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Spaceborne hyperspectral EO-1 hyperion data pre-processing: Methods, approaches, and algorithms
No abstract available.
Urgent processing and control of lunar data
There is an urgent, time-critical need to begin tying together (geodetically controlling) all past and current lunar data, and to establish the cartographic foundation needed to make maximum use of future planned lunar data. Proper control of lunar datails required to properly support both lunar science and exploration, and at present we know of no plans within NASA to fund such work adequately. The utility of past and future lunar data will be severely hampered if they cannot be correlated/compared with each other or if the uncertainties in the positional accuracies are not well characterized. Since “required capabilities” and “technology developments” are on the primary list of issues for this workshop [1], it is clear that this issue is not only appropriate but critical to discuss and that strong recommendations must be made to address this problem. This white paper summarizes more detailed discussions that we have presented earlier [2].
Origins and philosophy of building a temporal database to examine human transformation processes
The U.S. Geological Survey (USGS), in partnership with the University of Maryland Baltimore County, is using historical maps and satellite images to map human-induced land transformations for the Baltimore-Washington metropolitan area. This work builds on an earlier effort that documented the historical urban development for the San Francisco Bay area. That effort used a geographic information system to compile a database that provided a visual and historical perspective of the urban growth experienced in the Bay area between 1850 and 1990. Historical overviews of urban development can be used to provide insights into the future. The Bay area work was inspired by the desire to draw upon the USGS's rich 100-year topographic map, and 20-year Landsat satellite data archives. A methodology was developed to combine the information from a variety of sources into an integrated, multi-scale, and multi-resolution dataset. Temporal urban mapping is used to examine past landscapes by incorporating historic maps, census statistics, and commerce records to generate a progressive geo-referenced representation of the past changes in the region. Contemporary analysis focuses on the use of remotely sensed data, existing digital land use data, digital census information, and a variety of Earth science infrastructure data, such as Digital Line Graphs, Digital Elevation Models, and key ancillary demographic information. The resulting database of temporal urban demographic changes provides an ideal source of test data and information for both urban geographers and global change research scientists.
Coastal barrier resources system mapping process
The Coastal Barrier Resources Act of 1982 (P.L. 97-348) established the Coastal Barrier Resources System (system), a 452,834 acre system of undeveloped, unprotected coastal barriers along 666 shoreline miles of the Atlantic Ocean and Gulf of Mexico coasts. Within the 186 unites of the Coastal Barrier Resources System, most Federal expenditures that encourage development are prohibited. Section 10 of the act directed the Department of the Interior (DOI) to conduct a study and prepare a report to Congress on the Coastal Barrier Resources System. The report, delivered to Congress in December 1988, recommended additions to, or deletions from, the Coastal Barrier Resources System, and listed modifications to the boundaries of system units. The DOI's recommendations, if passed by Congress, would add about 790,884 acres and 423 miles of shoreline to the Coastal Barrier Resources System. The coastal barriers included in the Coastal Barrier Resources System by Congress in 1982 were designated based on definitions and delineation criteria development by the DOI in 1981-82. The criteria used by the DOI to delineate barriers included in the 1988 recommendations to Congress differed from those used in 1981 in several respects, reflecting advances in the scientific understanding of coastal barriers, and the functional requirements of a good definition. I outline the mapping criteria used in 1981-82 and in 1984-87 during the Section 10 study. I also discuss some of the problems encountered in consistently identifying and delineating features across a heterogeneous national coastline, and I comment on future reinventories of coastal barriers.
Developing a decision-support process for landscape conservation design
Planning for sustainable landscapes is hampered by uncertainty in how species will respond to conservation actions amidst impacts from landscape and climate change. Planning decisions, including tradeoffs among competing species objectives, are complex. We developed a decision-support framework that integrates dynamic-landscape metapopulation models (DLMPs) and structured decision making (SDM) to help guide landscape conservation design. With this framework, we demonstrated that planning for viable populations across broad scales can be achieved under global change. Furthermore, the integration of DLMPs with SDM enabled decisions to be more objective and transparent, and thus, more defensible.
Use of processed geophysical data to improve the delineation of infilled scour holes at bridge piers
No abstract available.
Book review, Uranium resource processing and secondary resources
No abstract available.
Pattern and process in arid-region salt marshes - Southern California
No abstract available.
Selected environmental decisionmaking processes related to developments in the Gulf of Mexico region
No abstract available.
The integration of gis and image processing technology for monitoring wetland restoration projects
No abstract available.
Using gis and image processing technology to assist wetland planning, protection, and restoration in coastal Louisiana
No abstract available.
Thermal stratification of dilute lakes - evaluation of regulatory processes and biological effects before and after base addition: effects on brook trout habitat and growth
Addresses the significance of changes in summer thermal stratification patterns of Adirondack lakes affected by acidification to cold-water fish populations inhabiting these sensitive lakes . Brook trout Salvelinus fontinalis is the primary cold-water fish species indigenous to acid-sensitive lakes in the Adirondack region of N New York State; the ability of these lakes to sustain this important sport species is highly dependent on the availability of adequate summer habitat, consisting of cool, well-oxygenated water. Brook trout populations presently most susceptible to negative effects from acidification-induced increases in transparency and consequent reductions in preferred thermal habitat occur primarily in shallow, low-color lakes that are marginally acidified and either weakly stratified or strongly stratified with anoxic hypolimnia. Significant improvements in brook trout thermal habitat could be achieved in these lakes by reducing acidity levels, eg by liming.