Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 95 for “"Southwestern United States"”.
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Permo-triassic paleogeography and tectonics of the southwestern United States
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1985.
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Paleomagnetism of Late Triassic and Jurassic sediments of the southwestern United States.
Paleomagnetic poles were obtained from the Chinle, Kayenta, Summerville, and Morrison Formations. Combined with paleomagnetic poles from the Moenave Formation, poles from the Chinle and Kayenta formations record ∼30 m.y. of North American apparent polar wander (APW) within a regional stratigraphic …
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Thermal Gradients in Southwestern United States and the Effect on Bridge Bearing Loads
… on bearing loads. The climate condition of the southwestern portion of the United States may cause larger thermal gradients than recommended by AASHTO LRFD Bridge Design Specifications. The main objective of this study was to evaluate the effect of thermal gradients in the southwestern region of …
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Characterization and classification of Native American maize landraces from the Southwestern United States
<p>The importance and diversity of maize in the Southwestern United States, and questions about their relationships to environmental and cultural factors, drove the need to characterize and classify known existing landraces. Maize landraces and human cultures have co-evolved, with maize being …
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A magnetotelluric investigation of an electrical conductivity anomaly in the southwestern United States
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1967.
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Trends and interannual variability in snowpack and spring season hydroclimatology in the southwestern United States
… in Arizona and much of New Mexico, the southwestern U.S. is a compelling location in which to study how temperature and seasonal snowpack interact to affect spring hydroclimatology. Understanding snowpack-mediated spring soil moisture and how observed, current changes in the regional …
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Suitability modeling and the location of utility-scale solar power plants in the southwestern United States
As states and regions have begun prioritizing renewable energy at the legislative level, solar energy has started to play a noticeably larger role in the energy portfolio of certain regions in the United States. Decision making concerning the siting of new solar facilities can be complicated, and …
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Knowledge Transfer Challenges Army Leaders Experience at a Southwestern United States Military Installation: A Case Study
… perceptions of knowledge transfer at a single Southwestern United States military installation. The study identified challenges senior leaders experienced when conducting knowledge transfer. In addition to identifying challenges, the study also examined how best practices were implemented to …
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Winter ecology of migratory Brazilian free-tailed bats (Tadarida brasiliensis) in bridges of the southwestern United States.
Bats are diverse and ubiquitous mammals with a worldwide distribution. In the U.S., especially the southwest, Brazilian free-tails (Tadarida brasiliensis: I. Geoffroy Saint-Hilaire, 1824) are arguably the most abundant bat in the western hemisphere. These insectivorous bats range from Nebraska to …
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The analysis of reservoir operation rules in the southwestern United States using a hidden Markov-decision tree model
… to describe the transition between operation states while each state corresponds to a decision tree model to determine daily reservoir releases. This study collected the historical records of 66 reservoirs in the southwestern United States and 8 reservoirs in the northern United States and …
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Testing a physically-based distributed model (KINEROS) : predicting runoff and erosion from a semi-arid hillslope in the southwestern United States
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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GEOCHRONOLOGY, GEOCHEMISTRY, AND TECTONIC CHARACTERIZATION OF QUATERNARY LARGE-VOLUME TRAVERTINE DEPOSITS IN THE SOUTHWESTERN UNITED STATES AND THEIR IMPLICATIONS FOR CO2 SEQUESTRATION
Travertines are freshwater carbonates that precipitate from carbonic groundwater due to the degassing of CO2. Travertine deposits are often situated along faults that serve as conduits for CO2-charged groundwater and their geochemistry often records mixing of deeply-derived fluids and volatiles …
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Extent And Distribution Of Montane Riparian Zone Vegetation And Representation In Protected Areas In The Sky Island Region Of The Southwestern United States
The Sky Island region of the southwestern United States hosts some of the richest biodiversity anywhere in the world. In the mountain ranges of the Sky Islands, most vertebrate biodiversity is dependent on riparian areas for all or some of their life cycles. Riparian vegetation is threatened by …
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The Future of Biofuels: An Economic Analysis of the Design and Operation of a Microalgae Facility in Texas and the Southwestern United States
The world of energy is changing. With rising energy costs and concerns over the supply of energy materials, more research is being conducted into alternative sources of fuel and microalgae is one of the sources being researched, although much research had been conducted on it as a part of the …
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The Combined Role of ENSO-driven Sea Surface Temperature Variation and Arctic Sea Ice Extent in Defining Climate Conditions in the Southwestern United States
Previous research indicates that future reductions in Arctic sea ice cover (SIC) could alter storm tracks and precipitation patterns in western North America and negatively impact water resources in the American southwest. Other research suggests that multiple periods of increased precipitation …
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A Thousand Miles Out of My Mind
… Grail quest that takes place primarily in the Southwestern United States. The short stories are mostly set in the southwest as well, and take for their topic what Paul Fussel refers to as "hope abridged." The essays are non-fiction.
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An Evolutionary and Ecological Investigation into the Enigmatic Stalked Puffball Genus Tulostoma
… center of diversity for the genus occurs in the southwestern United States. In this research, I reconstructed the phylogeny of Tulostoma using newly sequenced collections combined with available sequence data. This phylogeny, inferred from ITS, LSU, and Tef1α sequence data confirms the monophyly …
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CHARACTERIZATION OF THE NORTHERN HEMISPHERE GLACIAL CYCLE-II AND TERMINATION FROM HIGH RESOLUTION SPELEOTHEM ISOTOPE AND TRACE ELEMENTAL TIME-SERIES DATA, SOUTHWEST UNITED STATES
… records from two speleothems from the southwestern United States (SW USA) are used to constrain the timing and character of the Penultimate Glacial period (NH Glacial-II) and the following glacial termination (T-II) in the northern hemisphere (NH). Speleothems FS-TR3 from Fort Stanton …
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Analysis of cyclic shallow-water carbonates: Cambrian Highland Peak Formation, eastern Nevada
… Cambrian shallow-water carbonate rocks in the southwestern United States and to refine stratigraphic correlation of this interval. Embedded Markov chain and cycle architectural analysis define the high-frequency accommodation signal, whereas cycle grouping pattern and facies proportions …
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Rodent effects on shrubs in a Mojave Desert shrub community
… and abundance of annuals in the deserts of the Southwestern United States. I characterized shrub distribution and soil parameters on and off rodent mounds in a Coleogyne ramosissima community in Lucky Strike Canyon near Las Vegas, Nevada and performed several experiments to investigate rodent …
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