Control Domains and Morphological Phases in Gravel Dominated Coastal Barriers of Nova Scotia

摘要: Gravel dominated barriers are a major coastal feature of mid and upper latitudes indicating the active sorting heterogeneous glacigenic sediments by wave action. Research over last decade has suggested sequential process for development gravel-dominated barrier coasts along Atlantic coast Nova Scotia, Controls on sediment supply, sea-level change, terrestrial basement geometry climate. The variable interaction these controls is shown to define distinctive domains in which phases morphology develop. Sediment supply its control alignment breakdown, as most important variables between-variation Scotia barriers. Long-term (10a 3 ) change tempo transgression thereby regulate macro-longshore Short term (<10a) rise may be influential rate breakdown. Barriers can assigned morphological structure one four main types domains; growth, consolidation, breakdown reformation. Some show different phases; growth an inception phase phase; slow rollover, fast rollover dissolution phases, exhibit elements several at same time. Whether regarded evolutionary debated. idea being considered result indeterminate activity presented.