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101.
Zbigniew Sorbjan 《Boundary-Layer Meteorology》1988,44(3):255-266
Airplane measurements in the stable boundary layer during the SESAME-1979 experiment (southcentral Oklahoma, U.S.A.) are examined in terms of the local similarity theory. The obtained results are compared with data from the Minnesota (1973) experiment and with data collected previously on towers in Cabauw (Netherlands) and Boulder (Colorado, U.S.A.). The comparison indicates that the SESAME data are strongly influenced by the terrain features of the experimental site.On leave from: Institute of Environmental Engineering, Warsaw Technical University, 00653 Warsaw, Poland. 相似文献
102.
David Gubbins Emile A. Okal Roberto Scarpa R. E. Anderson Leszek Czechowski Rodney W. Page Bernhard Spörli Magdalena Kądziałko-Hofmokl J. A. Majorowicz Gregory Houseman Donald L. Turcotte David F. McTigue Teng-fong Wong David Lockner David V. Wiltschko David M. Fountain G. P. Glasby R. J. Angel S. J. Gibowicz Jonathan Franzen Kacper R. Rybicki Brian Farrell Anil Suri Zbigniew W. Kundzewicz Witold G. Strupczewski 《Pure and Applied Geophysics》1988,127(4):695-752
103.
Three statistical models of oil and gas exploration prevail in the literature: field size distribution, exploration function, and effectiveness of exploration models. They may have many functional forms and may be used for prediction and planning results of future exploration activity. A review of American and Soviet literature of exploration models is presented with special emphasis on functions suitable for countries which, like Poland, are not rich in oil and gas. Two new procedures are proposed: a method for assessing field size distribution and a method for simultaneous interval estimation of parameters of the exploration function. The methods complement existing ones as they are suited to areas that are not rich in hydrocarbons. Examples of application to exploration of two Polish petroliferous basins are given. 相似文献
104.
Zbigniew Hladysz 《Geotechnical and Geological Engineering》1989,7(4):315-322
Summary Preliminary studies of the stability of Mt Rushmore shows a tendency for permanent crack deformation resulting from seasonal opening and closing of cracks in the structure. 相似文献
105.
Zbigniew Jaworowski Maria Bysiek Ludwika Kownacka 《Geochimica et cosmochimica acta》1981,45(11):2185-2199
Concentrations of 137Cs, 210Pb, 226Ra, U, V, Pb, Cd and Hg have been measured in firn and ice deposited during the past three decades in accumulation zones of glaciers and also in pre-industrial glacier ice collected in Spitsbergen, Northern Norway, Alaska, Southern Norway, Alps, Himalayas, Ruwenzori, Peruvian Andes, and at King George Island in Antarctica. Except for Hg, the geographical distribution of mean concentrations of 226Ra, U and stable heavy metals in contemporary ice is not uniform, with the lowest concentrations found in Northern Norway, Alaska and Antarctica, and the highest in continental locations at equatorial and middle latitudes. We did not find evidence of changes in rate of metal deposition during the last three decades, as compared with pre-industrial period, however, our samples of pre-industrial ice might be contaminated in part by contemporary fallout migrating from the exposed surface of old parts of glaciers into the deeper ice layers. Using the data on annual injections of 137Cs into the global atmosphere and mean global concentrations of radionuclides and heavy metals found in contemporary ice the global annual flows of 226Ra, 210Pb, U,V, Pb, Cd and Hg were estimated as 6.6 kCi, 485 kCi, 12kt, 4870kt, 590 kt, 180 kt and 190 kt, respectively. These estimates are 1–2 orders of magnitude higher than estimates based on primary paniculate emissions. The anthropogenic contribution is a small fraction of the flows, which are dominated by natural processes leading to enrichment of metals in airborne dust. 相似文献
106.
Zbigniew Adamczyk Wanda Barzyk Jan Czarnecki Andrzej Pomianowski 《International Journal of Mineral Processing》1980,7(1):57-77
The results of potassium ethyl xanthate (EtXK) consumption measurements by synthetic chalcocite (Cu2S grain-sized classes of 60–75 μm and 120–200 μm, respectively) are presented. These measurements were done in a modified circulation apparatus in an argon or oxygen atmosphere at pH=9.5. The experimental results were compared with theoretical results predicted by a mathematical model based on the assumption that the EtX? ions were immobilized as a result of a chemical reaction (or reactions), e.g., of an ion-exchange type, taking place within the oxidation product layer (OPL), formed on the Cu2S surface.The experimental and theoretical results are in good agreement especially for small values of Q0 (Q0 is the initial mass of the EtX? in solution per mass unit of Cu2S). In this case both the theoretical and experimental results show that the EtX? concentration in solution decays exponentially with time. 相似文献
107.
On similarity in the atmospheric boundary layer 总被引:2,自引:2,他引:2
Zbigniew Sorbjan 《Boundary-Layer Meteorology》1986,34(4):377-397
A similarity theory for the atmospheric boundary layer is presented. The Monin-Obukhov similarity theory for the surface layer is a particular case of this new theory, for the case of z 0. Universal functions which are in agreement with empirical data are obtained for the stable and convective regimes.On leave from Institute of Environmental Engineering, Warsaw Technical University, 00653 Warsaw, Poland. Present address, Department of Geological and Geophysical Sciences, University of Wisconsin, Milwaukee, WI 53201 U.S.A. 相似文献
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