Sediment trap deployment summary from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE project)

• Main Authors: Scott Nodder, Matthew A. Charette, Tom W. Trull, Dr Anya Waite, Doug Mackie
• Format: Dataset
• Language: unknown
• Published: Biological and Chemical Oceanography Data Management Office (BCO-DMO) 2008
• Subjects: oceans; Baffle; Psi; Southern Ocean
• Online Access: https://search.dataone.org/view/sha256:dfc32e2ac8be5b0822a03a1447b644b4fbdece09eaafcb18d786bc15862ac841

<p>SOIREE Sediment Trap - Deployments<br /> <br /> <strong>SOIREE traps - logistics</strong><br /> (Nodder, Charette, Waite, Trull)<br /> <br /> Note this T1, T0 for Sediment Traps<br /> Day T1 = 0000 h NZST 10/02/99 + 24 hours to 0000 h NZST 11/02/99<br /> with the nominal start of SOIREE (T0) at 0000 h NZST 10/02/99;<br /> NZST = UTC + 12 hours<br /> <br /> <em>MULTI-trap dimensions:</em><br /> Length (L, m): 0.58 <em>Trap length with baffles inserted<br /> L without baffles: 0.525 m<br /> AR without baffles: 7.50<br /> Trap volume without baffles: 2.021 litres</em><br /> Inside diameter (Di, m): 0.07<br /> Outside diameter (Do, m): 0.08<br /> Aspect ratio (AR): 8.29<br /> Aspect ratio with salt (AR): 7.29 <em>Basal brine added to a height of 1-trap diameter (7 cm)</em><br /> Collection area (A, m2): 0.00385<br /> Trap volume (V, m3): 0.00223<br /> Trap volume (V, litres): 2.232<br /> Baffle length (Lb, m): 0.08<br /> Baffle diameter (Dib, m): 0.01<br /> Baffle aspect ratio (ARb): 5.77<br /> <br /> Note: traps were deployed with a 1-D high density brine solution<br /> (excess 50 ppt NaCl) which would alter trap AR<br /> <br /> <em>Flux calculations:</em><br /> Flux (mg/m2/d) = Wt sample/(trap collection area x days deployed)<br /> <br /> Wt sample = Wtfiltered - Wtblank<br /> <br /> <em>METHOD</em><br /> Free-floating arrays of baffled, cylindrical MULTI-sediment traps.<br /> Twelve traps deployed on each cross-frame, 9 back-filled with a 1-trap diameter thick (7 cm), 50ppt excess NaCl basal brine (50 g NaCl/l) and 3<br /> with polyacrylimide gels mounted on base<br /> <br /> For all deployments and all depths:<br /> traps 1-3 = gel samples (Anya Waite)<br /> traps 4-6 = POC/PN/13Corg or mass/PSi (Scott Nodder, Tom Trull)<br /> traps 7-9 = phytopigments (Scott Nodder)<br /> <br /> For all deployments and 100 m only: traps 10-12 = Th samples (Matt Charette)<br /> <br /> For all deployments and 300 m only: traps 10-12 = POC/PN samples (Scott Nodder)<br /> <br /> Refer to Nodder &amp; Waite in DSRII<br /> &nbsp;</p>