Dataset: SedimentTraps - Particle Size

Name: Particle size summary of >10 um fraction from sediment traps from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE project)
Published: 2009-08-28
Keywords: oceans

Cite This Dataset

Project:

Southern Ocean Iron Release Experiment (SOIREE)

Program:

Iron Synthesis (FeSynth)

Principal Investigator:

Dr Anya Waite (Centre for Water Research, University of Western Australia, CWR)

Co-Principal Investigator:

Scott Nodder (New Zealand National Institute of Water and Atmospheric Research, NIWA)

Contact:

Doug Mackie (University of Otago)

BCO-DMO Data Manager:

Stephen R. Gegg (Woods Hole Oceanographic Institution, WHOI)

Version:

28August2009

Version Date:

2009-08-28

Validated:

Yes

Current State:

Final no updates expected

Particle size summary of >10 um fraction from sediment traps from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE project)

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Description

SOIREE Sediment Traps - Particle Size Summary: >10 um fraction

Methods & Sampling

See SOIREE Preliminary Voyage Report

METHOD:

Three non-brine traps deployed at each depth with polyacrylamide gels (Lundsgaard, 1995; Waite et al., 2000).

Gels dried for 12 hours, and scanned using a Nikon stereoscopic SMZ-U dissecting microscope

with an attached CCD camera and SONY Videocam (Waite et al., 2000).

Video scans were run at three different magnifications; only the largest scale (particles >10 umV
diameter, field of view 12 x 15 mm) is presented here.

The particle distribution from each scale was determined on contrast-enhanced, static images

using Optimas Image Analysis 6.0.

Refer to Nodder & Waite in DSRII

Data Processing Description

See SOIREE Preliminary Voyage Report

BCO-DMO Processing Notes

Generated from original file SOIREE_Export_final.xls, Tab: TrapParticleSize

provided on the Deep-Sea Research II 48 (2001) accompanying CD-Rom

BCO-DMO Edits

- parameter names modified to conform to BCO-DMO convention

- Blank rows in original sheet removed

- 'nd' added to blank cells

- Made column header record one line

- Re Organized original cells into rows/columns

- Dates, Times, Lat, Lons added from file: SOIREE_SedimentTraps_TrapDeploy.xls

Data Files

File
traps_PartSize.csv (Comma Separated Values (.csv), 1.10 KB) MD5:8da756c21de46c7b91db341cd370178d Primary data file for dataset ID 2869

More Information about this dataset

Funding Sources

None available yet

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
61TG_3052	SOIREE	1999-01-31	R/V Tangaroa	Philip W. Boyd (Chief Scientist)	data info

Instruments

Sediment Trap

Supplied Description:

MULTI-trap dimensions:

Length (L, m): 0.58 Trap length with baffles inserted;

L without baffles: 0.525 m

AR without baffles: 7.50

Trap volume without baffles: 2.021 litres

Inside diameter (Di, m): 0.07

Outside diameter (Do, m): 0.08

Aspect ratio (AR): 8.29

Aspect ratio with salt (AR): 7.29 Basal brine added to a height of 1-trap diameter (7 cm)

Collection area (A, m2): 0.00385

Trap volume (V, m3): 0.00223

Trap volume (V, litres): 2.232

Baffle length (Lb, m): 0.08

Baffle diameter (Dib, m): 0.01

Baffle aspect ratio (ARb): 5.77

Instrument Type

Generic Name: Sediment Trap

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/33/

Generic Description:

Sediment traps are specially designed containers deployed in the water column for periods of time to collect particles from the water column falling toward the sea floor. In general a sediment trap has a jar at the bottom to collect the sample and a broad funnel-shaped opening at the top with baffles to keep out very large objects and help prevent the funnel from clogging. This designation is used when the specific type of sediment trap was not specified by the contributing investigator.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Patch	Patch Location (In/Out)	text	no_bcodmo_term
TIME_STATION	SOIREE Experiment Day T1 = 0000 h NZST 10/02/99 + 24 hours and Trap Id Used here as station identifier	text	no_bcodmo_term
Date_Start_NZST	Start date of trap deployment (NZST)	YYYYMMDD	date_begin
Time_Start_NZST	Start time of trap deployment (NZST)	HHMM	time_begin
lat_Start	Start latitude of trap deployment negative denotes South	decimal degrees	lat_begin
lon_Start	Start longitude of trap deployment negative denotes West	decimal degrees	lon_begin
lat_End	End latitude of trap deployment negative denotes South	decimal degrees	lat_end
lon_End	End longitude of trap deployment negative denotes West	decimal degrees	lon_end
Date_End_NZST	End date of trap deployment (NZST)	YYYYMMDD	date_end
Time_End_NZST	End time of trap deployment (NZST)	HHMM	time_end
SOIREE_Day	SOIREE Day of experiment Note this T1, T0 for Sediment Traps Day T1 = 0000 h NZST 10/02/99 + 24 hours to 0000 h NZST 11/02/99 with the nominal start of SOIREE (T0) at 0000 h NZST 10/02/99; NZST = UTC + 12 hours	text	no_bcodmo_term
Station	Trap Station Id	text	no_bcodmo_term
AREA_AVERAGE	AREA AVERAGE	(tbd)	no_bcodmo_term
AREA_MAX	AREA MAX	(tbd)	no_bcodmo_term
AREA_MIN	AREA MIN	(tbd)	no_bcodmo_term
AREA_STDEV	AREA STDEV	(tbd)	no_bcodmo_term
AREA_STERR	AREA STERR	(tbd)	no_bcodmo_term
LENGTH_AVERAGE	LENGTH AVERAGE	(tbd)	no_bcodmo_term
LENGTH_MAX	LENGTH MAX	(tbd)	no_bcodmo_term
LENGTH_MIN	LENGTH MIN	(tbd)	no_bcodmo_term
LENGTH_STDEV	LENGTH STDEV	(tbd)	no_bcodmo_term
LENGTH_STERR	LENGTH STERR	(tbd)	no_bcodmo_term
Sample_Size	Sample Size	number of	no_bcodmo_term

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Dataset: SedimentTraps - Particle Size