Volcanic co2 Emission Vs Human


	Volcanic co2 Emission Vs Human

Kingsmob77

3-6-2007 4:06 PM

2940 views

tags:

politics, science, nature

Kingsmob77 says:

This is from the Department of the interior, USGS. their findings show that humans generate a significantly higher amount of greenhouse gases than volcanoes.

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3-7-2007 5:52 PM

amgumen

Volcanic emission is a small part of overall Earth degassing, most actively working through rift zones. The main component is CH4, its green-house effect incomparably higher then CO2.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/41fd1253-0b56-451f-a41b-6dfb2d4f27c2/2D72819F-F8A3-46BB-BB55-82504DEF65BA/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://volcanoes.usgs.gov/Hazards/What/VolGas/volgas.html" href="http://volcanoes.usgs.gov/Hazards/What/VolGas/volgas.html" style="font-size: 11px;">volcanoes.usgs.gov</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://volcanoes.usgs.gov/Hazards/What/VolGas/volgas.html"><H3>Volcanic gases are the driving force of eruptions</H3></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://volcanoes.usgs.gov/Hazards/What/VolGas/volgas.html"><P>
<B>Comparison of CO<FONT size="2"><SUB>2</SUB></FONT> emissions from volcanoes vs. 
human activities.</B>
Scientists have calculated that volcanoes emit between 
about 130-230 million tonnes (145-255 million tons) of 
CO<FONT size="2"><SUB>2</SUB></FONT> into the atmosphere 
every year (<A href="#reference">Gerlach, 1999,  
1992</A>). This estimate includes both subaerial and 
submarine volcanoes, about in equal amounts. Emissions of 
CO<FONT size="2"><SUB>2</SUB></FONT> by human activities, including 
fossil fuel burning, cement production, and gas flaring, 
amount to about 22 billion tonnes per year (24 billion tons) [ (<A href="#reference"> Marland, et al., 1998</A>) - The reference gives the amount of released carbon (C), rather than CO<SUB>2</SUB>.].
Human activities release more than 150 times the amount of 
CO<FONT size="2"><SUB>2</SUB></FONT> emitted by volcanoes--the equivalent of nearly 17,000 additional volcanoes like Kilauea 
(Kilauea emits about 13.2 million tonnes/year)!</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/2D72819F-F8A3-46BB-BB55-82504DEF65BA/blog/" title="blog or email this clip"><img src="http://content9.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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