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Type de documentTexte
PrécisionPublications_scientifiques
ThèmeAménagementsArchéologie
Contaminants associésCrues
ErosionGéochimie
GéomorphologieGestion
Interactions faune ou florePaléoenvironnements
RéglementationStocks
ThermieTransport solide
Versants
AuteurLandemaine V. et al.
Date de publication2014
ReferenceMorphological evolution of a rural headwater stream after channelisation. Geomorphology, 230(0), pp. 125-137
RattachementUniversité de Tours, BRGM
Période considéréeAnthropocene
Localisation OSLA1Pas d'information
Localisation OSLA2Pas d'information
Localisation OSLA3Pas d'information
Localisation OSLA4Pas d'information
Document numériséeOuiNon
FormatBMPJPGPDFPNGPPT
Nom du fichierLandemaine_et_al_2014.pdf
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Documents liés

Type Références Date Auteur
IMG Fig. 1. Maps of the Ligoire watershed showing the land use and the drainage network. 2014 Landemaine V. et al.
IMG Fig. 2. Current longitudinal bed profile of the main channel of the Ligoire with its tributaries and artificial knickpoints 2014 Landemaine V. et al.
IMG Fig. 3. Example of a cross section before and after channelisation. The cross section after the channelisation was designed based on the cross sections found before the channelisation. 2014 Landemaine V. et al.
IMG Fig. 4. Schematic representation of the adequate superposition of the cross sections after the channelisation and the current cross sections with the associated uncertainty ? = ± 5 cm on the elevatio... 2014 Landemaine V. et al.
IMG Fig. 5. Evolution of the longitudinal slopes of the streambed for period 1 (before and after the channelisation) (A) and period 2 (after the channelisation to the present) (B). Corresponding evolutio... 2014 Landemaine V. et al.
IMG Fig. 6. Estimated channel area along the longitudinal profile of the river: (+) is aggradation and (?) is erosion. (C3b): Micaceous chalks including flintstones; (C3a): argillaceous chalk with flints;... 2014 Landemaine V. et al.
IMG Fig. 7. (A) Longitudinal profile after channelisation and today. (B) In reach 4, the energy within the channel was not sufficient to transport all sediments coming from reach 5 and caused aggradation.... 2014 Landemaine V. et al.
IMG Fig. 8. (A) Current and after-channelisation bed profiles. (B) The low energy, combined with sediments supplied from reach 3, resulted in aggradation in reach 2. (C) The steep slopes in reach 3 and th... 2014 Landemaine V. et al.
IMG Fig. 9. Relationship between the longitudinal slopes after the channelisation and the channel areas. For a given slope value, the area can be positive (an erosional cross section) or negative (a depos... 2014 Landemaine V. et al.
IMG Fig. 10. Relationships between the current water surface, the current longitudinal slope, (A) the sediment thickness, and (B) the dominant sediment grain size. 2014 Landemaine V. et al.
IMG Fig. 11. The variation coefficient in terms of the mean channel area of each set: (A) of each of the 135 nine-value sets of channel areas (with no distinction between lateral and vertical shifting); (... 2014 Landemaine V. et al.
IMG Fig. 12. From 2 to 50,000 sediment budgets are considered for the calculation of (A) a mean sediment budget, and (B) the associated standard deviation. For each number of sediment budgets, the mean se... 2014 Landemaine V. et al.
IMG Fig. 13. Probability density function of the case of 1000 sediment budgets of the Ligoire channel. The mean sediment budget and its associated uncertainty are derived from this distribution. 2014 Landemaine V. et al.