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  • Blackwell Publishing Ltd  (2)
  • Institute of Physics Publishing (IOP)
  • PANGAEA
  • 2020-2024  (1)
  • 1985-1989  (2)
Document type
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    VERTICAL HETEROGENEITY AND MOVEOUT IN THE ONE-DIMENSIONAL MEDIUM (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 35 (1987), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Since the important contributions of Dürbaum and Dix, 30 years ago, velocity profile estimation procedures on horizontally layered and vertically heterogeneous media from seismic probing data have been based largely on hyperbolic moveout models and RMS and stacking velocity concepts. Re-examination of the fundamentals reveals that quantitative velocity heterogeneity and canonical valocity profiles have been implicit factors for moveout modelling and for profile inversion in the use of the Dix procedure. Heterogeneity h is the ratio (and vRMS the geometric or harmonic mean) of the path-average and time-average velocities for a raypath or, in a more restricted sense, for the normal ray belonging to a velocity profile. The canonical profile for a given velocity profile or profile segment is a moveout-equivalent monotonically increasing ramp-like profile.The ramp or constant gradient in depth is the simplest velocity profile approximator which can explicitly accommodate velocity heterogeneity. A ramp model structure is detailed which facilitates moveout simulation and model parameter estimation, and the parametric effects are explored. The horizontal offset range is quantified for which this model can give good moveout approximations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1987.tb00845.x
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Biochemical Analysis of Bone Compacta in Osteogenesis Imperfecta (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 543 (1988), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1988.tb55322.x
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Unknown
    Geochemical analyses from the Boninite suite lavas and the Izu-Bonin forearc from IODP Hole 352-U1439A and 352-U1442A (2020)
    PANGAEA
    Details
    Publication Date: 2024-07-01
    Description: Whole rock geochemical analyses of nonfinite suite lavas sampled during IODP Expedition 352 at two sites: U1439C and U1442A. These sites lie in the Izu-Bonin forearc, NE of Chichijima (Bonin Island). The major elements and select trace elements analyzed the X-ray fluorescence spectrometry, other trace elements including the Rare Earth Elements (REE) analyzed by ICP-MS. CO2 was analyzed with a Costech Elemental Analyzer and used to correct major elements for secondary calcite content.
    Keywords: 352-U1439C; 352-U1442A; Aluminium oxide; Barium; boninite; Calcium oxide; Calculated; Carbon dioxide; CDRILL; Cerium; Chromium; CO2 * 56/44; Cobalt; Code; Core drilling; Corrected for Calcium carbonate; DEPTH, sediment/rock; DSDP/ODP/IODP sample designation; Dysprosium; Element analyser CHN, Costech; Erbium; Europium; Event label; EXP352; Gadolinium; Hafnium; high-Mg andesite; Holmium; IBM; Inductively coupled plasma - mass spectrometry (ICP-MS); Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; IODP Expedition 352; Iron oxide, Fe2O3; Iron oxide, FeO; Izu-Bonin arc; Izu-Bonin-Mariana fore arc; Joides Resolution; JOIDES Resolution; Lanthanum; Lead; Lithologic unit/sequence; Lutetium; Magnesium/Iron ratio; Magnesium oxide; Main Lithology; Manganese oxide; Neodymium; Nickel; Niobium; Phosphorus; Phosphorus pentoxide; Potassium; Potassium oxide; Praseodymium; Rubidium; Samarium; Sample code/label; Sample comment; Sample ID; Scandium; Silicon dioxide; Sodium oxide; Strontium; Sum; Terbium; Thorium; Thulium; Titanium; Titanium dioxide; Uranium; Vanadium; X-ray fluorescence (XRF); XRF analyses normalized to 100%; Ytterbium; Yttrium; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 4646 data points
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    DATA PANGAEA
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