Conference Papers
Science Quality and Integrity
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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Measuring the impacts of natural amenities and the US-Mexico Border, on housing values in the Santa Cruz Watershed, using spatially-weighted hedonic modeling
Assessing the sustainability of International policy or urban development requires consideration of the impacts of these decisions on Ecosystem Services, or the values that humans receive from the ecosystem, including market-land price, environmental, and human well-being values. Hedonic modeling helps to identify the market land price, considering the price is determined by multiple factors affec
Authors
Gladys Amaya, Laura M. Norman, George Frisvold
Mechanics of flow and sediment transport in delta distributary channels
Predicting the planform and dimensions of a channel downstream from a confluence of two smaller channels with known sediment and water supplies is a fundamental, well-studied problem in geomorphology and engineering. An analogous but less well understood problem is found
well downstream of such confluences, where large river channels split into two or more distributary channels on a river delta. I
Authors
Jonathan M. Nelson, Paul J. Kinzel, Duong Duc Toan, Yasuyuki Shimizu, Richard R. McDonald
Meeting CCS communication challenges head-on: Integrating communications, planning, risk assessment, and project management
The Midwest Geological Sequestration Consortium, Schlumberger Carbon Services, and Archer Daniels Midland has implemented a comprehensive communications plan at the Illinois Basin–Decatur Project (IBDP), a one million metric tonne Carbon Capture and Storage project in Decatur, IL, USA funded by the U.S. Department of Energy’s National Energy Technology Laboratory. The IBDP Communication Plan inclu
Authors
S. Greenberg, L. Gauvreau, K. Hnottavange-Telleen, R. Finley, S. Marsteller
Merging climate and multi-sensor time-series data in real-time drought monitoring across the U.S.A.
Droughts occur repeatedly in the United States resulting in billions of dollars of damage. Monitoring and reporting on drought conditions is a necessary function of government agencies at multiple levels. A team of Federal and university partners developed a drought decision- support tool with higher spatial resolution relative to traditional climate-based drought maps. The Vegetation Drought Resp
Authors
Jesslyn F. Brown, T. Miura, B. Wardlow, Yingxin Gu
Methodology for prediction of rip currents using a three-dimensional numerical, coupled, wave current model
Rip current currents constitute one of the most common hazards in the nearshore that threaten the lives of the unaware public that makes recreational use of the coastal zone. Society responds to this danger through a number of measures that include: (a) the deployment of trained lifeguards; (b) public education related to the hidden hazards of the nearshore; and (c) establishment of warning system
Authors
George Voulgaris, Nirnimesh Kumar, John C. Warner
Methods of InSAR atmosphere correction for volcano activity monitoring
When a Synthetic Aperture Radar (SAR) signal propagates through the atmosphere on its path to and from the sensor, it is inevitably affected by atmospheric effects. In particular, the applicability and accuracy of Interferometric SAR (InSAR) techniques for volcano monitoring is limited by atmospheric path delays. Therefore, atmospheric correction of interferograms is required to improve the perfor
Authors
W. Gong, F. Meyer, P.W. Webley, Z. Lu
Midcontinent microcosm: Geology of the Atkins lake - Marengo falls area (Field trip 2)
Archean and Proterozoic rocks exposed over about 16km2 between Atkins Lake and Coffee Lake in southeastern Bayfield County (Fig. 1) chronicle almost all of the major Precambrian geologic events in the history of the southern Superior Craton. The oldest rocks are part of a locally gneissic quartz monzonite complex, the Puritan Batholith, with an igneous Rb-Sr age of 2710+140 Ma (Sims et al., 1977).
Authors
Marcia Bjørnerud, William F. Cannon
Mineralogic sources of metals in leachates from the weathering of sedex, massive sulfide, and vein deposit mining wastes
Weathered mine waste consists of oxidized primary minerals and chemically unstable secondary phases that can be sources of readily soluble metals and acid rock drainage. Elevated concentrations of metals such as Cd, Cu, Fe, Mn, Ni, Pb, and Zn are observed in deionized water-based leachate solutions derived from complex sedex and Cu-Pb-Zn mine wastes. Leachate (USGS FLT) from the Elizabeth mine, a
Authors
S. F. Diehl, P. L. Hageman, R.R. Seal, N.M. Piatak, H. Lowers
Modeling the spatial-temporal dynamics of net primary production in Yangtze River Basin using IBIS model
The climate change has significantly affected the carbon cycling in Yangtze River Basin. To better understand the alternation pattern for the relationship between carbon cycling and climate change, the net primary production (NPP) were simulated in the study area from 1956 to 2006 by using the Integrated Biosphere Simulator (IBIS). The results showed that the average annual NPP per square meter wa
Authors
Z. Zhang, H. Jiang, J. Liu, Q. Zhu, X. Wei, Z. Jiang, G. Zhou, X. Zhang, J. Han
Molecular characterization and comparison of shale oils generated by different pyrolysis methods using FT-ICR mass spectrometry
Fourier transform ion cyclotron resonance mass spectrometry (FT ICR-MS) was applied in the analysis of shale oils generated using two different pyrolysis systems under laboratory conditions meant to simulate surface and in situ oil shale retorting. Significant variations were observed in the shale oils, particularly the degree of conjugation of the constituent molecules. Comparison of FT ICR-MS re
Authors
J.M. Jin, S. Kim, J.E. Birdwell
Monitoring and inversion on land subsidence over mining area with InSAR technique
The Wulanmulun town, located in Inner Mongolia, is one of the main mining areas of Shendong Company such as Shangwan coal mine and Bulianta coal mine, which has been suffering serious mine collapse with the underground mine withdrawal. We use ALOS/PALSAR data to extract land deformation under these regions, in which Small Baseline Subsets (SBAS) method was applied. Then we compared InSAR results w
Authors
Y. Wang, Q. Zhang, C. Zhao, Z. Lu, X. Ding
Multi-species attributes as the condition for adaptive sampling of rare species using two-stage sequential sampling with an auxiliary variable
Assessing populations of rare species is challenging because of the large effort required to locate patches of occupied habitat and achieve precise estimates of density and abundance. The presence of a rare species has been shown to be correlated with presence or abundance of more common species. Thus, ecological community richness or abundance can be used to inform sampling of rare species. Adapt
Authors
B. Panahbehagh, D. R. Smith, M.M. Salehi, D.J. Hornbach, D.J. Brown