<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/31071ff7-58ce-4f8d-bd88-278ed5ce27e4/99A5EEDA-298B-4E6F-AF0A-6392998007CE/" 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://www.newscientist.com/channel/fundamentals/dn15003-mysterious-dead-water-effect-caught-on-film.html?feedId=online-news_rss20" href="http://www.newscientist.com/channel/fundamentals/dn15003-mysterious-dead-water-effect-caught-on-film.html?feedId=online-news_rss20" style="font-size: 11px;">www.newscientist.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newscientist.com/channel/fundamentals/dn15003-mysterious-dead-water-effect-caught-on-film.html?feedId=online-news_rss20"><P>In 1893, Norwegian explorer Fridtjof Nansen and his ship Fram were victims of a strange phenomenon as he sailed past the <A target="ns" href="http://en.wikipedia.org/wiki/Nordenski%C3%B6ld_Archipelago">Nordenskiöld Archipelago</A>, north of Siberia.</P></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://www.newscientist.com/channel/fundamentals/dn15003-mysterious-dead-water-effect-caught-on-film.html?feedId=online-news_rss20"><P>Nansen wrote afterwards: "Fram appeared to be held back, as if by some mysterious force, and she did not always answer the helm … We made loops in our course, turned sometimes right around, tried all sorts of antics to get clear of it, but to very little purpose."</P></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://www.newscientist.com/channel/fundamentals/dn15003-mysterious-dead-water-effect-caught-on-film.html?feedId=online-news_rss20"><DIV class="rhtopbox rhbox"> <DIV class="straptext">A toy boat demonstrates how waves benath the sea's surface can invisibly slow a ship's progress</DIV> <DIV class="enlarge straptext"><SPAN><A target="nsvideo" href="http://www.newscientist.com/video.ns?bctid=1873805199"><SPAN class="uline">Watch the full-size video</SPAN></A></SPAN></DIV> </DIV></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://www.newscientist.com/channel/fundamentals/dn15003-mysterious-dead-water-effect-caught-on-film.html?feedId=online-news_rss20">Research has already shown that dead water occurs when an area of water consists of two or more layers of water with different salinity, and hence density</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://www.newscientist.com/channel/fundamentals/dn15003-mysterious-dead-water-effect-caught-on-film.html?feedId=online-news_rss20"><P>It is the boat itself that initiates the wave – water from the layers below is dragged upwards to fill in the gulf its wake. That sets up an oscillation in the boundary between the layers, which gradually grows as the boat moves forward.</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/99A5EEDA-298B-4E6F-AF0A-6392998007CE/blog/" title="blog or email this clip"><img src="http://content8.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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