Hydrogeology of karstic terrains: International Union of Geological Sciences,series B,no. 3.) Edited by A. Burger and L. Dubertret for IAH Commission for Hydrogeology of Karst. International Association of Hydrogeologists, 1975, 190 pp., US $ 20.00     

Frank Dixey 《Journal of Hydrology》1976,30(3):303

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Pressure dependence of the thermal Grüneisen parameter,with application to the earth's lower mantle and outer core     

Roderick D. Irvine  Frank D. Stacey 《Physics of the Earth and Planetary Interiors》1975,11(2):157-165

By considering high-temperature (classical) thermal oscillations of atoms in certain simple crystal structures with purely central interatomic forces, the treatment of anharmonic oscillations is generalised to random three-dimensional motion, yielding the Vashchenko and Zubarev relationship for the Grüneisen ratio γ at any pressure. If one-dimensional atomic oscillations only are considered the equation reduces to the Dugdale-MacDonald expression. To account for non-central forces additional terms must be introduced, giving: where f = 0 for purely central forces. Calculations of f in terms of the Poisson ratio for different crystal structures have not been made, but for many materials the central-force approximation suffices. This is believed to be true both for the outer core $\text{(}\text{γ}\text{≈1.4)}$ and for the close-packed structures of the lower mantle $\text{(}\text{γ}\text{≈1.0)}$. For the upper mantle non-central atomic forces are important and we have no estimate of ($\text{γ}$ independently of laboratory values for plausible minerals which suggest γ ≈ 0.8.  相似文献   

Anhysteretic remanent magnetization (ARM) in magnetite grains     

David E. W. Gillingham  Frank D. Stacey 《Pure and Applied Geophysics》1971,91(1):160-165

Summary ARM has been measured in a range of inducing, steady fields up to 50 oersteds and for 6 sizes of magnetite grains with average diameters 5 m to 174 m. For all sizes a slight non-linearity of ARM with inducing field was found, apparently comprising a non-linear contribution independent of grain size plus a linear contribution which increased with decreasing grain size. In the largest grains induced ARM agreed well with multidomain grain theory. Relative enhancement of ARM in smaller grains is comparable to the enhancement of thermoremanence and therefore appears to indicate a pseudosingle domain contribution to ARM in small grains. However the observations allow an alternative explanation in terms of more extreme dimension ratios in the smaller grains. Presentation of the equations for multidomain ARM and TRM using observed instead of intrinsic susceptibilities makes it appear that the inadequacy of multidomain theory (and consequent necessity for pseudo-single domain theory) are less serious than has been supposed.  相似文献   

A Hydrogeophysical Survey Using Remote-Sensing Methods from Kawaihae to Kailua-Kona, Hawaii     

William M. Adams  Frank L. Peterson  Surendra P. Mathur  Larry K. Lepley  Clifton Warren  Richie D. Huber 《Ground water》1971,9(1):42-50

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C. Bernhardt: Flüssigkeiten und Zusatzstoffe für die Sedimentationsanalyse. Mitteilung Nr. 253, Forschungsinstitut für Aufbereitung der Akademie der Wissenschaften der DDR, 92 Freiberg,Straße des Friedens 40, 25 S., 7,00 M     

H. J. Walther 《洁净——土壤、空气、水》1974,2(5):451-451

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The origin of thermoremanent magnetization: Contribution of pseudo-single-domain magnetic moments     

David J. Dunlop  Frank D. Stacey  David E.W. Gillingham 《Earth and Planetary Science Letters》1974,21(3):288-294

The pseudo-single-domain (PSD) intensity and stability of thermoremanent magnetization (TRM) in multidomain magnetite grains 0.05–15 μm in size are attributed to residual magnetic moments not removed by demagnetization. Barkhausen discreteness in domain wall positions is a possible source of such moments, but the observed grain size and applied field dependences of TRM in the lower PSD range are more convincingly explained by a new theory (F.D. Stacey and S.K. Banerjee, 1974) in which the moments of domain walls and the surface terminations of domain walls play a central role. The magnitudes of PSD moments and the average number of moments per grain required by this theory are deduced from low-field (0–25 Oe) TRM measurements on magnetite grains of controlled sizes between 0.04 and 0.22 μm. The predicted maximum PSD moment is about equal to the saturation moment in grains ≤ 0.1 μm in size but is only 10% of the saturation moment in 0.22-μm grains. Since blocking temperature and hysteresis data independently suggest two-domain structure in 0.22-μm grains and wall-like domain structure in smaller grains, the predicted PSD moments are quantitatively reasonable.  相似文献   

Intensive infiltrometer studies on a plowed big sagebrush site     

Gerald F. Gifford  Frank E. Busby 《Journal of Hydrology》1974,21(1):81-90

Intensive infiltrometer studies were made over a 4-year period on a plowed big sagebrush (Artemisia tridentata) site in southern Idaho. Results of the study indicate there was a natural decay in absorptive capabilities of surface soils due to the plowing treatment. The apparent result of grazing was not to reduce the minimal infiltration capacities measured on the respective site, but rather to eliminate seasonal trends so that infiltration rates were at the low end of the scale throughout the year. Grazing did not increase sediment production potentials beyond the increases expected as a result of mechanical disturbance associated with plowing. Attempts at predicting infiltration rates and potential sediment production indicated that easily measured soil cover characteristics do not adequately reflect the potential (actual) hydrologic performance of a big sagebrush site which has been grossly modified by activity such as plowing or grazing.  相似文献   

Orogene und kratogene Metallogenese     

Prof. Dr. Walther E. Petrascheck 《International Journal of Earth Sciences》1973,62(3):617-626

The typical features of metallogenic provinces in the orogenic belts are described and explained in the sense of the modern plate tectonics. Some phenomena, however, are not in agreement with the scheme of “consuming margins” — particulary the timing of the magmatic-tectonic cycles and the assembly of ore metals in mountain chains. Therefore the older assumption of a synorogenic anatexis of the continental crust has to be maintained. The metals of the continental crust got combined with the volatiles and with the metals of the basaltic magma to form ore deposits. The Alpine-Mediterranean metallogenesis seems to be the result of repeated and interfering subduction (producing deposits of Cu, Fe, Cr) and palingenesis (producing deposits of Pb-Zn, Au, Ag etc.) in Cretaceous and in Tertiary time. In the cratonic areas, three types of metallogenic provinces can be distinguished: Huge lakkolithes of liquid basic mantle magma with Cr, Ni, Cu, Pt — areas of granitization with a haphazard distribution of different ores — and the simple stratiform deposits in the stable platform cover; the latter as well as the small deposits along rifts and separating margins can best be explained as mobilisates created by heat flow and some mantle volatiles.  相似文献   

Interference of oil spill emulsifiers with gas chromatography     

Oliver C. Zafiriou  John Myers  Frank Freestone 《Marine pollution bulletin》1973,4(6):87-88

Several commercially available spill control agents interfere with gas chromatographic correlation of spilled oils with suspected sources. The effects of four such products are presented. Two of these interfere seriously. One is removable by a simple clean-up procedure, and the other is not removable in principle. In favourable cases, its interference may be minimized by extrapolation. Anticipated interference with other analytical methods is surveyed.  相似文献   

Comments on “lunar seismograms for LM and S-IVB impacts interpreted as modulation mirage”: by E. Strick,earth and planetary science letters 13 (1972) 23–31.     

Gary V. LathamMaurice Ewing  Frank PressGeorge Sutton  James DormanYosio Nakamura  Nafi ToksozDavid Lammlein  Fred Duennebier 《Earth and Planetary Science Letters》1972

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