| Contributors | Affiliation | Role |
|---|---|---|
| Minor, Elizabeth C. | University of Minnesota Duluth | Principal Investigator, Contact |
| Werne, Josef P. | University of Minnesota Duluth | Co-Principal Investigator |
| Gegg, Stephen R. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Station locations from CTD and CruiseTrack data
Station_Id, Date/Time UTC, Date/Time Local, Lat/Lon
Generated by BCO-DMO staff from CTD .hdr files contributed by Elizabeth Minor
Generated by BCO-DMO staff from CTD .hdr files contributed by Elizabeth Minor
| File |
|---|
CTD_Stations.csv (Comma Separated Values (.csv), 8.89 KB) MD5:45b3bd5f2f7e6a133037ef155c35fd8d Primary data file for dataset ID 3504 |
| Parameter | Description | Units |
| 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 |
| Website | |
| Platform | R/V Blue Heron |
| Start Date | 2009-06-12 |
| End Date | 2009-06-21 |
| Website | |
| Platform | R/V Blue Heron |
| Start Date | 2009-08-14 |
| End Date | 2009-08-24 |
| 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 |
| 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 |
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.
| Funding Source | Award |
|---|---|
| NSF Division of Ocean Sciences (NSF OCE) |