Dataset: underway

Name: Underway determinations (includes Fe) from R/V Kaiyo-Maru cruise KY0103-02 from the Northwestern Sub-Arctic Pacific in 2001 (SEEDS I project)
Published: 2008-08-28
Keywords: oceans

Cite This Dataset

Spatial Extent: N:48.769 E:165.305 S:48.369 W:163.808

Project:

Subarctic-Pacific Iron Experiment for Ecosystem Dynamics Study I (SEEDS I)

Program:

Iron Synthesis (FeSynth)

Principal Investigator:

Dr Jun Nishioka (Central Research Institute of Electric Power Industry, CRIEPI)

Contact:

Doug Mackie (University of Otago)

BCO-DMO Data Manager:

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

Version:

28August2008

Version Date:

2008-08-28

Validated:

Yes

Current State:

Final no updates expected

Underway determinations (includes Fe) from R/V Kaiyo-Maru cruise KY0103-02 from the Northwestern Sub-Arctic Pacific in 2001 (SEEDS I project)

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Description

SEEDS 2001 Underway Determinations
Underway measurements made on days 3, 6, 8, 10, and 12
Includes Fe data

Methods & Sampling

The underway survey was conducted to determine the position and shape of the
patch using the ship's pumping system which had an intake at 6 m below the surface.
fCO2 and SF6 were sampled from the ships pumping system (6 m depth) at 1
and 6 minute intervals, respectively.

Sampling intervals during underway sampling of chlorophyll-a and fCO2 SF6
and iron concentration were 5-10 and 1 and 6 and 5-10 min respectively with
ship's speed of 18.5 km h-1.

Additional underway sampling was also carried out for determination of iron,
chlorophyll-a and nutrients concentrations using the clean pumping system with
a towed fish from the ship's side connected to Teflon tubing.

Dissolved Fe (<0.22 um), chl a, and nutrients (NO3, NO2, Si, PO4, NH4) were
sampled from a towed clean fish (depth not given) at 5-10 minute intervals.

Data Processing Description

Concentrations of iron in underway samples (filtered by 0.22 ?m) were determined
by flow injection analyzer with chemiluminescence detection.

SF6 concentration was determined by a twin sparge-cryogenic traps system coupled
to an electron-capture detector-gas chromatograph.

Data Files

File
Underway.csv (Comma Separated Values (.csv), 219.73 KB) MD5:6e8edb4324778fe9fb129c4e468a3408 Primary data file for dataset ID 2893

More Information about this dataset

Funding Sources

None available yet

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
KY0103-02		2001-07-13	R/V Kaiyo-Maru	Atsushi Tsuda (Chief Scientist)	data info

Instruments

None available yet

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
date	Date UTC	YYYYMMDD	date
lat	latitude, negative denotes South	decimal degrees	lat
lon	longitude, negative denotes West	decimal degrees	lon
time_local_JST	Local Time - Japan Standard Time	HHMM	time_local
speed	Ship's speed in knots	knots	speed_f_w
heading	Ship's heading in degrees	degrees	heading
SF6	SF6 concentration	fM	no_bcodmo_term
X_CO2	X_CO2	(tbd)	no_bcodmo_term
f_CO2	f_CO2	(tbd)	no_bcodmo_term
Diss_Fe	Diss_Fe	nM	no_bcodmo_term
NO3	NO3	uM	NO3
NO2	NO2	uM	NO2
Si	Si	uM	no_bcodmo_term
PO4	PO4	uM	PO4
NH4	NH4	uM	NH4
Chl_a	Chl_a	jmg/m3	chl_a

Status message

Database

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Dataset: underway