Hydrographische Bibliographie     

F. Model  H. Mädler 《Ocean Dynamics》1969,22(6):271-291

  相似文献   

Hydrographische Bibliographie     

F. Model  H. Mädler 《Ocean Dynamics》1969,22(3):120-144

  相似文献   

Hydrographische Bibliographie     

Fr. Model  H. Mädler 《Ocean Dynamics》1968,21(1):27-48

  相似文献   

Ausgleichung des tschechoslowakischen Gravimeternetzes     

Lubomír Träger 《Studia Geophysica et Geodaetica》1968,12(3):246-258

  相似文献   

Statistical characteristics of the vertical ozone distribution in mid-latitudes     

Spänkuch  D.  Döhler  W.  Kubasch  H. 《Pure and Applied Geophysics》1973,106(1):1208-1218

Summary The correlation matrix for the vertical ozone distribution and the temperature-ozone cross-correlation matrix, which was calculated from ozone soundings made over Berlin between 1967 and 1970, the statistical structure of the vertical ozone profile (correlation coefficients, average profiles, average standard deviation, relative variability) was derived for the three ozone seasons. The partial ozone pressure does not at all heights follow a normal distribution (e. g. at tropopause level). Generally, the correlation between tropospheric and stratospheric ozone is rather poor. In some layers the highest correlation coefficients, i.e. –0.3 and +0.4, occur in autumn (October to December) and in winter and spring (January to April). The correlation between the ozone amounts of various stratospheric layers is distinct in autumn, less distinct in summer (May to September) and entirely missing from January to April. Conspicuous cross-correlations between temperature and ozone have been found for all three seasons. a) With a negative correlation between tropospheric temperature and middle tropospheric to middle stratospheric ozone (maximum up to –0.8); b) with a rather strong positive correlation between the ozone amount and the temperature in the lower stratosphere (maximum up to +0.84); c) with a positive correlation between the ozone amount of the middle stratosphere and the temperature of the middle stratosphere (maximum up to +0.8). The highest correlation coefficients occur in autumn.  相似文献   

Complexing capacity of the nutrient medium and its relation to inhibition of algal photosynthesis by copper     

Dr. René Gächter  Ken Lum-Shue-Chan  Y. K. Chau 《Aquatic Sciences - Research Across Boundaries》1973,35(2):252-261

The toxic effect of copper on phytoplankton production is investigated in waters having different complexing capacities. It is demonstrated that a water’s complexing capacity does not guarantee that an equivalent amount of copper could be tolerated without adversely affecting algal production. Possible explanations for these findings are offered and discussed. It is deduced that ionic copper probably is already toxic to planktonic algae at concentrations of about 10^?10 mole/l.  相似文献   

Über die echographische Aufzeichnung des Verhaltens von Meeresfischen während der Sonnenfinsternis vom 30. Juni 1954     

Friedrich Schüler 《Ocean Dynamics》1954,7(3-4):140-143

Summary Echo records from the Atlantic west of the Faroe Islands are presented which, for the first time, give evidence of the influence exerted by day on the vertical movement of pelagic fishes by a considerable reduction of luminous intensity (solar eclipse). This phenomenon corresponds with the fact well known since some years from investigations in the North Sea which prove that by night pelagic fishes move in a vertical direction according to the variation in luminous intensity.

---

Sur des enregistrements ultra-sonores caractérisant le comportement des poissons pélagiques pendant l'éclipsé de soleil au 30 juin 1954

Résumé On présente des enregistrements ultra-sonores faits en océan Atlantique à l'ouest de l'archipel de Færoé. Ces enregistrements font, pour la première fois, preuve de l'influence exercée de jour sur le mouvement vertical des poissons pélagiques par une réduction sensible de l'intensité lumineuse (éclipse de soleil). Ce phénomène correspond avec le fait bien connu depuis quelques ans par des recherches dans la mer du Nord. Suivant ces recherches, les poissons pélagiques se meuvent nuitamment dans la direction verticale suivant la variation de l'intensité lumineuse.

  相似文献   

Neuere Veröffentlichungen     

H. Ermel  W. Kuntze  Fr. Model  F. Schüler 《Ocean Dynamics》1955,8(2):77-79

Ohne Zusammenfassung  相似文献   

Age and origin of magmatism along the Cenozoic Red River shear belt, China   总被引：28，自引：0，他引：28  

Lian-Sheng Zhang  Urs Schärer 《Contributions to Mineralogy and Petrology》1999,134(1):67-85

To decipher the geodynamic significance of Cenozoic magmatism along the Red River shear belt, geochemical analyses, U-Pb and Rb-Sr dating, and Pb-Sr-Nd isotope tracing were undertaken. Zircon, monazite, titanite, and a Ti-U-oxide from foliated granitoid intrusions in the shear belt gneisses yield U-Pb emplacement ages of 33.1?±?0.2 (2σ), 31.9?±?0.3, 25.8?±?0.2 and 24.7?±?0.2?Ma, and an age of 35.0?±?0.3?Ma was obtained for the roughly 100?km long, adjacent Jinping (Phan Si Pang) alkali granite. Together with our previous data the new ages suggest that magmatism and left-lateral strike-slip movements occurred coevally during latest Eocene–Oligocene times from 33 to 22?Ma. The Rb-Sr dating of muscovite and biotite from the northernmost gneisses indicates that cooling to 500?°C occurred at 52.6?±?1.1?Ma, pre-dating the onset of magmatism, whereas further cooling to 300?°C took place at 28.9?±?0.6. This shows that unroofing in the north took place almost 9?million years earlier than in the central gneiss segments of the shear zone. Geochemical data substantiate two types of magmas: (1) amphibole-bearing intrusions of alkaline trend which are derived from sources with I_sr: 0.7065–0.7089 and _i ^Nd: ?3.7 to ?6.6; (2) leucogranitic layers and bodies having I_sr: 0.7084–0.7354 and _i ^Nd: ?3.3 to ?13.4. The former type of intrusion is found in both the gneisses and the adjacent unmetamorphosed cover rocks, whereas leucogranites are restricted to the shear belt gneisses. Source signatures of the alkaline intrusions lie adjacent to the those of OIB, plotting at the lower end of the Mantle Array. Contamination of these melts by continental material seems to be very limited. On the other hand, the leucogranitic layers are essentially crustal derived but none of the them has country rock isotope signatures, requiring melting of crust different from the actually exposed gneisses. Magma sources similar to those of ocean island basalt indicate magmatism to involve melting of light rare earth element and large ion lithophile element enriched mantle domains, most likely present in the lithosphere underneath the region. Since lithospheric thickening or subduction can be ruled out to produce both types of magmas, the presence of an important thermal anomaly is required, which is coevally active with left-lateral strike-slip shear. Adiabatic decompression and melting within the rising anomaly is the most plausible mechanism to produce the mantle magmas, which successively migrate through the crust to induce anatectic melting at 20–15?km crustal depth. Alkaline magmas largely dominate the volume of magmatism along the belt, being continuously present in the shear zone for millions of years. Such lubrication potentially explains how very large amounts of displacement can be absorbed in surprisingly narrow shear zones such as the Red River belt, possibly also playing a rôle for where and when zones of plate-scale lateral extrusion develop.  相似文献   

Neuere Veröffentlichungen     

F. Model  H. Mädler 《Ocean Dynamics》1968,21(5):215-240

  相似文献