http://tnl-6.local/taxonomy/term/934/0 en-US http://tnl-6.local/node/790 <p>In October last year I made my first audio recording of the Firth of Forth from a diving rib that was around 500-600 metres away from the main deep shipping channel. My hydrophone was at approximately 20 metres in depth and highlights that the <a href="http://www.dosits.org/science/intro.htm">attenuation of sound</a> through water is extremely efficient. As I was making the recording, a large tanker appeared further up the estuary a couple of miles away, the noise of its engines slowly increasing until it was quite overpoweringly noisy.</p> <object type="application/x-shockwave-flash" data="/sites/all/modules/contrib/audio/players/xspf_slim.swf" width="400" height="15"> <param name="movie" value="/sites/all/modules/contrib/audio/players/xspf_slim.swf" /> <param name="menu" value="false" /> <param name="quality" value="high" /> <param name="FlashVars" value="song_url=http%3A%2F%2Ftnl-6.local%2Faudio%2Fplay%2F790&song_title=Forth+1" /> <embed src="/sites/all/modules/contrib/audio/players/xspf_slim.swf" flashvars="song_url=http%3A%2F%2Ftnl-6.local%2Faudio%2Fplay%2F790&song_title=Forth+1" width="400" height="15" /> </object><br />1:04 minutes (1.23 MB)<p><a href="http://tnl-6.local/node/790" target="_blank">read more</a></p> http://tnl-6.local/node/790#comments English Water Forth river sea ship sound attenuation underwater Waves 1:04 Lindsay Sat, 10 Jan 2009 11:23:17 +0000 Lindsay 790 at http://tnl-6.local