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 54 for “"hydrologic cycle"”.
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Numerical experiments on the sensitivity of an atmospheric hydrologic cycle to the equilibrium temperature.
Thesis. 1977. Ph.D.--Massachusetts Institute of Technology. Dept. of Meteorology.
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Expansion of bioenergy crops in the midwestern United States: implications for the hydrologic cycle under climate change
… the potential for significant impact on the hydrologic cycle in the region. This issue is further exacerbated by the uncertainty in the response of the vegetation under elevated CO2 and temperature. This study attempts to capture the eco-physiological acclimations of bioenergy crops under …
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From groundwater to the atmosphere: using RELAMPAGO observations and modeling to understand changes in the hydrologic cycle of southeastern South America
… atmosphere and precipitation. Understanding the hydrologic cycle, and its drivers at a regional scale are of particular interest as they are the key in assessing hydrometeorological consequences associated with climate and land surface variability. Past satellite studies have revealed …
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Hydrologic Response to Prescribed Burning in the Flint Hills, Kansas
… prescribed burning on crucial parameters of the hydrologic cycle in the Flint Hills region of Kansas. The study introduces the VELAS model, which employs a daily soil water balance component, providing a more comprehensive simulation of moisture changes. The analysis of the Flint Hills' daily …
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A geochemical investigation of the Darling and Ysterfontein saline pans, Western Cape, South Africa
Saline pans are an important component of the hydrologic cycle in arid areas, and are common in South Africa. Natural saline pans on the coastal lowlands of the Western Cape Province, South Africa, were studied to determine the origin and evolution of salts within the pans. Samples of surface, …
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Evolution of the Geohydrologic Cycle During the Past 700 Million Years
… of water in these various reservoirs of the hydrologic cycle have likely varied significantly over the past 700 Ma, with the cryosphere and continental biosphere reservoirs likely showing the most dramatic variations relative to the modern. For example, 700 Ma, during snowball-Earth …
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Optimality and resilience in patterns of carbon allocation and growth in vegetation under acclimation response to climate change
… water, carbon and energy thereby impacting the hydrologic cycle. Furthermore, the consequences of this acclimation on agricultural ecosystems is critical in tackling future food security issues. In this study we investigate the acclimation response of an agricultural ecosystem and its impact on …
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Data-driven analyses of watersheds as coupled human-nature systems
… activity drive non-stationary trends in the hydrologic cycle, which make watersheds more difficult to manage. In the 21st century, successful management of water resources requires an improved understanding of the emergent properties of coupled human and natural systems and fully integrated …
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Application of a K-Nearest Neighbour weather generator for simulation of historical and future climate variables in the Upper Thames River basin
… has the potential to significantly alter the hydrologic cycle, changing the frequency and intensity of precipitation events in an area. It is necessary to quantify these effects to effectively manage water resources in the future. Atmosphere-Ocean coupled Global Circulation Models (AOGCMs), …
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Implications of the Late Quaternary Glacio–Eustatic Sea level Changes in the Black Sea Catchment Area
… sea level fluctuations during the Last glacial cycle. In order to reconstruct the most plausible scenario of the Black Sea reconnection with the Mediterranean, we integrated various data sets available in the literature. It is shown that the redistribution of sea - land can have a significant …
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Occupancy and Detection Rates of Salamanders in Association with Altered Water Regimes at Mingo National Wildlife Refuge in Southeastern Missouri
… have resulted in an ecosystem with an altered hydrologic cycle. In order to determine whether these wetlands provide adequate resources for amphibians, I set traps on wetlands during 2011 and 2012. I also collected data on the diversity and abundance of reptiles, fish, and invertebrates at each …
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Analysis of Transient Fog Features on Titan
… system body other than Earth with an active hydrologic cycle, based on methane instead of water. To better characterize this environment, this thesis examines transient low-altitude methane clouds (hereafter referred to as fogs) that have been observed near Titan’s surface in data from the …
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Temporal Change in Fish Communities and Modification of the Index of Biotic Integrity for the James River of the Dakotas
… Fluctuations in flow rates over a wet I dry hydrologic cycle result in habitat instability, leading to an unstable, yet persistent, fish community. My first objective was to examine persistence of the James River fish community over an 11 and 25-year period. My second objective was to assess …
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Exploring the effects of uncertainty in hydrologic modeling and reconciling spatiotemporal data gaps at the continental scale
Spatiotemporally continuous estimates of the hydrologic cycle are often generated through hydrologic modeling, reanalysis, or remote sensing methods, and commonly applied as a supplement to, or a substitute for, in-situ measurements when observational data are sparse or unavailable. Increased …
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Implementation of a snow routine into the hydrological model WASA-SED and its validation in a mountainous catchment
… and melt constitute important components of the hydrologic cycle. With the objective to improve model performance of the hydrological model WASA-SED (Water Availability in Semi-Arid environments - SEDiments) in catchments affected by snow and ice, a physically-based snow routine has been …
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THE NEW URBAN SOFTSCAPE : URBAN PARK AS WATER INFRASTRUCTURE
… falls. The park is designed to harness both the hydrologic cycle and aesthetic qualities of water, celebrating the role of water in our urban landscapes and allow users to experience the qualities of water through touch, sight and sound. The collection and conveyance of water would be part of the …
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Uncertainties in space-based estimates of clouds and precipitation: implications for deriving global diabatic heating
… between the climate, energy budget, and global hydrologic cycle. The problem of establishing observational evidence for these connections and climate change in general, poses a significant challenge to the observational community. This dissertation seeks to address the components of this problem …
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Cyclostratigraphy And Sedimentation Of The Cenomanian-Turonian Tuscaloosa Marine Shale
… proposed that variations in insolation and the hydrologic cycle drove cyclic sedimentation by varying primary productivity and continental weathering.</p>
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Hydrogeology of the Shell Creek area, Mountrail County, North Dakota
… system and relates it to the rest of the hydrologic cycle.</p>
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The reasonable use concept in Virginia water law
… little apparent regard for the existence of the hydrologic cycle and the interrelationships between the water in its various phases, and separate doctrines of law exist for natural watercourses, percolating ground water, and diffused surface water. Each of these doctrines relies on some form of a …
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