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  • Other Sources  (121)
  • Articles (OceanRep)  (116)
  • Bibliography on Seismology  (5)
  • AMS (American Meteorological Society)  (60)
  • Wiley  (58)
  • Inst. f. Geophys., Ruhr-Univ. Bochum
  • 1995-1999  (121)
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  • Other Sources  (121)
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Year
  • 1
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    Wiley
    In:  New York - 2nd ed., 372 pp., Wiley, vol. 1, pp. 225, (ISBN 0-471-32192-3)
    Publication Date: 1999
    Keywords: Textbook of geography ; Textbook of informatics ; GIS
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  • 2
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    Wiley
    In:  Chichester, 292 pp., Wiley, vol. 45, pp. ii + 37 pp. + 35 figs. + 4 tabs., (ISBN 0-471-95596-5)
    Publication Date: 1998
    Keywords: Textbook of informatics ; FTN90 ; Gegenueberstellung ; der ; beiden ; Programmiersprachen ; PIK ; Potsdam
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  • 3
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    Inst. f. Geophys., Ruhr-Univ. Bochum
    In:  Dissertation, Berichte Reihe A, Berlin, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. C 560, 183 pp., no. 43, pp. 3-35, (ISBN 3-933346-037)
    Publication Date: 1995
    Keywords: Borehole geophys. ; Applied geophysics ; NOISE ; Vertical seismic profiling ; Seismics (controlled source seismology) ; MWD ; LWD
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  • 4
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    Inst. f. Geophys., Ruhr-Univ. Bochum
    In:  Diss., Berichte, Reihe A, Hamburg, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. C 560, 183 pp., no. 49, pp. 333-342, (ISBN 3-933346-037)
    Publication Date: 1996
    Keywords: cracks and fractures (.NE. fracturing) ; Modelling ; Rock mechanics ; Fracture ; Boundary Element Method ; Griffith
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  • 5
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    Inst. f. Geophys., Ruhr-Univ. Bochum
    In:  Dissertation, Berichte Reihe A, Ostende, Belgium, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 10, no. 45, pp. 44
    Publication Date: 1996
    Keywords: Three dimensional ; Modelling ; Tomography ; Surface waves ; Applied geophysics
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  • 6
    Publication Date: 2017-07-18
    Description: 1 Zonation is often seen in environments with a strong physico-chemical gradient, such as salt marshes. It has been hypothesized that plant species are limited in their distribution by abiotic factors towards the more extreme end of the gradient, and by competition towards the more favourable end. Invasion of the native clonal grass genus Elymus in many Wadden Sea marshes may be due to increasing atmospheric nitrogen input into a nitrogen-limited environment. However, at Thmlauer Bay, Germany, Elymus athericus does not occur in lower salt marsh communities that are dominated by a dwarf shrub (Atriplex portulacoides). We therefore hypothesized that at this site the downslope (= more extreme) distributional boundary of E. athericus is a result of competition with A. portulacoides rather than of physiological limits. 2 A factorial experiment was set up to investigate the effects of removal of each competitor and fertilization. The reciprocal effects of the species on each other were measured in terms of vegetation cover and above-ground biomass. The impact of the tidal regime on plant zonation was investigated by calculating inundation frequencies at the boundary between the two plant populations from water level recordings. 3 Elymus athericus extended its distribution into the lower salt marsh when A. portulacoides was removed. The latter increased in cover but not in biomass after the removal of E. athericus. Neither species showed a response to nitrogen fertilization. The boundary between the two species in the control plots varied considerably in elevation and inundation frequency. 4 The lower distributional boundary of E. athericus can be interpreted as the result of competition with A. portulacoides. Improvement of nitrogen availability in concentrations of the same order of magnitude as annual atmospheric input had no detectable effect on plant zonation and growth. Elevation and inundation frequency were not strictly correlated with plant zonation.
    Type: Article , PeerReviewed
    Format: text
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  • 7
    Publication Date: 2017-07-07
    Description: A new species of the holopodid genus Cyathidium was found on rocks off Grande Comore in a depth of around 200 m. Based on external morphology of resting animals, the new species Cyathidium plantei sp. n is described, with emphasis on comparison to the only other extant species (C. foresti) as well as to the four extinct representatives of the genus. Concerning morphological characters, the new species is almost identical to the Cretaceous C. depressum. A cladistic analysis of the entire family, including the genus Holopus, shares a peculiar pattern of bending of the arms, which in principle is an apomorphic character of the family and in detail shows variations within the family. In addition, stratigraphic data are used for the determination of the evolutionary direction. This analysis reveals that the two recent species are closely related to each other, and to the fossil C. depressum. from which the entire family is probably derived.
    Type: Article , PeerReviewed
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  • 8
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    Wiley
    In:  In: Marine botany. Wiley, New York, NY, pp. 45-61. 2. Ed. ISBN 0-471-19208-2
    Publication Date: 2017-07-07
    Description: The chapter gives an overview of marine plant relationships with their environment, wich is called ecology. The overview is a requirement to understanding the biology of marine plants because they do not live as isolated units. Consideration will be given to basic tenets of marine ecology including levels of organization (Populations to ecosystems), processes of community development (succession, energy transfer), strategies (evolutionary, plant responses), biological iunteractions (forms of symbiosis, competition, predation), and growth (rates and responses).
    Type: Book chapter , NonPeerReviewed
    Format: text
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  • 9
    Publication Date: 2018-04-26
    Description: A protein unique to phosphorus stress observed in Dunaliella tertiolecta Butcher was studied in the context of phosphate‐limited cell physiology and is a potential diagnostic indicator of phosphate deficiency in this alga. Cells were grown over a range of limited, steady‐state growth rates and at maximum (replete) and zero (phosphate‐starved) growth rates. The stress protein, absent in nutrient‐replete cells, was produced under all steady‐state phosphate‐limited conditions and increased in abundance with increasing limitation (decreasing growth rate). Cellular carbon: phosphorus ratios and the maximum uptake rate of phosphate (Vm) increased with increasing limitation, whereas the ratio of chlorophyll a: carbon decreased. Alkaline phosphatase activity did not respond to limitation but was measurable in starved, stationary‐phase cells. Fv/Fm, a measure of photochemical efficiency, was a nonlinear, saturating function of p, as commonly observed under N limitation. The maximum Fv/Fm of 0.64 was measured in nutrient‐replete cells growing at μmax, and a value of zero was measured in stationary‐phase starved cells. When physiological parameters were compared, the P‐stress protein abundance and Fv/Fm were the most sensitive indicators of the level of deficiency. The stress protein was not produced under N‐ or Fe‐limited conditions. It is of high molecular weight (〉200) and is associated with internal cell membranes. The stress protein has several characteristics that make it a potential diagnostic indicator: it is 1) unique to phosphorus limitation (i.e. absent under all other conditions), 2) present under limiting as well as starved conditions, 3) sensitive to the level of limitation, and 4) observable without time‐course incubation of live samples.
    Type: Article , PeerReviewed
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  • 10
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    AMS (American Meteorological Society)
    In:  Journal of Atmospheric and Oceanic Technology, 12 (4). pp. 923-934.
    Publication Date: 2020-08-04
    Description: A method to derive salinity data from RAFOS float temperature and pressure measurements is described. It is based on evaluating the float's in situ density from its mechanical properties and in situ pressure and temperature data. The salinity of the surrounding water may then be determined, assuming that the float has reached equilibrium with its environment. This method, in comparison with the possible use of floatborne salinity cells, has the advantage of being both cost and energy neutral and highly stable in the long term. The effect on the estimated salinity of various parameters used in the determination of the float's in situ density is discussed. Results of seven RAFOS Boats deployed in the Brazil Basin are compared with corresponding CTD data to estimate the magnitude of these errors. At present, an accuracy of 0.3 psu is achieved. The accuracy may be improved to 0.02 psu by referring the float's calculated density to a reference density established by a CTD cast at the time of launch. Results from five floats deployed in the heterogeneous water masses of the Iberian Basin are compared with the corresponding CM casts to demonstrate the variability and interpretation of p-T-S float datasets from different areas.
    Type: Article , PeerReviewed
    Format: text
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