Sentences with phrase «through volcanism»

Once produced, methane could have been stored as a stable clathrate hydrate and released to the atmosphere either gradually, through volcanism, or in bursts, triggered by impacts.

Not exact matches

Peering through the clouds in infrared «windows» — wavelengths that penetrate the murk — Venus Express also saw surface hot spots that change in temperature from day to day, suggesting active volcanism.

Indeed, a study in 2006 suggested that Mars may have gone through an acidic phase, triggered by active volcanism, after an early period in which it had a denser atmosphere and large bodies of neutral - pH water on its surface.

Another idea is that, for reasons yet unexplained, there is simply a thinner layer of continental crust shielding the surface from volcanism that runs through the North American continent from roughly New Madrid in Missouri to the coast in Virginia.

The variability of the methane suggests that the gas may be spewed by an ongoing geologic process like volcanism, or possibly through the metabolic activity of microbes.

While the Earth loses most of its heat through plate recycling (the formation and subduction of new crust inherent in plate tectonics), Venus probably loses its internal heat by surface volcanism and by conduction through its crust.

Once formed by either serpentinization or microbes, methane could be stored as a stable clathrate hydrate — a chemical structure that traps methane molecules like animals in a cage — for later release to the atmosphere, perhaps by gradual outgassing through cracks and fissures or by episodic bursts triggered by volcanism.

What we will all now over time, or those who come after will know, is that warming and cooling of the climate is almost entirely dependent upon the sun, its activity, our orbit of it, etc... Of course other things such as volcanism matter, and clouds, and water vapor, and so many other things which are all natural and have happened over and over through the ages.

Hmmm yes... but I suspect that what you did was place your ruler through the pre-1950 temperature curve, which is somewhat affected by a lull in volcanism 1920 - 1950.

I took Pekka's point to be about sustained volcanism, which would need to be sustained for at least 25 years to get through the F3 filter.

Overall, global spikes in volcanism began near the start of major melt events at around 18,000 years ago and continued on through the Iceland spike at the 12,000 year time - frame, finally tapering off around 7,000 years ago.

Note that the number of confirmed erupting volcanoes has leveled off between 50 and 70 per year through the past four decades, and a linear regression line through the data indicates that volcanism has been virtually constant.

Volcanism triggered by deglacial unloading may plausibly accelerate melting and water runoff through an albedo effect of dark tephra on snow and ice.

Mikhail I. Budyko has shown good correlation between emissions of CO2 through periodes of extensive volcanism and deposition of marine carbonate rocks during the Earth's last ~ 600 million years.