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79 results returned

  1. Title: Map shewing portion of the west coast of Vancouver Island compiled and drawn by direction of The Honerable G. B. Martin Chief Commissioner of Lands and Works.

    Contributors:

    Summary: MiU copies annotated to show land ownership. 1 map: col., mounted on cloth; 61 x 86 cm

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  2. Title: Solar Insolation, Minnesota] (2006-2012)

    Contributors:

    Summary: The Minnesota Solar Suitability Analysis attempts to provide solar insolation analysis for the entire State of Minnesota. As far as we are aware, it is the only project of its scale in existence; similar studies have been limited to metro areas or focus on rooftop insolation. The project's existence is feasible because of statewide, freely available aerial lidar coverage. And the commitment of the team to work long hours on this unfunded project. The project finds itself at the intersection of renewable energy, big data analysis, geospatial technology, and open data availability. This data provides a measure of incedent solar radiation as it is intercepted by the earth surface, or features (such as vegetation and buildings) standing above the earth surface. The data is intended to be used to assess the suitability of a site for solar panel (photovoltaic cell) installations. The analysis used to produce this dataset looks at geographic location, surface slope, surface aspect, and the effects of shading based on local topography and adjacent structures. A digital surface model was generated from raw LiDAR data. Then, using this DSM, an individual locations on a grid surface were assessed for the amount of direct and indirect radiation that reaches the surface. This analysis was conducted at a 1m resolution for the entire state of Minnesota.

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  3. Title: Digital Surface Model [Minnesota] (2006-2012)

    Contributors:

    Summary: A 1m resolution digital surface model that was generated from raw lidar data. This dataset was an intermediate product of a process to model potential solar insolation for the state of Minnesota. The Digital Surface Model (DSM) was created to represent the terrain and all object present on that terrain. This included buildings, tree cover, roads, and other natural and human-altered landscapes. In effect, the DSM is a three dimensional representation of Minnesota. It was generated using a Streaming Delauney Triangulation process through rapidlasso's LAStools software package. In this process, triangles are iteratively generated using nearby lidar returns and values for each point are determined by extracting interpolated elevation from the surface of the triangle. The result is a 1 meter resolution raster covering the state. Lidar is a form of active remote sensing technology that uses light pulses, most commonly in the near-infrared wavelengths, to collected surface elevation data. A laser scanner, mounted in an aircraft and combined with high-accuracy GPS, collects light returns that are interpolated into a point cloud. Each point represents one return from a laser pulse. The laser pulse has the ability to penetrate vegetation, multiple laser returns can be gathered for each pulse including the returns from below the vegetation.The accuracy of lidar returns allow for a unique, multi-faceted analytical dataset. The first point returns can be used to interpolate a topology of Minnesota that models the objects (i.e. building, trees, etc) and geography resting upon the terrain. The lidar point files for the state of Minnesota used in the study were collected between 2006 and 2012 through an intergovernmental initiative with the primary object of providing improved elevation data for flood mapping. In some regions, existing lidar data was acquired and transformed to new state standards. Areas where data did not exist or could not be transformed, were collected by contracted vendors. The composite data forms a seamless coverage of the state with a resolutions of at least 1.5 meters. Refer to metadata.html for full details.

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  4. Title: Keyes Landing, Highgate, Vermont, 1836 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Map of Keyes Landing on Lake Champlain, Franklin County, State of Vermont, surveyed by Alexr. Martin. It was published in 1836. Scale [ca. 1:2,400]. Covers Keyes Landing in the Highgate Springs, Vermont. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Vermont State Plane Coordinate System (Meters) (FIPS 4400). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map is a partial cadastral map showing drainage, proposed streets, parks, and property lot numbers and dimensions, selected buildings (store, tavern), and more. This layer is part of a selection of digitally scanned and georeferenced historic maps of New England from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates, scales, and map purposes.

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  5. Title: Somerville, Massachusetts, 1852 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Map of Somerville, Mass., drawn from actual survey by Martin Draper, Jr. It was published by J.T. Powers & Co.'s Lith. in 1852. Scale [1:9,600]. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map shows features such as roads, railroads, drainage, public buildings, schools, churches, cemeteries, industry locations (e.g. mills, factories, mines, etc.), private buildings, town boundaries and more. Relief is shown by hachures. This layer is part of a selection of digitally scanned and georeferenced historic maps of Massachusetts from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates (1755-1922), scales, and purposes. The digitized selection includes maps of: the state, Massachusetts counties, town surveys, coastal features, real property, parks, cemeteries, railroads, roads, public works projects, etc.

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  6. Title: Boone County, Indiana

    Contributors:

    Summary: Cadastral map showing landowners. Scale not given. Drawn by Chas. Martin.

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  7. Title: Reynolds's map of London with the latest improvements

    Contributors:

    Summary: "The map is divided into half mile squares for the purpose of measuring distance &c." Originally issued with index, folded in covers.

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  8. Title: Plan routier de la ville de Paris et de ses faubourgs: ou se trouvent indiqués tous les changemens opérés jusqu'a ce jour avec les projets d'embellissemens, les nouvles. rues et pts. pour servir de guide aux voyageurs, divise en 12 mairies municipales et par quartiers; revu et corrigé par Adée. Martin.; Nouveau plan de Paris

    Contributors:

    Summary: Includes index of streets. 1 map: col.; 55 x 78 cm. folded to 16 x 10 cm.

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  9. Title: One-hundred years of mining: alterations to the physical and cultural geographyof the western half of the Mesabi Iron Range, northern Minnesota, M-118, Plate 4

    Contributors:

    Summary: Historical and Modern Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) on the western Mesabi range, scale 1:100,000.

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  10. Title: One-hundred years of mining: alterations to the physical and cultural geographyof the western half of the Mesabi Iron Range, northern Minnesota, M-118, Plate 2

    Contributors:

    Summary: Drainage and cultural features relative to the Historical and modern land surface topography on the western Mesabi range, scale 1:100,000.

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  11. Title: One-hundred years of mining: alterations to the physical and cultural geographyof the western half of the Mesabi Iron Range, northern Minnesota, M-118, Plate 1

    Contributors:

    Summary: Historical and modern land surface topography on the western Mesabi range, scale 1:100,000.

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  12. Title: One-hundred years of mining: alterations to the physical and cultural geographyof the western half of the Mesabi Iron Range, northern Minnesota, M-118, Plate 3

    Contributors:

    Summary: Topographic disturbance between 1899 and 1999 on the western Mesabi range, scale 1:100,000.

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  13. Title: Geologic map of Minnesota, bedrock geology, S-20 (digital version 3)

    Contributors:

    Summary: Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:1,000,000, digital compilation 3rd edition.

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  14. Title: Bedrock geologic map of Virginia Horn, Mesabi Iron Range, St Louis County, Minnesota, M-85

    Contributors:

    Summary: Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Virginia Horn area, Mesabi Iron Range.

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  15. Title: Geologic map of Minnesota, bedrock geology, S-20, (digital version 2)

    Contributors:

    Summary: Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:1,000,000, digital compilation 2nd edition.

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  16. Title: Aerial gamma radiation in Minnesota and adjacent areas of North Dakota and South Dakota, M-83

    Contributors:

    Summary: Maps showing general Quaternary age surface geology of Minnesota and distribution of uranium, thorium and potassium-40 in surface sediments, scale 1:3,168,000.

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  17. Title: Geologic map of Minnesota, bedrock geology, S-20

    Contributors:

    Summary: Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:1,000,000,, digital compilation 1st edition.

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  18. Title: Geologic map of Minnesota, bedrock geology, S-19

    Contributors:

    Summary: Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:3,000,000.

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  19. Title: Reconnaissance geologic map of the Northwest quadrangle, Lake of the Woods County, Minnesota, M-74

    Contributors:

    Summary: Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments), Northwest Angle, scale 1:48,000.

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  20. Title: Distribution of arsenic in ground water and rocks, southwestern Minnesota, M-70

    Contributors:

    Summary: Map showing the distribution of Arsenic in ground water and rocks in southwestern Minnesota, scale 1 inch = 7.5 miles.

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