CTD CTD rosette CTD CTDs CTDs CTDs CTD CDT CTDs CTD CTD CTDs CTD CTDs CTDs CTDs CTDs www.whoi.edu CTD CTDs CTD CTDs CTDs http://www.whoi.edu/instruments/viewInstrument.do?id=1003 CTDs CTD CTD CTD CTD CTD CTD CTD CTDs Conductivity-Temperature-Depth (CTD)