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OAS accession Detail for 0253360
| << previous | |revision: 6 |
| accessions_id: | 0253360 | archive |
|---|---|
| Title: | Physical, chemical, and biological water quality data and CTD casts collected from R/V LAKE GUARDIAN, R/V LAURENTIAN, R/V NEESKAY, AND R/V SHENEHON, in Lake Michigan, in the Great Lakes region for the Episodic Events - Great Lakes Experiment (EEGLE) from 1997-10-01 to 2001-07-25 (NCEI Accession 0253360) |
| 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: - bacterial abundance and production, - CTD surface and water column casts, - KPAR and chlorophyll measurements from optical instruments, - microzooplankton abundance, - water sample analysis for nitrogen cycling, - water sample analysis for nutrients, and - trawl data from an optical plankton counter referred to as the Plankton Survey System (PSS) and associated CTD casts. |
| Date received: | 20220426 |
| Start date: | 19971001 |
| End date: | 20010725 |
| Seanames: | |
| West boundary: | -88.1 |
| East boundary: | -84.75 |
| North boundary: | 46.2 |
| South boundary: | 41.6 |
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| Submitter: | Mason, Lacey |
| Submitting institution: | US DOC; NOAA; OAR; Great Lakes Environmental Research Laboratory |
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| Metadata version: | 6 |
| Keydate: | 2022-05-06 18:02:29+00 |
| Editdate: | 2025-04-18 19:02:31+00 |