JuniorAkademie Archives - Adventures in Oceanography and Teaching

Fictitious forces (1/5): Record players and Coriolis deflection

January 17, 2017

An experiment showing how seemingly straight trajectories can be transformed into curly ones. One of the phenomena that are really not intuitive to understand are fictitious forces. Especially relevant in…

The effects of rotation on a collapsing column

September 12, 2014

Comparing a rotating and non-rotating dipole. I just realized that I never explicitly showed the difference between rotation and no rotation, even though I do have the footage to do so:…

Simulations of hetonic explosions

September 10, 2014

Because sometimes it’s easier to control a computer than rotation, salinity, water and dye. After looking at a non-rotating cylinder collapse the other day, it is time to look at…

Collapsing column

September 8, 2014

Or: This is what happens to a hetonic explosion experiment without rotation. I’ve posted a lot while at JuniorAkademie a while back, so it is hard to believe there are still experiments…

Double overflow

August 30, 2014

Because sometimes one overflow simply isn’t enough. Finn’s group came up with – and ran – an overflow experiment with many different densities and even more colors. While the movie didn’t…

Cylinder collapse on a cone

August 29, 2014

Water running uphill during spin-down – how much more awesome can it get? After hours, when all but the most curious students had left, Rolf and I ran another collapsing…

Tagebuch – Tag 7

August 28, 2014

Von Carolin und Marie Am heutigen Tage wurden auch das Salz, die Dichte und die Wellen endgültig überführt. Das, was jetzt noch alles abschließt, ist die morgige Gerichtsverhandlung. Darauf haben…

Salt fingering

August 28, 2014

My absolute favorite experiment ever: salt fingering. I know I’ve said it before about another experiment, even today, but this is my absolute favorite experiment and I still get endlessly…

Hetonic explosion

August 28, 2014

Trying to tweak conditions to force a set number of vortices. We’ve done the hetonic explosion again. This time the group was super careful to calculate the Rossby radius correctly,…

Thermally driven circulation

August 28, 2014

One of my all-time favorite experiments. The salt group got a bit bored from watching ice cubes melt, so I suggested they look at temperature differences for a change, and…

Hadley cell circulation – slow rotation

August 28, 2014

In order to not be in the eddying regime, this time we are rotating our tank as slowly as possible. Since we ran the Hadley cell experiment the other day,…

Tagebuch – Tag 6

August 27, 2014

Von Carolin und Marie Heute haben sich die Lehrlinge gegenseitig ihre beantworteten Fragen vorgestellt. Vollständig überführt wurden zurzeit das Klima und die Strömungen, die Gezeiten und das Eis. Beim Salz…

Overflows

August 27, 2014

The unavoidable tank experiment when playing with Rolf ;-) After the first attempt – embarrassingly shown by the instructors – failed miserably, one of our groups ran the overflow experiment successfully.…

Currents on soap bubbles

August 27, 2014

There are currents and eddies and whirls everywhere! Today, Rolf showed us currents on soap bubbles. Check out the movie below for moving pictures!

Mixing in a non-stratified and in a stratified tank

August 27, 2014

A wind stress is applied to the surface to cause mixing. This is an experiment that I have been wanting to do for a long time, but somehow it never…

Tagebuch – Tag 5

August 26, 2014

Von Carolin (12) und Marie (13) Am heutigen Tage wurden die gesammelten Hinweise genauestens dokumentiert. Dann begannen die Lehrlinge ihren Tätern weiter auf die Schliche zu kommen. Es wurde getestet,…

Dropping slinky

August 26, 2014

The spring first pulls together, and only then falls to the ground. I saw this video of a falling slinky from Veritasium some time ago and ever since wanted to film it myself, so here…

More interference of waves, this time as seen “at sea”

August 25, 2014

“At sea” in quotes, because technically we were at the mouth of the Weser river… But still! (deutscher Text unten) The really exciting thing working with the kids here at…

Cruise on RV Uthörn

August 25, 2014

Picture dump – in german only today, sorry. So. Noch schnell die Bilder von der heutigen Ausfahrt auf der Uthörn für alle, die es gar nicht erwarten können! Hier ist…

Wave interference in a tank

August 25, 2014

Creating waves and watching them interfere. (deutscher Text unten) You might not have guessed it from reading about our waves meeting over a sandbank experiment, but we weren’t doing in…

Tagebuch – Tag 4

August 25, 2014

Von Carolin (12) und Marie (13) Heute war der Tag der Tage: Die Detektive sind mit dem Forschungsschiff Uthörn zum Tatort gereist. Zuerst mussten die Lehrlinge sehr früh aufstehen und…

Waves and sandbanks

August 25, 2014

Creating waves in a tank. (deutscher Text unten) In the big tank, we have a paddle that is really good for making big waves. And if you create them in just…

Hadley cell experiment

August 25, 2014

Cooling and rotation combined. (deutscher Text unten) I can’t believe I haven’t blogged about this experiment before now! Pierre and I have conducted it a number of times, but somehow…

Cruise preparations

August 24, 2014

Tomorrow, we’ll all go on a cruise! (deutscher Text unten) Tomorrow, we’ll take all 17 participants on a cruise on the Weser. So today, we talked about how that is…

Hetonic explosion

August 24, 2014

Or, an experiment on this blog often known as “slumping column”. (deutscher Text unten) If you don’t scale your tilting of frontal surfaces under rotation experiment correctly, you get a phenomenon…

Tagebuch – Tag 3

August 24, 2014

Von Carolin (12) und Marie (13) Am heutigen Tage waren die Lehrlinge wieder besonders fleißig, denn sie mussten sich auf die spektakuläre Reise zum Tatort vorbereiten. Doch bevor dieses geschah,…

Forced internal waves in a continuous stratification

August 24, 2014

Plus all kinds of dyes. (deutscher Text unten) Using the continuous salinity stratification created yesterday, Rolf and Daniel conducted a really cool experiment: They forced internal waves and watched them…

Creating a continuous stratification.

August 23, 2014

And watching internal waves – a data-model comparison. (deutscher Text unten) In an experiment similar to the one done by the group looking at the effects of temperature and salinity…

Tagebuch – Tag 2

August 23, 2014

Von Carolin (12) und Marie (13) Heute sind die Detektivlehrlinge schon mitten in der Planung der Experimente, aber Meisterdetektivin Glessmer erklärt vorher noch, wie sie ein Experiment vorbereiten und durchführen sollen. Die…

Hair-dryer driven surface waves

August 23, 2014

Looking at wave length, frequency and speed. (deutscher Text unten) The wave group played with a tank and a hair dryer (the hair dryer safely away from the water, obviously) and…

Effects of temperature and salinity on density and stratification

August 23, 2014

Removing a barrier between waters of different densities and watching what happens. (deutscher Text unten) Today, one of the groups performed a classical experiment (shown for example here) – but…

Tides in a rotating tank

August 23, 2014

A first attempt where gravity (due to a tilted axis of rotation) replaces the pull of the moon. (deutscher Text unten) The movie contains both a view from a co-rotating…

Why we absolutely need toy boats at the JuniorAkademie

August 23, 2014

Luckily I’m not the only one believing that we absolutely need remotely controlled boats! – Zum Glück bin ich nicht die Einzige, die findet, dass wir ferngesteuerte Boote brauchen! Mein…

Thermally-driven overturning circulation

August 23, 2014

Cooling on one end of the tank, heating on the other: A temperature-driven overturning. [deutscher Text unten] Always one of my favorite experiments – the overturning experiment (and more, and more).…

Hydraulic jumps when filling a tank

August 23, 2014

The most impressive hydraulic jump might be in the Denmark Strait, but there are others around, too! [deutscher Text unten] When filling the big wave tank with a hose, we…

The scientific method

August 23, 2014

Planning and conducting a scientific study [deutscher Text unten] Before letting loose all 17 junior scientists, we talked about the scientific method, about lab safety and common pitfalls. And now…

Tagebuch – Tag 1

August 22, 2014

Mission Ozeanographie Von Carolin (12) und Marie (13) Tag 1 Die Meisterdetektive Käse, Vogt und Glessmer wollen 17 neue Lehrlinge in 8 Tagen das Detektivleben im Hauptfall Ozean näherbringen. Kaum sind sie…

So many questions! Fragen über Fragen.

August 22, 2014

These are the questions we are hoping to answer during our 8 days at the JuniorAkademie [deutscher Text unten] 17 participants and 66 questions! We managed to cluster the topics…

Playing with remotely controlled toy boats

August 22, 2014

More toys we brought for the JuniorAkademie For the JuniorAkademie, we brought all kinds of toys. The ones that I am most excited about is this remotely controlled boat. I…

Hovercraft

August 22, 2014

Using air for reducing ship resistance and for propulsion. [deutscher Text unten] One of my favorite toys at the moment: My new hovercraft. Unfortunately, it has a couple of issues.…

Oceanography experiments deluxe: JuniorAkademie

August 22, 2014

A week-long workshop for school kids on ocean and climate, using both tank experiments and numerical models. [deutscher Text unten] Be warned: I will post a lot over the next 8…

Tag: JuniorAkademie

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