NOAA - Great Lakes Environmental Research Laboratory
| Activity Code | Explanation |
| AC-B | Acoustics begin |
| AC-E | Acoustics end |
| ADCP-AND | ADCP-anchor deployment |
| ADCP-ANR | ADCP-anchor retrieval |
| ADCP-D | ADCP-deployment |
| ADCP-R | ADCP-retrieval |
| BOD-B | Dissolved oxygen experiments begin |
| BOD-E | Dissolved oxygen experiments end |
| BTR-B | Bottom trawl begin |
| BTR-E | Bottom trawl end |
| BUCKET | Bucket cast for water |
| CM-D | Current meter-deployment |
| CM-R | Current meter-retrieval |
| CORE B | Sediment core-box |
| CTD | Vertical CTD cast |
| CTD-C | Horizontal CTD, continuous |
| CTD-WAT | Water sample, collected with CTD cast |
| DO-CTD | Dissolved oxygen with CTD cast |
| FLAG | Flag net |
| FLI-B | FRRF begin (Twiss) |
| FLI-E | FRRF end (Twiss) |
| FLI-V | Rapid repetition flurometer/fluroprobe, stationary veritical toss (Silbe) |
| GN-RET | Gill net retrieval |
| GN-SET | Gill net set |
| HVS | High volume (aerosol) sampler |
| HYD | Hydrolab |
| HYP | Hyperspectral light meter measurement |
| IOP | IOP frame |
| LIS | LISST Sequoia |
| METB-D | Met buoy deployment |
| MWTR-B | Midwater trawl begin |
| MWTR-E | Midwater trawl end |
| PONAR | Ponar grab |
| PROF | Vertical Profile |
| PSS-B | Plankton Survey System, continuous (begin) |
| PSS-E | Plankton Survey System, continuous (end) |
| SAT | Satlantic deployment |
| SECCHI | Secchi disk |
| SIZE | Vertical profile of particle size |
| THERM-AND | Thermistor-anchor |
| THERM-ANR | Thermistor-retrieval |
| THERM-D | Thermisto stringr-deploy |
| THERM-R | Thermistor string-retrieval |
| TRAWL-B | Bottom fish trawl-continuous (begin) |
| TRAWL-E | Bottom fish trawl-continuous (end) |
| TR- B | Dye tracking begin |
| TR-E | Dye tracking end |
| TRI-D | Tripod-deployment |
| TRI-R | Tripod-retrieval |
| TRP-D | Sediment trap-deployment |
| TRP-R | Sediment trap-retrieval |
| WP-ISO | Water pumped for isotope samples (Paytan's group) |
| WP-TOX | Water pumped 1 meter below surface for tox samples, stationary (also for other epilimnion water samples) |
| WP-WI | Pumped water 1m below surface for zooplankton (Wisconsin net) |
| WP-ZP | Pumped water 1m below surface for zooplankton |
| ZNET | Vertical zooplakton net tow (64um or 153um) |
| ZNET-WI | Vertical Wisconsin net zooplakton tow (63um) |
| Z-PUMP-B | Begin pumping for zooplakton |
| Z-PUMP-E | End pumping for zooplakton |
