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  • Elsevier  (15)
  • Kiel : GEOMAR, Forschungszentrum für Marine Geowissenschaften an der Christian-Albrechts-Universität zu Kiel  (3)
  • IFM-GEOMAR, Kiel  (2)
  • Blackwell Publishing Ltd
  • 2010-2014  (13)
  • 2000-2004  (7)
Document type
Keywords
Publisher
Language
Years
Year
  • 1
    Online Resource
    Online Resource
    Panama basin and Galápagos Plume, New INvestigations of Intraplate magmatism ; SO 144 ; Abschlußbericht 2002 ; Berichtszeitraum: 1. Juli 1999 bis 31. Dezember 2001 ; PAGANINI (2002)
    Kiel : GEOMAR, Forschungszentrum für Marine Geowissenschaften an der Christian-Albrechts-Universität zu Kiel
    Details Availability
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: Online-Ressource ([14] p. = 61,0 KB)
    Edition: [Elektronische Ressource]
    URL: https://edocs.tib.eu/files/e01fb02/358018102.pdf
    URL: https://edocs.tib.eu/files/e01fb02/358018102l.pdf
    Language: German , English
    Note: Contract BMBF 03G144 A. - Differences between the printed and electronic version of the document are possible. - nBibliography p. [8] - [10] , Also available as printed version , Systemvoraussetzungen: Acrobat Reader.
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  • 2
    Online Resource
    Online Resource
    HULA-II : Interdisziplinäre Untersuchungen zur zeitlichen Einordung des Hawaii-Emperor Knicks und dem Ursprung von Lithosphären Anomalien an der Musicians Seamount Kette ; SO 142 ; Abschlußbericht 2002 ; Berichtszeitraum: 1. Mai 1999 bis 31. Dezember 2001 (2002)
    Kiel : GEOMAR, Forschungszentrum für Marine Geowissenschaften an der Christian-Albrechts-Universität zu Kiel
    Details Availability
    Keywords: Forschungsbericht
    Description / Table of Contents: Hot spot volcanism, Musicians Seamounts, Italian Ridge, Bach Ridge, Crustal Structure, Ocean bottom hydrophones
    Type of Medium: Online Resource
    Pages: Online-Ressource ([10] p. = 57,6 KB)
    Edition: [Elektronische Ressource]
    URL: https://edocs.tib.eu/files/e01fb02/358017491.pdf
    URL: https://edocs.tib.eu/files/e01fb02/358017491l.pdf
    Language: German , English
    Note: Contract BMBF 03G142A. - Differences between the printed and electronic version of the document are possible. - Engl. abstract under title: SO 142-HULA II: Interdisciplinary investigations on the timing of the Hawaii-emperor bend and the origin of lithospheric anomalies along the musician seamount chain. - nBibliography p. [5] - [6]. - nIndex p. 7 , Also available as printed version , Systemvoraussetzungen: Acrobat Reader.
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  • 3
    Book
    Book
    Panama Basin and Galapagos Plume - new Investigations of Intraplate Magmatism : SO144 ; Abschlußbericht 2002 ; Berichtszeitraum: 1. Juli 1999 bis 31. Dezember 2001 ; PAGANINI (2002)
    Kiel : GEOMAR, Forschungszentrum für Marine Geowissenschaften an der Christian-Albrechts-Universität zu Kiel
    Details Availability
    Keywords: Forschungsbericht
    Description / Table of Contents: Galápagos Islands, East Pacific, hotspot, plume-ridge interaction, geochemistry, volcanology, magnetic anomalies, morphology
    Type of Medium: Book
    Pages: Getr. Zählung, [296] S. , Ill., graph. Darst., Kt.
    Language: English , German
    Note: Förderkennzeichen BMBF 03 G 144 A , Text teils dt., überw. in engl. Sprache , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Teilweise auch als elektronische Ressource vorh
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  • 4
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    RRS James Cook Fahrtbericht (2010)
    IFM-GEOMAR, Kiel
    Details
    Publication Date: 2021-03-29
    Description: report
    Keywords: 551.4 ; 550 ; TSZ 300 ; Pazifischer Ozean {Geophysik}
    Language: English
    Type: article , publishedVersion
    Format: 229 S.
    Format: application/pdf
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    CITATION GEO-LEO
  • 5
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    FS Sonne Fahrtbericht/Cruise Report SO 186 B, C & D (2010)
    IFM-GEOMAR, Kiel
    Details
    Publication Date: 2021-03-29
    Description: report
    Keywords: 551.4 ; 551.22 ; 550 ; UKD 100 ; UHD 540 ; TOH 200 ; Expeditionsberichte {Regionale Ozeanologie, Indischer Ozean} ; Lange Wellen außer Gezeitenwellen {Dynamische Ozeanologie} ; Seismische Vorhersagen {Geophysik}
    Language: English
    Type: article , publishedVersion
    Format: 174 S.
    Format: application/pdf
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    CITATION GEO-LEO
  • 6
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    Crustal structure across the Møre margin, mid-Norway, from wide-angle seismic and gravity data (2014)
    Elsevier
    In:  Tectonophysics, 626 . pp. 21-40.
    Details
    Publication Date: 2018-01-05
    Description: The Møre Margin in the NE Atlantic represents a dominantly passive margin with an unusual abrupt transition from alpine morphology onshore to a deep sedimentary basin offshore. In order to study this transition in detail, three ocean bottom seismometer profiles with deep seismic reflection and refraction data were acquired in 2009; two dip-profiles which were extended by land stations, and one tie-profile parallel to the strike of the Møre–Trøndelag Fault Complex. The modeling of the wide-angle seismic data was performed with a combined inversion and forward modeling approach and validated with a 3D-density model. Modeling of the geophysical data indicates the presence of a 12–15 km thick accumulation of sedimentary rocks in the Møre Basin. The modeling of the strike profile located closer to land shows a decrease in crustal velocity from north to south. Near the coast we observe an intra-crustal reflector under the Trøndelag Platform, but not under the Slørebotn Sub-basin. Furthermore, two lower crustal high-velocity bodies are modeled, one located near the Møre Marginal High and one beneath the Slørebotn Sub-basin. While the outer lower crustal body is modeled with a density allowing an interpretation as magmatic underplating, the inner body has a density close to mantle density which might suggest an origin as an eclogized body, formed by metamorphosis of lower crustal gabbro during the Caledonian orogeny. The difference in velocity and extent of the lower crustal bodies seems to be controlled by the Jan Mayen Lineament, suggesting that the lineament represents a pre-Caledonian structural feature in the basement.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.tecto.2014.03.021
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 7
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    Structure and geodynamics of the post-collision zone between the Nazca–Antarctic spreading center and South America (2012)
    Elsevier
    In:  Earth and Planetary Science Letters, 345/348 . pp. 27-37.
    Details
    Publication Date: 2019-09-23
    Description: The Chile Triple Junction (CTJ) is the place where the Chile Ridge (Nazca–Antarctic spreading center) is subducting beneath the continental South American plate. Sediment accretion is active to the south of the CTJ in the area where the northward migrating Chile Ridge has collided with the continent since 14 Ma. At the CTJ, tectonic erosion of the overriding plate narrows and steepens the continental slope. We present here a detailed tomographic image of the upper lithospheric Antarctic–South America subduction zone where the Chile Ridge collided with the continent 3–6 Ma off Golfo de Penas. Results reveal that a large portion of trench sediment has been scraped off and frontally accreted to the forearc forming a 70–80 km wide accretionary prism. The velocity–depth model shows a discontinuity at 30–40 km landward of the deformation front, which is interpreted as the contact between the frontal (poorly consolidated sedimentary unit) and middle (more compacted sedimentary unit) accretionary prism. The formation of this discontinuity could be related to a short term episode of reduced trench sedimentation. In addition, we model the shape of the continental slope using a Newtonian fluid rheology to study the convergence rate at which the accretionary prism was formed. Results are consistent with an accretionary prism formed after the collision of the Chile Ridge under slow convergence rate similar to those observed at present between Antarctic and South America (∼2.0 cm/a). Based on the kinematics of the Chile Ridge subduction during the last 13 Ma, we propose that the accretionary prism off Golfo de Penas was formed recently (∼5 Ma) after the collision of the Chile Ridge with South America.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.epsl.2012.06.023
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 8
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    Subduction system variability across the segment boundary of the 2004/2005 Sumatra megathrust earthquakes (2013)
    Elsevier
    In:  Earth and Planetary Science Letters, 365 . pp. 108-119.
    Details
    Publication Date: 2019-09-23
    Description: Subduction zone earthquakes are known to create segmented patches of co-seismic rupture along-strike of a margin. Offshore Sumatra, repeated rupture occurred within segments bounded by permanent barriers, whose origin however is still not fully understood. In this study we image the structural variations across the rupture segment boundary between the Mw 9.1 December 26, 2004 and the Mw 8.6 March 28, 2005 Sumatra earthquakes. A set of collocated reflection and wide-angle seismic profiles are available on both sides of the segment boundary, located offshore Simeulue Island. We present the results of the seismic tomography modeling of wide-angle ocean bottom data, enhanced with MCS data and gravity modeling for the southern 2005 segment of the margin and compare it to the published model for the 2004 northern segment. Our study reveals principal differences in the structure of the subduction system north and south of the segment boundary, attributed to the subduction of 96°E fracture zone. The key differences include a change in the crustal thickness of the oceanic plate, a decrease in the amount of sediment in the trench as well as variations in the morphology and volume of the accretionary prism. These differences suggest that the 96°E fracture zone acts as an efficient barrier in the trench parallel sediment transport, as well as a divider between oceanic crustal blocks of different structure. The variability of seismic behavior is caused by the distinct changes in the morphology of the subduction complex across the boundary related to the difference in the sediment supply.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.epsl.2012.12.032
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 9
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    The continental margin off Oregon from seismic investigations (2000)
    Elsevier
    In:  Tectonophysics, 329 (1-4). pp. 79-97.
    Details
    Publication Date: 2018-01-05
    Description: In April and May 1996, a geophysical study of the Cascadia continental margin off Oregon and Washington was carried out aboard the German RV Sonne as a cooperative experiment between GEOMAR, the USGS and COAS. Offshore central Oregon, which is the subject of this study, the experiment involved the collection of wide-angle refraction and reflection data along three profiles across the continental margin using ocean-bottom seismometers (OBS) and hydrophones (OBH) as well as land recorders. Two-dimensional modelling of the travel times provides a detailed velocity structure beneath these profiles. The subducting oceanic crust of the Juan de Fuca plate can be traced from the trench to its position some 10 km landward of the coastline. At the coastline, the Moho has a depth of 30 km. The dip of the plate changes from 1.5° westward of the trench to about 6.5° below the accretionary complex and to about 16° further eastward below the coast. The backstop forming western edge of the Siletz terrane, an oceanic plateau that was accreted to North America about 50 Ma ago, is well defined by the observations. It is located about 60 km to the east of the deformation front and has a seaward dip of 40°. At its seaward edge, the base of the Siletz terrane seems to be in contact with the subducting oceanic crust implying that sediments are unlikely to be subducted to greater depths. The upper oceanic crust is thinner to the east of this contact than to the west. At depths greater than 18 km, the top of the oceanic crust is the origin of pre-critical reflections observable in several land recordings and in the data of one ocean bottom instrument. These reflections are most likely caused by fluids that are released from the oceanic crust by metamorphic facies transition.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/S0040-1951(00)00190-6
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 10
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    Ocean-bottom seismology in the third millennium (2002)
    Elsevier
    In:  In: Science technology synergy for research in the marine environment: challanges for the XXI century. , ed. by Beranzoli, L., Favali, P. and Smriglio, G. Developments in marine technology, 12 . Elsevier, Amsterdam, Netherlands, pp. 37-44. ISBN 0-444-50591-1
    Details
    Publication Date: 2020-08-03
    Description: Marine seismic wide-angle data acquisition and earthquake seismology observations are at the verge of a quantum leap in data quality and density. Advances in micro-electronic technology facilitates the construction of instrumcnts that enable large data volumes to be collected and that are small and cheap enough so that large numbers can be built and operated economically. The main improvements are a dramatic decrease of power consumption ( 〈 250 m W) and increase in clock stability ( 〈 0.05 ppm}. Several scenarios for future experiments arc discussed in this contrihution
    Type: Book chapter , NonPeerReviewed
    Format: text
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