+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Multibeam backscatter as a tool for sea-floor characterization and identification of oil spills in the Galicia Bank



Multibeam backscatter as a tool for sea-floor characterization and identification of oil spills in the Galicia Bank



Marine Geology 249(1-2): 93-107



This study is focused on the potential of using the multibeam acoustic backscatter both for sea-floor characterization of the Galicia Bank and for identification of sea-bottom oil spills. An extended multibeam data set was acquired during the RG-1 and RG-2 surveys aboard RV Hesperides in 2003 for the geological and geophysical characterization of the Galicia Bank, where the oil tanker Prestige wreck is located. 3-D images have been made by integrating bathymetry and backscatter data. Multibeam data have been additionally supported by gravity core information in order to correlate sea-floor acoustic backscatter with the surficial sediments and their physical properties. The major factors that seem to control the zonation of the backscatter intensity images are (i) the type of the sedimentary processes (gravitational, turbiditic, hemipelagic), which control at the same time, the grain size distribution, and (ii) the sea-bottom morphologies, such as basement outcrops. However, there are some backscatter halos that cannot be explained by these processes. In the backscatter maps, the bow and stern of the Prestige wreck are clearly marked by a high-backscatter intensity anomaly, whose existence is discussed.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 023076927

Download citation: RISBibTeXText

DOI: 10.1016/j.margeo.2007.09.007


Related references

Construction of sea floor thematic maps from multibeam acoustic backscatter angular response data. Computers & Geosciences 41, 2012

Image-based classification of multibeam sonar backscatter data for objective surficial sediment mapping of Georges Bank, Canada. Continental Shelf Research 31.2, Suppl., 2011

Initial results from seafloor characterization of Arctic and Antarctic margins using multibeam backscatter. Oulu, Finland (FIN): University of Oulu, 2012

Seabottom characterization using multibeam echosounder angular backscatter; an application of the composite roughness theory. IEEE Transactions on Geoscience and Remote Sensing 38(5, Part 2): 2419-2422, 2000

Sea floor sediment mapping based on acoustic backscatter strength; Stellwagen Bank National Marine Sanctuary. Abstracts with Programs - Geological Society of America 31(2): 74, 1999

Preliminary results of a multibeam bathymetry and backscatter survey. Open-File Report - U S, 2000

Multibeam backscatter, the other hydrographic dataset what is it and whats it good for?. Canadian Technical Report of Fisheries & Aquatic Sciences (2403): 4, 2002

Geological characterization of the Galicia Bank region Atlantic Ocean, NW Iberia. Marine Geology 249.1-2, 2008

Multibeam bathymetry and backscatter imaging of the Canadian continental shelf. Geoscience Canada 27(1): 31-42, 2000

Sea floor image maps showing topography, sun-Illuminated topography, backscatter intensity, ruggedness, slope, and the distribution of boulder ridges and bedrock outcrops in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. 2005

Geomorphology, acoustic backscatter, and processes in Santa Monica Bay from multibeam mapping. Marine Environmental Research 56(1-2): 15-46, 2003

Multibeam bathymetry and acoustic backscatter imagery of the southern Monterey Bay shelf. Open-File Report - U S, 1997

Pseudo sidescan images from backscatter amplitude data of the Hydrosweep multibeam sonar system. Indian Journal of Marine Sciences 26(3): 279-282, 1997

Multibeam volume acoustic backscatter imagery and reverberation measurements in the northeastern Gulf of Mexico. Journal of the Acoustical Society of America 112(2): 489-503, 2002

Relationships between multibeam backscatter, sediment grain size and Posidonia oceanica seagrass distribution. Continental Shelf Research 30.18, 2010