Journal of Coastal Research 32 3 465–482 Coconut Creek, Florida May 2016 The Environmental Implications of Sediment Transport in the Waters of Prince Rupert, British Columbia, Canada: A Comparison Between Kinematic and Dynamic Approaches Patrick McLaren SedTrend Analysis Limited Brentwood Bay, BC V8M1C5, Canada
[email protected] ABSTRACT McLaren, P., 2016. The environmental implications of sediment transport in the waters of Prince Rupert, British Columbia, Canada: A comparison between kinematic and dynamic approaches. Journal of Coastal Research, 32(3), 465– 482. Coconut Creek (Florida), ISSN 0749-0208. A Sediment Trend Analysis (STAt) was performed on 2474 grain-size distributions taken from the Port of Prince Rupert, British Columbia, Canada. The analysis was commissioned by the Lax Kw’alaams First Nations Band because of environmental concerns associated with future large-scale development plans, including a proposed liquefied natural gas (LNG) terminal associated with Flora Bank. Located at the mouth of the Skeena River, Flora Bank has long been considered an important nursery area for juvenile salmon. STA is an empirical technique to determine patterns of net sediment transport, which may provide a qualitative assessment of the possible environmental changes that could be expected following port construction. The patterns of transport revealed that sediments throughout the study area are derived from underlying till which is exposed in areas of strong currents. Flora Bank, a roughly 4 km2 area of intertidal sand, contained the coarsest and most well sorted sand, which was not found elsewhere throughout the study area. Although derived from till, the sand did not form transport pathways from the other sediment types; in addition, pathways could not be determined on the bank itself.