Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts
| العنوان: | Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts |
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| المؤلفون: | Tommaso Tesi, George Tanski, Lisa Bröder, Hugues Lantuit, Jorien E. Vonk, Dirk Jong, Negar Haghipour, Michael Fritz, Timothy I. Eglinton |
| المساهمون: | Earth and Climate |
| المصدر: | EPIC3Geophysical Research Letters, Wiley, 47, ISSN: 0094-8276 Geophysical Research Letters, 47 (15) Jong, D, Bröder, L, Tanski, G, Fritz, M, Lantuit, H, Tesi, T, Haghipour, N, Eglinton, T I & Vonk, J E 2020, ' Nearshore Zone Dynamics Determine Pathway of Organic Carbon From Eroding Permafrost Coasts ', Geophysical Research Letters, vol. 47, no. 15, e2020GL088561, pp. 1-10 . https://doi.org/10.1029/2020GL088561 Geophysical Research Letters Geophysical Research Letters, 47(15):e2020GL088561, 1-10. American Geophysical Union |
| بيانات النشر: | American Geophysical Union, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Nearshore Processes, particulate organic carbon, 010504 meteorology & atmospheric sciences, Carbon Cycling, Biogeosciences, 010502 geochemistry & geophysics, Permafrost, 01 natural sciences, Carbon cycle, law.invention, Oceanography: Biological and Chemical, Arctic, law, carbon cycle, Research Letter, 14. Life underwater, Radiocarbon dating, SDG 14 - Life Below Water, Tundra, Permafrost, Cryosphere, and High‐latitude Processes, Arctic Region, 0105 earth and related environmental sciences, coastal erosion, Total organic carbon, Arctic and Antarctic oceanography, Sediment, Research Letters, Coastal erosion, nearshore zone, Oceanography: General, Geochemistry, Geophysics, Oceanography, 13. Climate action, General Earth and Planetary Sciences, Environmental science, Submarine pipeline, Other, Geographic Location, Cryosphere, Natural Hazards, Oceanography: Physical, permafrost |
| الوصف: | Collapse of permafrost coasts delivers large quantities of particulate organic carbon (POC) to Arctic coastal areas. With rapidly changing environmental conditions, sediment and organic carbon (OC) mobilization and transport pathways are also changing. Here, we assess the sources and sinks of POC in the highly dynamic nearshore zone of Herschel Island‐Qikiqtaruk (Yukon, Canada). Our results show that POC concentrations sharply decrease, from 15.9 to 0.3 mg L−1, within the first 100–300 m offshore. Simultaneously, radiocarbon ages of POC drop from 16,400 to 3,600 14C years, indicating rapid settling of old permafrost POC to underlying sediments. This suggests that permafrost OC is, apart from a very narrow resuspension zone ( Key Points Suspended particulate organic carbon (POC) sharply decreases in age and concentration within the nearshore zoneBeyond a narrow resuspension zone, permafrost‐derived OC dominates surface sediments, whereas much younger OC is found in the water columnPermafrost‐derived POC is rapidly removed from the water column, showing the critical role of nearshore dynamics for OC transport |
| وصف الملف: | application/pdf; application/application/pdf |
| اللغة: | English |
| تدمد: | 1944-8007 0094-8276 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ba980ad1cb98734580a97a5e30e3255 https://research.vu.nl/en/publications/f2b09e6b-feb0-4d9a-aab6-5542aa861f14 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....5ba980ad1cb98734580a97a5e30e3255 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19448007 00948276 |
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