L'aménagement de l'Isère. Etat de la protection de l'agglomération grenobloise contre les crues (1968-1987)

Vivian, Huguette; Barret, Jérémie; Nicolle, R.

doi:10.3406/rga.1987.2680

Cited by 4 publications

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“…The cessation of gravel mining between the 1970s and the 1980s was followed by reorganization of the coarse bed load and slope adjustment along the studied reach (Vivian et al ., 1987; Vautier, 2000; Vautier et al ., 2002). This period was characterized by small alternate or median bars rapidly migrating downstream and by channel bed incision (Figure 5).…”

Section: Discussionmentioning

confidence: 99%

“…This corresponded to the situation within the embanked reach of the Isère River from the end of the 19th century to the 1970s. Between the 1970s and the 1980s, the cessation of gravel mining was followed by a transitory remobilization and reorganization of coarse sediments related to a readjustment of the longitudinal slope along the studied reach (Vivian et al ., 1987; Vautier, 2000; Vautier et al ., 2002). This period was characterized by small alternate or median bars rapidly migrating downstream and accreting together.…”

Section: Methodsmentioning

confidence: 99%

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Formation and dynamics of vegetated fluvial landforms follow the biogeomorphological succession model in a channelized river

Corenblit

Vautier

González

et al. 2020

Earth Surf Processes Landf

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Feedback between hydrogeomorphological processes and riparian plants drives landscape dynamics and vegetation succession in river corridors. We describe the consequences of biogeomorphological feedback on the formation and dynamics of vegetated fluvial landforms based on observations from the channelized Isère River in France. The channel was laterally confined with embankments and mostly straightened. From the beginning of the 1970s to the end of the 1990s, alternate bars were progressively but heavily colonized by vegetation. This context presented an exceptional opportunity to analyse temporal adjustments between fluvial landforms and vegetation succession from bare gravel bars to mature upland forest as the consequence of biogeomorphological interactions. Based on a GIS analysis of aerial photographs (between 1948 and 1996), we show that the spatiotemporal organization of vegetated bars within the river channel observed in 1996 resulted from a bioconstruction and biostabilization effect of vegetation and interactions between bars of varying age, size and mobility. Field measurements in 1996 reflected how a strong positive feedback between sedimentary dynamics and riparian vegetation succession resulted in the construction of the vegetated bars. A highly significant statistical association of geomorphological and vegetation variables (RV of co‐inertia analysis = 0.41, p < 0.001) explained 95% of the variability in just one axis, supporting the existence of very strong feedback between geomorphological changes (i.e. the transformation of small bare alternate bars to fluvial landforms covered by mature upland forest, and vegetation succession). Such dynamics reflect the fluvial biogeomorphological successions model, as described by the authors earlier. © 2020 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Formation and dynamics of vegetated fluvial landforms follow the biogeomorphological succession model in a channelized river

Corenblit

Vautier

González

et al. 2020

Earth Surf Processes Landf

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“…Voilà pourquoi certains géographes physiques réclament l'élaboration de plans de défense intégrale (Davy, 1980;Lambert et Vigneau, 1981;Gaberd et Nicod, 1982;Vivian et al, 1987;Laganier, 1990).…”

Section: L'adaptation Au Risqueunclassified

La géographie française et le risque d’inondation : de la géographie physique à la géographie humaine

Palom¹

2005

cgq

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Montréal. Il a pour mission la promotion et la valorisation de la recherche. Érudit offre des services d'édition numérique de documents scientifiques depuis 1998.Pour communiquer avec les responsables d'Érudit : erudit@umontreal.ca Article Anna Ribas Palom Cahiers de géographie du Québec, vol. 38, n° 103, 1994, p. 7-20. Pour citer la version numérique de cet article, utiliser l'adresse suivante :http://id.erudit.org/iderudit/022404ar RésuméLes inondations, comme tous les risques naturels, ont été un thème qui est revenu souvent au long de l'histoire de la géographie française, mais toujours -et contrairement à ce qui se passe dans la géographie anglo-saxonne -, en relation à la géographie physique. Dans cet article, nous voulons expliquer les raisons de la présence de la géographie physique dans le traitement du risque d'inondation : nous mettons en relation les différents moments de la géographie française avec l'analyse du risque d'inondation et révisons le contenu des références aux inondations entre les géographes ou écoles géographiques les plus représentatifs.Mots-clés : Géographie française, risque d'inondation, géographie physique, géographie humaine, recherche. Abstract French Geography and FloodsIn the same manner than the rest of natural hazards, floods hâve been a recurring area of interest for French geography. However, and contrary to Anglo-Saxon geography, this interest arose mainly in physical geography. This article attempts to explain the reasons for the présence of physical geography in this subject of research. The relationships between the différent moments of French geography with the analysis of the flood hazard are stressed through the study of flood-related research among the most représentative schools and individuals in French geography.

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France

Joly¹,

Bocquet²,

Bravard³

et al. 1997

Geomorphological Hazards of Europe

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L'aménagement de l'Isère. Etat de la protection de l'agglomération grenobloise contre les crues (1968-1987)

Cited by 4 publications

References 0 publications

Formation and dynamics of vegetated fluvial landforms follow the biogeomorphological succession model in a channelized river

Formation and dynamics of vegetated fluvial landforms follow the biogeomorphological succession model in a channelized river

La géographie française et le risque d’inondation : de la géographie physique à la géographie humaine

France

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