Erosion rates over millennial and decadal timescales at Caspar Creek and Redwood Creek, Northern California Coast Ranges

Ferrier, Ken L.; Kirchner, James W.; Finkel, Robert C.

doi:10.1002/esp.1260

Cited by 47 publications

(38 citation statements)

References 30 publications

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“…We assumed 10% uncertainties in both spallogenic and muogenic production rates to account for palaeomagnetic field fluctuations, changing amounts of snow shielding and variations in vegetation cover (e.g. Ferrier et al, 2005). Reductions in basin-wide production rates due to topographic shielding by basin interfluves were approximated using equation 1 of Dunne et al (1999) in conjunction with the DEM to estimate the maximum gradient at which a hypothetical planar surface would lie if draped across the divides (Binnie et al, 2006).…”

Section: Cosmogenic 10 Be-derived Denudation Ratesmentioning

confidence: 99%

Tectonic and climatic controls of denudation rates in active orogens: The San Bernardino Mountains, California

et al. 2010

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Section: Cosmogenic 10 Be-derived Denudation Ratesmentioning

confidence: 99%

Tectonic and climatic controls of denudation rates in active orogens: The San Bernardino Mountains, California

et al. 2010

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“…This, in turn, is a prerequisite for the development of appropriate catchment management strategies aimed at minimizing their negative effects on water quality, water treatment costs [Holmes, 1988] and ecological and human health. Fluvial sediment fluxes are also used to diagnose climatic and tectonic influences upon landscape denudation and evolution [e.g., Kirchner et al, 2001;Cornwell et al, 2003;Major, 2004;Ferrier et al, 2005].…”

Section: Introductionmentioning

confidence: 99%

Applying bootstrap resampling to quantify uncertainty in fluvial suspended sediment loads estimated using rating curves

Rustomji

Wilkinson

2008

Water Resources Research

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[1] Knowledge of suspended sediment loads in rivers is essential for catchment management purposes and study of landscape evolution. Obtaining such information is difficult because of the often sparse physical sampling of sediment concentrations and high temporal variability in discharge and sediment concentration, as well as strong hysteretic effects and temporal and spatial variations in catchment condition. Here bootstrap and Monte Carlo resampling techniques are used to calculate suspended sediment loads using sediment rating curves. The method proposed avoids the need to apply a bias correction factor to load estimates calculated using rating curves defined by least squares regression of log-transformed data. The algorithm also quantifies uncertainty in suspended sediment load estimates arising from uncertainty in the shape of the rating curve and the residual scatter in the data. Applied to 11 gauging stations in the catchment of Lake Burragorang in Australia, the method produced suspended sediment yields consistent with other Australian observations. The majority of the sediment delivered to the lake comes via the lower Wollondilly River (251 À49 +264 kt a À1 ), with lesser contributions from the Kowmung (114 À30 +62 kt a À1 ) and Cox's (63 À14 +81 kt a À1 ) rivers. Despite uncertainty in the shape of the rating curve at high flows, days with the largest flow clearly transport most of the suspended sediment delivered to the reservoir over the long term, with 40-85% of the total load being transported in <1% of the time. This bootstrap-based method could be applied to the calculation of other constituent fluxes in rivers where discrete sampling of constituent concentration serves as the principal data.Citation: Rustomji, P., and S. N. Wilkinson (2008), Applying bootstrap resampling to quantify uncertainty in fluvial suspended sediment loads estimated using rating curves, Water Resour. Res., 44, W09434,

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“…Several studies have evaluated concentrations of cosmogenic 10 Be in soils and sediment to estimate long-term input rates (e.g., Kirchner et al, 2001). In the case of Caspar Creek, Ferrier et al (2005) used results of such a study to conclude that recent erosion rates evaluated from monitoring data at Caspar Creek are lower than rates characteristic of the pre-logging period. Such conclusions rest heavily on the assumption that the distribution of sediment sources that produced the sampled sediment is typical of the distribution present over the period for which long-term rates are to be inferred.…”

Section: Implications For Forest Managementmentioning

confidence: 99%

The incidence and role of gullies after logging in a coastal redwood forest

et al. 2010

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Erosion rates over millennial and decadal timescales at Caspar Creek and Redwood Creek, Northern California Coast Ranges

Cited by 47 publications

References 30 publications

Tectonic and climatic controls of denudation rates in active orogens: The San Bernardino Mountains, California

Tectonic and climatic controls of denudation rates in active orogens: The San Bernardino Mountains, California

Applying bootstrap resampling to quantify uncertainty in fluvial suspended sediment loads estimated using rating curves

The incidence and role of gullies after logging in a coastal redwood forest

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