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Newberry Volcano, one of the largest Quaternary volcanoes in the conterminous United States, is a broad shield-shaped volcano measuring 60 km north-south by 30 km east-west with a maximum elevation of more than 2 km above sea level. It is the product of deposits from thousands of eruptions, including at least 25 in (approximately) the last 12,000 years (the Holocene Epoch). Newberry Volcano has erupted as recently as 1,300 years ago, but isotopic ages indicate that the volcano began its growth as early as 0.6 million years ago. Such a long eruptive history together with recent activity suggests that Newberry Volcano is likely to erupt in the future. This DEM (digital elevation model) of Newberry Volcano contributes...
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Surveys of the bathymetry and backscatter intensity of the sea floor south of Long Island, New York, were carried out in November 1998 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to explore the bathymetry and backscatter intensity of the sea floor in several areas off the southern coast of Long Island along the 20-meter isobath. Survey areas offshore of Fire Island Inlet, Moriches Inlet, Shinnecock Inlet, and southwest of Montauk Point were about 1 kilometer (km) wide and 10 km long. The area was mapped by the U.S. Geological Survey with support from the Canadian Hydrographic Service and the University...
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Bathymetric, topographic, and grain-size data were collected in May 2009 along a 33-mi reach of the Colorado River in Grand Canyon National Park, Arizona. The study reach is located from river miles 29 to 62 at the confluence of the Colorado and Little Colorado Rivers. Channel bathymetry was mapped using multibeam and singlebeam echosounders, subaerial topography was mapped using ground-based total-stations, and bed-sediment grain-size data were collected using an underwater digital microscope system. These data were combined to produce digital elevation models, spatially variable estimates of digital elevation model uncertainty, georeferenced grain-size data, and bed-sediment distribution maps.
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Glacier Peak is a 3,214 m (10,544 ft.) stratovolcano composed mainly of dacite. The volcano is located in the Glacier Peak Wilderness Area, in the Mt. Baker-Snoqualmie National Forest, about 100 km (65 mi) northeast of Seattle and 110 km (70 mi) south of the International Boundary with Canada. Since the continental ice sheets receded from the region approximately 15,000 years ago, Glacier Peak has erupted repeatedly during at least six episodes. Two of these eruptions were among the largest in the Cascades during this time period. This DEM (digital elevation model) of Glacier Peak is the product of high-precision airborne lidar (Light Detection and Ranging) surveys performed during August-November, 2014 and June,...
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Explanation: Advances in various technologies have enabled increased accuracies, higher resolutions, and reduced costs for elevation data acquired using airborne IFSAR (Interferometric Synthetic Aperture RADAR) and LIDAR (Light Detection and Ranging) technologies. Associated IFSAR magnitude (RADAR DOQ) data also offers improved resolution, dynamic range, and reduced noise over earlier systems. The USGS acquired IFSAR coverage for the Colorado Front Range area in 1999, and is evaluating both IFSAR and LIDAR for its Data Revision program. In this poster the IFSAR DEM (phase difference of return pulses) for the entire study area has been displayed in graytone shaded relief. Procedures used: After paneling all...
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This dataset represents a shaded relief, or hillshade, for the Northern U.S. and Canada. This shaded relief raster was created from a 30 meter Digital Elevation Model (DEM) using the ArcMap geoprocessing tool "hillshade". The DEM consists of two mosaiced datasets: 1. U.S. Geological Survey's (USGS) 30 meter National Elevation Dataset (NED) , ~1 arc-second data that is updated over large areas by integrating the 10 meter or better source data(where available), re-sampled to 1 arc-second. 2. The Canadian Digital Elevation Data, Level 1 (CDED1) The Center of Topographic Information (CTI) jointly produces the CDED with federal, provincial, and territorial government agencies as well as the private sector. The CDED...
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The 90m DEM for Wyoming contains elevation in meters for each 90m cell making up the raster data. In order to conserve space, the DEM was converted from floating point data to integer values. This dataset was converted from US Geological Survey's 1-Degree digital elevation models for Wyoming consisting of a sampled array of elevations for ground positions; see the USGS National Mapping Program's Data User Guide for the DEMs for complete information about the DEM.
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The 90m DEM for Wyoming contains elevation in meters for each 90m cell making up the raster data. In order to conserve space, the DEM was converted from floating point data to integer values. This dataset was converted from US Geological Survey's 1-Degree digital elevation models for Wyoming consisting of a sampled array of elevations for ground positions; see the USGS National Mapping Program's Data User Guide for the DEMs for complete information about the DEM.
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The hillshade image was created from raster to grid datausing U.S. Geological Survey 30 meter resolution DigitalElevation Models, (DEM's).


    map background search result map search result map Digital Elevation Model for Wyoming 90 meter Digital Elevation Model for Wyoming 90 meter Hillshade of the San Gorgonio Pass area, Riverside County, California. Shaded Relief, Northeast U.S. and Canada (Draft poster)  Colorado Front Range:  IFSAR (Radar) Topography Bathymetry and Backscatter Intensity of the Sea Floor South of Long Island, New York High-resolution digital elevation dataset for Newberry Volcano and vicinity, Oregon, based on lidar survey of August-September, 2010 and bathymetric survey of June, 2001 High-resolution digital elevation dataset for Glacier Peak and vicinity, Washington, based on lidar surveys of August-November, 2014 and June, 2015 USGS 2017 MKaplinski Channel Mapping of the Colorado River in Grand Canyon National Park, Arizona, May 2009, river miles 29 to 62—Data High-resolution digital elevation dataset for Newberry Volcano and vicinity, Oregon, based on lidar survey of August-September, 2010 and bathymetric survey of June, 2001 High-resolution digital elevation dataset for Glacier Peak and vicinity, Washington, based on lidar surveys of August-November, 2014 and June, 2015 Hillshade of the San Gorgonio Pass area, Riverside County, California. Bathymetry and Backscatter Intensity of the Sea Floor South of Long Island, New York (Draft poster)  Colorado Front Range:  IFSAR (Radar) Topography Digital Elevation Model for Wyoming 90 meter Digital Elevation Model for Wyoming 90 meter Shaded Relief, Northeast U.S. and Canada