Life in the Internal Hydraulic Jump

The ocean’s inhabitants are strongly dependent on conditions in the environment in which they live.

The ocean’s inhabitants are strongly dependent on conditions in the environment in which they live. The hydraulic jump that we are studying

In this way, the hydraulic jump may in effect be fertilizing the upper layer of the ocean near Kaena Ridge, allowing larger phytoplankton populations to grow in its wake. Because phytoplankton are the base, their enhanced growth would feed the animals in the region all the way up the food chain, increasing overall abundance in the local ecosystem.

On Falkor, we are gathering data that we will use to characterize the ways the hydraulic jump affects the nearby ocean life. The CTD (Conductivity-Temperature-Depth) instrument

Expanded View


Additionally, Falkor has sonar

We are also collecting water samples from multiple locations over the ridge at various depths using large bottles attached to the CTD. These samples will allow us to quantify nutrient concentrations, count the number of phytoplankton present, and identify other small organisms in the water including types of zooplankton. In other words, they will give us a better picture of what our other data, such as the signals from the sonar, may be telling us.

The data from the Falkor cruise will help us understand what role the hydraulic jump plays in the local marine ecosystem. Our understanding of the ocean allows us to make predictions of the kinds of things we may observe, but the ocean is a complex environment and there is still plenty of room for us to be surprised. The element of discovery is what makes scientific research exciting.

From ocean to inbox

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