| Title | Providing multidisciplinary scientific advice for coastal planning in Kitimat Arm, British Columbia |
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| Author | Lintern, G ;
Blais-Stevens, A; Stacey, C; Shaw, J; Bobrowsky, P; Conway, K; Huntley, D; MacKillop, K; Overeem, I; Scherwath, M |
| Source | Subaqueous mass movements and their consequences: assessing geohazards, environmental implications and economic significance of subaqueous landslides; by Lintern, D G (ed.); Mosher, D G (ed.); Moscardelli, L G (ed.); Bobrowsky, P T (ed.); Campbell, C (ed.); Chaytor, J (ed.); Clague, J (ed.); Georgiopoulou, A (ed.); Lajeunesse, P
(ed.); Normandeau, A (ed.); Piper, D (ed.); Scherwath, M (ed.); Stacey, C (ed.); Turmel, D (ed.); Geological Society, Special Publication vol. 477, 2019
p. 567-581, https://doi.org/10.1144/SP477.40 |
| Image |  |
| Year | 2019 |
| Alt Series | Natural Resources Canada, Contribution Series 20180072 |
| Publisher | Geological Society of London (London, United Kingdom) |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf; html |
| Province | British Columbia |
| NTS | 103H/15; 103I/02 |
| Area | Kitimat Arm; Kitimat; Kitamaat Village; Hartley Bay; Douglas Channel; Hawkesbury Island |
| Lat/Long WENS | -129.0000 -128.5000 54.2500 53.7500 |
| Subjects | marine geology; surficial geology/geomorphology; engineering geology; hydrogeology; Health and Safety; Science and Technology; Nature and Environment; Transport; coastal environment; marine
environments; fiords; coastal management; regional planning; slope failures; landslides; debris flows; mass wasting; tsunami; geological history; modelling; seismology; seismicity; seismic risk; earthquakes; earthquake risk; crustal movements; marine
sediments; deltas; postglacial deposits; muds; landslide deposits; debris flow deposits; glacial deposits; moraines; scouring; bedrock geology; structural features; faults; bathymetry; grab samples; marine sediment cores; geophysical surveys; seismic
surveys, marine; acoustic surveys, marine; side-scan sonar; slope stability analyses; salinity; groundwater flow; in-field instrumentation; sea level fluctuations; Kitimat Slide Complex; Kitimat Delta; Infrastructures; mitigation; Mitigation;
glaciomarine sediments; Phanerozoic; Cenozoic; Quaternary |
| Illustrations | location maps; geoscientific sketch maps; geophysical images; seismic profiles; cross-sections; profiles; plots; photographs; tables; time series |
| Program | Public Safety Geoscience Assessing landslides and marine geohazards |
| Released | 2019 04 16 |
| Abstract | A 6.3 m tsunami swept through Kitimat Arm, British Columbia in 1974. An even larger wave struck and damaged the Northlands Navigation dock at Kitimat and the Haisla First Nation docks at Kitamaat
Village the following year. Further down the fjord, two large coastal block failures were observed on the fjord walls across from the Gitga'at village of Hartley Bay. Several large infrastructure projects have recently been proposed for the Kitimat
Arm coastal areas. The Geological Survey of Canada has therefore embarked on a five-year project to understand the magnitude and frequency of submarine mass movements in this fjord system to provide information regarding the risks from these events
and to propose mitigation measures that may reduce these risks. We provide here an overview and the main results to date of an ongoing multidisciplinary study, which includes palaeotsunami studies, geomorphological and sub-seabed mapping, subaerial
landslide hazard assessment, tsunami modelling, in situ and laboratory geotechnical testing, and the real-time tracking of seismic activity and seafloor movement. Some of these activities are reported in greater detail elsewhere in this book. The
results of this research are summarized as a list of conclusions and recommendations to the Government of Canada. |
| GEOSCAN ID | 321924 |
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