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  • Other Sources  (16)
  • Springer  (7)
  • Inst. f. Geophys., Ruhr-Univ. Bochum  (5)
  • Blackwell Publishing Ltd
  • Institute of Physics
  • International Union of Crystallography
  • Nature Publishing Group
  • 2020-2023
  • 1990-1994
  • 1980-1984  (16)
  • 1981  (10)
  • 1980  (6)
Collection
Source
Keywords
Publisher
Years
  • 2020-2023
  • 1990-1994
  • 1980-1984  (16)
Year
  • 1
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    Seismic Waves and Sources (1981)
    Springer
    In:  New York, 1108 pp., Springer, vol. 96, pp. 225, (ISBN 0-471-95596-5)
    Details
    Publication Date: 1981
    Keywords: FROTH ; RUB ; GMG ; 3.15.80 ; Textbook of geophysics ; Seismology ; Waves ; Wavelet processing ; SModelling ; Dislocation ; Elasticity theory of dislocations ; Source
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Registrierungen seismischer Ereignisse im Ruhrgebiet 1980 (1981)
    Inst. f. Geophys., Ruhr-Univ. Bochum
    In:  Wissenschaftl. Veröffentl. (Reihe B), Hrsg. H.-P. Harjes, Atlanta, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 10, no. PL-TR-91-2127, pp. 1219-1222
    Details
    Publication Date: 1981
    Keywords: BUG ; ERDSTOSS (see also rockburst and Gebirgsschlag) ; Mining geophysics ; GEBIRGSSCHLAG (see also rockburst and Erdstoss) ; Earthquake catalog ; Rock bursts (see also ERDSTOSS and GEBIRGSSCHLAG) ; Local earthquakes
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Die Magnetisierung der ozeanischen Kruste Ein Beitrag zum Vine-Matthews-Modell nach Ergebnissen mariner Tiefbohrungen (1981)
    Inst. f. Geophys., Ruhr-Univ. Bochum
    In:  Dissertation, Berichte, Bochum, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 10, no. 9, pp. 1109-1111
    Details
    Publication Date: 1981
    Keywords: Geomagnetics ; Plate tectonics ; Borehole geophys.
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Condensed Matter; Magnetic Properties. Magnetic and Other Properties of Oxides and Related Compounds Part b: Spinels, Fe Oxides and Fe-Me-O Compounds (1980)
    Springer
    In:  Berlin, Springer, vol. III/12, Supplement to III/4, no. XVI:, pp. 1-14, (ISBN 0-87590-299-5 (soft cover))
    Details
    Publication Date: 1980
    Keywords: Handbook of geophysics ; Handbook of physics ; Handbook of mineralogy
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Piezoelektrische Meßtechnik (1980)
    Springer
    In:  Dordrecht, IX+266 pp., Springer, vol. 3, no. ALEX(01)-FR-77-01, AFTAC Contract F08606-76-C-0025, pp. 329, (ISBN 1-903544-06-8)
    Details
    Publication Date: 1980
    Keywords: SEModelling ; Instruments ; Laboratory measurements
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    Geschwindigkeitsuntersuchungen am Falkenberger Granit (1981)
    Inst. f. Geophys., Ruhr-Univ. Bochum
    In:  Diplomarbeit, Rome, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 10, no. 13, pp. 1431-1434, (ISBN 0 08 042822 3)
    Details
    Publication Date: 1981
    Keywords: Velocity ; Physical properties of rocks ; Laboratory measurements ; Instruments ; Wohrl
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    BIBLIOGRAPHY SEISMOLOGY
  • 7
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    Modellseismische Untersuchungen über den Einfluß von Bergmitteleinlagerungen in tektonisch ungestörten und gestörten Kohleflözen auf die Ausbreitung von Rayleigh Flözwellen (1981)
    Inst. f. Geophys., Ruhr-Univ. Bochum
    In:  Diplomarbeit, Tokyo, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. C 560, 183 pp., no. 29, pp. 1321-1323, (ISBN 3-933346-037)
    Details
    Publication Date: 1981
    Keywords: SEModelling ; Channel waves ; Mining geophysics ; Rayleigh waves ; Kuhbach
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    BIBLIOGRAPHY SEISMOLOGY
  • 8
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    Untersuchungen von Bruch- und Scherprozessen im Granit und Serpentinit bei hohen Drücken und Temperaturen (1981)
    Inst. f. Geophys., Ruhr-Univ. Bochum
    In:  Dissertation, Berichte, Houston, Inst. f. Geophys., Ruhr-Univ. Bochum, no. 10, pp. 103-155
    Details
    Publication Date: 1981
    Keywords: Stress ; cracks and fractures (.NE. fracturing) ; Fracture ; Laboratory measurements
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    BIBLIOGRAPHY SEISMOLOGY
  • 9
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    Relative departures in July temperatures in northern Canada for the past 6,000 yr (1981)
    Nature Publishing Group
    In:  Nature, 289 (5794). pp. 164-167.
    Details
    Publication Date: 2016-04-11
    Description: There has been concern about recent temperature trends and the future effects of CO2 concentrations in the atmosphere1,2; but instrumental records only cover a few decades to a few centuries and it is essential that proxy data sources, such as pollen spectra from peats and lake sediments, be carefully interpreted as climate records. Several workers have shown statistically significant associations between the modern pollen rain and climatic parameters, an approach that by-passes the recognition of pollen/vegetation units. Statistically defined equations that associate abiotic and biotic elements are called transfer functions. We report here on the application of transfer function equations to nine middle and late Holocene peat and lake sediment sequences from northern Canada (Fig. 1).
    Type: Article , PeerReviewed
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  • 10
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    Particulate organic carbon flux in the oceans-surface productivity and oxygen utilization (1980)
    Nature Publishing Group
    In:  Nature, 288 (5788). pp. 260-263.
    Details
    Publication Date: 2016-03-01
    Description: Organic detritus passing from the sea surface through the water column to the sea floor controls nutrient regeneration, fuels benthic life and affects burial of organic carbon in the sediment record. Particle trap systems have enabled the first quantification of this important process. The results suggest that the dominant mechanism of vertical transport is by rapid settling of rare large particles, most likely of faecal pellets or marine snow of the order of 〉200 μm in diameter, whereas the more frequent small particles have an insignificant role in vertical mass flux4–6. The ultimate source of organic detritus is biological production in surface waters of the oceans. I determine here an empirical relationship that predicts organic carbon flux at any depth in the oceans below the base of the euphotic zone as a function of the mean net primary production rate at the surface and depth-dependent consumption. Such a relationship aids in estimating rates of decay of organic matter in the water column, benthic and water column respiration of oxygen in the deep sea and burial of organic carbon in the sediment record.
    Type: Article , PeerReviewed
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  • 11
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    An Unusual Polynya in an Arctic Fjord (1980)
    Springer
    In:  In: Fjord Oceanography. , ed. by Freeland, H. J., Farmer, D. M. and Levings, C. D. Springer, New York, pp. 299-304.
    Details
    Publication Date: 2016-01-12
    Description: M. Dunbar (1957) called attention to the existence of a small circular polynya about 50 m in diameter in Cambridge Fiord in northern Baffin Island for which there was no obvious explanation. Other small polynyas are known in arctic fjords which are usually the result of turbulent mixing in areas of strong currents (Sadler 1974), but Cambridge Fiord is 100 km long, its tidal range is small, and the polynya is situated within 300 m of the delta face at the head of the fjord so that strong turbulence is very unlikely. The annual reappearance of the polynya in late winter is confirmed by a series of aerial survey photographs taken by the Royal Canadian Air Force between 1952 and 1957 and also by reports from Inuit hunters from Pond Inlet. It is first seen within about two weeks of 15 March appearing in exactly the same position each year as a circle with a diameter of about 40 m. Over a period of about a week, a lead extends from the polynya to the shore and open water is visible in the tide crack for several hundred metres either side of the shore end of the lead. The lead, unlike the polynya, changes its position from year to year, but once formed it remains fixed until general break-up (Figure 1).
    Type: Book chapter , NonPeerReviewed
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  • 12
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    Sulfate assimilation in Rhodopseudomonas globiformis (1981)
    Springer
    In:  Archives of Microbiology, 130 (3). pp. 234-237.
    Details
    Publication Date: 2016-01-21
    Description: Rhodopseudomonas globiformis is able to grow on sulfate as sole source of sulfur, but only at concentrations below 1 mM. Good growth was observed with thiosulfate, cysteine or methionine as sulfur sources. Tetrathionate supported slow growth. Sulfide and sulfite were growth inhibitory. Growth inhibition by higher sulfate concentrations was overcome by the addition of O-acetylserine, which is known as derepressor of sulfate-assimilating enzymes, and by reduced glutathione. All enzymes of the sulfate assimilation pathway. ATP-sulfurylase, adenylylphosphate-sulfotransferase, thiosulfonate reductase and O-acetylserine sulfhydrylase are present in R. globiformis. Sulfate was taken up by the cells and the sulfur incorporated into the amino acids cysteine, methionine and homocysteine. It is concluded, that the failure of R. globiformis to grow on higher concentrations of sulfate is caused by disregulation of the sulfate assimilation pathway. Some preliminary evidence for this view is given in comparing the activities of some of the involved enzymes after growth on different sulfur sources and by examining the effect of O-acetylserine on these activities.
    Type: Article , PeerReviewed
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  • 13
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    Glacial and interglacial wind regimes over the eastern subtropical Atlantic and North-West Africa (1981)
    Nature Publishing Group
    In:  Nature, 293 (5829). pp. 193-196.
    Details
    Publication Date: 2016-09-02
    Description: Analysis of aeolo-marine dust deposits in the subtropical eastern Atlantic enables the strength of the major wind patterns during the late Quaternary to be evaluated and gives an insight into the climate of North Africa.
    Type: Article , PeerReviewed
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  • 14
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    On simultaneous measurements with rotor, wing and acoustic current meters, moored in shallow water (1980)
    Springer
    In:  Deutsche Hydrographische Zeitschrift, 33 (1). pp. 1-18.
    Details
    Publication Date: 2019-09-23
    Description: In two closely spaced moorings in the Kiel Bight, four different current meterstwo rotor current meters (Aanderaa and Vector averaging), an acoustic current meter (designed by Gytre), and a pendulum current meter (designed by Niskin) were moored for 22 days. The Vector averaging current meter (VACM) was used as reference instrument on one mooring with the floatation at 7 m depth. The floatation of the second mooring was at 5 m depth in the first 17 days of the experiment, but in 2.7 m depth in the last 5 days to make their mooring more effected by surface waves. The Niskin wing current meter was most effected by wave-induced mooring motion. The Gytre instrument showed the smallest surface-wave effects. The vector variances of this instrument in 7.4 m depth on the surface-wave effected mooring and those of the VACM in 10 m depth on the reference mooring were about equal.
    Type: Article , PeerReviewed
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  • 15
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    The first fossil cephalopod statoliths to be described from Europe (1980)
    Nature Publishing Group
    In:  Nature, 287 (5783). pp. 628-630.
    Details
    Publication Date: 2016-11-15
    Description: Statoliths of cephalopods are small, hard calcareous stones which lie within the cartilaginous skulls of octopods, sepioids and teuthoids1. Fossil statoliths, clearly belonging to genera which are alive today, have previously been described from 11 Cenozoic deposits spanning from the Eocene to the Pleistocene in North America2–5. Such statoliths are of particular interest because they provide a means of studying the evolution of living cephalopod groups which have no calcareous shells, including the cosmopolitan and numerous teuthoids and octopods. Here, the first cephalopod statoliths to be recognized in European deposits are described and identified as Loligo sp. They are compared with the North American fossil Loligo species and statoliths removed from the two living Loligo species of Europe.
    Type: Article , PeerReviewed
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  • 16
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    Biology of Octopus vulgaris off the east coast of South Africa (1981)
    Springer
    In:  Marine Biology, 65 (1). pp. 1-12.
    Details
    Publication Date: 2021-05-05
    Description: The biology of Octopus vulgaris Cuvier inhabiting subtropical littoral reefs off the east coast of South Africa was investigated. Analyses of stomach contents and lair middens revealed that the mussel Perna perna was the dominant food organism. Growth rate of captive individuals was higher than has previously been recorded but food conversion was lower. Females became sexually mature at 900 g which is estimated to be attained in 3.6 months. Males became sexually mature at 400 g, which is estimated to be attained after 3 months. Results indicate that females live for 9–12 months and have the potential to reach 4 000 g in 240 d while males live for about 12–15 months and have the potential to achieve 4 000 g in 290 d. Mating and breeding occurred throughout the year although evidence for the seasonal migration of females is presented and discussed in relation to breeding and feeding behaviour.
    Type: Article , PeerReviewed
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