Publications
The CEGIS publications page is our one-stop collection of all publications from CEGIS authors, past and present.
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Filter Total Items: 167
Ontology patterns for complex topographic feature types Ontology patterns for complex topographic feature types
Complex feature types are defined as integrated relations between basic features for a shared meaning or concept. The shared semantic concept is difficult to define in commonly used geographic information systems (GIS) and remote sensing technologies. The role of spatial relations between complex feature parts was recognized in early GIS literature, but had limited representation in the...
Authors
Dalia E. Varanka
Remote sensing of soil moisture using airborne hyperspectral data Remote sensing of soil moisture using airborne hyperspectral data
Landscape assessment of soil moisture is critical to understanding the hydrological cycle at the regional scale and in broad-scale studies of biophysical processes affected by global climate changes in temperature and precipitation. Traditional efforts to measure soil moisture have been principally restricted to in situ measurements, so remote sensing techniques are often employed...
Authors
Michael P. Finn, Mark (David) Lewis, David D. Bosch, Mario Giraldo, Kristina H. Yamamoto, Dana G. Sullivan, Russell Kincaid, Ronaldo Luna, Gopala Krishna Allam, Craig Kvien, Michael S. Williams
Users as essential contributors to spatial cyberinfrastructures Users as essential contributors to spatial cyberinfrastructures
Current accounts of spatial cyberinfrastructure development tend to overemphasize technologies to the neglect of critical social and cultural issues on which adoption depends. Spatial cyberinfrastructures will have a higher chance of success if users of many types, including nonprofessionals, are made central to the development process. Recent studies in the history of infrastructures...
Authors
B.S. Poore
Topographic mapping data semantics through data conversion and enhancement Topographic mapping data semantics through data conversion and enhancement
This paper presents research on the semantics of topographic data for triples and ontologies to blend the capabilities of the Semantic Web and The National Map of the U.S. Geological Survey. Automated conversion of relational topographic data of several geographic sample areas to the triple data model standard resulted in relatively poor semantic associations. Further research employed
Authors
Dalia Varanka, Jonathan Carter, E. Lynn Usery, Thomas Shoberg
Performance of map symbol and label design with format and display resolution options through scale for the national map Performance of map symbol and label design with format and display resolution options through scale for the national map
Symbol and label design for U.S. topographic mapping using data from The National Map has been progressing, partly in support of research by Buttenfield and Stanislawski on hydrographic generalization, and is sponsored by CEGIS, the USGS Center of Excellence for Geospatial Information Science. The work also seeks to make the best use of GIS for map design that requires no hand-work to...
Authors
C. A. Brewer, C. L. Hanchett, B. P. Butterfield, E. Lynn Usery
Ontological Issues for national topographic mapping Ontological Issues for national topographic mapping
No abstract available.
Authors
Dalia E. Varanka, E. Lynn Usery
A 125 year history of topographic mapping and GIS in the U.S. Geological Survey 1884-2009, part 1: 1884-1980 A 125 year history of topographic mapping and GIS in the U.S. Geological Survey 1884-2009, part 1: 1884-1980
On December 4–5, 1884, John Wesley Powell persuaded the U.S. Congress to authorize the U.S. Geological Survey (USGS) to begin systematic topographic mapping of the United States.
Authors
E. Lynn Usery, Dalia Varanka, Michael P. Finn
Table Rock Lake Water-Clarity Assessment Using Landsat Thematic Mapper Satellite Data Table Rock Lake Water-Clarity Assessment Using Landsat Thematic Mapper Satellite Data
Water quality of Table Rock Lake in southwestern Missouri is assessed using Landsat Thematic Mapper satellite data. A pilot study uses multidate satellite image scenes in conjunction with physical measurements of secchi disk transparency collected by the Lakes of Missouri Volunteer Program to construct a regression model used to estimate water clarity. The natural log of secchi disk...
Authors
Gary Krizanich, Michael P. Finn
Ground and surface temperature variability for remote sensing of soil moisture in a heterogeneous landscape Ground and surface temperature variability for remote sensing of soil moisture in a heterogeneous landscape
At the Little River Watershed (LRW) heterogeneous landscape near Tifton Georgia US an in situ network of stations operated by the US Department of Agriculture-Agriculture Research Service-Southeast Watershed Research Lab (USDA-ARS-SEWRL) was established in 2003 for the long term study of climatic and soil biophysical processes. To develop an accurate interpolation of the in situ readings...
Authors
M.A. Giraldo, D. Bosch, M. Madden, L. Usery, M. Finn
A 125 year history of topographic mapping and GIS in the U.S. Geological Survey 1884-2009, part 2: 1980-2009 A 125 year history of topographic mapping and GIS in the U.S. Geological Survey 1884-2009, part 2: 1980-2009
The United States Geological Survey (USGS) entered the mainstream of developments in computer-assisted technology for mapping during the 1970s. The introduction by USGS of digital line graphs (DLGs), digital elevation models (DEMs), and land use data analysis (LUDA) nationwide land-cover data provided a base for the rapid expansion of the use of GIS in the 1980s. Whereas USGS had...
Authors
E. Lynn Usery, Dalia Varanka, Michael P. Finn