eddies – Adventures in Oceanography and Teaching

24 Days of #KitchenOceanography — Eddy in a jar

mglessmer — Fri, 11 Dec 2020 07:00:39 +0000

Welcome to 24 days of #KitchenOceanography! Both English and German instructions below. Herzlich Willkommen zu 24 Tagen Küchen-Ozeanographie! Deutsche und Englische Anleitungen weiter unten.

Source

24 Days of #KitchenOceanography — Vortex street

mglessmer — Wed, 09 Dec 2020 07:00:49 +0000

Welcome to 24 days of #KitchenOceanography! Both English and German instructions below. Herzlich Willkommen zu 24 Tagen Küchen-Ozeanographie! Deutsche und Englische Anleitungen weiter unten.

Source

Thermal forcing vs rotation tank experiments in more detail than you ever wanted to know

mglessmer — Mon, 25 May 2020 12:05:23 +0000

This is the long version of the two full “low latitude, laminar, tropical Hadley circulation” and “baroclinic instability, eddying, extra-tropical circulation” experiments. A much shorter version (that also includes the end cases “no rotation” and “no thermal forcing”) can be found here. Several of my friends were planning on teaching with DIYnamics rotating tables right now. […]

Source

Thermal forcing vs rotation

mglessmer — Sat, 23 May 2020 12:05:57 +0000

The first experiment we ever ran with our DIYnamics rotating tank was using a cold beer bottle in the center of a rotating tank full or lukewarm water. This experiment is really interesting because, depending on the rotation of the tank, it will display different regimes. For small rotations we get a low latitude, laminar, tropical […]

Source

Thermal forcing in a non-rotating vs rotating case: Totally different results

mglessmer — Sat, 23 Nov 2019 17:53:55 +0000

On Thursday, I wrote about the thermally driven overturning circulation experiment that Torge and I did as past of our “dry theory 2 juicy reality” experiments, and mentioned that it was a non-rotating experiment in a class about rotating fluid dynamics. I showed you the rectangular tank, but we also used a cylindrical tank with […]

Source

Spinning dye curtain — when a tank full of water has not reached solid body rotation yet

mglessmer — Mon, 26 Aug 2019 15:57:50 +0000

With all the rotating tank experiments I’ve been showing lately, one thing that comes up over and over again is the issue of solid body rotation. On our DIYnamics-inspired turntable for our “dry theory to juicy reality” project, Torge and I came up with a fun way to illustrate the importance of full body rotation in […]

Source

Experiment: Eddy in a jar

mglessmer — Mon, 06 Aug 2018 05:35:11 +0000

Rotating experiments in your kitchen. Eddies, those large, rotating structures in the ocean, are pretty hard to imagine. Of course, you can see them on many different scales, so you can observe them for example in creeks, as shown below: If you can’t really spot them in the image above, check out this post for […]

Source

Of swirls, eddies and fairy dust

mglessmer — Mon, 25 Sep 2017 10:54:57 +0000

Similarly to last Friday’s Kelvin-Helmholtz instabilities, observing swirls and eddies made from green fairy dust is not really what we are in Grenoble for. But are they pretty! And it is actually very interesting to observe the formation of eddies. If you look at the picture above and focus on the sharp edge “downstream” of the canyon, […]

Source

Creating eddies

mglessmer — Mon, 24 Aug 2015 09:28:18 +0000

I always love watching paddles in water, or ships in water, or ducks in water, or anything water, really, but on a wind-less day in Ratzeburg, Siska managed to create the beautiful eddies you see in the movie below, that survived well over half a minute out in the open lake! Beautiful.

Source

Diving ducky and resulting eddies

mglessmer — Wed, 01 Jul 2015 09:49:51 +0000

My sister and I did a little sight-seeing tour in Hamburg the other day, and one of the most fascinating things I saw was — a diving duck. Now, that is not a reflection of how exciting the rest of Hamburg is, but if you don’t see it after watching the movie below, when you read […]

Source