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The Arctic Coastal Dynamics Database: A New Classification Scheme and Statistics on Arctic Permafrost Coastlines |
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| Authors: | Hugues Lantuit Pier Paul Overduin Nicole Couture Sebastian Wetterich Felix Aré David Atkinson Jerry Brown Georgy Cherkashov Dmitry Drozdov Donald Lawrence Forbes Allison Graves-Gaylord Mikhail Grigoriev Hans-Wolfgang Hubberten James Jordan Torre Jorgenson Rune Strand ?deg?rd Stanislav Ogorodov Wayne H Pollard Volker Rachold Sergey Sedenko Steve Solomon Frits Steenhuisen Irina Streletskaya Alexander Vasiliev |
| Institution: | 1. Alfred Wegener Institute for Polar and Marine Research, Research Section Potsdam, Telgrafenberg A43, 14473, Potsdam, Germany 2. International Permafrost Association, Telegrafenberg A43, 14473, Potsdam, Germany 3. Northern Canada Division, Geological Survey of Canada, 601 Booth Street, Ottawa, ON, K1A 0E8, Canada 4. St. Petersburg State University, St. Petersburg, Russia 5. International Arctic Research Center, Fairbanks, AK, USA 6. VNIIOkeangeologia, St. Petersburg, Russia 7. Earth Cryosphere Institute, RAS, Moscow, Russia 8. Geological Survey of Canada, Dartmouth, NS, Canada 9. Nunatech Technologies, Anchorage, AK, USA 10. Melnikov Permafrost Institute, Yakutsk, Russia 11. Antioch University New England, Keene, NH, USA 12. ABR Inc, Fairbanks, AK, USA 13. Gjovik College, Gjovik, Norway 14. Moscow State University, Moscow, Russia 15. McGill University, Montr??al, QC, Canada 16. International Arctic Science Committee, Potsdam, Germany 17. Arctic Centre, University of Groningen, Groningen, The Netherlands |
| Abstract: | Arctic permafrost coasts are sensitive to changing climate. The lengthening open water season and the increasing open water area are likely to induce greater erosion and threaten community and industry infrastructure as well as dramatically change nutrient pathways in the near-shore zone. The shallow, mediterranean Arctic Ocean is likely to be strongly affected by changes in currently poorly observed arctic coastal dynamics. We present a geomorphological classification scheme for the arctic coast, with 101,447?km of coastline in 1,315 segments. The average rate of erosion for the arctic coast is 0.5?m? year?1 with high local and regional variability. Highest rates are observed in the Laptev, East Siberian, and Beaufort Seas. Strong spatial variability in associated database bluff height, ground carbon and ice content, and coastline movement highlights the need to estimate the relative importance of shifting coastal fluxes to the Arctic Ocean at multiple spatial scales. |
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