5 results returned
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Title: Digitization of Minnesota and Wisconsin bathymetric maps resulting in hypsographic data
Contributors:- Table data ; Point data
- 2022
- Not owned by MIT (Owned by University of Minnesota)
Summary: The data set includes hypsographic data (area-at-depth) for over 750 Minnesota and Wisconsin lakes throughout the states. The majority of these lakes (650+) did not have publicly available hypsography. The hypsography was derived by digitizing bathymetric DNR maps using ImageJ. One hundred Minnesota lakes were selected that had DNR hypsographic data (in the form of a DEM) available and a comparison between the hypsographic data derived from DEMs and ImageJ was completed. These results, as well as code and hypsographic data is all available. The purpose of this work was to release broad scale lake area-at-depth data for limnological and aquatic biology studies. Minnesota_Hypsography is a folder containing csv files of hypsographic data from Minnesota lakes. Validation_Hypsography is a folder containing csv files of hypsographic data used for validation. Wisconsin_Hypsography is a folder containing csv files of hypsographic data from Wisconsin lakes. MN_bathy.rds is an R file with interpolated depth for a subset of lakes in Minnesota. Hypso_QC.r is an R file used for quality control purposes with hypsographic data that has been digitzed. Validation_report is an R file that has the comparisons between DNR derived hypsography and ImageJ derived hypsography.
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Title: The ice age in Ohio
Contributors:- Thematic maps
- 1998
- Not owned by MIT (Owned by Ohio State Unviversity)
Summary: Includes text and ill. by Michael Hansen. "Publication date: 9/98." Revised edition 1997. Scale approximately 1:2,100,000. Text, insets and ill. on verso.
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Title: Guide to the geology along U.S. Route 23 between Columbus and Portsmouth
Contributors:- Thematic maps
- 1998
- Not owned by MIT (Owned by Ohio State Unviversity)
Summary: Text, satellite image of southern Ohio and 2 block diagrams. Panel title. Scale not given. by Michael C. Hansen. "Publication date: 8/98."
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Title: Guide to the geology along U.S. Route 23 between Columbus and Portsmouth
Contributors:- Geological maps
- 1993
- Not owned by MIT (Owned by Ohio State Unviversity)
Summary: Scale not given. Panel title. by Michael C. Hansen. Text, satellite image of southern Ohio and 2 block diagrams. "Publication date: 8/93."
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Title: Dernières explorations en Asie et dans les régions polaires 1880; dessinée par J. Hansen.
Contributors:- Not specified
- 1881
- Not owned by MIT (Owned by University of Michigan)
Summary: Relief shown by hachures. Names of explorers are in red. Shows the routes of explorers in the Arctic region and Asia. 1 map: col.; 26 x 26 cm.