Multi-approach quantification of denudation rates in the Gulf of Lion source-to-sink system (SE France)

Molliex, Stéphane; Rabineau, Marina; Leroux, Estelle; Bourlès, Didier; Authémayou, Christine; Aslanian, Daniel; Chauvet, Frédéric; Civet, François; Jouet, Gwénaël

doi:10.1016/j.epsl.2016.03.043

Cited by 24 publications

(38 citation statements)

References 90 publications

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“…Denudation rates deduced for Corsica catchments are quite low in comparison with rates determined in the foreland of the northern European Alps, which present a similar geomorphic context (Wittmann et al, 2007;Norton et al, 2011;Molliex et al, 2016). The contemporary averaged sediment flux (bedload and suspended load) estimated from measurements performed at the Golo River outlet during the 27 August 1975 flood event is 64 500 ± 7500 t yr -1 (Quenelec, 1982).…”

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 97%

“…On the other hand, global studies indicate that morphology often controls denudation rates in such steep environments (Montgomery and Brandon, ; Portenga and Bierman, ; Willenbring et al , ). In the northern European Alps, 10 Be‐derived denudation rates appear to be partly correlated with geomorphic metrics such as slope or relief (Wittmann et al , ; Delunel et al , ; Norton et al , ; Glotzbach et al , ; Molliex et al , ).…”

Section: Discussionmentioning

confidence: 97%

“…3, Table II). Due to the rather short time period integrated when performing the direct sediment flux measurement method, extreme flood events such as millennial or centennial floods are not necessary recorded, which may lead to significant underestimations of fluxes in torrential or particular hydrological domains (watersheds highly sensitive to sudden floods, for instance) Serrat et al, 2001;Molliex et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Controls on Holocene denudation rates in mountainous environments under Mediterranean climate

Molliex

Jouet

Freslon

et al. 2016

Earth Surf Processes Landf

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Controls on Holocene denudation rates in mountainous environments under Mediterranean climate

Molliex

Jouet

Freslon

et al. 2016

Earth Surf Processes Landf

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“…Riccio et al, 2014).3 Wittmann et al, 2011).4 Puchol et al, 2016).5 Molliex et al, 2016). 6(Hippe et al, 2012).7 Carretier et al, 2015).8 Lupker et al, 2012).…”

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Basinga: A cell‐by‐cell GIS toolbox for computing basin average scaling factors, cosmogenic production rates and denudation rates

Charreau

Blard

Zumaque

et al. 2019

Earth Surf Processes Landf

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The calculation of denudation rates from the measured cosmogenic nuclide concentrations in river sediments requires assumptions and approximations. Several different approaches and numerical tools are available in the literature. A widely used analytical approach represents the muogenic production with one or two exponentials, assumes the attenuation length of muons to be constant and also neglects temporal variations in the Earth's magnetic field. The denudation rates are then calculated directly and analytically from the measured concentrations. A second numerical and iterative approach was more recently proposed and considers a more rigorous muogenic production law based on pre‐calculated variable attenuation length of muons and accounts for temporal changes of the magnetic field. It also assumes a specific distribution of denudation rates throughout the basin and uses an iterative approach to calculate the basin average denudation rates. We tested the two approaches across several natural basins and found that both approaches provide similar denudation results. Hence, assuming exponential muogenic production and constant attenuation length of muons in the rock has little impact on the derived denudation rates. Therefore, unless a priori known distributions of denudation rates are to be tested, there does not appear to be any particular gain from using the second iterative method which is computationally less effective. Based on these findings, we developed and describe here Basinga, a new ArcGIS® and QGIS toolbox which computes the basin average scaling factors, cosmogenic production rates and denudation rates for several tens of drainage basins together. Basinga follows either the Lal/Stone or the Lifton/Sato/Dunai scaling schemes and includes several optional tools for correcting for topographic shielding, ice cover and lithology. We have also developed an original method for correcting the cosmogenic production rates for past variations in the Earth's magnetic field. © 2019 John Wiley & Sons, Ltd.

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Multidisciplinary Study of Marine Archives: Reconstruction of Sea-Level, Sediment Yields, Sediment Sources, Paleoclimate, Paleoceanography and Vertical Movement on Margins: Examples from the Western Mediterranean Sea

Rabineau¹,

Pellen

Pasquier³

et al. 2022

Advances in Science, Technology &Amp; Innovation

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The numerous processes (superficial and deep) occurring on margins, their origins, consequences, interactions and quantifications are only very partially described and understood. The identification of the relative role of factors is sometimes completely contradictory between authors. Here, we showed the results of a long-term multidecadal and multidisciplinary study (using geophysical, geological, stratigraphic, paleontological, geomorphologic, geochemical, microbiological and numerical models) in the Western Mediterranean Sea that acts as a natural laboratory at many different scales. We showed how sediments efficiently recorded at the same time: variations of glacio-eustatic sea-level changes, variations of sediments yield and sources, and also enabled quantifying vertical movements and geodynamic worldwide events but also detailed regional mass transport, turbidites and contourites deposits. They are also an archive of paleoclimatic, palaeoceanographic and diagenetic processes.

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Multi-approach quantification of denudation rates in the Gulf of Lion source-to-sink system (SE France)

Cited by 24 publications

References 90 publications

Controls on Holocene denudation rates in mountainous environments under Mediterranean climate

Controls on Holocene denudation rates in mountainous environments under Mediterranean climate

Basinga: A cell‐by‐cell GIS toolbox for computing basin average scaling factors, cosmogenic production rates and denudation rates

Multidisciplinary Study of Marine Archives: Reconstruction of Sea-Level, Sediment Yields, Sediment Sources, Paleoclimate, Paleoceanography and Vertical Movement on Margins: Examples from the Western Mediterranean Sea

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