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

Abstract : The aim of this study is to identify and quantify the controlling factors of rocky coasts evolution on the north shore of the Brøgger peninsula, northwest Spitsbergen, from the Kvadehuken spit to the foot of the Haavimfjellet (fig. 1), in a context of climate change (Artic warming) and geomorphological transition (from glacial and periglacial to paraglacial and paraperiglacial systems). The study areas have been study using several methodologies. Aerial photographs from 1990 to 2010 have been used to quantify the evolution of top of the cliff and reveal a total loss area of -9752 m² with a retreat rate of -0,06 m/y. Schmidt hammer has been used to study the resistance variability on cliff faces and shows a lower resistance in the top of the cliff face on most studied sites. Evolution of the cliff face has been studied using photogrammetry from 2016 to 2017 and a thermal camera has been used to highlight facies variability and areas of weakness.
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https://hal.archives-ouvertes.fr/hal-01840237
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Submitted on : Monday, July 16, 2018 - 1:43:15 PM
Last modification on : Wednesday, May 15, 2019 - 3:56:13 AM

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  • HAL Id : hal-01840237, version 1

Citation

Marine Bourriquen, Denis Mercier, Agnès Baltzer, Stéphane Costa, Jérôme Fournier. Rocky coasts evolution on the Brøgger peninsula (Spitsbergen): control and variability. 5th European Conference On Permafrost (EUCOP5), Jun 2018, Chamonix, France. pp. 794-795. ⟨hal-01840237⟩

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