The acronym STEM
Sound Under the Waves
To create a map of the seafloor we use sound. We send sound at a known velocity towards the seafloor, and it bounces off whatever it touches first – usually the bottom. knowing the time the sound takes to return to our transducer, we can calculate what the distance is between us and the object it reflected from. If we send enough points of sound towards the seafloor, we can work out its shape: we call this bathymetry
Scientists like Mardi are also interested in what the seabed is made of and its shape. Seafloor mapping allows us to assess the complexity and scale of natural seabed structures, such as reef-like algal bioherms, which provide habitat for marine life. Understanding the location and scale of this important marine habitat will help us to better manage and conserve the ocean as a whole.
Science and engineering often use the same data. It is exciting to be spending time with scientists who are also interested in seabed structures even if their focus-areas are natural while mine are made by humans. For the best ongoing management of both natural and human structures, we can work together to collect the best data possible with ever improving technology.
