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Showing 1 to 20 of 43 for “"Topographic Maps"”.
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Analysis of technological change and relief representation in U.S.G.S. topographic maps
… the nation using a series of several thousand topographic quadrangles. Since that date, the program and the maps themselves have undergone many changes due mainly to technological advances in mapping methods. The use of data collected from historic U.S.G.S. topographic maps in modem day …
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Applications of Interactive Topographic Maps: Tangibility with Improved Spatial Awareness and Readability
Traditional flat topographic maps are difficult to understand due to the distortion and compromise of the 3-dimensional (3D) spatial representation when it is folded into lower-dimension media (e.g. 2D). During the process, the x-y coordinate of a location can be captured but its physical elevation …
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Intelligent mapping : a competing values explanatory case study to optimize mapping operations for the National Geospatial-Intelligence Agency (NGA).
… Defense (DoD) operates with old and inaccurate topographic maps over many parts of the world. The DoD inventory of topographic maps contains outdated maps that require updating or lack any coverage for immediate usage during operations in theater. Inadequate mapping supplies limit mission …
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Intelligent mapping : a competing values explanatory case study to optimize mapping operations for the National Geospatial-Intelligence Agency (NGA).
… Defense (DoD) operates with old and inaccurate topographic maps over many parts of the world. The DoD inventory of topographic maps contains outdated maps that require updating or lack any coverage for immediate usage during operations in theater. Inadequate mapping supplies limit mission …
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Single digital-photo correction for a GIS application and error analysis
… test data from digital photos and USGS 1:24,000 topographic maps and by USGS 7.5-minute DEMs of two study areas, Prentiss, North Carolina and Blacksburg, Virginia. The collinearity equations were used to remove geometric errors caused by image tilt and relief, displacement. In addition to the …
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Identification, Characterization and Analysis of Wrench Related Faulting in Southwestern Warren County, Kentucky
… discerned from Radar imaging, aeromagnetic, and topographic maps of the region. An anomalous concentration of sinkholes is also visible from topographic maps and is aligned parallel to the curvature of the wrench structure on its western, southern, and eastern flanks.</p> <p>Wrench faults and …
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Positional accuracy in a natural resource database: comparison of a single-photo resection versus affine registration
… States Geological Survey (USGS) 1:24,000 scale topographic maps. Positional accuracy was determined as the Euclidian distance between the digitized coordinate and the reference ground coordinate collected with global positioning systems (GPS). Area accuracy was the acreage difference between the …
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Evaluating Satellite Image Classification For Bottomland Surveys in Ozark National Scenic Riverways
… regions were drawn using the aerial photographs, topographic maps and on-site experience. The satellite images were computer-classified into landcover classes. The satellite-image classification was compared with the aerial-photograph landcover regions. Statistical analysis shows the classified …
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An automated method for locating sinkholes in Montgomery County, Virginia, using digital elevation models
… has been investigated. Three quadrangle maps, those of Blacksburg, Ironto and Newport, were selected as these areas are dotted with sinkholes. An algorithm was developed to extract sinkholes from DEM's. Sinkholes were also digitized from the topographic maps to check the accuracy of those …
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The role of EphrinA for the retinotopic map formation in mouse visual cortex
… feature of many sensory areas is their precise topographic organisation: in the same way as the “homunculus” in the somatosensory cortex represents the entire body surface, in the visual system retinal inputs are mapped topographically; i.e. spatial relationships in the visual field are …
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Percepção de risco em áreas de inundação na cidade de Santa Rita, Paraíba.
… problems of the area, in addition to the use of topographic maps. Through bibliographical study we perceive as risk areas become vulnerable by human action as a consequence of incorrect managements of natural resources, transforming the spaces and providing thus occurrence of natural hazards.
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Caracterização morfológica e morfotectônica do gráben do Rio Mamanguape e adjacências, borda oriental do estado da paraíba.
This work is based on three topographic maps in the scale 1:25.000, of an area located in the eastern part of Paraíba state, in north eastern Brazil. The interpretation of the geomorphological parameters aiming in was made with digitalized maps of the whale graben and its adjacencies Mamanguape …
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Seismic investigation of the Matador Arch and Central Basin Platform
… intrusions in the upper crust. Gravity anomaly maps, known basement rock location and composition from well data, and gravity models are compared to topographic maps of the Moho and midcrustal discontinuity. Seismic signature in the lower crust and depth to the Moho suggest a rift pillow …
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The surface morphology of a small drainage basin in the North Dakota Badlands
… linear and areal properties are determined from maps showing the drainage basin 's surface geometry, the relief properties are determined from large-scale topographic maps of the area, and the surface elements are determined by direct field measurements of the ground slopes, surface materials, …
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An Evaluation of Student Use of Visualization Technology as an Addition to the Landscape Architecture Curriculum
… visualization exercise in which they experienced topographic maps presented in an animated digital medium. Some students observed the maps displayed on a computer monitor, or projected on a traditional movie-screen, while other students were involved in a virtual reality presentation through the …
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Knickpoint analysis of streams in North Dakota, South Dakota, and Nebraska
… if this uplift could be detected by constructing topographic profiles along, and in close proximity to several streams in this region. The Cannonball River, ND, was used to compare the streams in South Dakota and Nebraska to a stream beyond the affected area.</p> <p>Data for the profiles were …
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The Effect of Structure and Lithology on Aspect Ratio of Fluvial Channels: A Field-Based Quantitative Study of the New River in Three Geologic Provinces
… channel widening with increasing drainage area. Topographic maps show that channel width of the New River has a significant variation that far outscores an overall widening downstream. Aspect ratios for the New River are also large, approaching 500. We collected a field data set of 29 sites of …
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Assessing the impacts of riparian land use on gully development and sediment load : a case study of Nzhelele River Valley, Limpopo Province, South Africa
… and experiments. Satellite digital images, topographic maps, aerial photographs and the sediment load static model also assisted in determining how land use affects gully development and sediment load. For data analysis, the researcher used the following methods: Analysis of Variance …
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O crescimento urbano de Rio Claro e suas implicações nos riscos à inundação: cenários de 1970 a 2015
… photographs and multitemporal orthophotos, topographic maps and in records of the city flood events provided by the Civil Defense, as well old news archive. With the support of geotechnology as remote sensing and Geographic Information Systems (GIS), it was possible to carry out this study …
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