Cameron Lawrence Thesis (PDF 2MB)
QUEENSLAND UNIVERSITY OF TECHNOLOGY SCHOOL OF PHYSICAL AND CHEMICAL SCIENCES MEASUREMENT OF 222Rn EXHALATION RATES AND 210Pb DEPOSITION RATES IN A TROPICAL ENVIRONMENT Submitted by Cameron Lawrence (B. App. Sc., M. App. Sc.) to the School of Physical and Chemical Sciences, Queensland University of Technology, in partial fulfilment of the requirements of the degree of Doctor of Philosophy. March 2005 Key Words Radon, exhalation, emission, Lead-210, deposition, excess, redistribution, budget, Kakadu, Ranger, uranium, mining, radionuclides, isotopes, soil moisture, radium, activity concentration, land application, soil erosion, atmospheric transport, geomorphic landscapes, tropics, Alligator Rivers Region, environmental radioactivity, Jabiru, atmospheric dispersion, soil profile, diurnal, seasonality, wet season, dry season, precipitation scavenging, aerosol transport, aerosol removal, Hadley circulation, water inundation i Acknowledgements I owe great thanks to my supervisor Dr. Riaz Akber for all his support and effort during the course of this project, his assistance and direction has been invaluable. Many thanks also go to my external supervisor and the other support staff of the Enrad group at eriss, Dr. Paul Martin, Dr. Andreas Bolhöfer, Mr. Bruce Ryan, Mrs. Therese Fox and Mr. Peter Medley, for their countless hours of assistance, sample analysis and data retrieval. I also owe many thanks to the remainder of the eriss team, especially the Jabiru Field Station, for their support during my time in Jabiru. Eriss provided my accommodation and all work facilities for the 20 months of my stay at Jabiru and for that I am gratefully appreciative. Major parts of this project would not have been possible without the assistance of ERA personnel, specifically Mr.
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