| 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 |
Cruise tracks generated from R/V Blue Heron daily files and R2R Archive Files
Date, Time, Lat, Lon
1 minute fixes
Generated by BCO-DMO staff from R/V Blue Heron daily files contributed by Elizabeth Minor and R2R Archive Files
Generated by BCO-DMO staff from R/V Blue Heron daily files contributed by Elizabeth Minor and R2R Archive Files
| File |
|---|
CruiseTracks.csv (Comma Separated Values (.csv), 2.07 MB) MD5:5e76402bbd739108f7cc8a2cd9fefa32 Primary data file for dataset ID 3503 |
| Parameter | Description | Units |
| date | date (GMT) | YYYYMMDD |
| time | time (GMT) | HHMMSS |
| lon | Station longitude (West is negative) | decimal degrees |
| lat | Station latitude (South is negative) | decimal degrees |
| cruise_id | cruise_id | text |
| Dataset-specific Instrument Name | Global Positioning System Receiver |
| Generic Instrument Name | Global Positioning System Receiver |
| Dataset-specific Description | Navigation equipment available aboard the R/V Blue Heron
a. Northstar 800 LORAN
b. Two Furuno MFD8 GPS
c. Furuno NavNet 3D radar, 12kw transmitter
d. Furuno NavNet 3D radar 6kw transmitter
e. Robertson AP45 Autopilot
f. Furuno SC110 Satellite Compass
g. TSS POS-MV Motion Referencing Unit
h. AIS system and Furuno GPS |
| Generic Instrument Description | The Global Positioning System (GPS) is a U.S. space-based radionavigation system that provides reliable positioning, navigation, and timing services to civilian users on a continuous worldwide basis. The U.S. Air Force develops, maintains, and operates the space and control segments of the NAVSTAR GPS transmitter system. Ships use a variety of receivers (e.g. Trimble and Ashtech) to interpret the GPS signal and determine accurate latitude and longitude. |
| 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 | 2010-05-28 |
| End Date | 2010-06-03 |
| Description | Cruise pictures and info (for a general audience)Original data are available from the NSF R2R data catalog |
| 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 |
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) |