| Title | 2004 Grand Banks iceberg scour survey |
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| Author | Sonnichsen, G V; King, T |
| Source | Proceedings of the 21st International Conference on Port and Ocean Engineering under Arctic Conditions; 2011 p. 1-10 |
| Image |  |
| Year | 2011 |
| Alt Series | Earth Sciences Sector, Contribution Series 20110137 |
| Meeting | Port and Offshore Engineering under Arctic Conditions (POAC) Conference; Montreal; CA; July 10-14, 2011 |
| Document | book |
| Lang. | English |
| Media | paper |
| Province | Eastern offshore region |
| Area | Grand Banks |
| Lat/Long WENS | -49.0000 -48.0000 47.0000 46.2500 |
| Subjects | marine geology; geophysics; bathymetry; seafloor topography; seabottom topography; ice scours; scouring; scour marks; side-scan sonar; mapping techniques; oceanography; oceanographic surveys |
| Illustrations | location maps; tables; graphs; images |
| Program | Offshore Geoscience Geoscience East Coast |
| Released | 2011 01 01 |
| Abstract | In June of 2004, a multibeam sonar survey was conducted on northeast Grand Bank over a previously established repetitive mapping site to identify new seabed scours and improve the scour rate estimate
for the region. Post-survey analysis of the resulting multibeam data identified one scour event classified as new with a high degree of certainty, and nine other scour events that may be new, but having a lower degree of confidence. Uncertainty in
the identification of new scours was primarily due to limitations in the quality of the sidescan data collected during earlier baseline surveys. This paper describes the scour dataset collected during the survey, including distributions of relevant
scour metrics (i.e. width, depth), and the procedure used to evaluate the repetitive mapping data and resulting distribution of possible scour formation rates. |
| GEOSCAN ID | 289108 |
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