Search for geospatial/GIS data

Find GIS data held at MIT and other institutions

552 results returned

  1. Title: Gutenko Nunataks: Antarctica

    Contributors:

    Summary: Projection: Lambert Conformal Conic Projection: Standard Parallels -76º40' and -79º20'; Series: USGS 1:250,000 Geologic Reconnaissance Series

    View full record

  2. Title: Guest Peninsula: Antarctica

    Contributors:

    Summary: Projection: Lambert Conformal Conic Projection: Standard Parallels -76º40' and -79º20'; Series: USGS 1:250,000 Geologic Reconnaissance Series

    View full record

  3. Title: Boyd Glacier: Antarctica

    Contributors:

    Summary: Projection: Lambert Conformal Conic Projection: Standard Parallels -76º40' and -79º20'; Series: USGS 1:250,000 Geologic Reconnaissance Series

    View full record

  4. Title: Alexandra Mountains: Antarctica

    Contributors:

    Summary: Projection: Lambert Conformal Conic Projection: Standard Parallels -76º40' and -79º20'; Series: USGS 1:250,000 Geologic Reconnaissance Series

    View full record

  5. Title: Atlas of Sioux County, Iowa, circa 1928

    Contributors:

    Summary: No known copyright restrictions. University of Iowa. Libraries. Map Collection

    View full record

  6. Title: Inland Trawl Blocks: California, 2006

    Contributors:

    Summary: For decades, California fishery reporting and management has been organized and documented using a 10 minute latitude-longitude (10 minute) grid, known colloquially as 'California Trawl Blocks'. In recent years, however, a need has developed for finer (smaller area) grid blocks to record catch and develop habitat maps and models, especially in coastal nearshore waters and for residential and sessile species. This polygon shapefile of 1 minute latitude-longitude (1 minute) blocks was created to nest within the original 10 minute latitude-longitude blocks, thus allowing the transfer of 10 minute historic and current catch data to each of the 100 1 minute cells within. The 1 minute blocks in this shapefile extend inland to include coastal areas, estuaries and bays. This shapefile is a polygon file, not a raster file, therefore, area for each 1 minute cell may be unique. This coverage provides a systematic polygonal grid that allows the ocean to be divided into 1 minute latitude-longitude administrative blocks for the purpose of management, analysis and defense of California's natural marine resources. Specifically, the California Recreational Fisheries Survey (CRFS) project has adopted these block sequence codes to gather recreational fisheries information statewide. Boundaries were drawn on Latitudinal and Longitudinal one minute lines from the furthest south and West Longitude and Latitude line to the furthest North and East. This Grid was then clipped to the Caltrawl ten nautical mile grid and the remaining blocks referenced and indexed. The vector drawing program used by ET Geowizards created artifacts in the form of slivers - Please see "Process Step" Tab for detailed instructions of how the Grid was created, edited and indexed. Reprojecting the shapefile may increase and/or decrease the magnitude of this error. King, Howatt and Wade, Gina. (2006). Inland Trawl Blocks: California, 2006. California. Department of Fish and Game. Marine Resources Region. Available at: http://purl.stanford.edu/rf806nt4939. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

    View full record

  7. Title: Causes of Forest Fragmentation in the United States (270 Meter Resolution), 1992

    Contributors:

    Summary: This raster image is a 270-meter resolution grid map of the conterminous United States in GeoTIFF format, created from National Land Cover Data (NLCD). The NLCD data was reclassified into four categories: forest, other natural (e.g. grassland, wetland, etc.), human land use (e.g. agriculture, urban, etc.), and nodata (water, ice and snow, and bare rock/sand). A 9 x 9-pixel moving window was then used to generate forest edge measurements for every pixel, regardless of its class. Within each window, the edges of all forest pixels were examined to determine what type of land cover shared each edge. Three new grids were created, one for each edge type (forest-forest, forest-natural, and forest-human). The values in these grids were calculated as the number of edges with the appropriate type in the window divided by the total number of forest edges, regardless of neighbor. These grids represented forest connectivity (forest-forest edges), naturally caused forest fragmentation (forest-natural edges), and human caused forest fragmentation (forest- human edges). In the map, forest connectivity is displayed in green, natural fragmentation in blue, and human fragmentation in red. Yellow indicates areas that are an approximately equal mix of connected forest and human fragmentation, while cyan indicates areas that are an approximately equal mix of connected forest and natural fragmentation. Black represents areas with no forest in the 9 x 9-pixel window; white represents ignored or nodata areas, such as water, ice and snow, and bare rock/sand. Forest fragmentation has been studied extensively and can be quantified in several ways. This map layer is the first to identify sources of forest fragmentation, separating fragmentation into human and natural components. The data may be a useful tool for decision makers in identifying areas for protection or restoration. Areas displayed in yellow represent transition zones between connected forest and human-fragmented forest. Because human land uses tend to expand over time, these areas will be the most likely to experience further degradation. In time, the transition zones may become highly fragmented and new transitional areas will appear deeper in the intact forest. Consequently, the yellow areas in the map may represent excellent opportunities for protection or restoration. Protecting transitional and adjacent areas may limit further expansion or degradation of the transitional areas. Restoration efforts to eliminate or reduce fragmentation may produce larger patches of connected forest. Wade, Tim. (2004). Causes of Forest Fragmentation in the United States (270 Meter Resolution), 1992. National Atlas of the United States. Available at: http://purl.stanford.edu/zt983db2960. Downloadable data is scaled from 0 to 100 and is meant to be used in analyses. For display purposes, it is recommended that the data be rescaled from 0 to 255 to capture the full spectrum of possible fragmentation combinations. Colors are subdued and yellows and cyans may be missing in the display, using data scaled from 0 to 100. These data are based on National Land Cover Data (NLCD). Information about NLCD is available online at: <http://landcover.usgs.gov/natllandcover.asp>. For additional information see Vogelmann, J.E., S.M. Howard, L. Yang, C.R. Larson, B.K. Wylie, and N. van Driel. 2001. Completion of the 1990s National land cover data set for the conterminous United States from Landsat Thematic Mapper data and ancillary data sources. Photogrammetric Engineering and Remote Sensing 67: 650-662. The data are stored in three bands, one each for forest connectivity (Pff), human fragmentation (Pfa), and natural fragmentation (Pfn). Values have been scaled from 0 to 100, with -9999 (nodata) where the NLCD identified water, ice and snow, or bare rock/sand (classes 11, 12 and 31). Values of 0 occur where the 9 x 9-pixel window contained no forest pixels or where all forest pixels were surrounded by nodata pixels. A value of 100 indicates a window where all forest pixel edges adjoin only one class. For example, a 100 in the forest connectivity band means all forest pixels in the window are adjacent to other forest pixels or a nodata pixel. It does not necessarily mean that all pixels in the window are forest. To display these data, it is highly recommended that their values be stretched to range from 0 to 255. This will brighten and enhance the contrast in the image. Detailed information on the algorithms used to process the NLCD data to create a global fragmentation map can be found in: Wade, T.G, K.H. Riitters, J.D. Wickham, and K.B. Jones, 2003. Distribution and causes of global forest fragmentation. Conservation Ecology 7(2): 7. [online] URL: <http://www.consecol.org/vol7/iss2/art7>. Similar procedures were used to create this map layer. The United States Environmental Protection Agency (EPA), through its Office of Research and Development (ORD), partially funded and collaborated in this work under Interagency Agreement DW12939283-01-0 with the United States Department of Agriculture. It has been subjected to Agency review and approved for publication. The associated world file is included as part of the GeoTIFF. The contents of the world file are: >270.0000 >0.000000 >0.000000 >-270.0000 >-2262865.0000 >1038776.0000 The following projection file can be used when using ESRI's ArcGIS to view the GeoTIFF (any line breaks should be removed): PROJCS["NAD_1983_Lambert_Azimuthal_Equal_Area",GEOGCS ["GCS_Sphere_ARC_INFO",DATUM["D_Sphere_ARC_INFO",SPHEROID ["Sphere_ARC_INFO",6370997.0,0.0]],PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433]],PROJECTION ["Lambert_Azimuthal_Equal_Area"],PARAMETER["False_Easting",0.0], PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian", -100.0],PARAMETER["Latitude_Of_Origin",45.0],UNIT["Meter",1.0]] None. Acknowledgment of the National Atlas of the United States of America, the U.S. Environmental Protection Agency, the U.S. Forest Service, and (or) the U.S. Geological Survey would be appreciated in products derived from these data. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

    View full record

  8. Title: Causes of Forest Fragmentation in the United States (540 Meter Resolution), 1992

    Contributors:

    Summary: This raster layer is a 540 meter resolution grid map of the conterminous United States in GeoTIFF format, created from National Land Cover Data (NLCD). The NLCD data was reclassified into four categories: forest, other natural (e.g. grassland, wetland, etc.), human land use (e.g. agriculture, urban, etc.), and nodata (water, ice and snow, and bare rock/sand). A 9 x 9-pixel moving window was then used to generate forest edge measurements for every pixel, regardless of its class. Within each window, the edges of all forest pixels were examined to determine what type of land cover shared each edge. Three new grids were created, one for each edge type (forest-forest, forest-natural, and forest-human). The values in these grids were calculated as the number of edges with the appropriate type in the window divided by the total number of forest edges, regardless of neighbor. These grids represented forest connectivity (forest-forest edges), naturally caused forest fragmentation (forest-natural edges), and human caused forest fragmentation (forest- human edges). In the map, forest connectivity is displayed in green, natural fragmentation in blue, and human fragmentation in red. Yellow indicates areas that are an approximately equal mix of connected forest and human fragmentation, while cyan indicates areas that are an approximately equal mix of connected forest and natural fragmentation. Black represents areas with no forest in the 9 x 9-pixel window; white represents ignored or nodata areas, such as water, ice and snow, and bare rock/sand. This layer is part of the 1997-2014 edition of the National Atlas of the United States. Forest fragmentation has been studied extensively and can be quantified in several ways. This map layer is the first to identify sources of forest fragmentation, separating fragmentation into human and natural components. The data may be a useful tool for decision makers in identifying areas for protection or restoration. Areas displayed in yellow represent transition zones between connected forest and human-fragmented forest. Because human land uses tend to expand over time, these areas will be the most likely to experience further degradation. In time, the transition zones may become highly fragmented and new transitional areas will appear deeper in the intact forest. Consequently, the yellow areas in the map may represent excellent opportunities for protection or restoration. Protecting transitional and adjacent areas may limit further expansion or degradation of the transitional areas. Restoration efforts to eliminate or reduce fragmentation may produce larger patches of connected forest. Wade, Tim. (2004). Causes of Forest Fragmentation in the United States (540 Meter Resolution), 1992. National Atlas of the United States. Available at: http://purl.stanford.edu/hf653vx2307. Downloadable data is scaled from 0 to 100 and is meant to be used in analyses. For display purposes, it is recommended that the data be rescaled from 0 to 255 to capture the full spectrum of possible fragmentation combinations. Colors are subdued and yellows and cyans may be missing in the display, using data scaled from 0 to 100. These data are based on National Land Cover Data (NLCD). Information about NLCD is available online at: <http://landcover.usgs.gov/natllandcover.asp>. For additional information see Vogelmann, J.E., S.M. Howard, L. Yang, C.R. Larson, B.K. Wylie, and N. van Driel. 2001. Completion of the 1990s National land cover data set for the conterminous United States from Landsat Thematic Mapper data and ancillary data sources. Photogrammetric Engineering and Remote Sensing 67: 650-662. The data are stored in three bands, one each for forest connectivity (Pff), human fragmentation (Pfa) and natural fragmentation (Pfn). Values have been scaled from 0 to 100, with -9999 (nodata) where the NLCD identified water, ice and snow, or bare rock/sand (classes 11, 12 and 31). Values of 0 occur where the 9 x 9-pixel window contained no forest pixels or where all forest pixels were surrounded by nodata pixels. A value of 100 indicates a window where all forest pixel edges adjoin only one class. For example, a 100 in the forest connectivity band means all forest pixels in the window are adjacent to other forest pixels or a nodata pixel. It does not necessarily mean that all pixels in the window are forest. To display these data, it is highly recommended that their values be stretched to range from 0 to 255. This will brighten and enhance the contrast in the image. Detailed information on the algorithms used to process the NLCD data to create a global fragmentation map can be found in: Wade, T.G, K.H. Riitters, J.D. Wickham, and K.B. Jones, 2003. Distribution and causes of global forest fragmentation. Conservation Ecology 7(2): 7. [online] URL: <http://www.consecol.org/vol7/iss2/art7>. Similar procedures were used to create this map layer. The United States Environmental Protection Agency (EPA), through its Office of Research and Development (ORD), partially funded and collaborated in this work under Interagency Agreement DW12939283-01-0 with the United States Department of Agriculture. It has been subjected to Agency review and approved for publication. The associated world file is included as part of the GeoTIFF. The contents of the world file are: >540.0000 >0.000000 >0.000000 >-540.0000 >-2262730.0000 >1038730.0000 The following projection file can be used when using ESRI's ArcGIS to view the GeoTIFF (any line breaks should be removed): PROJCS["NAD_1983_Lambert_Azimuthal_Equal_Area",GEOGCS ["GCS_Sphere_ARC_INFO",DATUM["D_Sphere_ARC_INFO",SPHEROID ["Sphere_ARC_INFO",6370997.0,0.0]],PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433]],PROJECTION ["Lambert_Azimuthal_Equal_Area"],PARAMETER["False_Easting",0.0], PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian", -100.0],PARAMETER["Latitude_Of_Origin",45.0],UNIT["Meter",1.0]] None. Acknowledgment of the National Atlas of the United States of America, the U.S. Environmental Protection Agency, the U.S. Forest Service, and (or) the U.S. Geological Survey would be appreciated in products derived from these data. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

    View full record

  9. Title: Minnesota route, the shortest and best to the Idaho gold mines

    Contributors:

    Summary: (W 126°--W 86°/N 50°--N 38°). Relief shown by hachures and spot heights. "Entered according to act of Congress in the year 1864 by D.D. Merrill in the clerks office of the district court of the district of Minnesota." 42 x 106 centimeters Scale approximately 1:1,540,000 General Map Collection

    View full record

  10. Title: Surficial geology of the Mesabi Iron Range, Minnesota, M-164

    Contributors:

    Summary: Quaternary geology map showing interpretations of Quaternary (Pleistocene [glacial] and Holocene [post-glacial]) surficial geology (distribution and type of materials at the land surface), of the Mesabi Iron Range, scale 1:100,000.

    View full record

  11. Title: Yellowstone/Missouri River, 1860 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Map of the Yellowstone and Missouri Rivers and their tributaries, explored by Capt. W.F. Raynolds and 1st Lieut. H.E. Maynadier. It was published by the U.S. War Department in 1860. Scale 1:1,200,000. The image inside the map neatline is georeferenced to the surface of the earth and fit to the North American Lambert Conformal Conic coordinate system. 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, index maps, legends, or other information associated with the principal map. This map shows features such as roads, drainage, cities and other human settlements, territorial boundaries, fortifications, shoreline features, and more. Relief shown by hachures. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

    View full record

  12. Title: Grazing lands, western United States : (general location and area)

    Contributors:

    Summary: S. Doc. 189.58.3. Scale approximately 1:2,250,000 General Map Collection

    View full record

  13. Title: Chart of Isle Royal including north west coast of Lake Superior; projected and drawn from trigonometrical surveys executed under the direction of Brt. Brig. Genl. W.F. Raynolds ... in 1867, 1868 and 1869, and Major C.B. Comstock ... in 1870 and 1871.

    Contributors:

    Summary: Relief shown by hachures; depths shown by contours and soundings. "Aids to navigation corrected to November 1, 1886." "Reduction for engraving by Edw. Molitor." "Engraved by W.H. Dougal." At head of title: Survey of the northern and north western lakes made in obedience to acts of Congress and orders from the headquarters of the Corps of Engineers, War Department. Includes "sailing directions," "harbors and anchorages," "magnetic declinations," "water table," and notes. Insets: Chart of Todd's Harbor -- Chart of part of Rock Harbor -- Chart of Washington and Grace Harbors. 1 map; 71 x 109 cm.

    View full record

  14. Title: A plan of the city of New York in the yeare [sic] 1664 : compiled from olde maps & documents showing land grants

    Contributors:

    Summary: Selected buildings shown pictorially.; Shows land ownership, with overlay of modern street locations and names.; Includes index of points of interest, with descriptions and brief histories; official seals of New Netherland, New York City, New Amsterdam, and New York state; flags flying over New York over time. 36 x 31 centimeters Scale approximately 1:2,215 City Maps

    View full record

  15. Title: Global GIS : Geology of the conterminous United States at 1:2,500,000 scale : Geology

    Contributors:

    Summary: This datalayer is a polygon coverage representing geologic regions of the conterminous United States. It is a digital version of the geology features of H.M. Beikman and P.B. King's Geologic Map of the United States, originally published at a scale of 1:2,500,000 (1974). This version of the datalayer was published as part of the USGS Global GIS : global coverage database (2003). The USGS Global GIS database contains a wealth of USGS and other public domain data, including global coverages of elevation, landcover, seismicity, and resources of minerals and energy at a nominal scale of 1:1 million. The U.S. Geological Survey (USGS) and The American Geological Institute (AGI) announced a cooperative agreement that will focus on making the USGS Global Geographic Information System (GIS) database readily available to educators and the general public in the form of a DVD based world atlas.

    View full record

  16. Title: Global GIS : Geology of the conterminous United States at 1:2,500,000 scale : Faults

    Contributors:

    Summary: This datalayer is a polyline coverage representing geologic faults of the conterminous United States. It is a digital version of the fault features of H.M. Beikman and P.B. King's Geologic Map of the United States, originally published at a scale of 1:2,500,000 (1974). This version of the datalayer was published as part of the USGS Global GIS : global coverage database (2003). The USGS Global GIS database contains a wealth of USGS and other public domain data, including global coverages of elevation, landcover, seismicity, and resources of minerals and energy at a nominal scale of 1:1 million. The U.S. Geological Survey (USGS) and The American Geological Institute (AGI) announced a cooperative agreement that will focus on making the USGS Global Geographic Information System (GIS) database readily available to educators and the general public in the form of a DVD based world atlas.

    View full record

  17. Title: New York Brooklyn quadrangle, 1900

    Contributors:

    Summary: This is a scanned version of the 1900 paper map entitled: New York Brooklyn quadrangle, published by the United States Geological Survey. The map was scanned at 300 dots per inch and is in the TIFF format.

    View full record

  18. Title: Detail Showing Principal Pleasure Grounds (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced of a plan titled "Detail Showing Principal Pleasure Grounds," This plan, created by Frederick Law Olmstead, originally appeared in "Preliminary Report in Regard to a Plan of Public Pleasure Grounds for the City of San Francisco," (Wm. C. Bryant & Co., New York, 1866). This project traces the history of urban planning in San Francisco, placing special emphasis on unrealized schemes. Rather than using visual material simply to illustrate outcomes, Imagined San Francisco uses historical plans, maps, architectural renderings, and photographs to show what might have been. By enabling users to layer a series of urban plans, the project presents the city not only as a sequence of material changes, but also as a contingent process and a battleground for political power. Savvy institutional actors--like banks, developers, and many public officials--understood that in some cases to clearly articulate their interests would be to invite challenges. That means that textual sources like newspapers and municipal reports are limited in what they can tell researchers about the shape of political power. Urban plans, however, often speak volumes about interests and dynamics upon which textual sources remain silent. Mortgage lenders, for example, apparently thought it unwise to state that they wished to see a poor neighborhood cleared, to be replaced with a freeway onramp. Yet visual analysis of planning proposals makes that interest plain. So in the process of showing how the city might have looked, Imagined San Francisco also shows how political power actually was negotiated and exercised. Olmstead, F. (2021). Detail Showing Principal Pleasure Grounds (Raster Image). Stanford University. Center for Spatial and Textual Analysis. Available at: http://purl.stanford.edu/nc805rf6310 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

    View full record

  19. Title: Franklin Park, Boston, Massachusetts, 1885 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: General plan of Franklin Park, [by] City of Boston, Park Dept. ; Fredk. Law Olmsted, landscape architect ; William Jackson, city engineer ; Wm. M. Coombs, del. It was published in 1885. Scale [ca. 1:2,700]. Shows park paths and drives, and park features and areas (fields, hills, gardens, grounds, woods, etc.) Relief is shown by spot heights. The map includes a descriptive text, an index map with key, and tables: distances from park, areas, and lengths of ways. 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 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.

    View full record

  20. Title: Glacial geology of Ashland County, Ohio

    Contributors:

    Summary: by George W. White. Includes bibliography. Ohio Docs no.: ONR 84.19:101.

    View full record

Need help?

Ask GIS