processes kick in, including volcanism, plate tectonics and erosion.
Results from climate models driven by estimated radiative forcings for the 20th century (Chapter 9) suggest that there was little change prior to about 1915, and that a substantial fraction of the early 20th - century change was contributed by naturally occurring influences including solar radiation changes, volcanism and natural variability.
Would we really want several warming factors (solar, volcanism, etc), including AGW, to piggy - back on each other & send us into really dire straits?
The oldest surface features seem to be about 800 million years old, but extensive volcanism about 300 to 500 million years ago appears to have wiped out earlier surfaces including large craters from the planet's early history.
Most recently, its diverse geography includes various types of basaltic volcanism, both effusive and less explosive (essentially Strombolian and Hawaiian) along its flanks, usually conditioned by local and radial faults.
There are of course other causes for other changes that have occurred, including suspected asteroid impacts, changes in volcanism over the eons which can lead to the buildup or reduction of greenhouse gases over long time scales, etc..
Increasing CO2 does increase the greenhouse effect, but there are other factors which determine climate, including solar irradiance, volcanism, albedo, orbital variations, continental drift, mountain building, variations in sea currents, changes in greenhouse gases, even cometary impacts.
When reconstructing Earth's climate history, it can't be explained without including all the various influences, including solar irradiance, volcanism, albedo, orbital variations, continental drift, mountain building, variations in sea currents, changes in greenhouse gases, even cometary impacts.
(A second implication is that pre-1940 warming included a significant GHG component even if it was not as important quantitatively as the declining volcanism from early to mid-century in determining the total warming).
He has a particular interest in the relationship between volcanism and past climate change, including the possible trigger mechanisms for the enigmatic warming events known as hyperthermals, such as the PETM.
They include catastrophic releases of methane clathrates, massive volcanism events, and centuries long natural coal fires.
«The consequences of this research are very important for all scientists working on the dynamics of the Earth, including plate tectonics, seismic activity and volcanism,» said Jean Braun of the German Research Centre for Geosciences, who was not involved in the research.
Tabulate the CO2 exhalation rates over the last 15,000 years from (i) terrestrial and submarine volcanism (including maars, gas vents, geysers and springs) and calc - silicate mineral formation, and (ii) CH4 oxidation to CO2 derived from CH4 exhalation by terrestrial and submarine volcanism, natural hydrocarbon leakage from sediments and sedimentary rocks, methane hydrates, soils, microbiological decay of plant material, arthropods, ruminants and terrestrial methanogenic bacteria to a depth of 4 km.