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  • 2000-2004  (24)
  • 1990-1994  (45)
  • 1970-1974  (109)
  • 1965-1969  (71)
  • 1935-1939  (4)
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  • 1
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    Unknown
    In:  Nature, London, Army Corps of Engineers, Woodward-Clyde Consultants, vol. 239, no. 5, pp. 318-323, pp. 1013, (ISBN: 0-12-018847-3)
    Publication Date: 1972
    Keywords: Seismology ; P-waves ; earth mantle ; Inhomogeneity
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  • 2
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    In:  Nature, New York, August, vol. 226, no. 3-4, pp. 243-248, pp. 1610, (ISSN: 1340-4202)
    Publication Date: 1970
    Keywords: Plate tectonics ; rifting
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  • 3
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    In:  Nature, Warszawa, Army Corps of Engineers, Woodward-Clyde Consultants, vol. 232, no. 5, pp. 8-13, pp. 1013, (ISBN: 0-12-018847-3)
    Publication Date: 1971
    Keywords: Seismic networks ; Seismic arrays ; PIC ; ves
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  • 4
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    MIT Lincoln Lab.
    In:  Semiannual Technical Summary Report, Lexington, Mass., MIT Lincoln Lab., vol. 10, no. rapport C 20754-9.1 (2.2), pp. 38-41
    Publication Date: 1971
    Keywords: Artificial intelligence (AI) ; Pattern recognition ; Detectors ; PIC ; ves ; Seismic networks ; Seismic arrays ; Discrimination ; Data analysis / ~ processing
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  • 5
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1992-11-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daopin, S -- Cohen, G H -- Davies, D -- New York, N.Y. -- Science. 1992 Nov 13;258(5085):1161-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17789087" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1994-01-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davies, R D -- New York, N.Y. -- Science. 1994 Jan 21;263(5145):403-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17769807" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    PANGAEA
    In:  Supplement to: Jones, E J W; Laughton, Anthony S; Hill, M N; Davies, D (1976): A geophysical study of part of the western boundary of the Madeira-Cape Verde Abyssal plain. Deep Sea Research and Oceanographic Abstracts, 13(5), 889-907, https://doi.org/10.1016/0011-7471(76)90909-8
    Publication Date: 2023-08-28
    Description: The results are discussed of a geophysical survey undertaken by R.R.S. Discovery II early in 1962 in an area centred on 29° 15'N, 25° 5'W at the western extremity of the Madeira-Cape Verde Abyssal Plain. Seismic investigations show that the sediments are underlain by an intermediate layer about 2 km in thickness of velocity 4.1-5.4 km/sec which overlies a deep layer 5.2-km thick of velocity 6.3-6.8 km/sec. Refracted arrivals on the longest seismic line give a depth of 13.2 km to the M discontinuity. Magnetic results indicate that the topography of the abyssal hills in the western part of the area is probably continued eastwards as sub-bottom relief beneath the sediments of the abyssal plain. They also support the hypothesis that the intermediate seismic layer (layer 2) is composed predominantly of volcanic rocks. Examination of a well-defined magnetic anomaly over one topographic feature ("The Madcap Volcano") shows it to be composed of magnetized rocks (I = 8.4 × 10**-3 e.m.u./cm**3) having a direction of magnetization which points upwards at 25° with an azimuth of 305°. Measurements at ten heat flow stations show that the average geothermal flux in this region is 1.20 (±0.11) µcal/cm**2/sec.
    Keywords: Atlantic Ocean; D4810; D4814; Deposit type; DEPTH, sediment/rock; Description; Discovery II (1929); Event label; File name; Identification; MADCAP_62; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Photo/Video; Position; PV; Quantity of deposit; Sediment type; Substrate type; Uniform resource locator/link to image; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 26 data points
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 9 (1993), S. 0 
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. Recent experiments on soils overlying sand, chalk and limestone aquifers have shown that nitrate leaching losses can be decreased by modifying crop husbandry. Green cover during winter, if established early enough, can reduce nitrate loss. Cultivations can be timed to minimize leaching, and the advantages of irrigation (increased nitrogen offtake and smaller post-harvest soil mineral nitrogen residues) outweigh the potential disadvantage of increased leaching risk during the growing season. It is important not to over-fertilize crops. Using these techniques within farm rotations has decreased nitrate losses in small plot experiments. The next step is to measure the effects on commercial farms where the scale of operation might preclude the high level of husbandry that is required for successful nitrogen management.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 8 (1992), S. 0 
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. Water erosion was recorded between mid-October and mid-December 1989 in 31 out of 73 erosion-susceptible arable fields being monitored in England and Wales. Most fields were drilled to winter cereals. Tramlines and wheelings were the factors most commonly linked with initiation of erosion, particularly where runoff was concentrated on valley floors or headlands. Lack of crop cover (〈 15%) was also an important factor at a number of sites; 25–30% ground cover was generally sufficient to protect the soils from erosion. Erosion was initiated by rainfall events of 15 mm or more in a 24 h period, with a maximum intensity greater than 4 mm/h. A large erosion event in south-west England was associated with 33 mm of rainfall in 4.25 h, with a maximum intensity of 22 mm/h.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 48 (1993), S. 0 
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: White clover content and herbage production in grass/clover swards were studied at contrasting altitudes in Wales. The lowland experiment (1) compared the performance of three clover varieties grown with four diploid perennial ryegrass (Lolium perenne) varieties with a range of heading dates. In the upland experiment (2) the productivity and persistence of Aberystwyth S184 (small-leaved) clover was studied in association with three perennial ryegrasses.In experiment I. clover content and dry matter production with Aurora (very early) ryegrass was superior to that with Frances (early), Talbot (intermediate) and Melle (late). Furthermore, the performance of Kent wild white clover (small-leaved) was better than that of medium-leaved Menna and Grasslands Huia. Averaged over two years (1985 and 1986) mean clover content of Kent was 22% compared with 9% and 10% of Menna and Huia.Performance of S184 clover during the five years (1986–90) of experiment 2 was better with Meltra (late tetraploid) than with Aberystwyth S23 (late diploid) and intermediate with Aurora. Clover stolon length and growing point number declined to a low level in 1988 but increased dramatically in 1989 and 1990 after cessation of applying fertilizer N.Results from both sites were related to animal performance data previously published. It is concluded that small-leaved clover varieties are needed to ensure a high proportion of clover in sheep pastures and also that choice of companion ryegrass can have a significant effect on the performance of the legume component.
    Type of Medium: Electronic Resource
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