Beitrag zur Bestimmung der mittleren Verweildauer von natürlichen Aerosolen; Methodik und erste Ergebnisse     

Dr. Hermann Schreiber  Dr. Fritz Woerner 《Meteorology and Atmospheric Physics》1969,18(1-2):75-86

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Der Einfluss chinesischer Spaltproduktaerosole auf den in Stuttgart-Hohenheim gemessenen radioaktiven Befall     

Paul H. Wieser  Fritz Woerner 《Pure and Applied Geophysics》1967,66(1):133-139

Zusammenfassung Am 9. Mai wurde der dritte chinesische Kernwaffenversuch durchgeführt. Als Folge konnte etwa vierzehn Tage nach dem Explosionszeitpunkt in Stuttgart-Hohenheim eine deutliche Zunahme des radioaktiven Befalls festgestellt werden. Für die gewonneuen Niederschlags-, Staub- und Luftfilterproben, sowie für ein Heisses Teilchen wurdent ^–(1+x )-Kurven gemessen, diex-Werte bestimmt und gammaspektrometrisch die Nuklidzusammensetzung untersucht. An den aufgefundenen Nukliddiskriminierungen ist bemerkenswert, dass das Heisse Teilchen eine deutliche⁹⁵Zr-⁹⁵ Nb-Anreicherung aufwies.

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Summary The results of an investigation of the deposition of nuclear weapon debris from the third Chinese test explosion are discussed.t ^–(1+x )-curves were measured and the values of the parameterx are presented. The dry and precipitation fallout samples and a hot particle were gammaspectrometrically examined. Fractionation phenomena were studied.

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Establishment of a radiation network connected to ordinary weather stations and evaluation of their observations     

Dr. Fritz H. W. Albrecht 《Pure and Applied Geophysics》1954,29(1):115-154

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Tektonische Untersuchungen am Westrand der Eifeler Nord-Süd-Zone zwischen Untermaubach und Heimbach     

Fritz Baum 《International Journal of Earth Sciences》1955,44(1):148-167

Zusammenfassung Die Abbiegung der SE-Flanke des Vennsattels zum Westrand der Eifeler N-S-Zone wird von einem Störungsbündel begleitet, das die Achsenflexur zu einem Staffelbruch fortbildete und mehrmals posthum in Tätigkeit trat. Methoden werden entwickelt, um aus der Verstellung der feintektonischen Elemente nicht sichtbare Verwerfungen zu erschließen.  相似文献   

The Application of a Diatom-based Transfer Function to Evaluate Regional Water-Quality Trends in Minnessota Since 1970     

J.M. Ramstack  S.C. Fritz  D.R. Engstrom  S.A. Heiskary 《Journal of Paleolimnology》2003,29(1):79-94

Significant population growth over the last three decades, as well as efforts to improve surface-water quality mandated by the Clean Water Act, potentially have had opposing influences on aquatic ecosystems in the U.S. Because historical data on water-quality trends are limited over this time period, we developed a diatom-based transfer function to reconstruct chloride, color, acid neutralizing capacity (ANC), total phosphorus (TP), and pH in 55 Minnesota lakes. The lakes span three different ecoregions, as well as the Twin Cities metropolitan area, and differ in their history of settlement and land use, and in surficial geology, climate, and vegetation. Lakes in the Northern Lakes and Forest ecoregion are nearly pristine, whereas those in the other regions likely are strongly affected by urban or agricultural pollutants. Reconstructions of water-chemistry trends since 1970 suggest that recent human activities have had substantial impacts in both urban and rural areas. Chloride concentrations have increased in many Metro lakes, which may be due to road salts, and phosphorus levels have been steady or rising in agricultural regions. The majority of Metro lakes show some decline in TP, although many of the changes are not statistically significant based on our reconstruction techniques. There is no evidence that atmospheric deposition of sulfate or nitrate has caused acidification or changes in trophic state for remote lakes in the northeastern part of the state.  相似文献   

Butterfly pitch-angle distributions observed by ISEE-1     

Theodore A. Fritz  Mohamed Alothman  Jyotirmoyee BhattacharjyaDavid L. Matthews  Jiasheng Chen 《Planetary and Space Science》2003,51(3):205-219

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Crustal thickening and crustal extension as controls on the evolution of the drainage network of the central Swiss Alps between 30  Ma and the present: constraints from the stratigraphy of the North Alpine Foreland Basin and the structural evolution of the Alps     

Fritz Schlunegger  Rudy Slingerl  & Albert Matter 《Basin Research》1998,10(2):197-212

The combined information about sedimentary petrography from the North Alpine Foreland Basin and structural geology from the Alps allows a qualitative reconstruction of the drainage network of the central Swiss Alps between 30 Ma and the present. This study suggests that crustal thickening and crustal thinning significantly controlled the location of the drainage divide. It also reveals the possible controls of crustal thickening/thinning on the change of the orientation of the drainage network from across-strike between 30 and 14 Ma to along-strike thereafter. Initial crustal thickening in the rear of the wedge is considered to have formed the drainage divide between north and south at 30 Ma. Because the location of crustal thickening shifted from east to west between ≈30–20 Ma, the catchment areas of the eastern dispersal systems reached further south than those of the western Alpine palaeorivers for the same time slice. Similarly, the same crustal dynamics appear to have controlled two phases of denudation that are reflected in the Molasse Basin by petrographic trends. Uplift in the rear of the wedge caused the Alpine palaeorivers to expand further southward. This is reflected in the foreland basin by increasing admixture of detritus from structurally higher units. However, tectonic quiescence in the rear of the wedge allowed the Alpine palaeorivers to cut down into the Alpine edifice, resulting in an increase of detritus from structurally lower units. Whereas uplift in the rear of the wedge was responsible for initiation of the Alpine drainage systems, underplating of the external massifs some 50 km further north is thought to have caused along-strike deviation of the major Alpine palaeorivers. Besides crustal thickening, extension in the rear of the wedge appears to have significantly controlled the evolution of the drainage network of the western Swiss Alps. Slip along the Simplon detachment fault exposed the core of the Lepontine dome, and caused a 50-km-northward shift of the drainage divide.  相似文献   

Die Erschliessung der Numerischen Wetterprognose durch die Hypothese der Lärmfreien Atmosphäre     

Fritz Herbert 《Pure and Applied Geophysics》1980,118(2):880-912

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Palynology suggests hydrocarbon mobilization in Ordovician of Kasba Tadla Basin,Morocco     

Fritz H. Cramer  Maria del Carmen R. Díez 《International Journal of Earth Sciences》1976,65(1):288-290

Palynological analysis of twelve wells shows that the metamorphic gradient of the pre-Mesozoic in the Kasba Tadla Basin of Morocco increases rapidly northwest-, southeast-, and eastward, from the center of the Basin. In the center, the Ordovician may still be releasing mobile hydrocarbons.

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Zusammenfassung Eine palynologische Untersuchung von zwölf Bohrungen zeigt, daß der thermale Gradient sich im Premesozoikum des Kasba-Tadla-Beckens in Marokko vom Zentrum des Beckens aus nach Nordwesten, Südosten und Osten schnell vergrößert. Es ist sehr wohl möglich, daß das Ordovizium des Beckenzentrums noch flüssige und gasförmige Kohlenwasserstoffverbindungen abgibt.

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Résumé L'analyse palynologique de 12 sondages montre que le gradient métamorphique du pré-Mésozoïque dans le Basin du Kasba Tadla, au Maroc, augmente à partir du centre du Bassin vers le nordouest, le sudest et vers l'est. Il est possible que l'Ordovicien de la partie centrale du Bassin produise encore des hydrocarbures liquides et gaseux.

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12 , Kasba Tadla -, - . , .

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The authors gratefully acknowledge support of this project through Grant GF-32510-X from the National Science Foundation, Washington, D.C., U.S.A.  相似文献   

Notice necrologique     

Fritz Kobold 《Journal of Geodesy》1974,48(1):5-8

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