CTD profiles from the Lake Superior collected during various R/V Blue Heron cruises between 2000-2002 (IRONMAN project)

Website: https://www.bco-dmo.org/dataset/655211
Data Type: Cruise Results
Version:
Version Date: 2016-08-22

Project
» Trace Metal Limitation of Phytoplankton Productivity: Combined Immunological, Geochemical and Growth Assay Approaches in Lake Superior (IRONMAN)

Program
» Laurentian Great Lakes Ecosystem Studies (Laurentian Great Lakes Ecosystem Studies)
ContributorsAffiliationRole
Sterner, Robert W.University of Minnesota DuluthPrincipal Investigator
Allison, DickyWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager
York, Amber D.Woods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Coverage

Spatial Extent: N:48 E:-84.833 S:46.667 W:-91.432
Temporal Extent: 2000-06-07 - 2002-09-13

Dataset Description

CTD profile data


Methods & Sampling

CTD casts were conducted during R/V Blue Heron cruises at designated stations.


Data Processing Description

BCO-DMO Data Manager Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* blank values replaced with no data value 'nd'


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Data Files

File
IRONMAN_CTD.csv
(Comma Separated Values (.csv), 42.02 MB)
MD5:1a67f135758bf50fb32c135de4dc6845
Primary data file for dataset ID 655211

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Parameters

ParameterDescriptionUnits
CruiseID

cruise identifier

unitless
Station

station identifier

unitless
Date

date (UTC) in format YYYYMMDD

unitless
Time

time (UTC) in format HHMMSS

unitless
Lat

latitude of the station

decimal degrees
Lon

longitude of the station; west is negative

decimal degrees
temp

temperature

degrees C
cond

actual conductivity

microSiemens per centimeter
cond_spec

specific conductance (actual conductivity at 25 degrees C)

microSiemens per centimeter
beam_trans

beam transmission

percent
fluor

fluorescence

miligrams per meter cubed
O2_mg_L

dissolved oxygen

milileters per liter
ISO_DateTime_UTC

Date/Time (UTC) in ISO format YYYY-MM-DDTHH:MM:SS[.xx]

unitless
PAR

Photosynthetically Active Radiation (Biospherical/Licor)

microEinsteins per meter squared per second
press

Pressure at time of CTD sample.

decibars


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Instruments

Dataset-specific Instrument Name
CTD Sea-Bird SBE 911plus
Generic Instrument Name
CTD Sea-Bird SBE 911plus
Generic Instrument Description
The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics

Dataset-specific Instrument Name
Generic Instrument Name
Fluorometer
Generic Instrument Description
A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.

Dataset-specific Instrument Name
Generic Instrument Name
Oxygen Sensor
Generic Instrument Description
An electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analyzed

Dataset-specific Instrument Name
Generic Instrument Name
Transmissometer
Generic Instrument Description
A transmissometer measures the beam attenuation coefficient of the lightsource over the instrument's path-length. This instrument designation is used when specific manufacturer, make and model are not known.


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Deployments

BH98-IRONMAN1

Website
Platform
R/V Blue Heron
Start Date
2000-06-07
End Date
2000-06-08
Description
locations from CTD profile stations

IRONMAN2

Website
Platform
R/V Blue Heron
Start Date
2009-09-17
End Date
2009-09-20
Description
Locations and times extracted from CTD station data

IRONMAN3

Website
Platform
R/V Blue Heron
Start Date
2001-05-29
End Date
2001-06-01
Description
Locations and times extracted from CTD station data.

IRONMAN4

Website
Platform
R/V Blue Heron
Start Date
2001-07-24
End Date
2001-07-31
Description
Locations and times extracted from CTD station data.

IRONMAN5

Website
Platform
R/V Blue Heron
Start Date
2002-09-10
End Date
2002-09-13
Description
Locations and times extracted from CTD station data.


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Project Information

Trace Metal Limitation of Phytoplankton Productivity: Combined Immunological, Geochemical and Growth Assay Approaches in Lake Superior (IRONMAN)


Coverage: Lake Superior


ABSTRACT FROM NSF AWARDS: OCE-9819324 / OCE-9902660 / OCE- 9902658

Although a number of recent studies have verified that primary production in various marine environments may be limited by trace metal availability, there has not yet been a similar body of research for freshwater systems, even the inland sea system of the North American Great Lakes. In this project researchers from the University of Minnesota, Rutgers University, and Bowling Green State University will investigate the existence, mechanisms, spatial-temporal extent, and significance of trace metal limitation to primary production in Lake Superior. They will take a three-pronged approach. First, to quantify and characterize total and bioactive trace metal concentrations, Al, Fe, Mn, Zn, Cu, Cd, and Co would be determined in solution, in suspended particles, and in plankton in the field. Secondly, immunological and fluorescence assays would be used to assess metal deficiency in algae in the field. Third, trace metal enrichment experiments would be used to assess limitation experimentally in the laboratory. The three field sites would be chosen to take advantage of existing data available from the NSF-sponsored KITES program.



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Program Information

Laurentian Great Lakes Ecosystem Studies (Laurentian Great Lakes Ecosystem Studies)


Coverage: Laurentian Great Lakes


A series of studies concerned with the chemistry and biology of the Laurentian Great Lakes.  These different studies share a focus on the dynamics of organic pools of carbon, nitrogen and phosphorus, and the stoichiometric linkages among these elements. At different times, work also has focused on trace metal dynamics and interactions with biota, the rates of primary production and herbivory, rates and patterns of primary productivity, and the century-long, steady trend of increasing nitrate in Earth's largest lake by area.  Microbial populations have been investigated and linked to these chemical properties.

This Program was created by BCO-DMO staff to bring various Laurentian Great Lakes Research projects under one umbrella for improved discovery and access.

Dates: 1998 - 2014
Funding: NSF/OCE and Minnesota Sea Grant



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Funding

Funding SourceAward
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)

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