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OAS accession Detail for 0249576, meta_version: 1. Current meta_version is: 5
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| accessions_id: | 0249576 | archive |
|---|---|
| Title: | Water quality, sediment grab, and moored tripod data and CTD casts collected from R/V LAKE GUARDIAN, R/V LAURENTIAN, R/V NEESKAY, R/V SHENEHON, and fixed moorings in Lake Michigan, in the Great Lakes region for the Episodic Events - Great Lakes Experiment (EEGLE) from 1997-09-30 to 2001-05-02 (NCEI Accession 0249576) |
| Abstract: | In August, 1997 the NOAA Coastal Ocean Program and National Science Foundation Coastal Ocean Processes began a jointly funded program to study the impact of episodic plume events on sediment and constituent transport and subsequent ecological effects in Lake Michigan referred to as the Episodic Events: Great Lakes Experiment (EEGLE) project. The EEGLE project was coordinated by NOAA Great Lakes Environmental Research Laboratory. This is one of three data accessions associated with the project. The accessions include: 1) biological and water quality observations; 2) sediment observations; and 3) oceanographic observations. The EEGLE program components included a retrospective analysis of satellite imagery, water intakes, and other historical data, process and survey cruises, moored current meters, traps and data acquisition instruments and coupled hydrodynamic/sediment transport/ecological modeling. Their goal was to characterize the materials in the plume, infer their sources, and assess their potential impact on the cycling and transport of nutrients and contaminants through observations and modeling. Three fundamental hypotheses were addressed this program: 1) The plume is a result of the first winter-spring storm after ice-out and represents the resuspension of particulate materials (and associated constituents) that have been stored in the lake as surface sediment "floc" for a distribution of times, during which they have undergone differential diagenesis; 2)The forced, two-gyre vorticity wave response of the lake to episodic wind events, occasionally modified by stratification, is a major mechanism for nearshore-offshore transport of particulate matter and associated constituents in the Great Lakes; and 3) Physical processes, (e.g. resuspension, turbulence) associated with the plume event are important in determining the nutrient and light climate, and in structuring the biological communities throughout the spring isothermal period, and in setting the conditions for the critical “spring bloom” period. This accession contains the following data: - sediment trap samples collected to measure constituents (sediment size, carbon, nitrogen, phosphorus, and radioactive isotopes) and mass flux, - mass by particle size, - radionuclides in sediment cores, - transmissometer measurements, - bottom observations with a tripod (current speed and direction, water temperature, wave orbital velocity, conductivity, optical attenuation, total suspended material), and - water samples measuring total suspended matter (TSM). |
| Date received: | 20220225 |
| Start date: | 19970930 |
| End date: | 20010502 |
| Seanames: | Great Lakes |
| West boundary: | -88.1 |
| East boundary: | -84.75 |
| North boundary: | 46.2 |
| South boundary: | 41.6 |
| Observation types: | in situ, laboratory analyses |
| Instrument types: | CTD, trap - sediment |
| Datatypes: | Cesium-137, SEDIMENTS - PARTICLE SIZE FRACTIONS, SEDIMENTS - TOTAL CARBON, TRANSMISSIVITY, WATER TEMPERATURE |
| Submitter: | Mason, Lacey |
| Submitting institution: | |
| Collecting institutions: | US DOC; NOAA; OAR; Great Lakes Environmental Research Laboratory |
| Contributing projects: | |
| Platforms: | Lake Guardian (pid: 13681), LAURENTIAN (33LA), NEESKAY (32N7), SHENEHON (32UZ) |
| Number of observations: | |
| Supplementary information: | Submission Package ID: YR0UU9 |
| Availability date: | |
| Metadata version: | 1 |
| Keydate: | 2022-03-10 17:00:42+00 |
| Editdate: | 2022-03-10 17:01:17+00 |