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This database for the Oregon, California, Mormon Pioneer, and Pony Express National Historic Trails is comprised of digital topographic data and reference line established using point data gathered with Global Positioning System (GPS) technology which represents only an approximation of the centerline of the trails system. This database, which is to be used in conjunction with ArcView software, is provided to assist the user in analyzing the visibility of any proposed location within 5 miles of the GPS reference line of the trails in order to evaluate effects to the landscape and setting of National Historic Trails in accordance with the National Historic Preservation Act and its implementing regulations at 36CFR...
Categories: Data; Types: Downloadable; Tags: biota, boundaries, environment, society, viewshed
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Viewshed calculated in ArcMap for the Pacific Crest Trail within the Tehachapi study area (and buffer) using a viewing radius of 50 km. This dataset indicates areas that can be seen by hikers on the PCT.
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This database for the Oregon, California, Mormon Pioneer, and Pony Express National Historic Trails is comprised of digital topographic data and reference line established using point data gathered with Global Positioning System (GPS) technology which represents only an approximation of the centerline of the trails system. This database, which is to be used in conjunction with ArcView software, is provided to assist the user in analyzing the visibility of any proposed location within 5 miles of the GPS reference line of the trails in order to evaluate effects to the landscape and setting of National Historic Trails in accordance with the National Historic Preservation Act and its implementing regulations at 36CFR...
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This database for the Oregon, California, Mormon Pioneer, and Pony Express National Historic Trails is comprised of digital topographic data and reference line established using point data gathered with Global Positioning System (GPS) technology which represents only an approximation of the centerline of the trails system. This database, which is to be used in conjunction with ArcView software, is provided to assist the user in analyzing the visibility of any proposed location within 5 miles of the GPS reference line of the trails in order to evaluate effects to the landscape and setting of National Historic Trails in accordance with the National Historic Preservation Act and its implementing regulations at 36CFR...
Categories: Data; Types: Downloadable; Tags: elevation, society, viewshed
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Studies utilizing Global Positioning System (GPS) telemetry rarely result in 100% fix success rates (FSR). Many assessments of wildlife resource use do not account for missing data, either assuming data loss is random or because a lack of practical treatment for systematic data loss. Several studies have explored how the environment, technological features, and animal behavior influence rates of missing data in GPS telemetry, but previous spatially explicit models developed to correct for sampling bias have been specified to small study areas, on a small range of data loss, or to be species-specific, limiting their general utility. Here we explore environmental effects on GPS fix acquisition rates across a wide...
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This dataset represents a visual resource management assessment for the Buffalo Field Office, Wyoming.
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This database for the Oregon, California, Mormon Pioneer, and Pony Express National Historic Trails is comprised of digital topographic data and reference line established using point data gathered with Global Positioning System (GPS) technology which represents only an approximation of the centerline of the trails system. This database, which is to be used in conjunction with ArcView software, is provided to assist the user in analyzing the visibility of any proposed location within 5 miles of the GPS reference line of the trails in order to evaluate effects to the landscape and setting of National Historic Trails in accordance with the National Historic Preservation Act and its implementing regulations at 36CFR...


    map background search result map search result map Visual Resource Management Zones for the BLM Buffalo Field Office, Wyoming Historic Trail Viewsheds for the BLM Casper Field Office, Wyoming at 1:24,000 Pacific Crest Trail Viewshed 50 km - Tehachapi study area Variable Terrestrial GPS Telemetry Detection Rates: Parts 1 - 7—Data Visual Resource Management Zones for the BLM Buffalo Field Office, Wyoming Historic Trail Viewsheds for the BLM Casper Field Office, Wyoming at 1:24,000 Pacific Crest Trail Viewshed 50 km - Tehachapi study area Variable Terrestrial GPS Telemetry Detection Rates: Parts 1 - 7—Data