Analysis of post-fire suspended sediment sources by using colour parameters

Geoderma ◽  
2020 ◽  
Vol 379 ◽  
pp. 114638 ◽  
Author(s):  
Julián García-Comendador ◽  
Núria Martínez-Carreras ◽  
Josep Fortesa ◽  
Antoni Borràs ◽  
Aleix Calsamiglia ◽  
...  
Keyword(s):  
Suspended Sediment ◽  
Sediment Sources ◽  
Colour Parameters

Assessment of different colour parameters for discriminating potential suspended sediment sources and provenance: A multi-scale study in Luxembourg

Geomorphology ◽  
2010 ◽  
Vol 118 (1-2) ◽  
pp. 118-129 ◽  
Author(s):  
Núria Martínez-Carreras ◽  
Andreas Krein ◽  
Francesc Gallart ◽  
Jean F. Iffly ◽  
Laurent Pfister ◽  
...  
Keyword(s):  
Suspended Sediment ◽  
Sediment Sources ◽  
Multi Scale ◽  
Colour Parameters

Scanner derived colour parameters to determine suspended sediment sources in burned catchments

2020 ◽  
Author(s):  
Julián García-Comendador ◽  
Núria Martínez-Carreras ◽  
Josep Fortesa ◽  
Antoni Borràs ◽  
Aleix Calsamiglia ◽  
...  
Keyword(s):  
Suspended Sediment ◽  
Fire Management ◽  
Overland Flow ◽  
Management Strategies ◽  
Economic Cost ◽  
Suspended Sediments ◽  
Sediment Source ◽  
Sediment Sources ◽  
Geochemical Properties ◽  
Colour Parameters

<p>After a wildfire, total or partial removal of vegetal biomass and changes in physicochemical soil properties can lead to an increase in overland flow and sediment yield. Eventual damage must be counteracted urgently identifying erosion hotspots, implementing post-fire management programmes and sampling campaigns to check its effectiveness. Under this context, the sediment source fingerprinting technique is widely used for determining the origin of suspended sediments in catchments and can be useful to evaluate the effectiveness of sediment management programmes. It traditionally relies on the use of physical, biochemical and geochemical properties as tracers. However, measuring these tracers in the laboratory often entails a high economic cost and time consuming. Colour tracers were proven to greatly reduce this cost and measuring time, especially if measurements are done using a common office scanner. Here we propose that colour parameters can be used to investigate SS origin in burned catchments. To this end, we created artificial mixtures of sediment and ash to verify the colour linear additivity and the ash influence on colour parameters. We then used colour parameters for source-ascription of SS samples (n=9) collected during two years after a fire in small Mediterranean catchment (4.8 km<sup>2</sup>; Mallorca, Spain). Furthermore, reflectance-derived colour parameters were compared with those obtained using a current office scanner. The high correlation between most chromatic indexes (obtained using both methods; p < 0.01) suggested that scanning is a good alternative for measuring soil and sediment colour. A Bayesian tracer mixing model (MixSIAR) was applied to determine the relative contribution of each source. The type of mixing models allowed to appropriately represent natural and sampling uncertainty in tracer data. During the first events, suspended sediment was mainly originated in burned surfaces, whereas its contribution decreased throughout the study period. Tracing results obtained using colour parameters were compared with estimations using <sup>137</sup>Cs and <sup>210</sup>Pb<sub>ex</sub>, as recognized tracers to discriminate between surface and subsurface sediment sources after wildfires. Estimated source ascriptions with both methods (i.e. reflectance-derived colour parameters and radionuclides) matched in 88% of the samples measured. Colour tracers have been proved to be useful to discriminate between burned and unburned sources, making them suitable for suspended sediment source ascription and monitoring as part of post-fire management strategies.</p><p><em>This work was supported by the research project CGL2017-88200-R “Functional hydrological and sediment connectivity at Mediterranean catchments: global change scenarios –MEDhyCON2” funded by the Spanish Ministry of Science, Innovation and Universities, the Spanish Agency of Research (AEI) and the European Regional Development Funds (ERDF)</em></p>

Suspended sediment sources and transport distances in the Yellowstone River basin

2005 ◽  
Vol 117 (3) ◽  
pp. 515 ◽  
Author(s):  
Peter J. Whiting ◽  
Gerald Matisoff ◽  
William Fornes ◽  
Frederick M. Soster
Keyword(s):  
Suspended Sediment ◽  
River Basin ◽  
Sediment Sources ◽  
Yellowstone River

Evaluation of suspended-sediment sources in the Yeongsan River using Cs-137 after major human impacts

2014 ◽  
Vol 344 ◽  
pp. 64-74 ◽  
Author(s):  
Young Shin Lim ◽  
Jin Kwan Kim ◽  
Jong Wook Kim ◽  
Sei Sun Hong
Keyword(s):  
Suspended Sediment ◽  
Human Impacts ◽  
Sediment Sources

Fingerprinting suspended sediment sources in a large urban river system

2003 ◽  
Vol 314-316 ◽  
pp. 513-534 ◽  
Author(s):  
J CARTER ◽  
P OWENS ◽  
D WALLING ◽  
G LEEKS
Keyword(s):  
Suspended Sediment ◽  
River System ◽  
Urban River ◽  
Sediment Sources

Characterization and quantification of suspended sediment sources to the Manawatu River, New Zealand

2016 ◽  
Vol 543 ◽  
pp. 171-186 ◽  
Author(s):  
S.S. Vale ◽  
I.C. Fuller ◽  
J.N. Procter ◽  
L.R. Basher ◽  
I.E. Smith
Keyword(s):  
New Zealand ◽  
Suspended Sediment ◽  
Sediment Sources

Improving spatial representation of erosion sources using Sediment Fingerprinting with terrain data and sediment budget modelling

2020 ◽  
Author(s):  
Simon Vale ◽  
Hugh Smith
Keyword(s):  
Suspended Sediment ◽  
Source Apportionment ◽  
End Users ◽  
Sediment Budget ◽  
Storm Event ◽  
Sediment Source ◽  
Sediment Fingerprinting ◽  
Sediment Sources ◽  
Geochemical Tracers ◽  
Source Contributions

<p>Sediment fingerprinting quantifies proportional contributions of catchment sediment sources to downstream sediment mixtures and deposits. While the sediment fingerprinting technique is well established it is still challenged by the coarse spatial resolution of sediment source discrimination which hinders understanding of catchment sediment dynamics and limits its usefulness for land management where finer resolution spatial information is required.</p><p>Here, two conventional sediment fingerprinting datasets from New Zealand are used to show how spatial modelling of source loads can improve 1) the usefulness of sediment fingerprinting approaches and 2) visualization of results for end-users by combining source apportionment with terrain information and sediment budget modelling. The two case studies involve unmixing sediment source contributions to 1) overbank deposits within the Oroua River catchment, where six sediment sources (Mountain Range, Mudstone, Hill Subsurface, Hill Surface, Unconsolidated Sandstone, and Channel Bank) across two size fractions (<63 µm and 125–300 µm) were characterized using bulk geochemical and radionuclide tracers and 2) suspended sediment in the Manawatu catchment, where a similar six sources were characterized using bulk geochemical tracers to determine changes in source contributions to hourly suspended sediment samples during a 53hr storm event.</p><p>The proportional source contributions for each case study are applied to modelled sediment loads and spatially distributed using terrain information for rock type, slope and channel network extent to produce specific sediment yield maps for both catchments and spatial visualization of sediment generation during the Manawatu catchment storm event. Integrating sediment fingerprinting results with spatial datasets and modelling can enhance interpretation of source apportionment results and improve the utility of this information for end-users focused on the spatial targeting of erosion sources for mitigation to reduce downstream sediment impacts.   </p>

scholarly journals Spectral fingerprinting: characterizing suspended sediment sources by the use of VNIR-SWIR spectral information

2014 ◽  
Vol 14 (12) ◽  
pp. 1965-1981 ◽  
Author(s):  
Arlena Brosinsky ◽  
Saskia Foerster ◽  
Karl Segl ◽  
José Andrés López-Tarazón ◽  
Gemma Piqué ◽  
...  
Keyword(s):  
Suspended Sediment ◽  
Spectral Information ◽  
Sediment Sources
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