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  • Elsevier  (31)
  • Wiley  (16)
  • Kiel : GEOMAR Forschungszentrum für Marine Geowissenschaften an der Christian-Albrechts-Universität zu Kiel  (3)
  • Springer  (3)
  • IFM-Geomar, Kiel  (2)
  • Blackwell Publishing Ltd
Document type
Keywords
Publisher
Language
Years
  • 1
    Online Resource
    Online Resource
    ORWELL : Oregon and Washington exploration of the lithosphere - a geophysical experiment : SONNE Fahrt SO108 ; Abschlußbericht ; Berichtszeitraum: 1. März 1996 bis 30. November 1998 (1999)
    Kiel : GEOMAR Forschungszentrum für Marine Geowissenschaften an der Christian-Albrechts-Universität zu Kiel
    Details Availability
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: 17 p. = 56,4 Kb., text
    Edition: [Electronic ed.]
    URL: https://edocs.tib.eu/files/e001/270277196.pdf
    Language: German
    Note: nIndex. - Contract BMBF 03G00108A , Differences between the printed and electronic version of the document are possible
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  • 2
    Online Resource
    Online Resource
    MAMUT : Makran-Murray Traverse - Geophysik plattentektonischer Extremfälle ; Sonne Fahrt SO 123 ; Abschlußbericht ; Berichtszeitraum: 1. Juli 1997 bis 31. Dezember 1999 (2000)
    Kiel : GEOMAR Forschungszentrum für Marine Geowissenschaften an der Christian-Albrechts-Universität zu Kiel
    Details Availability
    Keywords: Forschungsbericht
    Description / Table of Contents: Continental margins, seismic, ocean bottom seismometers, seismicity, accretion, Makran, Murray Ridge, Pakistan
    Type of Medium: Online Resource
    Pages: 25 p. = 85,9 Kb., text
    Edition: [Elektronische Ressource]
    URL: https://edocs.tib.eu/files/e001/314108882.pdf
    Language: German
    Note: Contract BMBF 03G00123A , Differences between the printed and electronic version of the document are possible
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  • 3
    Online Resource
    Online Resource
    PACOMAR 3 : Geowissenschaftliche Untersuchungen in pazifischen Seegebieten vor Costa Rica und Nicaragua ; ein Beitrag zum Verständnis eines aktiven Kontinentalrandes ; Abschlußbericht, Berichtszeitraum: 1. Dezember 1995 bis 31. Dezember 1998 (1999)
    Kiel : GEOMAR Forschungszentrum für Marine Geowissenschaften an der Christian-Albrechts-Universität zu Kiel
    Details Availability
    Keywords: Forschungsbericht
    Description / Table of Contents: Margin, seismics, Galapagos hotspot track, mantle plumes, geochemistry, volcanology, Nicaragua, Costa Rica
    Type of Medium: Online Resource
    Pages: 15 p. = 82 kB, text
    Edition: [Electronic ed.]
    URL: https://edocs.tib.eu/files/e001/253026709.pdf
    URL: https://edocs.tib.eu/files/e001/253026709l.pdf
    Language: German
    Note: nIndex , Contract no. BMBF 03G0107A , Differences between the printed and electronic version of the document are possible. - Attachments not included
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  • 4
    Electronic Resource
    Electronic Resource
    An automated ray method for diffraction modelling in complex media (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 116 (1994), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: We present the computational concept and first results of an automated 2-D ray-tracing algorithm which combines the standard ray method with the method of edge waves and paraxial ray tracing. Reliable ray synthetic seismograms are obtained for subsurface structures of high complexity. Both diffracted and multiple diffracted arrivals are automatically computed, complementing all types of primary arrivals (reflected, multiple reflected, converted waves, etc.) where geometric shadow zones are caused by edges (inhomogeneities) in the subsurface model. The method of computation can be summarized as follows: (1) during standard ray tracing, properties of central and paraxial rays are computed for a set of neighbouring rays. (2) Diffraction points (edges) are identified by comparing the amplitude and traveltime differences of neighbouring rays with the corresponding values of their paraxial approximation. (3) Detected edges are used as source points for diffracted rays. (4) Repetition of (1)-(3) for diffracted rays allows computation of multiple diffractions (‘diffracted diffractions’). (5) The amplitude decay of diffracted arrivals is computed according to the theory of edge waves. Its critical variables are expressed in terms of second-order paraxial traveltimes. The method is demonstrated for a simple and complex synthetic model and a real data complex model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1994.tb02124.x
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    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    NIZUSE: a deep seismic reflection line in north-eastern Germany (1994)
    Springer
    International journal of earth sciences 83 (1994), S. 161-169 
    Details
    ISSN: 1437-3262
    Keywords: Deep seismic reflection profiling ; Northeast German Basin ; External Variscides ; North German Massif ; Rugen-Pomorze Terrane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Out of a dense network of seismic reflection lines for hydrocarbon exploration in the North-east German Basin, several lines were recorded to 12 s TWT to obtain information about the structure of the crust and the crust-mantle transition. One of these profiles is presented here. This stretches for 110 km in a NNE direction between Neustrelitz and the island of Usedom. It reaches from the External Variscides in the south across the North German Massif into the Rügen-Pomorze Terrane in the Baltic Sea. Below Cenozoic-Mesozoic-Paleozoic cover with clear reflections down to base Zechstein, the reflectivity varies considerably with depth and also laterally. The Paleozoic and Precambrian sediments and basement are generally void of reflections, but the lower crust and the Moho show strong reflections. To the north the reflectivity decreases, and the Moho depth increases to beyond the bottom of the record section at 12 s. There are no direct indications for deep-reaching faults such as the Trans-European Fault in the north. The North German Massif acted as a ramp towards the Variscan Orogeny, similar to the London-Brabant Massif further west.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00211899
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    Paper (German National Licenses)
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  • 6
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    FS Sonne Fahrtbericht/Cruise Report SO 190 (2010)
    IFM-Geomar, Kiel
    Details
    Publication Date: 2021-03-29
    Description: report
    Keywords: 551.4 ; 551.22 ; 550
    Language: English
    Type: article , publishedVersion
    Format: 193 S.
    Format: application/pdf
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    CITATION GEO-LEO
  • 7
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    FS Sonne Fahrtbericht/Cruise Report SO 186 Leg 3 (2010)
    IFM-Geomar, Kiel
    Details
    Publication Date: 2021-03-29
    Description: report
    Keywords: 551.4 ; 551.22 ; 550 ; UKD 100 ; TSZ 200 ; TSJ 200 ; TOH 300 ; TOH 100 ; TOH 200 ; TQC 600 ; Expeditionsberichte {Regionale Ozeanologie, Indischer Ozean} ; Indischer Ozean {Geophysik} ; Südostasien {Geophysik} ; Seismische Wellen {Geophysik} ; Seismometrie {Geophysik} ; Seismische Vorhersagen {Geophysik} ; Tiefseeseismik {Geophysik}
    Language: English
    Type: article , publishedVersion
    Format: 212 S.
    Format: application/pdf
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    CITATION GEO-LEO
  • 8
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    Seismic investigations of the Ringkoebing-Fyn High on Langeland, Denmark (1990)
    Elsevier
    In:  Tectonophysics, 176 (1-2). pp. 25-41.
    Details
    Publication Date: 2018-01-17
    Description: A seismic refraction profile across Langeland (Denmark) obtained from land stations recording airgun shots allowed to resolve upper crustal velocities to a depth of 8 km. The profile traverses the proposed Caledonian Deformation Front and the Ringkoebing-Fyn High. The Ringkoebing-Fyn High is about 10 km wide and the top basement lies less than 2 km below the surface. Basement velocities as high as 6.4 km/s, at depths between 6 and 8 km, can be best explained by compositional changes between adjoining basement units to the north and south. South of the Ringkoebing-Fyn High another high velocity basement unit is encountered and most probably represents a basement affected by the Caledonian orogeny. Along this profile on Langeland the positions of the Caledonian Deformation Front and the northern limit of the Zechstein deposits coincide.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/0040-1951(90)90257-9
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 9
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    Wide-angle vibroseis data from the western Rhenish Massif (1990)
    Elsevier
    In:  Tectonophysics, 173 (1-4). pp. 83-93.
    Details
    Publication Date: 2019-05-08
    Description: A deep Seismic reflection profile collected by DEKORP and BELCORP in the western Rhenish Massif was supplemented by wide-angle measurements. Signals from a vibrator source were successfully recorded to a distance of 60 km. A passive recording array was operated that recorded all shots along the profile. The wide-angle and near-vertical data were used to construct a velocity model for the profile. Most of the wide-angle reflections coincide with strong near-vertical reflections or bands of high reflectivity. The North Variscan Deformation Front, seen as a prominent shallow reflection on many profiles in this region, separates an upper crust with rather nigh velocities from a layer with lower velocities underneath. At a depth of 20–22 km a thin (2–3 km thick) layer of high velocities is found. The Moho is not reflective either in the near-vertical or in the wide-angle data, suggesting the presence of a thick crust-mantle transition zone.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/0040-1951(90)90206-N
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  • 10
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    Crustal structure of the central Sunda margin at the onset of oblique subduction (2001)
    Wiley
    In:  Geophysical Journal International, 147 (2). pp. 449-474.
    Details
    Publication Date: 2018-07-16
    Description: The convergent margin of the central Sunda Arc in Indonesia was the target of a reflection and refraction seismic survey conducted in 1998 and 1999. Along two seismic lines across the subduction complex off southern Sumatra and off Sunda Strait, coincident multichannel and wide-angle data were collected, complemented by two refraction strike-lines in the forearc basin off Sumatra. The combined analysis of the acquired data allows us to present a detailed model of the subduction zone where initiation of strain partitioning occurs due to the onset of oblique subduction. The dip of the subducted plate is well defined along both dip-lines and a lateral increase from 5° to 7° from beneath the outer high off Sumatra to Sunda Strait is supported by complementary gravity modelling. The downgoing slab is traced to a depth of more than 30km. On both reflection dip-lines, a clearly developed backstop structure underlying a trench slope break defines the landward termination of the active accretionary prism and separates it from the outer high. Active subduction accretion is supported by laterally increasing velocities between the deformation front and the active backstop structure. Seismic velocities of the outer high are moderate along both lines (〈5.8kms−1 at 20km depth), suggesting a sedimentary composition. Reduced reflectivity beneath a rugged top basement traced along the outer high of both dip-lines supports a high degree of deformation and material compaction. Several kilometres of sediment has accumulated in the forearc domain, although a distinct morphological basin is only recognized off southern Sumatra and is not developed off Sunda Strait. The bathymetric elevation of the Java shelf that is encountered in the southern Sunda Strait corresponds to increased velocities of a basement high there and is connected to extensional structures of the Sunda Strait transtensional basin. Differences observed in the morphology of the forearc domain are also reflected in the lower crustal structure. Off southern Sumatra, the velocity–depth model clearly indicates a continental-type crust underlying the forearc basin, whereas lower velocities are found beneath the Sunda Strait forearc domain. Off Sumatra, some 3-D constraint on the upper plate structure is gained from the refraction strike-lines, which in addition is supported by synthetic data modelling.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1046/j.0956-540x.2001.01547.x
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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