6,903 results returned
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Title: Contours (10m): Offshore of San Gregorio, California, 2007
Contributors:- Line data
- 2013
- Not owned by MIT (Owned by Stanford)
- Bretz, Carrie K.
- Kvitek, Rikk G.
- Cochrane, Guy R.
- Dartnell, Peter
- Johnson, Samuel Y.
- Golden, Nadine E.
- Fugro Pelagos, Inc
- Seafloor Mapping Lab
- Pacific Coastal and Marine Science Center
Summary: This line shapefile contains bathymetric contours at 10 meter intervals for the offshore area of San Gregorio, California. This layer was generated from bathymetry data collected by Fugro Pelagos and by California State University, Monterey Bay, Seafloor Mapping Lab (CSUMB). Mapping was completed in 2006 and 2007, using a combination of 400-kHz Reson 7125 and 244-kHz Reson 8101 multibeam echosounders. These mapping missions combined to collect bathymetry from about the 10-m isobath to beyond the 3-nautical-mile limit of California's State Waters. Bathymetric contours at 10-m intervals were generated from the merged 2-m bathymetric surface. The most continuous contour segments were preserved while smaller segments and isolated island polygons were excluded from the final output. Contours were smoothed via a polynomial approximation with exponential kernel (PAEK) algorithm using a tolerance value of 60 m. The contours were then clipped to the boundary of the map area. A map that shows these data is published in Scientific Investigations Map 3306, "California State Waters Map Series--Offshore of San Gregorio, California." This layer is part of USGS Data Series 781. In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP) to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats and geology within the 3-nautical-mile limit of California's State Waters. CSMP has divided coastal California into 110 map blocks, each to be published individually as United States Geological Survey Open-File Reports (OFRs) or Scientific Investigations Maps (SIMs) at a scale of 1:24,000. Maps display seafloor morphology and character, identify potential marine benthic habitats and illustrate both the seafloor geology and shallow (to about 100 m) subsurface geology. Data layers for bathymetry, bathymetric contours, acoustic backscatter, seafloor character, potential benthic habitat and offshore geology were created for each map block, as well as regional-scale data layers for sediment thickness, depth to transition, transgressive contours, isopachs, predicted distributions of benthic macro-invertebrates and visual observations of benthic habitat from video cruises over the entire state. Part of the marine habitat mapping data for the California North Central Coast Mapping Project (NCCMP), this coverage can be used to to aid in assessments and mitigation of geologic hazards in the coastal region and to provide sufficient geologic information for land-use and land-management decisions both onshore and offshore. These data are intended for science researchers, students, policy makers, and the general public. This information is not intended for navigational purposes.The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information. U.S. Geological Survey. (2013). Contours (10m): Offshore of San Gregorio, California, 2007. California State Waters Map Series Data Catalog: U.S. Geological Survey Data Series 781. Available at: http://purl.stanford.edu/fh627vx6058. MBES and side scan data for CC_Block01 to CC_Block11 are a combination of 400KHz Reson 7125 and 244 KHz Reson 8101 sonar data collected aboard the F/V Quicksilver by Fugro Pelagos, Inc. (FPI) and the R/V VenTresca by the Seafloor Mapping Lab (SFML). CC_Block00 (Stinson Beach) and the area surrounding the San Francisco Bay mouth were surveyed entirely by SFML using the Reson 8101 aboard the VenTresca. Prior to data collection, a series of planned survey lines were created using the survey navigation and planning softwareWinFrog (FPI) or Hypack Max GOLD from Hypack, Inc (SFML). An Applanix POS/MV system with TrueHeave processing was used to provide position and attitude data for each vessel during data collection and accounted for vessel motion such as heave, pitch, and roll (position accuracy ± 2m, pitch, roll and heading accuracy ±0.02°, heave accuracy ± 5% or 5cm). KGPS altitude data were used to account for tide cycle fluctuations and sound velocity profiles were collected with an Applied Microsystems SVPlus sound velocimeter. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: Contours (10m): Offshore of Half Moon Bay, California, 2007
Contributors:- Line data
- 2013
- Not owned by MIT (Owned by Stanford)
Summary: This line shapefile contains bathymetric contours at 10-meter intervals for the offshore area of Half Moon Bay, California. In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP) to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats and geology within the 3-nautical-mile limit of California's State Waters. CSMP has divided coastal California into 110 map blocks, each to be published individually as United States Geological Survey Open-File Reports (OFRs) or Scientific Investigations Maps (SIMs) at a scale of 1:24,000. Maps display seafloor morphology and character, identify potential marine benthic habitats and illustrate both the seafloor geology and shallow (to about 100 m) subsurface geology. Data layers for bathymetry, bathymetric contours, acoustic backscatter, seafloor character, potential benthic habitat and offshore geology were created for each map block, as well as regional-scale data layers for sediment thickness, depth to transition, transgressive contours, isopachs, predicted distributions of benthic macro-invertebrates and visual observations of benthic habitat from video cruises over the entire state. These data are intended for science researchers, students, policy makers, and the general public. This information is not intended for navigational purposes.The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information. The map that show these data are published in Open-File Report 2014–1214, "California State Waters Map Series--Offshore of Half Moon Bay, California." This layer is part of USGS Data Series 781. U.S. Geological Survey. (2013). Contours (10m): Offshore of Half Moon Bay, California, 2007. California State Waters Map Series Data Catalog: U.S. Geological Survey Data Series 781. Available at: http://purl.stanford.edu/qk466kv0273. MBES and side scan data for CC_Block01 to CC_Block11 are a combination of 400KHz Reson 7125 and 244 KHz Reson 8101 sonar data collected aboard the F/V Quicksilver by Fugro Pelagos, Inc. (FPI) and the R/V VenTresca by the Seafloor Mapping Lab (SFML). CC_Block00 (Stinson Beach) and the area surrounding the San Francisco Bay mouth were surveyed entirely by SFML using the Reson 8101 aboard the VenTresca. Prior to data collection, a series of planned survey lines were created using the survey navigation and planning softwareWinFrog (FPI) or Hypack Max GOLD from Hypack, Inc (SFML). An Applanix POS/MV system with TrueHeave processing was used to provide position and attitude data for each vessel during data collection and accounted for vessel motion such as heave, pitch, and roll (position accuracy ± 2m, pitch, roll and heading accuracy ±0.02°, heave accuracy ± 5% or 5cm). KGPS altitude data were used to account for tide cycle fluctuations and sound velocity profiles were collected with an Applied Microsystems SVPlus sound velocimeter. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: Canada (Major Cities, 2005)
Contributors:- Point data
- 2005
- MIT authentication required
Summary: Canada Major Cities represents the locations of the largest cities within Canada. The major cities are based on the Canadian Geographic Names Database from Natural Resources Canada.
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Title: Canada (Middle Cities, 2005)
Contributors:- Point data
- 2005
- MIT authentication required
Summary: Canada Middle Cities represents the locations of towns within Canada. The middle cities are based on the Canadian Geographic Names Database from Natural Resources Canada.
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Title: Canada (Municipalities, 2005)
Contributors:- Polygon data
- 2005
- MIT authentication required
Summary: Canada Municipalities represents the municipalities (townships) within Canada of types including cities, cantons, hamlets, towns/ville, villages, Indian reserves, parishes/paroisse, communities, unorganized, districts, and terre Inuite. The boundaries are digitized from CanMap®.
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Title: Canada (Provinces, 2005)
Contributors:- Polygon data
- 2005
- MIT authentication required
Summary: Canada Provinces represents the Canadian provinces and territories as well as coastlines, international boundaries, provincial boundaries, and demographics. The boundaries are digitized from CanMap®.
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Title: Canada (Regional Municipalities, 2005)
Contributors:- Polygon data
- 2005
- MIT authentication required
Summary: Canada Regional Municipalities represents the regional municipalities (counties) within Canada including regional districts and municipalities, counties, communauté, regions, and districts. The boundaries are digitized from CanMap®.
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Title: Canada (National Parks, 2005)
Contributors:- Polygon data
- 2005
- MIT authentication required
Summary: Canada National Parks represents the national parks and national park reserves within Canada. The national parks are based on the National Atlas Information Service (NAIS) 1:7.5 million digital maps created by Natural Resources Canada for publishing of the National Atlas of Canada.
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Title: Canada (Major Cities, 2006)
Contributors:- Point data
- 2006
- MIT authentication required
Summary: Canada Major Cities represent the locations of major cities within Canada. A major city is defined as:a populated place that has been designated as a provincial or federal capital by Statistics Canada, ora populated place that has been designated as a city by Natural Resources Canada and has a population greater than 100,000, ora populated place that has been designated as urban by Statistics Canada, a city by Natural Resources Canada, and has a population within the range of 10,000 – 99,999 people, ora populated place that has been designated as urban by Statistics Canada and a town by Natural Resources Canada.
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Title: Canada (Rural Cities, 2006)
Contributors:- Mixed
- 2006
- MIT authentication required
Summary: Canada Rural Cities represents the locations of rural cities within Canada. A rural city is a sparsely populated place outside of an urbanized area with less than 1,000 persons and a population density of less than 400 persons per square kilometer.
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Title: Canada (Urban Cities, 2006)
Contributors:- Mixed
- 2006
- MIT authentication required
Summary: Canada Urban Cities represents the locations of urban cities within Canada. An urban city lies outside of a Census Metropolitan Area or Census Area, has a minimum population concentration of 1,000 persons, and a population density of at least 400 persons per square kilometer.
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Title: Canada (Forward Sortation Area Postal Centroids, 2006)
Contributors:- Mixed
- 2006
- MIT authentication required
Summary: Canada FSA Postal Centroids represents the Forward Sortation Areas (FSA) of Canada as centroids, which are identified by the first three characters of the postal code. The sequence of the three-character FSA is always alphabetical character/number/alphabetical character. The centroids are calculated from the DMTI Spatial FSA boundary dataset, which is created from the DMTI Spatial six-character postal code point dataset and CanMap®. The FSA boundaries encompass the six-character postal code points starting with the FSA designation, and conform to the streets and other physical features within CanMap.
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Title: Canada (Highways, 2005)
Contributors:- Line data
- 2005
- MIT authentication required
Summary: Canada Highways represents the expressways and primary highways of Canada. The highways are from the National Atlas Information Service (NAIS) 1:2 million digital maps created by Natural Resources Canada for publishing of the National Atlas of Canada.
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Title: Canada (Forward Sortation Area Postal Centroids, 2005)
Contributors:- Point data
- 2005
- MIT authentication required
Summary: Canada FSA Postal Centroids represents the Forward Sortation Areas (FSA) of Canada as centroids, which are identified by the first three characters of the postal code. The sequence of the three-character FSA is always Alphabetical character/Number/Alphabetical character. The centroids are calculated from the DMTI Spatial FSA boundary file, which is created from the DMTI Spatial six-character postal code point file and CanMap®. The FSA boundaries encompass the six-character postal code points starting with that FSA designation, and conform to the streets and other physical features within CanMap.
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Title: Canada (Telephone Area Code Boundaries, 2005)
Contributors:- Polygon data
- 2005
- MIT authentication required
Summary: Canada Telephone Area Code Boundaries represents the telephone area codes for Canada. The area code boundaries are based on CanMap® municipalities.
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Title: Massachusetts, USA (Zipcodes+4, 2002)
Contributors:- Mixed
- 2002
- MIT authentication required
Summary: TIGER 2002 contains over 27,000,000 ZIP+4 points, each one being linked to a specific street segment. This file has only Massachusetts information but information is available for every state in the GIS Lab, Rotch Library. Call number for this CD is G3701 P8 2004 S7. The files on the ZIP+4 CD are compressed in a .zip format, by state.Each ZIP+4 point was placed on the correct side at the middle of each street segment. In the case of a street segment with multiple vertices, the ZIP+4 point was placed on the appropriate side of the middle segment or middle vertix. Each point has been offset 25 feet, perpendicular to the street segment.
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Title: Canada (Regional Municipalities, 1996)
Contributors:- Polygon data
- 2000
- MIT authentication required
Summary: Canada Regional Municipalities represents the regional municipalities (counties) within Canada including regional districts and municipalities, counties, communauté, regions, and districts. The boundaries are digitized from CanMap®.
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Title: Canada (Major Cities, 2000)
Contributors:- Point data
- 2000
- MIT authentication required
Summary: Canada Major Cities represents locations of the largest cities within Canada. The major cities are based on the Canadian Geographic Names Database from Natural Resources Canada.
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Title: Canada (Middle Cities, 2000)
Contributors:- Point data
- 2000
- MIT authentication required
Summary: Canada Middle Cities represents locations of the incorporated communities (cities, towns, and villages) within Canada. The middle cities are based on the Canadian Geographic Names Database from Natural Resources Canada.
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Title: Canada (Detailed Provinces, 1996)
Contributors:- Polygon data
- 2000
- MIT authentication required
Summary: Canada Provinces represents the Canadian provinces and territories as well as coastline, international boundaries, provincial boundaries, and demographics. The boundaries are digitized from CanMap(R).