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.
Results
Showing 1 to 11 of 11 for “"long term variations"”.
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Tropical climate variability from the last glacial maximum to the present
… component of both tropical and global climate. Long-term variations in the position of the ITCZ in the Atlantic region are determined using both organic geochemical techniques and climate modeling. Upwelling in Cariaco Basin is reconstructed using chlorin steryl esters as proxies for …
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Management of disinfection byproduct production in small drinking water systems
… available organic material. Both seasonal and long-term variations in bromine-substituted THMs were observed, with higher apparent bromide concentrations noted during periods of lower river flow rate. Bromide was also found in THMs at upstream Missouri River water utilities, indicating that …
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Assessing factors contributing to the changes in historical temperature extremes and investigating future changes in extreme events
… warming. Therefore, comprehensive knowledge of long-term changes in the observed temperature extremes cannot only help to detect, attribute, and project climate change but can also enhance the development of effective mitigation and adaptation strategies (at regional or site-specific scales) …
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Tropical climate variability from the last glacial maximum to the present
… component of both tropical and global climate. Long-term variations in the position of the ITCZ in the Atlantic region are determined using both organic geochemical techniques and climate modeling. Upwelling in Cariaco Basin is reconstructed using chlorin steryl esters as proxies for …
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FACTORS INFLUENCING A PETAL-BASED FORECASTING SYSTEM FOR SCLEROTINIA STEM ROT OF CANOLA
… mediated fluctuations in petal infestation; and long-term changes in infestation during flowering. Disease incidence was significantly related to canopy density,as indicated by percentage light penetration through the canopy, and increased as light penetration decreased. Higher disease incidence …
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Spacecraft Orbit Design in the Circular Restricted Three-Body Problem Using Higher-Dimensional Poincaré Maps
… map formulation. Human insight is leveraged to determine reference solutions in a problem without a closed-form analytical solution. Estimates obtained through visual inspection of a map are fed into automated processes, leading to precise and/or locally-optimal solutions, including transfers to …
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Spatial and temporal estimation of pumping and recharge in groundwater system analysis
… over the aquifer. Results show how seasonal- and long-term variations in agricultural demand and rainfall can significantly impact the recharge. The pumping and recharge rates are incorporated into a regional groundwater model of the Chicot aquifer to simulate the groundwater flow over an 11 year …
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Incoherent short pulse scattering from penetrable geophysical media
… a useful means for monitoring both short and long term variations in the near surface region of the ice sheet while simultaneously providing precise estimates of the ice sheet elevation.
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Regional climate model evaluations of long-term changes in total precipitation and high precipitation events
… very limited studies on modeling evaluation of long-term trends in extreme precipitation events over the contiguous U.S. This study examines the downscaling skills of a state-of-the-art regional climate model, the Climate extension of Weather Research and Forecasting Model (CWRF), in evaluating …
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Environmental Change Impacts on Marine Calcifiers: Spatial and Temporal Biomineralisation Patterns in Mytilid Bivalves
… is derived largely from short- and medium-term laboratory and field experiments. Therefore, little is known about the biological mechanisms and key drivers in natural environments that shape regional differences and long-term variations in species vulnerability to global changes. In this …
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Recognition and investigation of temporal patterns in seismic wavefields using unsupervised learning techniques
… recognition of wavefield patterns, such as short-term transients and long-term variations, with a minimum of domain knowledge. Besides classical earthquake seismology, investigations of temporal patterns in seismic data also concern novel approaches such as noise cross-correlation or ambient …