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Folders: ROOT > ScienceBase Catalog > Community for Data Integration (CDI) ( Show direct descendants )

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In 1954 researchers at the USGS Great Lakes Science Center conducted 11 research cruises on Lake Michigan during which 779 bathythermographs were cast to collect temperature profile data (temperature at depth). Bathythermographs of that era recorded water pressure and temperature data by mechanically etching them as a curve on a glass slide. Data was collected from the glass slide by projecting the image of the curve, superimposing a grid, and taking a photo of it, thereby creating a bathythermogram. Data collection personnel could then read the data from the curve. This USGS data release is a digitized set of those original bathythermogram print photos and the temperature and depth data the project team collected...
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The U.S. Geological Survey (USGS) maintains over 8,000 streamgages across the U.S. Streamgages in Illinois are operated by the USGS Illinois-Iowa Water Science Center (USGS IL-IA WSC). Gage-height data at many USGS streamgages were collected on paper-punch tapes during the period of 1965 to 1985 in Illinois. These data were not saved in the National Water Information System (NWIS) due to lack of sufficient computer storage at that time. The USGS IL-IA WSC currently has the equivalent of 2,049 years of data from 152 streamgages on paper tapes stored at the National Archive and Records Administration (NARA) Federal Records Center that are not in NWIS. All of these data need to be stored in NWIS for public use before...
    map background search result map search result map Bathythermograph Data, Lake Michigan, 1954 Gage Height Data, Friends Creek at Argenta, Illinois, 1971-1982 Gage Height Data, Friends Creek at Argenta, Illinois, 1971-1982 Bathythermograph Data, Lake Michigan, 1954