http://blogs.ei.columbia.edu Tue, 21 May 2013 15:39:03 +0000 en-US hourly 1 http://wordpress.org/?v=3.5.1 http://blogs.ei.columbia.edu/2012/05/19/lucky-thirteen-gets-us-250000-years-of-sediment/ http://blogs.ei.columbia.edu/2012/05/19/lucky-thirteen-gets-us-250000-years-of-sediment/#comments Sun, 20 May 2012 02:41:18 +0000 Pratigya Polissar http://blogs.ei.columbia.edu/?p=26950 We have been steaming and searching for locations on the seafloor where the sediments are accumulating undisturbed. We tried without luck to take cores at several promising locations, however the cores came up less than perfect. On our thirteenth core attempt of the cruise we got lucky.]]> http://blogs.ei.columbia.edu/2012/05/19/lucky-thirteen-gets-us-250000-years-of-sediment/feed/ 0 http://blogs.ei.columbia.edu/2012/05/09/drilling-ancient-mud-from-seafloor-no-easy-task/ http://blogs.ei.columbia.edu/2012/05/09/drilling-ancient-mud-from-seafloor-no-easy-task/#comments Thu, 10 May 2012 03:01:07 +0000 Pratigya Polissar http://blogs.ei.columbia.edu/?p=26356 Yesterday we left our first study region with new samples from the seafloor and a healthy respect for the ocean currents that can erode sediment deep in the ocean. The seafloor we surveyed was heavily eroded and we had to look carefully before finding sites that were promising enough to try sampling. Even then we ran into difficulties getting the sediments back to the ship.]]> http://blogs.ei.columbia.edu/2012/05/09/drilling-ancient-mud-from-seafloor-no-easy-task/feed/ 1 http://blogs.ei.columbia.edu/2012/05/06/through-the-looking-glass-peering-through-the-bottom-of-the-ocean/ http://blogs.ei.columbia.edu/2012/05/06/through-the-looking-glass-peering-through-the-bottom-of-the-ocean/#comments Sun, 06 May 2012 08:02:49 +0000 Pratigya Polissar http://blogs.ei.columbia.edu/?p=26122 Alice stepped through the mirror to see the world beyond, and we peer through the bottom of the ocean to see what is below. Short pulses of sound from the ship are focused on the seafloor, and we listen to the echo and reverberations that return.]]> http://blogs.ei.columbia.edu/2012/05/06/through-the-looking-glass-peering-through-the-bottom-of-the-ocean/feed/ 3 http://blogs.ei.columbia.edu/2012/04/30/why-i-care-about-the-bottom-of-the-ocean/ http://blogs.ei.columbia.edu/2012/04/30/why-i-care-about-the-bottom-of-the-ocean/#comments Mon, 30 Apr 2012 08:38:38 +0000 Pratigya Polissar http://blogs.ei.columbia.edu/?p=25836 It is the middle of the night and I am wide awake thinking about the ocean, specifically the bottom of the ocean. Is it rocky? Jumbled? Smooth? Rocky is bad. Jumbled is bad. Smooth is good.]]> http://blogs.ei.columbia.edu/2012/04/30/why-i-care-about-the-bottom-of-the-ocean/feed/ 4