Dataset: IRS_lipids
Deployment: EqPac-Array

Neutral lipid fluxes, sediment trap samples

Principal Investigator:

Stuart Wakeham (Skidaway Institute of Oceanography, SkIO)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. JGOFS Equatorial Pacific (EqPac)

Version:

December 7, 1995

Deployment Synonyms:

W9201B, EqPac-1, sediment trap

Version Date:

1995-12-07

Data URL:

https://www.bco-dmo.org/dataset-deployment/450805/data

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Description

Neutral lipid fluxes, Indented Rotary Sphere (IRS) Moored sediment trap samples

Methods & Sampling

Dataset acquisition description

   PI:            Stuart Wakeham
   of:            Skidaway Institute of Oceanography
   dataset:       Neutral lipid fluxes, Moored Indented Rotary Sphere sediment trap samples
   dates:         February 3, 1992 to December 13, 1992
   location:      N: 9  S: 0  W: -140  E: -140  
   project:       EqPac
   cruise/ship:   R/V Wecoma W9201B, Sediment trap mooring deployment
 
   Methodology:  Sediment trap material was filtered onto 90 mm glass fiber
   filters (A/E) and frozen.  Filters with trap material and sediments were
   Soxhlet extracted with methylene chloride-methanol (2:1) and the extracts
   partitioned into the organic phase with 5% NaCl.  The "lipid extracts"
   were saponified with 0.5N KOH/methanol, with "neutral lipids" extracted
   out of basic solution and "acids" extracted out of acidic solution.
   Neutral lipids were silylated with BSTFA and fatty acids were methylated
   with diazomethane.  Anaylsis was by gas chromatography and gas
   chromatography-mass spectrometry.

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Instruments

Sediment Trap - IRS

Supplied Name: IRS Sediment Trap

Supplied Description:

Instrument Type

Generic Name: Sediment Trap - IRS

Acronym: Sed Trap - IRS

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. The Indented Rotating Sphere (IRS) Sediment Trap is described in Peterson et al. (Field evaluation of a valved sediment trap. 1993. Limnology and Oceanography, 38, pp. 1741-1761 and Novel techniques for collection of sinking particles in the ocean and determining their settling rates. 2005. Limnology and Oceanography Methods 3, pp. 520-532). The IRS trap consists of four cylindrical modules; a particle interceptor, an IRS valve; a skewed funnel, and an eleven sample carousel (designated IRSC trap). The key to the trap design is the patented IRS valve located between the particle interceptor and particle accumulator portions of the trap. The valve and carousel are regulated by a TattleTale IVA (manufactured by Onset Computer Corp.) microprocessor and custom software. The IRS sediment trap was specifically designed to exclude zooplankton (Trull et al. 2008. Deep-Sea Research II v.55 pp. 1684-1695).

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Neutral_lipids	fluxes of neutral lipids	ng/m^2/d	no_bcodmo_term
14ROH	C14-alcohol		no_bcodmo_term
2,6,10-TMP-one	2,6,10-trimethylpentadecanone		no_bcodmo_term
15ROH	C15-alcohol		no_bcodmo_term
16ROH	C16-alcohol		no_bcodmo_term
17ROH	C17-alcohol		no_bcodmo_term
18ROH	C18-alcohol		no_bcodmo_term
phytol	phytol		no_bcodmo_term
19ROH	C19-alcohol		no_bcodmo_term
20ROH	C20-alcohol		no_bcodmo_term
21ROH	C21-alcohol		no_bcodmo_term
22ROH	C22-alcohol		no_bcodmo_term
23ROH	C23-alcohol		no_bcodmo_term
27HC	C27-alkane		no_bcodmo_term
24ROH	C24-alcohol		no_bcodmo_term
28HC	C28-alkane		no_bcodmo_term
squalene	squalene		no_bcodmo_term
25ROH	C25-alcohol		no_bcodmo_term
29HC	C29-alkane		no_bcodmo_term
26ROH	C26-alcohol		no_bcodmo_term
30HC	C30-alkane		no_bcodmo_term
27ROH	C27-alcohol		no_bcodmo_term
31HC	C31-alkane		no_bcodmo_term
27(5,22)	cholesta-5,22-dien-3B-ol		no_bcodmo_term
27(22)	cholest-22-en-3B-ol		no_bcodmo_term
28ROH	C28-alcohol		no_bcodmo_term
27(5)	choles-5-en-3B-ol		no_bcodmo_term
27(0)	cholestan-3B-ol		no_bcodmo_term
bisnorhopane	bisnorhopane		no_bcodmo_term
28(5,22)	24-methylcholesta-5,22-dien-3B-ol		no_bcodmo_term
28(22)	24-methylcholest-22-en-3B-ol		no_bcodmo_term
27(4-en-3-one)	cholest-4-en-3-one		no_bcodmo_term
28(5,24(28))	24-methylcholesta-5,24(28)-dien-3B		no_bcodmo_term
28(5)	24-methylcholest-5-en-3B-ol		no_bcodmo_term
28-diol	C28-alkane-diol		no_bcodmo_term
29(5,22)	24-ethylcholesta-5,22-dien-3B-ol		no_bcodmo_term
DM-29(5,22)	23,24-dimethylcholesta-5,22-dien-3		no_bcodmo_term
29(5)	24-ethylcholest-5-en-3B-ol		no_bcodmo_term
29(0)	24-etylcholestan-3B-ol		no_bcodmo_term
29(5,24(28))	24-ethylcholesta-5,24(28)E-dien-3B		no_bcodmo_term
30(22)	4,23,24-trimentylcholest-22-en-3B-		no_bcodmo_term
30(0)	4,23,24-trimethylcholestan-3B-ol		no_bcodmo_term
30-diol	C30-alkane-diol		no_bcodmo_term
30-keto-ol	C30-alkane keto-ol		no_bcodmo_term
homohopane	homohopane		no_bcodmo_term
37:2 alkenone	C37:2 alkenone		no_bcodmo_term
38:2 alkenone	C38:2 ethyl-alkenone		no_bcodmo_term
n9_S	Nominal latitude (north 9) of the mooring array along 140W, (S)hallow IRS trap at 1070 m below water surface.		no_bcodmo_term
n9_D	Nominal latitude (north 9) of the mooring array along 140W, (D)eep IRS trap at 4200 m below water surface.		no_bcodmo_term
n5_S	Nominal latitude (north 5) of the mooring array along 140W, (S)hallow IRS trap at 1020 m below water surface.		no_bcodmo_term
n5_D	Nominal latitude (north 5) of the mooring array along 140W, (D)eep IRS trap at 3600 m below water surface.		no_bcodmo_term
eq_S	Nominal latitude (0N) of the mooring array along 140W, (S)hallow IRS trap at 955 m below water surface.		no_bcodmo_term
eq_D	Nominal latitude (0N) of the mooring array along 140W, (D)eep IRS trap at 3460 m below water surface.		no_bcodmo_term

Database

Contribute Data

Dataset: IRS_lipids
Deployment: EqPac-Array

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: IRS_lipidsDeployment: EqPac-Array

Dataset acquisition description

Dataset Processing Description

Dataset: IRS_lipids
Deployment: EqPac-Array