In my first blog entry, I mentioned that I am working with data collected by the CTD (conductivity, depth, and temperature) divers that were deployed at the head of the DeSoto Canyon. Deep-C researchers have several mooring stations in the DeSoto Canyon area, but these particular instruments were located at mooring sites 1 and 3 (see Figure 1 for the mooring locations). These instruments were attached to mooring cables that were anchored to the ocean floor with three locomotive (train) wheels. The instruments were placed 5 to 10 meters apart along the cable. The mooring cable was held upright with flotation spheres, and the top of the cable was 15 meters below the surface to, hopefully, avoid fouling by boats. A marker float was attached to the top of the mooring with a 20-meter string. (Figure 2 is a diagram of the mooring cable deployed at Mooring 1.) As it turns out, the cable at mooring 3 was broken, probably by a trawling net, and all but the two instruments were lost.
|Figure 1: Mooring sites 1 and 3 in the DeSoto Canyon area.|
|Figure 2: A diagram of the mooring cable deployed at Mooring 1.|
|Figure 3: A new CTD Diver (left) and one of the recovered instruments (right).|
|Figure 4: Using MATLAB and Excel to plot the collected data.|
Dana Fields (Florida State University)