Although shipboard surveying was ancillary to the primary expedition goal, bathymetric data were integral for supporting the scientific operations. During the cruise 75,750 square kilometres (km2) of seafloor was mapped with a Kongsberg’s hull-mounted EM 120 multibeam echo sounder. The sampling areas were primarily in deep, remote waters where prior bathymetric data were either non-existent, unavailable or of poor quality. Therefore a survey of the area was required in order to make informed decisions of where to conduct effective ROV dives. Not only was the bathymetry used for planning, but the information also aided in navigation of ISIS and will be used for scientific interpretation of the collected samples.
As the expedition was science based rather than hydrographic, the survey technique differed from the traditional approach. The aim of the survey was to efficiently maximize seafloor coverage without sacrificing time allocated to the primary project goals or the quality of the data collected. Flexibility of ship routing between deployment sites, as well as optimizing vessel time during gear turnaround, allowed for nearly complete coverage of four previously unmapped seafloor features and an abundance of transit data. All data that were collected, including transit data, were processed on the ship with CARIS HIPS and SIPS. The processed data, as well as the raw files, have already been published via the Pangaea® data release platform. As a result, the bathymetric data for the area covered during this scientific cruise (JC094) are already available for use by others working in the same locations, in hope that this approach will encourage other researchers to share their data with the public.
About Teledyne CARIS
For over 35 years, Teledyne CARIS has been the leading developer of marine mapping software. Teledyne CARIS offers a highly effective solution for near real-time processing and robust quality control of sonar data and the creation and distribution of maps, charts, and digital datasets.
The Ping-to-Chart™ software is designed to deliver an integrated and seamless solution for the entire workflow of hydrographic information.
CARIS™ software offers a comprehensive level of support with training sessions, consulting, and a series of courses as well as technical support via online services, multilingual telephone support, and email.
For more information contact
Kim Holland, Communications Specialist
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