Academic Journal
Changes in the burial efficiency and composition of terrestrial organic carbon along the Mackenzie Trough in the Beaufort Sea
| العنوان: | Changes in the burial efficiency and composition of terrestrial organic carbon along the Mackenzie Trough in the Beaufort Sea |
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| المؤلفون: | Kim D., Kim J. -H., Tesi T., Kang S., Nogarotto A., Park K., Lee D. -H., Jin Y. K., Shin K. -H., Nam S. -I. |
| المساهمون: | Kim, D., Kim, J. -H., Tesi, T., Kang, S., Nogarotto, A., Park, K., Lee, D. -H., Jin, Y. K., Shin, K. -H., Nam, S. -I. |
| سنة النشر: | 2022 |
| المجموعة: | Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
| مصطلحات موضوعية: | Beaufort sea, Lignin phenol, Mackenzie trough, n-alkane, Terrestrial organic carbon, δ13C, Δ14C, Settore GEO/02 - Geologia Stratigrafica e Sedimentologica |
| الوصف: | In this study, we investigated surface sediments collected along a Mackenzie Trough transect during the R/V Araon expeditions (ARA04C, ARA05C, and ARA08C) in the Beaufort Sea in 2013, 2014, and 2017. We applied various inorganic and organic geochemical tools (major elements, carbon and nitrogen contents, stable carbon and radiocarbon isotope compositions, and molecular biomarkers) in combination with sedimentological measurements (mineral surface area (SA) and grain size) to assess the source and burial characteristics of organic carbon (OC). In general, the sediment mean grain size decreased with water depth whereas the SA increased, resulting in a decrease in the OC loading and the burial efficiency of terrestrial OC. The sedimentary OC was further influenced by the loss of terrestrial OC and replacement with marine OC with increasing water depth. Accordingly, our results suggest that hydrodynamic sorting and degradation of terrestrial OC co-occurred together with the enrichment of marine OC with distance offshore. Such processes controlled the burial and reactivity of terrestrial OC along the Mackenzie Trough transect. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/WOS:000855095000005; volume:275; journal:ESTUARINE, COASTAL AND SHELF SCIENCE; https://hdl.handle.net/10278/5045063; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85135296528 |
| DOI: | 10.1016/j.ecss.2022.107997 |
| الاتاحة: | https://hdl.handle.net/10278/5045063 https://doi.org/10.1016/j.ecss.2022.107997 |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.AB5E7001 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.ecss.2022.107997 |
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