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Master Thesis

Ré-analyse géomorphologique de la débâcle de l'Oisans (1219) : étude des traces géomorphologiques héritées

Abstract : The Oisans lake collapse caused Grenoble 1219 Flood. This historic event was first described by four former authors of the 13th century, then re-studied by historians, geologists, geographers and geomorphologists of the 20th and 21st centuries. However, as the disaster celebrated its 800th anniversary in September 2019, all the studies about it deal only with extremely textual observations. There are no dimensions or physical elements about the phenomenon. Nevertheless, the disaster marked the landscape it crossed. The re-analysis tries to find enough geomorphologic clues to provide new explanations about the event progress. Through the re-analysis the aim of the study is also to question the place of disasters in geomorphology and risks studies. Reflections about acceptation of some aspect of catastrophism, geoheritage concept, new geomorphologic methods of investigation and example of a morphogenetic hazard are included in this work, to show how much a re-analysis could be interesting and useful. The new point of view highlights the complexity of the event, the cascading effects which lead to the flood in Grenoble and the hydraulic cataforms modeled by the water on the Livet passage.
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Master Thesis
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Submitted on : Tuesday, October 13, 2020 - 11:51:15 AM
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Camille L’hutereau. Ré-analyse géomorphologique de la débâcle de l'Oisans (1219) : étude des traces géomorphologiques héritées. Géographie. 2020. ⟨dumas-02965450⟩

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