Rocky coasts evolution on the Brøgger peninsula (Spitsbergen): control and variability

• Main Authors: Bourriquen, Marine, Mercier, Denis, Baltzer, Agnès, Costa, Stéphane, Fournier, Jérôme
• Other Authors: Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Université d'Angers (UA)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN), Université de Nantes (UN)-Université de Nantes (UN), Université de Nantes (UN), Sorbonne Université (SU), Espaces, Nature et Culture (ENeC), Université Paris-Sorbonne (UP4)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU), Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Muséum national d'Histoire naturelle (MNHN), IPEV (PR 1172), Deline P., Bodin X. and Ravanel L. (Eds.)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2018
• Subjects: Paraglacial; Coastal geomorphology; Kongsfjorden; Schmidt Hammer; [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology; [SHS.GEO]Humanities and Social Sciences/Geography; Kongsfjord*; Spitsbergen
• Online Access: https://hal.science/hal-01840237

International audience The aim of this study is to identify and quantify the controlling factors of rocky coasts evolution on the north shoreof the Brøgger peninsula, northwest Spitsbergen, from the Kvadehuken spit to the foot of the Haavimfjellet (fig. 1), in acontext of climate change (Artic warming) and geomorphological transition (from glacial and periglacial to paraglacialand paraperiglacial systems). The study areas have been study using several methodologies. Aerial photographs from1990 to 2010 have been used to quantify the evolution of top of the cliff and reveal a total loss area of -9752 m² with aretreat rate of -0,06 m/y. Schmidt hammer has been used to study the resistance variability on cliff faces and shows alower resistance in the top of the cliff face on most studied sites. Evolution of the cliff face has been studied usingphotogrammetry from 2016 to 2017 and a thermal camera has been used to highlight facies variability and areas ofweakness.