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

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Compaction of Argillaceous Sediments. (Developments in Sedimentology, 16): Herman H. Rieke III and George V. Chilingarian. Elsevier,Amsterdam, 1974, 424 pp., 217 ill., 49 tables,Dfl. 85.00     

E. Nickel 《Sedimentary Geology》1974,12(4):298-300

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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

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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   

Procedures involving the I.M.A. Commission on New Minerals and Mineral Names,and guidelines on mineral nomenclature     

Dr. E. H. Nickel  Dr. J. A. Mandarino 《Mineralogy and Petrology》1987,37(2):157-179

Summary An author wishing to introduce a new mineral name into the literature, or to redefine, discredit or rename an existing mineral, must obtain prior approval of the I.M.A. Commission on New Minerals and Mineral Names. This paper outlines the procedure to be followed in the preparation and submission of a proposal for approval, and describes how such proposals are handled by the Commission. The paper also reports decisions on nomenclature made by the Commission, and gives general guidelines on mineral nomenclature. Lists of mineral names discredited by the Commission, and of recently-approved rare-earth mineral names are appended.

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Die Arbeitsweise der Kommission für neuere Minerale und Mineralnamen der IMA und Richtlinien für die Nomenklatur von Mineralien

Zusammenfassung Autoren, die einen Mineralnamen in die Literatur einführen oder ein existierendes Mineral neu definieren, ausscheiden oder neu benennen wollen, müssen vorher die Zustimmung der IMA Kommission für neue Minerale und Mineralnamen einholen. In diesem Beitrag ist die korrekte Vorgangsweise für die Vorbereitung und Einreichung eines Antrages zur Genehmigung durch die IMA/CNMMN dargestellt. Außerdem wird beschrieben, wie solche Anträge durch die Kommission behandelt werden. Zudem werden Entscheidungen zu Nomenklatur-Fragen, die die Kommission getroffen hat und allgemeine Richtlinien zur Nomenklatur von Mineralien gegeben. Der Appendix enthält Listen von Mineralnamen die die Kommisssion für ungültig erklärt hat, sowie Listen von erst vor kurzem angenommenen Namen von Mineralen der Seltenen Erden.

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Created versus natural coastal islands: Atlantic waterbird populations, habitat choices, and management implications     

R. Michael Erwin  David H. Allen  David Jenkins 《Estuaries and Coasts》2003,26(4):949-955

Nesting colonial waterbirds along the Atlantic Coast of the United States face a number of landscape-level threats including human disturbance, mammalian predator expansion, and habitat alteration. There have been changes from 1977 to the mid-1990s in use of nesting habitats and populations of a number of seabird species of concern in the region, including black skimmersRynchops niger Linnaeaus, common ternsSterna hirundo Linnaeaus, gull-billed ternsSterna nilotica Linnaeaus, least ternsSterna antillarum Lesson, royal ternsSterna maxima Boddaert, and sandwich ternsSterna sandvicensis Cabot. These species form colonies primarily on the following habitat types: large, sandy barrier or shoal islands, natural estuarine or bay islands (mostly marsh) man-made islands of dredged deposition materials (from navigation channels), and the mainland. Significant changes in the use of the dredged material islands have occurred for these species in New Jersey and North Carolina, but not in Virginia. Population declines and changes in bird habitat use appear to be at least partially associated with the conditions and management of the existing dredged material islands, coastal policy changes associated with creating new dredged material islands, and competing demands for sand for beach augmentation by coastal communities. As these and other coastal habitats become less suitable for colonial waterbirds, other man-made sites, such as, bridges and buildings have become increasingly more important. In regions with intense recreational demands, coastal wildlife managers need to take a more aggressive role in managing natural and man-made habitats areas and as stakeholders in the decision-making process involving dredged materials and beach sand allocation.  相似文献   

Remote Sensing Of Three-Dimensional Winds With Elastic Lidar: Explanation Of Maximum Cross-Correlation Method     

William T. Buttler  Cecilia Soriano  Jose M. Baldasano  George H. Nickel 《Boundary-Layer Meteorology》2002,103(1):173-174

Maximum cross-correlation provides a method to remotely determine highly resolved three-dimensional fields of horizontal winds with elastic lidar throughout large volumes of the planetary boundary layer (PBL). This paper details the technique and shows comparisons between elastic lidar winds, remotely sensed laser Doppler velocimeter (LDV) wind profiles, and radiosonde winds. Radiosonde wind data were acquired at Barcelona, Spain, during the Barcelona Air-Quality Initiative (1992), and the LDV wind data were acquired at Sunland Park, New Mexico (N.M.), during the Border Area Air-Quality Study (1994). Comparisons show good agreement between the different instruments, and demonstrate the method useful for air pollution management at the local/regional scale. Elastic lidar winds could thus offer insight into aerosol and pollution transport within the PBL. Lidar wind fields might also be used to nudge or improve initialization and evaluation of atmospheric meteorological models.  相似文献