Undersea seismic activity may play a role in the breakup of ice sheets


	Undersea seismic activity may play a role in the breakup of ice sheets

amgumen

9-15-2007 9:29 PM

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tags:

geology, interesting, science, seismology, antarctica

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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/b312a1bc-aacd-439a-b63e-3a8956a3f200/87A64C9C-F95D-46E6-BF05-D2BF8A3E6729/" 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://oregonstate.edu/dept/ncs/newsarch/2007/Mar07/antarctic.html" href="http://oregonstate.edu/dept/ncs/newsarch/2007/Mar07/antarctic.html" style="font-size: 11px;">oregonstate.edu</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://oregonstate.edu/dept/ncs/newsarch/2007/Mar07/antarctic.html">Sounds of the Antarctic Revealed: Earthquakes, Icebergs and Pygmy Whales</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://oregonstate.edu/dept/ncs/newsarch/2007/Mar07/antarctic.html">Their preliminary findings suggest that this remote region in the Bransfield Strait is much more seismically active than scientists previously thought and its ongoing earthquakes – in proximity to massive ice fields – create an unusual relationship that may not occur anywhere else on Earth.</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://oregonstate.edu/dept/ncs/newsarch/2007/Mar07/antarctic.html">That has been well-documented. But we also picked up the same humming sounds right after earthquake activity, suggesting that the undersea seismic activity may play a role in the breakup of ice sheets</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://oregonstate.edu/dept/ncs/newsarch/2007/Mar07/antarctic.html">This relationship between earthquakes and ice fields is a new idea and unique to the region</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://oregonstate.edu/dept/ncs/newsarch/2007/Mar07/antarctic.html">In fact, while our instruments were deployed here, a magnitude 7.5 quake hit the region, generating a small tsunami. It’s a very active area</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/87A64C9C-F95D-46E6-BF05-D2BF8A3E6729/blog/" title="blog or email this clip"><img src="http://content6.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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