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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Removal of subglacially erupted volcanic edifices beneath the divide of the West Antarctic Ice Sheet interpreted from aeromagnetic and radar ice sounding surveys Removal of subglacially erupted volcanic edifices beneath the divide of the West Antarctic Ice Sheet interpreted from aeromagnetic and radar ice sounding surveys
No abstract available.
Authors
John C. Behrendt, D. D. Blankenship, D. L. Morse, Carol A. Finn, R. E. Bell
A 2000-year-long record of climate from the Gulf of California A 2000-year-long record of climate from the Gulf of California
No abstract available.
Authors
John A. Barron, David Bukry, James L. Bischoff
A strategy for mapping mid-scale existing vegetation in support of national fire fuel assessment A strategy for mapping mid-scale existing vegetation in support of national fire fuel assessment
Geospatial distribution of natural vegetation is among the very important environmental parameters required for applications ranging from global climate change to monitoring of natural hazards, monitoring of ecosystem vitality, and fire management practices. Increasingly sophisticated applications require vegetation datasets to cover large areas at a suitable scale and provide...
Authors
Chengquan Huang, James Vogelmann, Brian L. Tolk, James P. Menakis, Gretchen G. Moisen
Exploration of satellite-measured vegetation seasonality for Landfire land cover Exploration of satellite-measured vegetation seasonality for Landfire land cover
The purpose of this study is to explore the use of satellite data and other sources of spatial data for large area classification in the western United States to support research on potential fire hazards. Extensive field information was made available to this project from two sources: Forest Inventory and Assessment (FIA) and Utah State University. Seasonal spectral patterns of...
Authors
James Vogelmann, Chengquan Huang, Brian L. Tolk, Gretchen G. Moisen, Zhiliang Zhu
Deriving rangeland structural attributes using Landsat ETM+, ERS-1/ERS-2 Deriving rangeland structural attributes using Landsat ETM+, ERS-1/ERS-2
The purpose of this study is to determine if Synthetic Aperture Radar (SAR) can be used independently, or in conjunction with Landsat Enhanced Thematic Mapper Plus (ETM+) to improve the classification accuracy of structural attributes of rangeland vegetation, particularly percent shrub cover and top shrub canopy height. Such information, if mapped accurately, can be used in models to...
Authors
Brian L. Tolk, Chengquan Huang, Zhong Lu, Russell P. Rykhus, James Vogelmann
A comparison of spectral and spatial characteristics of Landsat 7 ETM+ with Terra ASTER imagery A comparison of spectral and spatial characteristics of Landsat 7 ETM+ with Terra ASTER imagery
No abstract available.
Authors
Paula F. Smit, Zheng Zhang, Bhaskar Ramachandran
Studies of Alaskan volcanoes using synthetic aperature radar and Landsat imagery Studies of Alaskan volcanoes using synthetic aperature radar and Landsat imagery
Approximately 10 percent of the world’s active volcanoes are located in the Alaskan Aleutian arc and produce about 3-4 explosive eruptions per year. Even with this high amount of volcanic activity, the remote locations and harsh environments of the Aleutian volcanoes conspire to keep them among some of the most poorly studied volcanoes in the world. Space-borne remote sensed imagery can...
Authors
Russell P. Rykhus, Zhong Lu
Delivering data for The National Map Delivering data for The National Map
The National Map aims at delivering current, nationwide views of regional and local data, synthesized into a single presentation. A key method of achieving this is the use of satellite data, aerial photographs, and derivative products to maintain up-to-date maps. The Earth Resources Observation Systems (EROS) Data Center (EDC) archives several large orthoimagery datasets, along with...
Authors
Chris Rusanowski
Predictive modeling of forest cover type and tree canopy height in the central Rocky Mountains of Utah Predictive modeling of forest cover type and tree canopy height in the central Rocky Mountains of Utah
Maps of forest cover type and canopy height are needed for LANDFIRE, a multi-scale fire risk assessment project designed to generate intermediate-resolution data of vegetation and fire fuel characteristics for the U.S. Here we describe an evaluation study in the central Rockies of Utah, comparing tree-based methods, multivariate adaptive regression splines (MARS), and a hybrid method for...
Authors
Gretchen G. Moisen, T.S. Frescino, Chengquan Huang, James Vogelmann, Zhiliang Zhu
Development of stochastic modeling systems using deterministic models and GIS: Principles and a case study in the Atlantic Zone of Costa Rica Development of stochastic modeling systems using deterministic models and GIS: Principles and a case study in the Atlantic Zone of Costa Rica
The most important requirements for large-area environmental modeling are a tight integration between models and data, and a close match of the spatial scale at which the model is developed with the scale at which the model is to be applied. To better match the scale of data with that of the model, we propose a set of principles for the development of stochastic modeling systems based on...
Authors
Shuguang Liu, William A. Reiners, Kenneth G. Gerow, David S Schimel, Michael Keller
Deriving annual integrated NDVI greenness at 30 m spatial resolution Deriving annual integrated NDVI greenness at 30 m spatial resolution
Temporal greenness matrics have been found useful for characterizing vegetation phenology, and have been used to discriminate vegetation cover types and to estimate key vegetation attributes including percent cover and green biomass. So far, however, such matrics have been calculated only from coarse resolution satellite data. Intermediate spatial resolution satellites like Landsat...
Authors
Chengquan Huang, Brian L. Tolk, James Vogelmann, Michelle L. Knuppe, Zhiliang Zhu