dead water – Adventures in Oceanography and Teaching

Instructions: Dead water demonstration in the GFI basement

mglessmer — Thu, 25 Oct 2018 05:26:27 +0000

This blog post is meant as guidelines if someone other than me might have to set up this demonstration at some point… Have fun! :-) Setting up the stratification If I am working fast and nothing goes wrong, this takes almost 2.5 hours. Make sure you have enough time to set this up! Filling the […]

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Demonstration: Nansen’s “dead water” in a tank!

mglessmer — Mon, 22 Oct 2018 06:00:35 +0000

A ship that is continuously pulled with a constant force suddenly slows down, stops, and then continues sailing as if nothing ever happened? What’s going on there? We will investigate this in a tank! And in order to see what is going on, we have dyed some of the water pink. Can you spot what […]

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Please discuss: Experimental setup for Nansen’s “dead water”

mglessmer — Tue, 09 Oct 2018 19:10:54 +0000

During my last visit to Bergen in August, we set up a nice “dead water” experiment. However, there are nice experiments, and then there are awesome experiments, and since Elin wants to use this experiment in her teaching of the ocean and atmosphere dynamics class, we are going for the latter! So I’ve done some […]

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“Dead water” or: ship-generated internal waves

mglessmer — Thu, 16 Aug 2018 04:15:00 +0000

And here is another experiment that can be done with the same stratification as the lee waves: Towing a ship to explore the phenomenon of “dead water”! Dead water is well known for anyone sailing on strong stratifications, i.e. in regions where there is a shallow fresh or brackish layer on top of a much […]

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