Thesis (Ph. D.)--Johns Hopkins University. / Vita. "Reprinted from Report of Maryland state weather service, vol. 1, 1899."

Thesis (PH.D.) -- Syracuse University, 2004. / Adviser: Bendix, Jacob. "Publication number AAT 3135874."

Inaug.-diss.--Erlangen. / Curriculum vitae. Issued also as Münchener geographische Studien, hrsg. von S. Günther. 20. Stück. "Hauptquellen": p. [vii]-viii.

Thesis (M.S.)--University of Wisconsin--Madison, 1970. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thèse--Paris. / Bibliography: p. 305-306.

Thesis (Ph. D.)--Syracuse University, 2005. / "Publication number AAT 3177020."

Thesis (Ph. D.)--University of Hong Kong, 2006.

Thesis (Ph. D.)--University of Chicago, 1915. / "A Private edition distributed by the University of Chicago Libraries." "Reprinted from Iowa Geological Survey, Volume XXV, Annual Report for 1914, Des Moines, 1916." All plates, except the 2 folded, are included in the paging. Includes bibliographical references. Also available on the Internet. Also issued online.

Electron Spin Resonance (ESR) dating has many potential applications in the fields of archaeology and Quaternary geomorphology. In particular, it offers a useful addition to more established techniques for dating speleothems, which not only have relevance to Quaternary geomorphology but may also carry palaeomagnetic and palaeoclimatic data. This work consolidates the method of ESR dating, with special reference to calcite speleothems, and contributes to several important aspects of the methodology. Using a low energy nuclear accelerator as a source of alpha particles of various energies, it is shown that the effectiveness of alpha radiation in producing paramagnetic defects is energy dependent, and approximately linearly related to the range of the incident alpha; the implications for dose rate calculations are discussed, and ranges are calculated for alpha particles of different energies for various dating materials for use in applying the above finding. The alpha/gamma effectiveness ratio, k, is experimentally determined for 18 calcite speleothems as k$/sb[/rm av]$ = 0.052 $/pm$ 0.006, which is significantly less than most previous estimates. The k-value for a coral sample is 0.055. By examining the Th-230/Po-210 ratios of 19 speleothem samples it is shown that for almost all speleothems, radon is retained within the sample until its decay; thus the full radionuclide decay chains should be used in dose rate calculations. Analysis of 'typical' calcite spectra confirms that interference between peaks of different origins and stability affects the estimate of accumulated dose (AD), and provides a rational basis for decisions on different sample preparation methods and analytical procedures. The effect of these on age estimates is examined and routine experimental methods recommended. The effect of different ESR spectrometer operating parameters is also evaluated and it is shown that the use of high microwave power avoids potentially serious underestimation of the accumulated dose (AD). A straight-forward statistical method is developed; this enables confidence limits to be derived for AD and provides a test for equivalence of AD estimates, using standard linear hypothesis techniques. A robust Geiger Muller instrument sufficiently sensitive to give estimates of relative gamma dose rates in a few minutes is developed specifically for cave dosimetry. It has the potential, with further development and cross-calibration, to become a viable method for measuring absolute environmental gamma dose rates. Serious discrepancies between two 'absolute' dosimetry methods are revealed; this and other problems of environmental gamma dosimetry are discussed. The evaluation of gamma dose rates in calcite (with respect to both laboratory and field dosimetry) and the form of the dose response curve (including the possibility of supra-linearity and non-thermal instability) are identified as areas requiring further research.

The land use sector has the potential not only to lower its greenhouse gas emissions, but also to sequester CO2 in soils through land use change and management practices. This represents an important mitigation opportunity, but there is a lack of knowledge in the potential of carbon sequestration between different land use types. This study examines soil organic carbon content and soil organic matter in a nature reserve in eastern middle Sweden. Methods include a change analysis of land use, values for soil organic carbon content from a literature review and soil samples for concentrations of soil organic matter. The study area has in terms of soil carbon been a source of atmospheric CO2 between 1945 and 1997, mainly due to a change from semi-natural grasslands to coniferous forest, resulting in a loss of 2209 tonnes of soil organic carbon. Results also show that wet grasslands and deciduous forests are the land use types with the highest potential to sequester carbon in shorter time spans. Older coniferous forests can store large amount of soil organic carbon, but younger coniferous forests and plantations, and cultivated lands were the land use types with the lowest values of soil organic carbon. Semi-natural grasslands have potential to store soil organic carbon but rates varied between samples and literature.