Northern Shrimp Research Foundation (NSRF) CTD Profiles

The NSRF conducts shrimp research surveys in the Eastern Assessment zone (EAZ) and Western Assessment zone (WAZ). Using a DFO designed shock-absorbing CTD sled containing a Seabird model SBE-19plus CTD the NSRF shrimp surveys collect physical oceanographic data (e.g., T, S) at each fishing set since 2005.

The package attached to the trawl head-ropes records time, water pressure, temperature, and conductivity for the duration of the fishing set. In addition, the NSRF survey collects CTD data and water samples from vertical rosette profiles since 2022 in collaboration with the Atlantic Zone Monitoring Program (AZMP). This sampling is conducted according to standard procedures developed by AZMP and includes the collection of CTD profiles and water samples for the determination of physical (e.g., T, S), chemical (e.g., nutrients), and biological (chl a) variables and vertical ring net tows.