![]() ![]() In: Ferm JC, Horne JC, Weisenfluh GA, Staub JR (eds) Carboniferous depositional environments in the Appalachian region. Canadian Society Petroleum Geologists, Calgary, pp 129–160īarwis JH, Hayes MO (1979) Regional patterns of modern barrier island and tidal inlet deposits as applied to paleoenvironmental studies. In: Miall AD (ed) Fluvial sedimentology, Canadian Society of Petroleum Geologists Memoir 5. US Geol Surv Prof Pap 282(E):135–144īarwis JH (1978) Sedimentology of some South Carolina tidal-creek pointbars and a comparison with their fluvial counterparts. ![]() Mar Geol 82:17–32īagnold RA (1960) Some aspects of the shape of river meanders. Ear Surf Process 5:347–368Īshley GM, Zeff ML (1988) Tidal channel classification for a low-mesotidal salt marsh. Mar Geol 146:147–171Īshley G (1980) Channel morphology and sediment movement in a tidal river Pitt River British Columbia. Q Sci Rev 19:1155–1231Īllen JRL, Duffy MJ (1998) Temporal and spatial depositional patterns in the Severn Estuary, Southwestern Britain: intertidal studies at spring-neap and seasonal scales, 1991–1993. Sed Geol 113:211–223Īllen JRL (2000) Morphodynamics of Holocene salt marshes: a review sketch from the Atlantic and Southern North Sea coasts of Europe. Geol Mijn 44:1–21Īllen JRL (1997) Simulation models of salt marsh morphodynamics: some implications for high-intertidal sediment couplets related to sea-level change. Mangroves Salt Marshes 1:239–241Īllen JRL (1965) Coastal geomorphology of eastern Nigeria: Beachridge barrier islands and vegetated tidal flats. doi: 10.1029/2008WR007016Īdams P (1997) Absence of creeks and pans in temperate Australian salt marshes. 1: implications of bend orientation on mean and turbulence flow structure. doi: 10.1029/2008WR007017Ībad JD, Garcia MH (2009b) Experiments in a high-amplitude Kinoshita-generated meandering channel. 2: implications of bend orientation on bed morphodynamics. This process is experimental and the keywords may be updated as the learning algorithm improves.Ībad JD, Garcia MH (2009a) Experiments in a high-amplitude Kinoshita-generated meandering channel. These keywords were added by machine and not by the authors. Pointbars in tidal regions are generally heavily bioturbated in the upper tidal range, and mid-tidal zones will exhibit inclined stratigraphy, often with intercalated beds of muddier and sandier deposits. Channels are preserved through infilling (as tidal prism is reduced) and through lateral accretion, particularly at meanders. Pointbars in tidal environments are often fully or partially detached from the bank by a channel formed by the subordinate tidal current, however their exact morphology varies being dependent on channel sinuosity and tidal asymmetry. ![]() Of particular importance, in terms of preservation potential, is the development of meanders in channels and the resulting pointbars. Mutually-evasive pathways of flood and ebb flows may produce cuspate meanders a morphology unique to tidal channels. Tidal channels evolve over time and a number of relationships are presented that have been derived to describe the geometry of tidal channels. Channel initiation may occur either through incision or by variations in rates of deposition. We examine the hydrodynamics of shallow tidal channels, including asymmetry in period or velocity between the ebb and flood tides, and the hysteresis seen in stage-velocity curves in regions with large intertidal areas. This chapter considers the classification of tidal channels and the networks they form. Being shaped by bidirectional flows, tidal channels exhibit morphologies, which, despite apparent similarities, bear significant and fundamental differences to fluvial channels, specifically their scaling with size. In shallow coastal settings channels provide a pathway for the tide to propagate and are, thus, a primary control on the sedimentation and ecology of these environments. ![]()
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