Stage-discharge relationship in tidal channels
Kearney, William S.
Deegan, Linda A.
MetadataShow full item record
Long-term records of the flow of water through tidal channels are essential to constrain the budgets of sediments and biogeochemical compounds in salt marshes. Statistical models which relate discharge to water level allow the estimation of such records from more easily obtained records of water stage in the channel. Here we compare four different types of stage-discharge models, each of which captures different characteristics of the stage-discharge relationship. We estimate and validate each of these models on a two-month long time series of stage and discharge obtained with an Acoustic Doppler Current Profiler in a salt marsh channel. We find that the best performance is obtained by models that account for the nonlinear and time-varying nature of the stage-discharge relationship. Good performance can also be obtained from a simplified version of these models, which captures nonlinearity and nonstationarity without the complexity of the fully nonlinear or time-varying models.
Author Posting. © The Author(s), 2016. This is the author's version of the work. It is posted here by permission of Association for the Sciences of Limnology and Oceanography for personal use, not for redistribution. The definitive version was published in Limnology and Oceanography: Methods 15 (2017): 394–407, doi:10.1002/lom3.10168.
Suggested CitationPreprint: Kearney, William S., Mariotti, Giulio, Deegan, Linda A., Fagherazzi, Sergio, "Stage-discharge relationship in tidal channels", 2016-12, https://doi.org/10.1002/lom3.10168, https://hdl.handle.net/1912/9026
Showing items related by title, author, creator and subject.
Ralston, David K.; Yellen, Brian; Woodruff, Jonathan D.; Fernald, Sarah (Wiley, 2020-07-17)Nonlinear turbidity‐discharge relationships are explored in the context of sediment sourcing and event‐driven hysteresis using long‐term (≥12‐year) turbidity observations from the tidal freshwater and saline estuary of the ...
Inferring tidal wetland stability from channel sediment fluxes : observations and a conceptual model Ganju, Neil K.; Nidzieko, Nicholas J.; Kirwan, Matthew L. (John Wiley & Sons, 2013-10-07)Anthropogenic and climatic forces have modified the geomorphology of tidal wetlands over a range of timescales. Changes in land use, sediment supply, river flow, storminess, and sea level alter the layout of tidal channels, ...
Friedrichs, Carl T. (Woods Hole Oceanographic Institution, 1993-02)In this thesis, mechanisms which control morphodynamics of shallow tidal embayments are investigated analytically. In the process of exploring these mechanisms (specifically asymmetries in bottom stress, τ), basis momentum ...