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Articles 91 - 120 of 791
Full-Text Articles in Physical Sciences and Mathematics
Natural Resource Condition Assessment, Scotts Bluff National Monument, Reilly R. Dibner, Nicole Korfanta, Gary Beauvais, Jonathan Bowler, Kit Freedman, Kelli C. Trujillo, Victoria H. Zero
Natural Resource Condition Assessment, Scotts Bluff National Monument, Reilly R. Dibner, Nicole Korfanta, Gary Beauvais, Jonathan Bowler, Kit Freedman, Kelli C. Trujillo, Victoria H. Zero
United States National Park Service: Publications
Executive Summary
In collaboration with the National Park Service, the University of Wyoming Ruckelshaus Institute of Environment and Natural Resources and the Wyoming Natural Diversity Database completed the Natural Resource Condition Assessment (NRCA) for Scotts Bluff National Monument (NM). The purpose of the NRCA is to provide park leaders and resource managers with information on resource conditions to support near-term planning and management, long-term strategic planning, and effective science communication to decision-makers and the public.
Scotts Bluff NM was established in 1919. The purposes of the park include protecting and preserving the Mitchell Pass portion of the Oregon Trail and …
Shear Wave Tomography Beneath The United States Using A Joint Inversion Of Surface And Body Waves, E. M. Golos, H. Fang, H. Yao, H. Zhang, Scott Burdick, F. Vernon, A. Schaeffer, S. Lebedev, R. D. Van Der Hilst
Shear Wave Tomography Beneath The United States Using A Joint Inversion Of Surface And Body Waves, E. M. Golos, H. Fang, H. Yao, H. Zhang, Scott Burdick, F. Vernon, A. Schaeffer, S. Lebedev, R. D. Van Der Hilst
Environmental Science and Geology Faculty Research Publications
Resolving both crustal and shallow-mantle heterogeneity, which is needed to study processes in and fluxes between crust and mantle, is still a challenge for seismic tomography. Body wave data can constrain deep features but often produce vertical smearing in the crust and upper mantle; in contrast, surface wave data can provide good vertical resolution of lithospheric structure but may lack lateral resolution and are less sensitive to the deeper Earth. These two data types are usually treated and inverted separately, and tomographic models therefore do not, in general, benefit from the complementary nature of sampling by body and surface waves. …
Weather And Climate Summary And Forecast: June 2018 Report, Gregory V. Jones
Weather And Climate Summary And Forecast: June 2018 Report, Gregory V. Jones
Linfield University Wine Studies Reports
This report provides a summary of the weather and climate forecast for June 2018. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.
Overpumping Leads To California Groundwater Arsenic Threat, Ryan G. Smith, Rosemary Knight, Scott Fendorf
Overpumping Leads To California Groundwater Arsenic Threat, Ryan G. Smith, Rosemary Knight, Scott Fendorf
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Water resources are being challenged to meet domestic, agricultural, and industrial needs. To complement finite surface water supplies that are being stressed by changes in precipitation and increased demand, groundwater is increasingly being used. Sustaining groundwater use requires considering both water quantity and quality. A unique challenge for groundwater use, as compared with surface water, is the presence of naturally occurring contaminants within aquifer sediments, which can enter the water supply. Here we find that recent groundwater pumping, observed through land subsidence, results in an increase in aquifer arsenic concentrations in the San Joaquin Valley of California. By comparison, historic …
Animal Agriculture And American Health: The Search For Sustainable Protein, Britta Brinkmann
Animal Agriculture And American Health: The Search For Sustainable Protein, Britta Brinkmann
Biology: Student Scholarship & Creative Works
This study examines the impact large-scale animal agriculture has on the environment. It links the environment and health. The goal is to find protein sources that are sustainable and nutritious in order to replace typical meat and dairy products. A study is proposed to measure the impact of the typical American diet, a vegan diet, an insect-supplemented diet and a diet heavy in seafood.
Weather And Climate Summary And Forecast: May 2018 Report, Gregory V. Jones
Weather And Climate Summary And Forecast: May 2018 Report, Gregory V. Jones
Linfield University Wine Studies Reports
This report provides a summary of the weather and climate forecast for May 2018. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.
Winter Bat Activity In A Landscape Without Traditional Hibernacula, Amy M. Hammesfahr, Rene E. Ohms
Winter Bat Activity In A Landscape Without Traditional Hibernacula, Amy M. Hammesfahr, Rene E. Ohms
United States National Park Service: Publications
Abstract
Prior to 2014, bat research at Devils Tower National Monument (DETO) focused on bats present during the summer months. Biologists at DETO assumed local bats were strictly summer residents due to the presumed lack of typical habitat features associated with bat hibernation, such as caves and mines. This lack of traditional hibernacula features at DETO discouraged staff and research cooperators from studying winter bat populations. Despite the earlier assumption that bats were unlikely to hibernate on the monument, DETO documented significant winter bat activity through passive winter acoustic monitoring. This study is the first study at DETO that documents …
Plant Community Composition And Structure Monitoring At Agate Fossil Beds National Monument, 2017 Data Summary Report, Stephanie L. Rockwood
Plant Community Composition And Structure Monitoring At Agate Fossil Beds National Monument, 2017 Data Summary Report, Stephanie L. Rockwood
United States National Park Service: Publications
Abstract
This report presents the results of vegetation monitoring efforts in 2017 at Agate Fossil Beds National Monument (AGFO) by the Northern Great Plains Inventory and Monitoring Network (NGPN) and the Northern Great Plains Fire Effects Program (NGPFire). This was the seventh year of field work conducted by NGPN at AGFO.
In 2017, crew members from NGPN visited six long-term plant community monitoring (PCM) plots and NGPFire visited eight additional PCM and fire plant community monitoring (FPCM) plots to collect data on the plant communities at AGFO. This collaborative effort is part of a long-term monitoring program established to better …
Weather And Climate Summary And Forecast: April 2018 Report, Gregory V. Jones
Weather And Climate Summary And Forecast: April 2018 Report, Gregory V. Jones
Linfield University Wine Studies Reports
This report provides a summary of the weather and climate forecast for April 2018. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.
Weather And Climate Summary And Forecast: March 2018 Report, Gregory V. Jones
Weather And Climate Summary And Forecast: March 2018 Report, Gregory V. Jones
Linfield University Wine Studies Reports
This report provides a summary of the weather and climate forecast for March 2018. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.
Economic Contributions Of Winter Sports In A Changing Climate, Hagenstad Consulting, Inc., Elizabeth Burakowski, Rebecca Hill
Economic Contributions Of Winter Sports In A Changing Climate, Hagenstad Consulting, Inc., Elizabeth Burakowski, Rebecca Hill
Earth Systems Research Center
In mountain towns across the United States that rely on winter tourism, snow is
currency. For snow lovers and the winter sports industry, predictions of a future with
warmer winters, reduced snowfall, and shorter snow seasons is inspiring them to
innovate, increase their own efforts to address emissions, and speak publicly on the
urgent need for action.
This report examines the economic contribution of winter snow sports tourism to
U.S. national and state-level economies. In a 2012 analysis, Protect Our Winters and
the Natural Resources Defense Council found that the winter sports tourism industry
generates $12.2 billion and 23 million …
Weather And Climate Summary And Forecast: February 2018 Report, Gregory V. Jones
Weather And Climate Summary And Forecast: February 2018 Report, Gregory V. Jones
Linfield University Wine Studies Reports
This report provides a summary of the weather and climate forecast for February 2018. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.
Acoustic Surveys Of Bats At Northern Great Plains Parks And Preliminary Results From 2014-16, Daniel S. Licht
Acoustic Surveys Of Bats At Northern Great Plains Parks And Preliminary Results From 2014-16, Daniel S. Licht
United States National Park Service: Publications
Executive Summary
From 2014-16, the Northern Great Plains Inventory & Monitoring Network (Network)—in collaboration with the Midwest Regional Biologist—used acoustic methods to monitor bat populations at 12 Network parks. Six parks were monitored using the nascent North American Bat Monitoring Program (NABat) framework. Six other parks did not meet a priori criteria for inclusion in NABat so they were monitored using similar methods, but a non-systematic sampling frame.
Fifty-five NABat stations were established along with 62 non-NABat stations. Stations were typically monitored for 4-7 nights each year using equipment that records the echolocation calls of bats. Fourteen mobile survey routes …
Plant Community Composition And Structure Monitoring For Scotts Bluff National Monument, 2017 Data Report, Ryan Manuel
Plant Community Composition And Structure Monitoring For Scotts Bluff National Monument, 2017 Data Report, Ryan Manuel
United States National Park Service: Publications
Abstract
This report presents the results of vegetation monitoring efforts in 2017 at Scotts Bluff National Monument (SCBL) by the Northern Great Plains Inventory and Monitoring Network (NGPN) and Northern Great Plains Fire Ecology Program (NGPFire).
During the seventh full year of field work, crew members from NGPN visited eight long-term monitoring plots on May 22-25, 2017 to collect data on the plant communities at SCBL. This is part of a long-term monitoring effort to better understand the condition of the vegetation at SCBL. NGPN staff captured data relating to species richness, herb-layer height, abundance of individual native and non-native …
Anthropocene Sea Level Change: A History Of Recent Trends Observed In The U.S. East, Gulf, And West Coast Regions, John D. Boon, Molly Mitchell, Jon Derek Loftis, David L. Malmquist
Anthropocene Sea Level Change: A History Of Recent Trends Observed In The U.S. East, Gulf, And West Coast Regions, John D. Boon, Molly Mitchell, Jon Derek Loftis, David L. Malmquist
Reports
Relative sea level (RSL) observations since 1969 at U.S. tide stations exhibit trends in RSL rise rate and acceleration that vary in response to both global and regional processes. Trend histories display a high degree of similarity between locations in coastal regions that are experiencing similar processes. With the exception of the U.S. Northeast Coast and Alaska,every other coastal location in the continental U.S. has experienced an upturn in RSL rise rate since 2013-2014 despite wide differences in the magnitude and trending direction of RSL acceleration. High RSL acceleration along the U.S. Northeast Coast has trended downward since 2011 while …
Cybersecurity In The Classroom: Bridging The Gap Between Computer Access And Online Safety, Andrew Malecki
Cybersecurity In The Classroom: Bridging The Gap Between Computer Access And Online Safety, Andrew Malecki
Cyber Security Capstone Research Project Reports
According to ISACA, there will be a global shortage of 2 million cybersecurity professionals worldwide by 2019. Additionally, according to Experian Data Breach Resolution, as much as 80% of all network breaches can be traced to employee negligence. These problems will not solve themselves, and they likewise won’t improve without drastic action. An effort needs to be made to help direct interested and qualified individuals to the field of cybersecurity to move toward closing this gap. Moreover, steps need to be made to better inform the public of general safety measures while online, including the safeguarding of sensitive information.
A …
Weather And Climate Summary And Forecast: January 2018 Report, Gregory V. Jones
Weather And Climate Summary And Forecast: January 2018 Report, Gregory V. Jones
Linfield University Wine Studies Reports
This report provides a summary of the weather and climate forecast for January 2018. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.
Evaluating Long-Term Trends In Vegetation And Management Intensity, Tallgrass Prairie National Preserve 1995–2014, Sherry A. Leis, Lloyd W. Morrison
Evaluating Long-Term Trends In Vegetation And Management Intensity, Tallgrass Prairie National Preserve 1995–2014, Sherry A. Leis, Lloyd W. Morrison
United States National Park Service: Publications
Abstract
Inventory and Monitoring Networks of the National Park Service are charged with collecting and reporting data related to the status and trends of key natural resources. We have analyzed a suite of grazing data from 1995- 2016, fire history data from 1998-2015, and vegetation community data from 2002-2014 to better understand trends as they relate to management strategies at the preserve over time. We found that cattle stocking rates declined and fires became less frequent over the latter half of the record. Similarly, bare ground declined, woody species increased slightly, and the floristic quality index was relatively stable with …
Provenance Analysis Of The Ochoco Basin, Central Oregon: A Window Into The Late Cretaceous Paleogeography Of The Northern U.S. Cordillera, Kathleen D. Surpless, Kirk D. H Gulliver
Provenance Analysis Of The Ochoco Basin, Central Oregon: A Window Into The Late Cretaceous Paleogeography Of The Northern U.S. Cordillera, Kathleen D. Surpless, Kirk D. H Gulliver
Geosciences Faculty Research
Cretaceous forearc strata of the Ochoco basin in central Oregon may preserve a record of regional transpression, magmatism, and mountain building within the Late Cretaceous Cordillera. Given the volume of material that must have been eroded from the Sierra Nevada and Idaho batholith to result in modern exposures of mid- and deep-crustal rocks, Cretaceous forearc basins have the potential to preserve a record of arc magmatism no longer preserved within the arc, if forearc sediment can be confidently linked to sources. Paleogeographic models for mid-Cretaceous time indicate that the Blue Mountains and the Ochoco sedimentary overlap succession experienced postdepositional, coast-parallel, …
U.S. Geological Survey (Usgs) Topographic Map Collection, Kentucky Library Research Collections
U.S. Geological Survey (Usgs) Topographic Map Collection, Kentucky Library Research Collections
Research Collections
This is a listing of the Topo maps housed in the KLRC; 7.5, 15 and 30 minute Kentucky and Boundary State Maps. These maps are helpful in genealogy to show how the landscape may have changed and they may have the locations of lost towns and cemeteries and indicate houses, barns, and other structures and how place names, roads, and streams changed over time.
The Impact Of Upland Development And Marsh Width On Groundwater Composition In Estuarine Tidal Creeks In The Southeastern Coastal United States, Meghan Shanahan
The Impact Of Upland Development And Marsh Width On Groundwater Composition In Estuarine Tidal Creeks In The Southeastern Coastal United States, Meghan Shanahan
Theses and Dissertations
Coastal upland development has been shown to negatively impact surface water quality in tidal creeks along the southeastern coastal United States, but the impact of development on groundwater quality is not well understood. Increases in impervious cover associated with development has the potential to increase groundwater contamination as well as reduce fresh rainwater infiltration into the subsurface, which may decrease discharge of fresh groundwater to the estuary. We hypothesized that groundwater nutrient concentrations and salinity ranges would be higher in developed watersheds than in undeveloped watersheds.
Groundwater discharging from coastal uplands often travels through salt marshes before discharging to tidal …
A New Approach To Probabilistic Lava Flow Hazard Assessments, Applied To The Idaho National Laboratory, Eastern Snake River Plain, Idaho, Usa, Elisabeth Gallant, Jacob Richardson, Charles Connor, Paul Wetmore, Laura Connor
A New Approach To Probabilistic Lava Flow Hazard Assessments, Applied To The Idaho National Laboratory, Eastern Snake River Plain, Idaho, Usa, Elisabeth Gallant, Jacob Richardson, Charles Connor, Paul Wetmore, Laura Connor
School of Geosciences Faculty and Staff Publications
We present a new probabilistic lava flow hazard assessment for the U.S. Department of Energy’s Idaho National Laboratory (INL) nuclear facility that (1) explores the way eruptions are defined and modeled, (2) stochastically samples lava flow parameters from observed values for use in MOLASSES, a lava flow simulator, (3) calculates the likelihood of a new vent opening within the boundaries of INL, (4) determines probabilities of lava flow inundation for INL through Monte Carlo simulation, and (5) couples inundation probabilities with recurrence rates to determine the annual likelihood of lava flow inundation for INL. Results show a 30% probability of …
Lithospheric Layering And Thickness Beneath The Contiguous United States, Lin Liu
Lithospheric Layering And Thickness Beneath The Contiguous United States, Lin Liu
Doctoral Dissertations
"The Upper Mississippi Embayment (UME), where the seismically active New Madrid Seismic Zone resides, experienced two phases of subsidence commencing in the Late Precambrian and Cretaceous, respectively. To provide new constraints on models proposed for the mechanisms responsible for the subsidence, we computed and stacked P-to-S receiver functions recorded by 49 USArray and other seismic stations located in the UME and the adjacent Ozark Uplift and modeled Bouguer gravity anomaly data. The inferred thickness, density, and Vp/Vs of the upper and lower crustal layers suggest that the UME is characterized by a mafic and high-density upper crustal layer of ∼30 …
Assessment Of Upper Cretaceous Strata For Offshore Co2 Storage: Southeastern United States, Khaled F. Almutairi
Assessment Of Upper Cretaceous Strata For Offshore Co2 Storage: Southeastern United States, Khaled F. Almutairi
Theses and Dissertations
This is the first assessment of Upper Cretaceous strata for offshore CO2 storage resources in the southeastern United States outer continental shelf. This research focuses on Upper Cretaceous geological units using legacy industry 2-D seismic reflection and well data. It provides an integrated description and reliable subsurface evaluation of Upper Cretaceous potential storage reservoirs. In addition, it provides a detailed evaluation on how rock porosities and permeabilities are distributed across the Upper Cretaceous strata restricted to the South Georgia Embayment (SGE). Structure and thickness (isochore) maps were generated for the main potential reservoirs and seals on a regional and local …
Future Nuisance Flooding In Norfolk, Va, From Astronomical Tides And Annual To Decadal Internal Climate Variability, A. G. Burgos, B. D. Hamlington, P. R. Thompson, R. D. Ray
Future Nuisance Flooding In Norfolk, Va, From Astronomical Tides And Annual To Decadal Internal Climate Variability, A. G. Burgos, B. D. Hamlington, P. R. Thompson, R. D. Ray
OES Faculty Publications
Increasing sea level rise will lead to more instances of nuisance flooding along the Virginia coastline in the coming decades, causing road closures and deteriorating infrastructure. These minor flood events can be caused by astronomical tides alone, in addition to internal climate variability on annual to decadal timescales. An assessment of nuisance flooding from these two effects is presented up until the year 2050 for Norfolk, Virginia. The analysis of water levels indicates that nuisance flooding from tides alone in conjunction with a medium-high sea level scenario will result in flooding beginning in 2030 with frequency increasing thereafter. The addition …
Usarray Imaging Of Continental Crust In The Conterminous United States, Xiaofei Ma, Anthony R. Lowry
Usarray Imaging Of Continental Crust In The Conterminous United States, Xiaofei Ma, Anthony R. Lowry
Geosciences Faculty Publications
The thickness and bulk composition of continental crust provide important constraints on the evolution and dynamics of continents. Crustal mineralogy and thickness both may influence gravity anomalies, topographic elevation, and lithospheric strength, but prior to the inception of EarthScope’s USArray, seismic measurements of crustal thickness and properties useful for inferring lithology are sparse. Here we improve upon a previously published methodology for joint inversion of Bouguer gravity anomalies and seismic receiver functions by using parameter space stacking of cross correlations of modeled synthetic and observed receiver functions instead of standard H-κ amplitude stacking. The new method is applied to estimation …
Weather And Climate Summary And Forecast: December 2017 Report, Gregory V. Jones
Weather And Climate Summary And Forecast: December 2017 Report, Gregory V. Jones
Linfield University Wine Studies Reports
This report provides a summary of the weather and climate forecast for December 2017. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.
Getches-Wilkinson Center Newsletter, Fall 2017, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment
Getches-Wilkinson Center Newsletter, Fall 2017, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment
Getches-Wilkinson Center for Natural Resources, Energy, and the Environment Newsletter (2013-)
No abstract provided.
Changes In Severe Thunderstorm Environment Frequency During The 21st Century Caused By Anthropogenically Enhanced Global Radiative Forcing, Robert J. Trapp, Noah S. Diffenbaugh, Harold E. Brooks, Michael E. Baldwin, Eric D. Robinson, Jeremy S. Pal
Changes In Severe Thunderstorm Environment Frequency During The 21st Century Caused By Anthropogenically Enhanced Global Radiative Forcing, Robert J. Trapp, Noah S. Diffenbaugh, Harold E. Brooks, Michael E. Baldwin, Eric D. Robinson, Jeremy S. Pal
Jeremy Pal
Severe thunderstorms comprise an extreme class of deep convective clouds and produce high-impact weather such as destructive surface winds, hail, and tornadoes. This study addresses the question of how severe thunderstorm frequency in the United States might change because of enhanced global radiative forcing associated with elevated greenhouse gas concentrations. We use global climate models and a high-resolution regional climate model to examine the larger-scale (or “environmental”) meteorological conditions that foster severe thunderstorm formation. Across this model suite, we find a net increase during the late 21st century in the number of days in which these severe thunderstorm environmental conditions …
Bat Community Composition And Monitoring For White-Nose Syndrome At First State National Historical Park, Delaware And Pennsylvania, Juliet Nagel, J. Edward Gates
Bat Community Composition And Monitoring For White-Nose Syndrome At First State National Historical Park, Delaware And Pennsylvania, Juliet Nagel, J. Edward Gates
United States National Park Service: Publications
Abstract
In recent years, bats have faced increasingly deadly threats on multiple fronts. Cave-dwelling bats have been decimated by the emergence of a disease, white-nose syndrome (WNS), caused by a fungal pathogen, Pseudogymnoascus destructans; and tree bats are dying in large numbers at wind power facilities. First State National Historical Park (FRST) is a new national park unit located in northern Delaware and Pennsylvania. Prior to this study, little information was available on bat species and their activity and distribution within FRST. To fill this knowledge gap, we conducted an inventory of bat species present at FRST. We used …