Mikrofossilien in Süsswassersedimenten     

Prof. Dr. Erwin Rutte 《International Journal of Earth Sciences》1962,51(2):657-663

Ohne Zusammenfassung  相似文献   

On the spherical harmonics series expansion of the geopotential     

E. Groten 《Journal of Geodesy》1970,44(2):169-181

Summary The spherical harmonics development of the gravitational potential at the earth's surface and on the geoid is discussed. First, the effect of Kelvin transformations is studied; secondly, numerical information as obtained from satellite and other data is investigated. Institut für astronomische und physikalische Geod?sie, Publ. No. 66, Techn. Hochschule, Munich.  相似文献   

The celestial and terrestrial departure points and their various aspects in geodesy and astrometry     

H. J. Yan  E. Groten 《Studia Geophysica et Geodaetica》1994,38(2):117-130

Summary Based on the 127th Colloquium Report of the subgroup on coordinate frames and origins of the IAU working group on reference systems, in this paper, the possibility of taking the Celestial Departure Point as the origin of right-ascension on the instantaneous true equator is analysed in view of high-precision geodesy and astrometry. The properties and the applications of the celestial and terrestrial departure points in various aspects of practice and theory are generally reviewed. We have found that, referred to the ideal barycentric reference system proposed in the 127th IAU Colloquium, the Celestial Departure Point of a Quasi-Inertial Geocentric Equatorial Coordinate System may be a matchable origin on the moving geocentric true equator. Presented at the Seminary on Physical Geodesy, Faculty of Mathematics and Physics of the Charles' University, Prague, March 1993; Contribution to the Special Commission on Fundamental Constants of the I.A.G. On leave from Shanghai Observatory, China  相似文献   

Trace metal distribution in Baltic Sea ferromanganese concretions: inferences on accretion rates     

Erwin Suess  Djafar Djafari 《Earth and Planetary Science Letters》1977,35(1):49-54

The usually high concentrations of Zn, Pb, Cd, and Cu in the most recently accreted portions of ferromanganese nodules from the western Baltic Sea are thought to reflect increased metal input due to anthropogenic mobilization. If so, the point of increase represents a time horizon within the structure of the nodule. Similar trace metal distributions of radiometrically dated sediments from the same area suggest that the ferromanganese nodules have grown in thickness between 0.02 and 0.16 mm yr^?1. From this growth rate anthropogenic Zn flux to the nodule surface was calculated to be 80 mg m^?2 yr^?1.  相似文献   

A remark on M. Heikkinen’s paper “On the Honkasalo term in tidal corrections to gravimetric observations”, B.G. 53, 3, 239–245     

Erwin Groten 《Journal of Geodesy》1980,54(2):221-222

  相似文献   

Die physikalische und chemische Erforschung der Donau     

Grozdana Petrović  Erwin Märki 《Aquatic Sciences - Research Across Boundaries》1971,33(1):269-286

Ohne Zusammenfassung  相似文献   

On the covariance function of the terrain correction     

Erwin Groten 《Studia Geophysica et Geodaetica》1970,14(2):264-269

  相似文献   

Some geochemical aspects of sedimentary rocks in proximity of coals, sydney coalfield (upper carboniferous), cape breton island, nova scotia, canada     

Erwin L. Zodrow 《International Journal of Coal Geology》1983,2(4):299-320

Channel samples of roof and seat rocks (lutites, siltstone)) of 10 successional coals, in addition to red mudstone and calcareous siltstones, have been collected from the Sydney Coalfield, Nova Scotia. The channel samples are confined to within 150 cm above the top of coals, and to within 20 cm below the bottom of coals. Whole-rock and trace-elemental analyses are reported: wt. % of oxides of Si, Al, total Fe, Ca, Mg, Na, K, T1, Mn; and ppm's for Cu, Ni, Pb, Zn, Cr, Co, Ga, V, As, U, and Th, respectively. Th/U ratios, organic carbon and carbonate carbon of selected roof rock samples are also reported.The comparatively small stratugraphic mean variations of Na₂/K₂O and Na₂O/Al₂O₃ are open to interpretation but may indicate either a common sedimentary source, or a similar diagenetic history during basin development. Assumed is that the oxide ratios originated from detrital feldspars and clays. The probability model for uranium is Pearson's Type VII curve. The relationship between uranium (thorium) and (assumed) organic calcite in selected calcareous siltstones is examined. Stratigraphic variation of the geochemistry is assumed to be cycle-controlled, excepting probably As, V, and Cu,which under the stated conditions are amenable to mathematical modeling (of sedimentary cycles).  相似文献   

Authigenic gypsum found in gas hydrate-associated sediments from Hydrate Ridge, the eastern North Pacific   总被引：4，自引：0，他引：4  

Erwin Suess  Dirk Rickert 《中国科学D辑(英文版)》2004,47(3)

Hydrate Ridge is located at the second accretion-ary ridge along the Cascadia margin of Oregon in the eastern North Pacific (fig. 1). The Bottom Simulating Reflector (BSR) underlies the entire Hydrate Ridge[1]. The Ocean Drilling Program (ODP) in 1992 at Site 892 and the TECFLUX99 and 2000 showed that the gas hydrate occurs just beneath the thin sediment- covered surface and at the horizon of around 64 meter below seafloor (mbsf) on Hydrate Ridge[25]. The col-lision of the Juan de …  相似文献   

On the dynamical effects of a heterogeneous and compressible liquid core in the theory of Chandler wobble   总被引：1，自引：0，他引：1  

S. M. Molodensky  & E. Groten 《Geophysical Journal International》1998,135(3):723-726

The general 3-D scalar equations of motion of the liquid core (with respect to the radial components of displacements and cubic dilatation) are constructed as a superposition of the solutions of ordinary differential equations describing the dynamics of a stably stratified, heterogeneous, compressible and inviscid rotating fluid inside thin spherical layers ( Molodensky & Sasao 1995 ). The estimation of dynamical effects of a homogeneous and incompressible liquid core on the Chandler period (Groten, Lenhardt & Molodensky 1991) is generalized for the case of a heterogeneous, compressible, inviscid and neutrally stratified liquid core.  相似文献