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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Watershed processes as amplifiers of climate change and the impact on the future of fine-sediment delivery in the Humboldt Bay-Eel River region, California Watershed processes as amplifiers of climate change and the impact on the future of fine-sediment delivery in the Humboldt Bay-Eel River region, California
No abstract available.
Authors
Jennifer A. Curtis
Geologic history, rocks, and deposits of the Wenatchee area, Washington Geologic history, rocks, and deposits of the Wenatchee area, Washington
No abstract available.
Authors
Ralph A. Haugerud, Kelsay M.D. Stanton
Cathodoluminescence response of barite at room and liquid nitrogen temperatures Cathodoluminescence response of barite at room and liquid nitrogen temperatures
Rare earth element (REE) enrichment in the Elk Creek carbonatite, Nebraska USA, is comparable to ore grade enrichment in carbonatite-hosted REE deposits[1]. Petrographic examination of textures documents a complex history of crystallization, brecciation, recrystallization, oxidation, and near surface alteration. Barite (BaSO4) is present in most units, including REE-enriched zones, such...
Authors
Heather A. Lowers, Colin MacRae, Nick Wilson, Philip L. Verplanck
Quantitative and qualitative correlation of CL and X-ray signals in Cr-bearing jade from Chichén-Itzá Archaeological Zone, Mexico Quantitative and qualitative correlation of CL and X-ray signals in Cr-bearing jade from Chichén-Itzá Archaeological Zone, Mexico
No abstract available.
Authors
E Vicenzi, Thomas Lam, Heather A. Lowers, Paul K. Carpenter, David T. Adams
Estratigrafía preliminar del flanco Este del volcán de Santa Ana Estratigrafía preliminar del flanco Este del volcán de Santa Ana
We present the eruption sequence for the east flank of Santa Ana volcano, which we divide into the sections above and below the Tierra Blanca Joven (TBJ) formation. The sequence below the TBJ suggests a series of mafic magmatic eruptions that began before 7,800 cal BP and continued until after 5,800 cal BP. These eruptions emplaced tephra-fall and pyroclastic-density-current deposits...
Authors
Dennis Lemus, Christopher Harpel, Angela V. Garcia, Demetrio Escobar, Alexander Hernandez, Estefany Alvarenga
Nuevos datos: Avalancha de escombros de Acajutla, volcán Santa Ana Nuevos datos: Avalancha de escombros de Acajutla, volcán Santa Ana
The Acajutla debris-avalanche deposit is dated to about 40,000 cal BP. The dating is based on two 14C dates on pieces of wood from the debris-avalanche deposit recovered from a core at the Santa Águeda School Center. The debris-avalanche deposit overlies a 1.2-m-thick paleosol and four ash layers. One of these ash layers is geochemically correlated to the Los Chocoyos ash from Atitlán...
Authors
Angela V. Garcia, Christopher Harpel, Walter Hernandez, Demetrio Escobar, Luis E. Mixco, Charles Lewis, Linda Scott Cummings
Towards continuous streamflow monitoring with time-lapse cameras and deep learning Towards continuous streamflow monitoring with time-lapse cameras and deep learning
Effective water resources management depends on monitoring the volume of water flowing through streams and rivers, but collecting continuous discharge measurements using traditional streamflow gauges is prohibitively expensive. Time-lapse cameras offer a lowcost option for streamflow monitoring, but training models for predicting streamflow directly from images requires streamflow data...
Authors
Amrita Gupta, Tony Chang, Jeffrey Walker, Benjamin Letcher
Sediment thickness and ground motion site amplification along the United States Atlantic and Gulf Coastal Plains Sediment thickness and ground motion site amplification along the United States Atlantic and Gulf Coastal Plains
Past and present research on earthquake ground motions along the Atlantic and Gulf Coastal Plains and Mississippi Embayment show significant period-dependent site response that is not presently accounted for in ground motion models. These deviations are strongly correlated with the thickness of Mesozoic and younger syn- and post-rift sediments. With the recent incorporation of deep basin...
Authors
Oliver S. Boyd, David Henry Churchwell, Morgan P. Moschetti, Eric M. Thompson, Thomas L. Pratt, Martin C. Chapman, Sanaz Rezaeian
Medium-fidelity CFD modeling of multicopter wakes for airborne sensor measurements Medium-fidelity CFD modeling of multicopter wakes for airborne sensor measurements
No abstract available.
Authors
Jonathan Chiew, Michael Aftosmis, Kristen L. Manies
Demonstration of a novel quantitative microscopy technique for automated characterization of in situ particulate matter in coal miners with progressive massive fibrosis Demonstration of a novel quantitative microscopy technique for automated characterization of in situ particulate matter in coal miners with progressive massive fibrosis
Rationale: Increasing exposure to respirable crystalline silica (RCS) linked to changes in mining production processes has been implicated in the resurgence of severe lung disease in U.S. coal miners. Lung mineralogy can provide insight into particle pathogenesis. However, standard approaches to characterizing in situ particulate matter (PM) by pulmonary pathologists have poor inter...
Authors
Jeremy T. Hua, Lauren M. Zell-Baran, L. H. Go, Carlyne D. Cool, Heather A. Lowers, K. S. Almberg, Emily A. Sarver, Susan M. Majka, Kathy D. Pang, R. A. Cohen, Cecil S. Rose
Migration of first-year steppe eagles (Aquila nipalensis) from northern Kazakhstan and implications for conservation Migration of first-year steppe eagles (Aquila nipalensis) from northern Kazakhstan and implications for conservation
Extensive anthropogenic alteration of steppe ecosystems throughout Eurasia leaves central Asia with some of the world’s last remaining large expanses of grassland habitat. Steppe eagles (Aquila nipalensis) are globally endangered breed primarily in these steppe ecosystems. We evaluated migratory movements of first year steppe eagles hatched in northern Kazakhstan, to understand their...
Authors
Todd E. Katzner, R. Efrat, A. E. Bragin, Y. Lehnardt, E. A. Bragin, N. Sapir
Preliminary petrographic and geochemical data for potential source rocks for sediment-hosted stratabound copper deposits in the Lake Superior portion of the Midcontinent Rift Preliminary petrographic and geochemical data for potential source rocks for sediment-hosted stratabound copper deposits in the Lake Superior portion of the Midcontinent Rift
No abstract available.
Authors
Timothy S. Hayes, Frank K. Mazdab