The video showing milk being poured into water is an example of the small-scale process ‘turbulence’. In the ocean, turbulence is important for mixing of different water masses. We measure turbulence with a Micro Structure Sonde (MSS) by letting the instrument fall freely down the water column, recording temperature changes and water movement at a frequency of 1024Hz.
If you are interested in reading more about this, check out Mirjam’s blogposts on how to sample and how to measure dissolved oxygen! And a special post with focus on the color change of the indicator when titrating oxygen.
This blogpost is one of a series written originally for our Insta-takeover of @PortalenIGLO, by the awesome night watch team Elina, Helene, Julie, and Sonja. Check out the twitter accounts of Elina and Sonja for updates on what they are doing when they are not at sea with us!