Station locations from R/V Blue Heron cruises BH09-05, BH09-12, BH10-14, BH10-03 from the Lake Superior; 2009-2010 (Lake Superior Radiocarbon project)

Website: https://www.bco-dmo.org/dataset/3504
Version: 16 April 2013
Version Date: 2013-04-16

Project
» How important is quote old unquote Carbon in Lake Superior. A Radiocarbon Investigation (Lake Superior Radiocarbon)
ContributorsAffiliationRole
Minor, Elizabeth C.University of Minnesota DuluthPrincipal Investigator, Contact
Werne, Josef P.University of Minnesota DuluthCo-Principal Investigator
Gegg, Stephen R.Woods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Dataset Description

Station locations from CTD and CruiseTrack data
Station_Id, Date/Time UTC, Date/Time Local, Lat/Lon


Methods & Sampling

Generated by BCO-DMO staff from CTD .hdr files contributed by Elizabeth Minor


Data Processing Description

Generated by BCO-DMO staff from CTD .hdr files contributed by Elizabeth Minor


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Data Files

File
CTD_Stations.csv
(Comma Separated Values (.csv), 8.89 KB)
MD5:45b3bd5f2f7e6a133037ef155c35fd8d
Primary data file for dataset ID 3504

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Parameters

ParameterDescriptionUnits
Station_Id

Station Id from CTD filename

text
Date_UTC

Date UTC

YYYYMMDD
Time_UTC

Time UTC

HHMMSS
Date_Local

Date Local (CDST)

YYYYMMDD
Time_Local

Time Local (CDST)

HHMMSS
Latitude

Latitude (South is negative)

decimal degrees
Longitude

Longitude (West is negative)

decimal degrees
CruiseId_MonYear

Dataset descriptor by CruiseId and MonYear of Cruise/Data Collection

text

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Deployments

BH09-05

Website
Platform
R/V Blue Heron
Start Date
2009-06-12
End Date
2009-06-21

BH09-12

Website
Platform
R/V Blue Heron
Start Date
2009-08-14
End Date
2009-08-24

BH10-14

Website
Platform
R/V Blue Heron
Start Date
2010-08-25
End Date
2010-09-01
Description
Original data are available from the NSF R2R data catalog

Methods & Sampling
Note: Includes a location for Amity Creek although a CTD was not performed there.  srg/16April2013

BH10-03

Website
Platform
R/V Blue Heron
Start Date
2010-05-28
End Date
2010-06-03
Description
Cruise pictures and info (for a general audience)Original data are available from the NSF R2R data catalog


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Project Information

How important is quote old unquote Carbon in Lake Superior. A Radiocarbon Investigation (Lake Superior Radiocarbon)

Coverage: Lake Superior


Organic carbon present in aquatic ecosystems has the potential to either be sequestered by sedimentary organic matter or recycled and contributed to the atmosphere through microbial respiration. Ultimately, the fate of organic matter is dependant upon its source, as well as the physical transport mechanisms and biogeochemical transformations it is exposed to in the water column. Because these processes vary significantly within aquatic systems, such as the ocean, it is difficult to assess the biogeochemical importance of organic carbon; however, it is a problem of critical importance whose results could be utilized to resolve key issues in global biogeochemical carbon cycles and to determine the net heterotrophy of most aquatic environments.

Scientists from the University of Minnesota-Duluth and Virginia Commonwealth University would address this problem by studying organic carbon dynamics in Lake Superior because its biogeochemistry is similar to that of the world ocean. Using Lake Superior as a natural laboratory, the researchers plan to carry out radiocarbon measurements of particulate organic carbon (POC), dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), and bacterially-respired CO2, as well as obtain the chemical composition of DOC and POC during stratified and non-stratified periods. Results would be used to identify the sources of carbon in the lake and determined transformations of carbon between POC, DOC, DIC, and bacterially-respired CO2.

Educational impacts include workshops and presentation for K-12 audiences as well as research and training opportunities for graduate and undergraduate students in Water Resources Science and Biochemistry classes.

Cruise pictures and info (for a general audience)



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Funding

Funding SourceAward
NSF Division of Ocean Sciences (NSF OCE)

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