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 11 of 11 for “"amount effect"”.
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Precipitation amount, altitude, and moisture trajectory effects on the stable isotopic composition of precipitation in the Galapagos Islands
… re-evaporation of falling rain. An altitude effect is also apparent, based on daily precipitation and δ18Op measurements across a 35 km transect of the island, with δ18Op decreasing by 0.2‰/100 m elevation. HYSPLIT backward trajectory modeling reveals important differences in how the path of …
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Addressing Water Resource Issues In Barbados Through An Isotopic and Atmospheric Characterization of Precipitation Variability
… significant correlation, indicating the amount effect was not present at a weekly resolution. The amountweighted precipitation δ<sup>18</sup>O values were calculated on a monthly basis and compared to TRMM monthly rainfall and island-wide monthly rainfall, and a statistically significant …
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Discounting of Probabilistic Reinforcers by Pigeons
… combined the concurrent-chains and the adjusting-amount procedures, to study probability discounting in pigeons. The concurrent-chains procedure included a non-independent VI 30-second schedule in the initial link, during which pigeons revealed their preference between a smaller, more likely …
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STRATIGRAPHIC FRAMEWORK AND QUATERNARY PALEOLIMNOLOGY OF THE LAKE TURKANA RIFT, KENYA
… in moisture source. In addition to the source effect, a possible vegetation effect was quantified using stable carbon isotopes of leaf waxes, and the amount effect was estimated using modern Kenyan amount effect coupled with a published basin fill model. It was determined that vegetation can …
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Stable isotope hydrology of the Table Mountain group
… that of the rain values, due to the averaging effect from mixing during groundwater flow. Rainfall isotope composition is negatively correlated with continentality, as defined by the product of distance to the Atlantic and the closest coast. Isotope composition of rainfall is also strongly …
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Essays on Retail Lending
… offered higher interest rates or smaller loan amounts by a competitor. Surprisingly, the loan amount effect is larger than the interest rate effect. Loan amount is also more closely related to lender choice than is interest rate. In the second essay, with Dimuthu Ratnadiwakara and Kevin Roshak, …
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A study of isotopic composition of xylem water of woody vegetation and groundwater along a precipitation gradient in Namibia
… attributed mainly to continental, elevation and amount effect. Both groundwater and xylem water samples plotted below the GMWL, however plant xylem were more depleted in comparison to groundwater. Throughout all the sampling sites there was a considerable variation in average isotope ratio of …
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Hydrochemical dynamics on sub-Antarctic Marion Island
… by precipitation. Following high precipitation amounts low stream water δ²H and δ¹⁸O values were recorded. This was likely the result of the "amount effect". Similarly, a decrease in ion concentrations was also observed following high rainfall amounts. This was because of stream dilution. …
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Groundwater hydrogen, oxygen, and strontium isotope variation of Hout Bay Valley, Cape Town
… µS/cm to 2370 µS/cm. Hout Bay monthly rainwater amount, δD, and δ18O were measured from March 2020 to February 2021. The weighted mean δD and δ18O values of Hout Bay monthly rainwater from March 2020 to February 2021 are - 6.2‰ and -2.38‰ respectively. The δD and δ18O values of Hout Bay rainwater …
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Plant organic matter mobilization and export in fluvial systems
… laboratory, allowing the investigation of the effect of vegetation cover, climate, and topography on plant organic matter mobilization and export in tributaries along the gradient. Based on hydrogen isotope measurements of plant waxes sampled along the Arun River and its tributaries, I first …
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Changes in monsoonal precipitation and atmospheric circulation during the Holocene reconstructed from stalagmites from Northeastern India
… although in tropical and subtropical regions the amount effect is commonly called to explain strongly depleted isotope values during enhanced rainfall, alone it cannot account for observed rainwater isotope variability in Meghalaya. Monitoring of rainwater isotopes shows no expected negative …