1,779 research outputs found
A survey of soil freezing on the east side of the Sierra Nevada
Full text linkThesis Number: 368.Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology Act (LSTA). To obtain a high quality image or document please contact the DeLaMare Library at https://unr.libanswers.com/ or call: 775-784-6945.Disastrous winter floods that stem typically from prolonged 1ow-intensity rains are not uncommon on the east slope of the Sierra Nevada. The rain usually falls upon shallow snowpacks that often melt completely and contribute additional water to flood runoff (Haupt, 1967). According to McGlashen and Briggs (1939), floods occurred on the east side of the Sierras 9 times from 1861 to 1937. Young and Harris (1966) state that additional floods occurred in 1950, 1955, and 1963. Soil freezing has been repeatedly singled out as a primary cause of winter flooding (McGlashan and Briggs, 1939). However, literature on the subject is so scanty that it is not possible to substantiate or refute this charge. The author knows of only three soil freezing studies, in addition to the one just completed, that have been conducted in the Sierras. One study was conducted by H. F. Haupt (1967) in Dog Valley, California, on the east side of the Sierras near Reno, Nevada. A soil freezing investigation at North Fork, California, at 2700 feet in the foothills of the west slope of the Sierras was headed by H. W. Anderson (1947) and a soil temperature and freezing study is presently being conducted by the Intermountain Forest and Range Experiment Station near Slide Mountain and Clear Creek, Nevada. Since the above studies were restricted to a handful of areas, it was impossible to determine if soil freezing was a limited or widespread phenomenon in the Sierras during the winter. To eliminate some speculation, the present study was undertaken to determine the extent, severity, and duration of soil freezing on the east slope of the Sierra Nevada. Secondary objectives centered around the effect of hydrophobic soil on the freezing of soil and the effect of soil frost on infiltration. Much of the research was restricted to the east side of the Sierras but some areas were also studied on the west slope
Ozone in Rural Nevada: Investigating spatio-temporal patterns and source regions contributing to elevated concentrations
Full text linkIn 1993, an ozone (O3) monitoring site was established at Great Basin National Park (GBNP), located in rural eastern Nevada. Analyses of data from this site indicate that compliance with a revised National Ambient Air Quality Standard (NAAQS) <70 ppb will be challenging. With the exception of GBNP, ambient O3 monitoring has been limited to the areas in and around the 3 urban areas of Nevada. The objectives of the research presented here were to (1) characterize spatial and temporal trends in ambient O3 across rural Nevada, and (2) identify source regions contributing to elevated O3 in rural Nevada. To pursue these objectives, a network of 13 monitoring sites was established throughout rural Nevada over a period ranging from July 2011 to June 2014. Data from 6 sites during the first 2 years of measurement indicate that maximum MDA8 O3 ranged from 68 to 80 ppb. Ambient O3 measured at GBNP was significantly higher than that measured at other rural Nevada sites. Back trajectory analyses, vertical profile measurements from aircrafts and sondes, statistical analyses, as well as results of regional and global models were employed to identify sources contributing to elevated O3. Our analyses indicate that regional and global sources contribute to O3 at surface sites throughout rural Nevada and that the high elevation and complex terrain make the State ideally situated to intercept air from the free troposphere and thus, pollution derived from complex sources included long-range transport, stratospheric intrusions, and regional emissions. Our data suggest that regional and global cooperation will be necessary to comply with a revised NAAQS in rural Nevada
Investigating the anthropogenic effects on sedimentation rates and provenance of Lake Vera, California
No full textLake Vera is a man-made reservoir located on Rock Creek in the Sierra\ud
Nevada foothills in Nevada County, CA. This reservoir provides an opportunity to\ud
investigate the effects of natural and anthropogenic processes on reservoir sedimentation\ud
rates and provenance through a combined stratigraphic analysis, radionuclide Cesium-\ud
137 (137Cs) dating study, hydrologic analysis, and provenance study. Three bank-cut sites\ud
from Rock Creek???s stream channel in Lake Vera???s lake bed were used to stratigraphically\ud
map and date unique layers in the lake bed; this was complemented with 137Cs\ud
radionuclide dating. Direct analysis of Lake Vera???s inflows, Rock Creek and Brush\ud
Creek, spanning the 2010???2011 and 2011???2012 rainy seasons measured each stream???s\ud
discharge and turbidity at times of sediment deposition in the lake. A petrographic study determined provenance by comparing lithics from three stratigraphically mapped\ud
correlated layers at each site. Sand-grain compositional data from the correlated layers\ud
was compared with that of upstream samples and known rocks in the watershed to\ud
establish different sediment sources over the life of the reservoir.\ud
The study outlined three time periods of deposition in the reservoir???s life:\ud
1926???1954, 1954???1963, and 1963???2012. The calculated sedimentation rates for each\ud
time period were 0.76, 1.26, and 0.24 inches per year, respectively. The significant\ud
decrease in sedimentation rate from 1.26 to 0.24 inches per year is attributed mostly to\ud
the change in outflow structures of the dam in 1966 and better forest management\ud
practices to deal with erosion. The most recent rate of 0.24 inches per year is less than the\ud
0.50 inches per year originally hypothesized by the lake???s owners, which extends Lake\ud
Vera???s life past the estimated 150 years. Brush Creek was found not to be a significant\ud
source of sediment during times of sediment deposition.\ud
Provenance of the most recently deposited sediment was found to be Eoceneaged\ud
gravel deposits. However, non-uniform results from samples in the lower sections in\ud
the stratigraphy prevented any provenance determination. These results are attributed to a\ud
large logging operation on the North Branch of Rock Creek in the early 1940s, and\ud
reworking of sediment from a previous dam at the location. Flushing was found to be the\ud
most effective and affordable technique to prevent sediment build-up in Lake Vera.CSU, Chic
Criminal Arrests in Clark County, Nevada, by Jurisdiction 2006-2016
No full textCriminal arrests in Southern Nevada are on a downward trend. Despite a record-setting influx in population across the Las Vegas Valley and the surrounding metro area, officers in each of Clark County’s police jurisdictions arrest fewer people every year. The present study utilizes the Arrest Trends Tool created by the Vera Institute of Justice and the FBI’s Uniform Crime Reporting (UCR) Program to measure the number of arrests made over ten years for a variety of illegal activities, including drug abuse, violence and murder, property crimes, sex crimes, alcohol-related crimes, theft, white collar crimes, and other offenses. This data set summarizes arrest trends from 2006 to 2016—before, during, and after the Great Recession—to examine the implications of static versus changing crime rates. In keeping with the current findings regarding policing and prisons in the U.S., this study is meant to gauge the contingent levels of convictions and incarcerations in Nevada\u27s most populous metro
The Curious Life of Nevada\u27s Lavere Redfield
No full textIn this interview, author Jack Harpster discusses the subject of his most recent book, a Northern Nevada millionaire who was reportedly the state\u27s first ultra-high limit gambler
Restricted reconnaissance: The history and archaeology of S M Wheeler in Nye County, Nevada
No full textRestricted Reconnaissance: The History and Archaeology of S. M. Wheeler in Nye County, Nevada reconstructs the archaeological career and life of one of Nevada\u27s first archaeologists. Specifically, during the months of February and May of 1940, Wheeler worked in Nye County, Nevada. He conducted survey and collections from 12 archaeological sites which are now within the environs of the Nevada Test Site. The field notes and collections from this fieldwork were analyzed by the author in 1995. In addition, the author revisited the archaeological sites and analyzed the artifact assemblages collected by Wheeler. The results of the analysis and fieldwork will be presented in this thesis
Bittersweet
No full textA novel by Nevada Barr Bard Books (Paperback, $13.50, ISBN: 0380799502, 9/1999) (Originally Published 1984) This is a novel of power and vitality that will grip the reader... The author\u27s skill in writing lively, often humorous dialogue and in developing strong, unique characters in a setting described with authenticity is impressive.https://egrove.olemiss.edu/mwp_books/1039/thumbnail.jp
Butterflies of the Sierra Nevada
Full text linkMarch 10, 2020.Includes bibliographical references.This publication covers the butterfly fauna of the Sierra Nevada mountain range in eastern California and a small area of the Carson Spur in western Nevada. At present (2019), 192 species, 104 subspecies and 15 segregates are known to have occurred within the range at least twice. Five additional species have been recorded at least once in the Sierra Nevada. This publication covers distributions of these butterflies within the Sierra Nevada and three National Parks, their habitats, flight periods and taxonomic issues based on current knowledge
1 October Remembrance Ceremony
No full textOn October 1, 2018, the University of Nevada, Las Vegas held a remembrance ceremony for the victims of 1 October mass shooting which occurred October 1, 2017. UNLV faculty, students, and staff participated in the event with a selection of remarks and performances.
Schubert\u27s String Quartet No. 13 in A Minor: The Rosamunde Quartet Ambroise Auburn, Violin I Weiwei Le, Violin II Kate Hamilton, Viola Andrew Smith, Cello
Remarks by UNLV President Marta Meana
Sarasate\u27s Ziguenerweisen Weiwei Le, Violin Darryl Cooper, Accompanist
Schubert\u27s String Quartet No. 13 in A Minor: The Rosamunde Quartet Zack Frongillo, dancer A.J. Vehec, dancer
Poem: 58 Bells read by Eryn Green (author)
58 Chimes played Gabriela Ordonez-Villalobos
Traditional Spiritual, Deep River Richard L. Hodges, Baritone Darryl Cooper, Accompanist
Closing Remarks by UNLV President Marta Meana
Traditional Spiritual, Down by the Riverside Richard L. Hodges, Baritone Darryl Cooper, Pian
Electrowinning cerium and lanthanium metals from their oxides
No full textThesis Number: 65.Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology Act (LSTA). To obtain a high quality image or document please contact the DeLaMare Library at https://unr.libanswers.com/ or call: 775-784-6945.Procedures for electrowinning high-purity cerium and lanthanum metals from their oxides were developed at the Reno Metallurgy Research Center of the Federal Bureau of Mines. Experiments requisite to developing these procedures were planned and performed under the supervision of Edward Morrice, Extractive Metallurgist. Mr. Morrice is the senior author of the attached Reports of Investigation, 5549, 5868, and 607 5, which contain the pertinent metallurgical laboratory data
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