Table 3: Draft list of deck operations to be carried out at sampling stations during Leg 3 of the 2014 CCGS Amundsen Expedition. Station type (symbol) Duration of operations Sampling operations CTD (C) ∼30 minutes 1. CTD + Nutrients (N) 1 hr Same as CTD + 1. BASIC (B) Up to 6 hrs Bottom-surface profiles of temperature, salinity, light transmittance, PAR, chlorophyll a fluorescence, oxygen and currents using the Seabird 911+ profiler with LADCP (1 CTD cast = 30 min). No water sampling Rosette sampling for high-resolution profile of nutrients and CH4 water content analyses. Same as CTD-Nutrients + 1. Additional Rosette sampling for DOC, DIC, contaminants, nutrients, total and fractionated Chl a and CDOM, phytoplankton absorption, total suspended matter, HPLC, FISH, DNA, RNA, pigment content, fatty acid markers (1 additional CTD-Rosette casts = 1 hr) 2. Light profiles with PNF and Secchi disk (30 min) 3. Box coring of bottom sediments (1 deployment = 45 min). 4. Deployment of Agassiz sledge for sampling the epibenthic fauna (1 deployment = 45 min) 5. 6-Net Vertical Sampler (6NVS) tow for the determination of zooplankton and ichthyoplankton densities (1 vertical tow = 45 min) 6. Double Square Net (DSN) tow for the determination of zooplankton and ichthyoplankton densities (1 horizontal net tow = 45 min) Full (F) Up to 12 hours Same as Basic (∼6 hrs) + 1. 2 additional CTD-Rosette deployments (2 hrs) 2. Hydrobios deployment (1 hr) 3. Bioness deployment (1 hr) 4. IKMT deployment (45 min) 5. Light-frame On-sight Key-species Investigation (LOKI) deployment (1 deployment = 1 hr) 6. MOKI zooplankton recorder deployment (1 deployment = 1 h) Additional information for operations on Leg 3: 1. Bathymetric survey offshore Scott Inlet (approx. 15 hrs); 2. Piston coring operations offshore Scott Inlet; 3. Coring operations at Basic station in Scott Inlet; 4. Triplicate box core at Full station #170 for contaminant group; 5. Piston corer or gravity corer deployment at 1 selected station in each of 3 Baffin Island fjords; 6. Opportunistic deployment of benthic beam trawl; 7. Launch of radiosondes (underway operation); 8. From Kugluktuk to Iqaluit, the CCGS Amundsen will host the ArcticNet Schools on Board program.
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