CTD – Adventures in Oceanography and Teaching

Meeting Ran, the Autonomous Underwater Vehicle

mglessmer — Sat, 26 Oct 2019 18:26:49 +0000

Two weeks ago in Gothenburg, I was lucky enough to meet Ran, Anna Wåhlin’s Autonomous Underwater Vehicle. I posted a lot about that on Twitter, but have been wanting to combine the pics and short clips into a movie. But I just couldn’t be bothered to do something about the sound, so I put it […]

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Taking water samples

mglessmer — Tue, 02 Oct 2018 15:45:26 +0000

A big part of any oceanographic research cruise: Taking water samples. Here is a group of students practicing how to arm Niskin bottles that will go into the ocean open on both ends, and that will then, when the whole rosette is on its way up again, be closed one after another at depths that […]

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Student cruises (part 4 of many – weird profiles)

mglessmer — Mon, 16 Dec 2013 03:32:14 +0000

When a CTD profile suddenly looks really weird. As mentioned before, student cruises seem to bring out the weird experiences with CTDs. My theory is that it’s the world testing us. It would be bad enough to deal with this stuff if we were on CTD watch in the middle of the night on our […]

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Student cruise (part 3 of many, or – when the CTD didn’t start up)

mglessmer — Fri, 13 Dec 2013 04:04:20 +0000

When a CTD just doesn’t start pumping. In this post, I talked about how student cruises always happen to be on the perfect days, and then in this post I talked about how to read CTD profiles. So now knowing all of this, here is a confession: I have never seen so much weird stuff happen […]

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Student cruise (part 2 of many, or – reading CTD profiles)

mglessmer — Wed, 11 Dec 2013 03:49:12 +0000

Reading CTD profiles. In this post, I talked about student cruises and why they are important for motivation. Here I want to go into a bit more detail on one of the actual learning outcomes: Using the CTD to make measurements, and reading the profiles. I already talked about how a CTD works a while […]

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Student cruising

mglessmer — Mon, 09 Dec 2013 03:23:38 +0000

Why student cruises always end up being on the most beautiful days of the year, or: why student cruises are an important part of the education. Remember the picture I showed in the last post, that was worthy of being on an Advent calendar or postcard? The one below? That was taken on this year’s […]

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How a CTD works

mglessmer — Tue, 24 Sep 2013 03:52:21 +0000

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 […]

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