Dataset: FNPP_F1_sed_trap
Deployment: MR12-02_Leg_2

Sediment trap flux data from two traps deployed at the F1 mooring site offshore from the Fukushima Nuclear Power Plant (FNPP), 2011-2012.

Principal Investigator:

Christopher R. German (Woods Hole Oceanographic Institution, WHOI)

Contact:

Steven Manganini (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

RAPID: Time Series Sampling for Radionuclide and Biogeochemical Fluxes at F1 Time-series Station, Offshore Fukushima Dai-ichi Nuclear Power Facility (Fukushima Sediment Radionuclides)

Current State:

Preliminary and in progress

Version:

06 May 2014

Deployment Synonyms:

MR12-02

Coordinated Deployments:

Fukushima_F1_mooring

Version Date:

2014-05-06

Data URL:

https://www.bco-dmo.org/dataset-deployment/514191/data

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Description

Sediment trap flux data from two traps, at 500 m and 1000 m depth, deployed at the F1 mooring site offshore from the Fukushima Nuclear Power Plant (FNPP), 2011-2012.

Note (06 May 2014): Additional data from this sediment trap will be made available upon completion of futher analyses and manuscript publication.

Methods & Sampling

Dataset acquisition description

Time-series sampling (from 19-July-2011 to 08-May-2012; refer to data for sampling interval) was undertaken using a standard McLane PARFLUX Mk8 sediment trap. All data were generated in the WHOI PARFLUX laboratory following standard procedures (Eggiman et al., 1980; Honjo et al., 1995). Samples were processed through a 10-positon sample splitter and aliquots dried and weighed to obtain mass flux data. Further samples were then digested using standard methods to obtain concentrations per known mass of sample.

Data Processing Description

Dataset Processing Description

Sample concentrations (mass/mass) have been multiplied by mass flux results (mass/area/time) to obtain fluxes of different chemical species. Thus concentration of parameter X, is multiplied by mass flux (F-mass) to obtain flux of parameter X (F-X): F-X = F-mass x [X].

There is one area where processing has led to questionable derived results because [Ca] values were used, instead of direct analysis, to calculate % inorganic C contents. The offending cells are highlighted in red in the original Excel file at cell AN10 and cell AX10.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1139902	NSF Division of Ocean Sciences

Instruments

McLane PARFLUX Mark 8 Sediment Trap

Supplied Name: McLane PARFLUX Mark 8

Supplied Description:

Instrument Type

Generic Name: McLane PARFLUX Mark 8 Sediment Trap

Acronym: McLane PARFLUX Mark 8

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

Generic Description:

The Mark 8 Sediment Trap is a time-series instrument that autonomously collects the flux of settling particles on an operator-defined schedule. The wide top funnel accumulates particulate specimens into individual sample bottles. The cone interior is natural polyethylene. Deploys from a stand-alone mooring or a large high-tension vertical array.

McLane Mark 8 Data Sheet (PDF)
McLane website: http://www.mclanelabs.com/master_page/product-type/samplers/sediment-traps

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
sample	Sample number.	integer	sample
date_open	Date the sample cup was opened.	mm/dd/yyyy	date_begin
sampling_period	Sampling interval (number of days open).	days	days_open
trap_depth	Depth of the sediment trap.	meters	depth_trap
site	Name of the site.	text	site
lat	Latitude of the sediment trap.	decimal degrees	lat
lon	Longitude of the sediment trap.	decimal degrees	lon

Database

Contribute Data

Dataset: FNPP_F1_sed_trap
Deployment: MR12-02_Leg_2

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: FNPP_F1_sed_trapDeployment: MR12-02_Leg_2

Dataset acquisition description

Dataset Processing Description

Dataset: FNPP_F1_sed_trap
Deployment: MR12-02_Leg_2