Mirjam Sophia Glessmer

How a CTD works

Movie on how the most important instrument in oceanography works.

On our cruise on the WHOI research vessel Knorr in 2011, Sindre Skrede (find him on twitter or vimeo for many more exciting pictures and movies!) and I made a movie for his blog, describing the most important oceanographic instrument. We recently translated the movie from Norwegian to English and here it is. Enjoy!

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  1. […] sampled in Niskin bottles on a CTD (For how the CTD and the water sampling in Niskin bottles works, see this blog post). We’ll start when the CTD comes back to the surface and sea water from various depths is […]

  2. […] to know how we describe this thing if we can use more words than just those 1000, check out the brilliant movie that Sindre Skrede made 5 years ago […]

  3. […] to know how we describe this thing if we can use more words than just those 1000, check out the brilliant movie that Sindre Skrede made 5 years ago […]

  4. […] and depth (actually measuring pressure, which converts easily into depth). I contributed to a very nice movie about how CTDs work a couple of years ago, check it […]

  5. […] the instrument is deployed into the water, it is not just lowered down in the way a CTD is, but it has to be free-falling through the water. In order to achive that, the person running […]

  6. […] #CTDAppreciationDay, on January 22nd, is an amazing example of how social media can bring a community together around a common passion, in this case an oceanographic instrument. […]

  7. […] team that deploys surface drifters and interprets the trajectories later on, and the “CTD” team that takes profiles of temperature, salinity and other properties of the water column and then […]

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