Publications
Below is a list of the most recent EROS peer-reviewed scientific papers, reports, fact sheets, and other publications. You can search all our publication holdings by type, topic, year, and order.
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Filter Total Items: 2456
Impacts of patch size and land-cover heterogeneity on thematic image classification accuracy
Landscape chamcteristics such as small patch size and landcover heterogeneity have been hypothesized to increase the likelihood of mis-classifying pixels during thematic image classification. However, there has been a lack of empirical evidence to support these hypotheses. This study utilizes data gathered as part of the accuracy assessment of the 1992 National Land Cover Data (NLCD) set to identi
Authors
Jonathan H. Smith, James D. Wickham, Stephen V. Stehman, Limin Yang
Using satellite data in map design and production
Satellite image maps have been produced by the U.S. Geological Survey (USGS) since shortly after the launch of the first Landsat satellite in 1972. Over the years, the use of image data to design and produce maps has developed from a manual and photographic process to one that incorporates geographic information systems, desktop publishing, and digital prepress techniques. At the same time, the co
Authors
John A. Hutchinson
The national elevation data set
The NED is a seamless raster dataset from the USGS that fulfills many of the concepts of framework geospatial data as envisioned for the NSDI, allowing users to focus on analysis rather than data preparation. It is regularly maintained and updated, and it provides basic elevation data for many GIS applications. The NED is one of several seamless datasets that the USGS is making available through t
Authors
Dean B. Gesch, Michael J. Oimoen, Susan K. Greenlee, Charles A. Nelson, Michael J. Steuck, Dean J. Tyler
Interferometric synthetic aperture radar studies of Alaska volcanoes
Interferometric synthetic aperture radar (InSAR) imaging is a recently developed geodetic technique capable of measuring ground-surface deformation with centimeter to subcentimeter vertical precision and spatial resolution of tens-of-meter over a relatively large region (/spl sim/10/sup 4/ km/sup 2/). The spatial distribution of surface deformation data, derived from InSAR images, enables the cons
Authors
Z. Lu, C. Wicks, J. Power, D. Dzurisin, W. Thatcher, Timothy Masterlark
Satellite mapping of surface biophysical parameters at the biome scale over the North American grasslands: A case study
Quantification of biophysical parameters is needed by terrestrial process modeling and other applications. A study testing the role of multispectral data for monitoring biophysical parameters was conducted over a network of grassland field sites in the Great Plains of North America. Grassland biophysical parameters [leaf area index (LAI), fraction of absorbed photosynthetically active radiation (f
Authors
B.K. Wylie, D. J. Meyer, L.L. Tieszen, S. Mannel
Operating the EOSDIS at the land processes DAAC managing expectations, requirements, and performance across agencies, missions, instruments, systems, and user communities
NASA developed the Earth Observing System (EOS) during the 1990'S. At the Land Processes Distributed Active Archive Center (LP DAAC), located at the USGS EROS Data Center, the EOS Data and Information System (EOSDIS) is required to support heritage missions as well as Landsat 7, Terra, and Aqua. The original system concept of the early 1990'S changed as each community had its say - first the manag
Authors
T. A. Kalvelage
Impact of sensor's point spread function on land cover characterization: Assessment and deconvolution
Measured and modeled point spread functions (PSF) of sensor systems indicate that a significant portion of the recorded signal of each pixel of a satellite image originates from outside the area represented by that pixel. This hinders the ability to derive surface information from satellite images on a per-pixel basis. In this study, the impact of the PSF of the Moderate Resolution Imaging Spectro
Authors
C. Huang, J.R.G. Townshend, S. Liang, S.N.V. Kalluri, R.S. DeFries
Derivation of a tasselled cap transformation based on Landsat 7 at-satellite reflectance
A new tasselled cap transformation based on Landsat 7 at-satellite reflectance was developed. This transformation is most appropriate for regional applications where atmospheric correction is not feasible. The brightness, greenness and wetness of the derived transformation collectively explained over 97% of the spectral variance of the individual scenes used in this study.
Authors
Chengquan Huang, Bruce K. Wylie, Limin Yang, Collin G. Homer, G. Zylstra
Magmatic activity beneath the quiescent Three Sisters volcanic center, central Oregon Cascade Range, USA
Images from satellite interferometric synthetic aperture radar (InSAR) reveal uplift of a broad ~10 km by 20 km area in the Three Sisters volcanic center of the central Oregon Cascade Range, ~130 km south of Mt. St. Helens. The last eruption in the volcanic center occurred ~1500 years ago. Multiple satellite images from 1992 through 2000 indicate that most if not all of ~100 mm of observed uplift
Authors
Charles W. Wicks, Daniel Dzurisin, Steven E. Ingebritsen, Wayne R. Thatcher, Zhong Lu, Justin Iverson
Deformation associated with the 1997 eruption of Okmok volcano, Alaska
Okmok volcano, located on Umnak Island in the Aleutian chain, Alaska, is the most eruptive caldera system in North America in historic time. Its most recent eruption occurred in 1997. Synthetic aperture radar interferometry shows deflation of the caldera center of up to 140 cm during this time, preceded and followed by inflation of smaller magnitude. The main part of the observed deformation can b
Authors
Dorte Mann, Jeffrey T. Freymueller, Z. Lu
Transient stress-coupling between the 1992 Landers and 1999 Hector Mine, California, earthquakes
A three-dimensional finite-element model (FEM) of the Mojave block region in southern California is constructed to investigate transient stress-coupling between the 1992 Landers and 1999 Hector Mine earthquakes. The FEM simulates a poroelastic upper-crust layer coupled to a viscoelastic lower-crust layer, which is decoupled from the upper mantle. FEM predictions of the transient mechanical behavio
Authors
Timothy Masterlark, H.F. Wang
An assessment of support vector machines for land cover classification
The support vector machine (SVM) is a group of theoretically superior machine learning algorithms. It was found competitive with the best available machine learning algorithms in classifying high-dimensional data sets. This paper gives an introduction to the theoretical development of the SVM and an experimental evaluation of its accuracy, stability and training speed in deriving land cover classi
Authors
C. Huang, L.S. Davis, J.R.G. Townshend