Skip navigation
SuUB logo
DSpace logo

  • Home
  • Institutions
    • University of Bremen
    • City University of Applied Sciences
    • Bremerhaven University of Applied Sciences
  • Sign on to:
    • My Media
    • Receive email
      updates
    • Edit Account details

Citation link: http://nbn-resolving.de/urn:nbn:de:gbv:46-00102584-17
00102584-1.pdf
OpenAccess
 
copyright

High-resolution seismo-acoustic studies of alongslope and downslope sediment transport processes shaping depositional patterns at continental margins


File Description SizeFormat
00102584-1.pdf26.53 MBAdobe PDFView/Open
Other Titles: Hochauflösende seismo-akustische Studien von hangparallelen und hangabwärts gerichteten Sedimenttransportprozessen an Ozeanrändern
Authors: Preu, Benedict 
Supervisor: Spieß, Volkhard  
1. Expert: Spieß, Volkhard  
Experts: Hebbeln, Dierk
Abstract: 
Downslope and alongslope sediment transports represent important processes during the evolution of continental margins. This thesis reveals the impact of both transport processes on slope architecture in highly dynamic oceanographic settings and assesses their interaction using seismo- and hydroacoustic data. The study area covers the northern Argentine continental slope, where a contourite depositional system is located beneath the Brazil-Malvinas Confluence. The most prominent sedimentary features are represented by contourite terraces and the Mar del Plata canyon (MdP). Analysis of the slope architecture revealed the major influence of North Atlantic Deep Water production on the margin evolution since the Middle Miocene. The variability of morphosedimentary features with respect to the oceanographic regime indicates that contourite terraces are linked to water mass interfaces. The lack of sediments north of the MdP is the result of the disturbance of the current regime caused by the canyon. The importance of alongslope transport processes is shown in a novel study off Mozambique using hydroacoustic data imaging particles in water depth >200 m.
Keywords: Contourites; Bottom currents; Argentine continental margin; Brazil-Malvinas Confluence; Multichannel seismic; Mar del Plata Canyon; Contourite terrace; alongslope sediment transport; downslope sediment transport; contourite depositional system
Issue Date: 20-Apr-2012
Type: Dissertation
URN: urn:nbn:de:gbv:46-00102584-17
Institution: Universität Bremen 
Faculty: FB5 Geowissenschaften 
Appears in Collections:Dissertationen

  

Page view(s)

283
checked on Feb 2, 2023

Download(s)

730
checked on Feb 2, 2023

Google ScholarTM

Check


Items in Media are protected by copyright, with all rights reserved, unless otherwise indicated.

Legal notice -Feedback -Data privacy
Media - Extension maintained and optimized by Logo 4SCIENCE