Quantifying bank erosion on the South River from 1937 to 2005, and its importance in assessing Hg contamination

Rhoades, E.; O’Neal, Michael; Pizzuto, J. E.

doi:10.1016/j.apgeog.2008.08.005

Cited by 90 publications

(82 citation statements)

References 22 publications

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“…During that time the calculated suspended sediment transport increased by three orders of magnitude, from 62 g s −1 to 23 kg s −1 , and it was calculated that the specific suspension delivery during these days reached twice the annual delivery (Reis, 2000). In a thesis by Rhoades (2008), mercury contamination from bank erosion was estimated for the South River, Virginia, USA. Leakage of mercury from industrial activities in the past had contaminated riverbank sediments.…”

Section: Impact On Water Qualitymentioning

confidence: 99%

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Mass transport of contaminated soil released into surface water by landslides (Göta River, SW Sweden)

Göransson

Larson

Bendz

et al. 2012

Hydrol. Earth Syst. Sci.

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Abstract. Landslides of contaminated soil into surface water represent an overlooked exposure pathway that has not been addressed properly in existing risk analysis for landslide hazard, contaminated land, or river basin management. A landslide of contaminated soil into surface water implies an instantaneous exposure of the water to the soil, dramatically changing the prerequisites for the mobilisation and transport of pollutants. In this study, an analytical approach is taken to simulate the transport of suspended matter released in connection with landslides into rivers. Different analytical solutions to the advection-dispersion equation (ADE) were tested against the measured data from the shallow rotational, retrogressive landslide in clayey sediments that took place in 1993 on the Göta River, SW Sweden. The landslide encompassed three distinct events, namely an initial submerged slide, followed by a main slide, and a retrogressive slide. These slides generated three distinct and non-Gaussian peaks in the online turbidity recordings at the freshwater intake downstream the slide area. To our knowledge, this registration of the impact on a river of the sediment release from a landslide is one of few of its kind in the world and unique for Sweden. Considering the low frequency of such events, the data from this landslide are highly useful for evaluating how appropriate the ADE is to describe the effects of landslides into surface water. The results yielded realistic predictions of the measured variation in suspended particle matter (SPM) concentration, after proper calibration. For the three individual slides it was estimated that a total of about 0.6 % of the total landslide mass went into suspension and was transported downstream. This release corresponds to about 1 to 2 % of the annual suspended sediment transport for that river stretch. The studied landslide partly involved an industrial area, and by applying the analytical solution to estimate the transport of metals in the sediments, it was found that landslides may release a significant amount of pollutants if large contaminated areas are involved. However, further studies are needed to develop more detailed descriptions of the transport processes. There is also a need to increase the knowledge on possible environmental consequences in the near and far field, in a short-and long-time perspective. In summary, the release of pollutants should not be neglected in landslide risk assessments.

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Section: Impact On Water Qualitymentioning

confidence: 99%

“…The concentration ranged from 5 to 140 ppm, and contaminated sediments were delivered to the river channel through bank erosion. It was estimated that a minimum of 161 000 m 3 of sediment eroded from the bank each year, releasing about 110 kg of Hg per year (Rhoades, 2008).…”

Section: Impact On Water Qualitymentioning

confidence: 99%

Mass transport of contaminated soil released into surface water by landslides (Göta River, SW Sweden)

Göransson

Larson

Bendz

et al. 2012

Hydrol. Earth Syst. Sci.

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“…Research that deals more directly with human waste is even less widespread although empirical work on 'watsan' (water and sanitation) issues in the global South (Andersson, 2001;Desai, 1995aDesai, , 1995bGandy, 2008;Giles & Brown, 1997;McFarlane, 2008aMcFarlane, , 2008bO'Hara, Hannan, & Genina, 2007;Jewitt and Labhsetwar, 2009;Swyngedouw, 2004, Swyngedouw, Kaiko, & Castro, 2002 and research on the analysis, modelling and prediction of water and beach contamination by sewage and other pollutants (Reeves and Patton, 2005;Kay et al, 2007;Collins and Anthony, 2008;Rahman, 2008;Anayah and Almasri, 2009) demonstrates the importance of applied geographical research on these topics. And in combination with wider geographical research on environmental quality, this work has provided some important monitoring, modelling and participatory resource management tools for improved landuse planning and environmental management which have great relevance for understanding and managing the threats and opportunities created by human excreta (He et al, 2006;Ivey et al, 2006;Wang et al, 2007;Collins and Anthony, 2008;de Graaff, 2008;Maconachie et al, 2008: Zeilhofer andTopanotti 2008;Rahman, 2008;Anayah and Almasri, 2009;Collins et al, 2009;Dewan and Yamaguchi, 2009;Kamusoko et al, 2009;Maantay and Maroko, 2009;Rhoades et al, 2009;Velázquez et al, 2009;Mishra and Griffin, 2010).…”

Section: Introductionmentioning

confidence: 99%

Poo gurus? Researching the threats and opportunities presented by human waste

Jewitt

2011

Applied Geography

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“…After the integration of a scanning mechanism with lidar and an inertial measurements unit with GPS in the early 1990s, it has been possible to use first airborne laser scanning (ALS), then MLS data, in addition to static based terrestrial laser scanning (TLS), to improve the measurement and modeling of fluvial environments (e.g., [2][3][4][5][6][7][8][9][10][11][12]). High-resolution ALS provides detailed information on topographical features of fluvial environments that influence the river hydraulics, giving, therefore, the potential to improve existing hydraulic models (e.g., [13][14][15][16][17]).…”

Section: Introductionmentioning

confidence: 99%

Mapping Topography Changes and Elevation Accuracies Using a Mobile Laser Scanner

et al. 2011

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Laser measurements have been used in a fluvial context since 1984, but the change detection possibilities of mobile laser scanning (MLS) for riverine topography have been lacking. This paper demonstrates the capability of MLS in erosion change mapping on a test site located in a 58 km-long tributary of the River Tenojoki (Tana) in the sub-arctic. We used point bars and river banks as example cases, which were measured with the mobile laser scanner ROAMER mounted on a boat and on a cart. Static terrestrial laser scanner data were used as reference and we exploited a difference elevation model technique for describing erosion and deposition areas. The measurements were based on data acquisitions during the late summer in 2008 and 2009. The coefficient of determination (R 2 ) of 0.93 and a standard deviation of error 3.4 cm were obtained as metrics for change mapping based on MLS. The root mean square error (RMSE) of MLS-based digital elevation models (DEM) for non-vegetated point bars ranged between 2.3 and 7.6 cm after correction of the systematic error. For densely vegetated bank areas, the ground point determination was more difficult resulting in an RMSE between 15.7 and 28.4 cm. OPEN ACCESSRemote Sens. 2011, 3 588

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Quantifying bank erosion on the South River from 1937 to 2005, and its importance in assessing Hg contamination

Cited by 90 publications

References 22 publications

Mass transport of contaminated soil released into surface water by landslides (Göta River, SW Sweden)

Mass transport of contaminated soil released into surface water by landslides (Göta River, SW Sweden)

Poo gurus? Researching the threats and opportunities presented by human waste

Mapping Topography Changes and Elevation Accuracies Using a Mobile Laser Scanner

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