Organic carbon (OC) records can provide for a crucial and direct linkage between Holocene environmental variability, fluvial sediment export and the coastal sedimentological record. The stable and radiogenic isotopic records contained within organic-carbon compounds provide a powerful tool to understanding the sources and transfer times of sediment eventually deposited in the coastal system. Furthermore, the coastal zone has a large OC storage potential and is a region of flux between terrestrial and marine organic carbon reservoirs. It therefore plays a crucial role in the global recycling of organic carbon, a key driving factor in atmospheric CO2 levels and, thus, long-term climate. We are currently studying the bulk and compound-specific records of OC exported from the Ganges and Brahmaputra rivers (the largest sedimentary system on earth) to understand climate-driven variability in basin-integrated sediment supply and its likely feedback effects on the global carbon cycle.
Linked climate / landscape forcing of organic-carbon-export dynamics in the Ganges-Brahmaputra River system since the Last Glacial Maximum
High-resolution record of the dynamics of terrestrial organic carbon export to the Bay of Bengal
Please feel free to contact us for pdf copies of any of the following publications. Note: * - student author
Hein, C.J., Galy, V., Galy, A., France-Lanord, C., Kudrass, H., Schwenk, T., 2017, Post-glacial climate forcing of surface processes in the Ganges-Brahamaputra river basin and implications for carbon sequestration, Earth and Planetary Science Letters, v. 478, p. 89-101, doi: 10.1016/j.epsl.2017.08.013.
Galy, V., Hein, C., France-Lanord, C., Eglinton, T., 2014, The evolution of carbon signatures carried by the Ganges-Brahmaputra River system: a source-to-sink perspective, In: Bianchi, T., Allison, M., and Cai, W.-J. (eds), Biogeochemical Dynamics at Major River-Coastal Interfaces: Linkages with Global Change, Cambridge, England: Cambridge University Press, p. 353-372.
Abstracts & Presentations
Please feel free to contact us for pdf copies of any of the following abstracts or their associated presentations or posters.
Hein, C.J., Galy, V., France-Lanord, C., Galy, A., Kudrass, H., and Peucker-Ehrenbrink, B., 2016, Post-glacial climate forcing of surface processes in the Ganges-Brahmaputra basin and implications for the global carbon cycle, AGU Fall Meeting, San Francisco, CA, December 2016.
Galy, V., Hein, C.J. (presenter), Kudrass, H., Eglinton, T., Peucker-Ehrenbrink, B., 2014, INVITED, Climate forcing of the terrestrial organic carbon cycle during the last deglaciation: the Himalaya-Bengal fan example, GSA Abs. with Programs, vol. 46, no 6, abstract 248259.
Hein, C.J., Galy, V., Peucker-Ehrenbrink, B., Eglinton, T.I., 2012, Climatic forcing of organic-carbon-export dynamics from the Ganges-Brahmaputra River System, Eos Transactions, AGU, Fall Meeting Suppl., Abstract B13A-0469.
Galy, V., Hein, C.J., Peucker-Ehrenbrink, B., Eglinton, T.I., 2012, Dynamics of fluvial release of terrestrial organic carbon: climatic, geomorphologic or human forcing?, 5th International Workshop on Soil and Sedimentary Organic Matter: 7-11 October 2012, Zurich, Switzerland.
Hein, C.J., Galy, V., Peucker-Ehrenbrink, B., Eglinton, T.I., 2012, Preliminary evidence for a monsoonal forcing of the dynamics of terrestrial organic carbon export to the Bay of Bengal, Gordon Research Conference in Organic Geochemistry: 30 July – 3 August 2012, Plymouth, NH, USA.