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Images from Antarctica

Slide 2 of 15.

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Photo: The racks of instruments within the Electronics Lab are not a challenge to Stephanie Higgins. She is recording the depth readout on the dual channel echo sounder. It sends two acoustic pulses, one at 12 kHz (the high frequency) and another at 3.5 kHz (the low frequency). The chirps of the instrument can be heard throughout the ship. Both signals are important for us to interpret the nature of the seafloor and the variation in depth across the core site.

The racks of instruments within the Electronics Lab are not a challenge to Stephanie Higgins. She is recording the depth readout on the dual channel echo sounder. It sends two acoustic pulses, one at 12 kHz (the high frequency) and another at 3.5 kHz (the low frequency). The chirps of the instrument can be heard throughout the ship. Both signals are important for us to interpret the nature of the seafloor and the variation in depth across the core site.
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Cupola