Uncovering the Unseen

Submerged microcontinents,

On my first voyage as Chief Scientist, I am fortunate to be joined by an enthusiastic team of emerging scientists from six Eastern Australian institutions, all on their first voyage into the open ocean. Our backgrounds are diverse, our expertise is interdisciplinary and we share a passion for the ocean. Falkor – our home for the month, is where we all work together with the ship’s crew and marine technicians.

We are also joined by an Artist-at-Sea

Our expedition focuses on the oceanic crust

Listening to the ocean can take many shapes: onboard Falkor we are using a range of scientific instruments to generate arrays of sound pulses, or ‘pings’, of different frequencies that are processed and translated into 3D images of the ocean floor. Our ‘pings’ reveal the detailed underwater landscapes. Along our ship track we will also tow a marine magnetometer to record the Earth's total magnetic field stored in basaltic rocks (rocks formed through volcanic activity) on the seafloor. Our magnetic recordings are contoured to show differences between magnetic intensities, which alongside other geophysical data, can be used to interpret the structure and rock characteristics of the ocean bottom.

We will also measure water column properties with a CTD (conductivity, temperature, density) instrument, and current velocities using the reflection of sound waves from particles in the water column using an ADCP (Acoustic Doppler Current Profiler). This provides information about the flow of the upper 750 m of the water column.

The natural environments of ocean, earth, and atmosphere are a single intertwined entity. On our expedition, we are examining all the layers of the ocean from the bottom, through the water column, all the way into the sky.

From ocean to inbox

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