Conference Papers
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Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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Combining lunar photogrammetric topographic data with Clementine LIDAR data Combining lunar photogrammetric topographic data with Clementine LIDAR data
During the Clementine Mission both oblique and vertical multispectral images were collected. The oblique and vertical images from a single spectral band collected during the same orbit form a stereo pair that can be used to derive the topography. These stereo pairs were used to derive the topography of an area surrounding the lunar South Pole (90°S - 64°S latitude) and North Pole (90°N -...
Authors
Mark R. Rosiek, Randolph L. Kirk, Elpitha Howington-Kraus
Landsat 7 on-orbit modulation transfer function estimation Landsat 7 on-orbit modulation transfer function estimation
The Landsat 7 spacecraft and its Enhanced Thematic Mapper Plus (ETM+) were launched on April 15, 1999. Pre-launch modeling of the ETM+ optical system predicted that modulation transfer function (MTF) performance would change on-orbit. A method was developed to monitor the along-scan MTF performance of the ETM+ sensor system using on-orbit data of the Lake Pontchartrain Causeway in...
Authors
James C. Storey
Optical designs for the Mars '03 rover cameras Optical designs for the Mars '03 rover cameras
In 2003, NASA is planning to send two robotic rover vehicles to explore the surface of Mars. The spacecraft will land on airbags in different, carefully chosen locations. The search for evidence indicating conditions favorable for past or present life will be a high priority. Each rover will carry a total of ten cameras of five various types. There will be a stereo pair of color...
Authors
Gregory Hallock Smith, E.C. Hagerott, Lawrence M. Scherr, Kenneth E. Herkenhoff, James F. Bell
Blending bathymetry with topography—The Tampa Bay demonstration project Blending bathymetry with topography—The Tampa Bay demonstration project
No abstract available.
Authors
Bruce Parker, Dennis Milbert, Robert Wilson, Jon Bailey, Dean B. Gesch
Watershed delineation using the National Elevation Dataset and semiautomated techniques Watershed delineation using the National Elevation Dataset and semiautomated techniques
Federal, State, and local agencies have realized that currently available hydrologic units are not of sufficient scale for many applications. An interagency effort is under way to subdivide hydrologic units into smaller units called watersheds and subwatersheds. The National Elevation Dataset contains the best available elevation data merged into a seamless database for the entire United...
Authors
Jay R. Kost, Glenn G. Kelly
Development of a regional clearinghouse for the dissemination of integrated information on natural hazards in Central America Development of a regional clearinghouse for the dissemination of integrated information on natural hazards in Central America
No abstract available.
Authors
Eric van Praag, Larry L. Tieszen, Diego Pedreros
Development of a national seamless database of topography and hydrologic derivatives Development of a national seamless database of topography and hydrologic derivatives
The recent completion of the National Elevation Dataset (NED) and the National Hydrography Dataset (NHD) has provided an avenue for nationwide development of topographically derived hydrologic data layers at a scale of 1:24,000. This multilayer dataset of hydrologic derivatives, entitled the Elevation Derivatives for National Applications (EDNA), is being developed by a consortium of...
Authors
Sandra K. Franken, Dean J. Tyler, Kristine L. Verdin
Decision tree classification of multidate AVIRIS data for mapping woodland encroachment into the Great Plains Decision tree classification of multidate AVIRIS data for mapping woodland encroachment into the Great Plains
No abstract available.
Authors
David Meyer, Bruce Wylie, Cullen Robbins, Lee Vierling, Patrick Kozak
Microbially mediated alteration of iron mineral phases in contaminated sedimentary aquifers Microbially mediated alteration of iron mineral phases in contaminated sedimentary aquifers
No abstract available.
Authors
J.S. Herman, A.L. Mills, Isabelle M. Cozzarelli
CISNet San Pablo Bay network of environmental stress indicators: the CISNet hydrodynamic database CISNet San Pablo Bay network of environmental stress indicators: the CISNet hydrodynamic database
No abstract available.
Authors
M.F. Barad, S.G. Schladow, J.C. Warner, D. H. Schoellhamer
Floods & droughts: a Sierra Nevada perspective Floods & droughts: a Sierra Nevada perspective
No abstract avaiable
Authors
M. D. Dettinger