organic carbon

Extreme storm events, landscape denudation, and carbon sequestration: Typhoon Mindulle, Choshui River, Taiwan

Goldsmith, S. T.; Carey, A. E.; Lyons, W. B.; Kao, S. J.; Lee, T. Y.;
Chen, J. Extreme storm events, landscape denudation, and
carbon sequestration: Typhoon Mindulle, Choshui River, Taiwan.
Geology 2008, 36 (6), 483–486.

Abstract: 
We have performed the fi rst known semicontinuous monitoring of particulate organic carbon (POC) fl uxes and dissolved Si concentrations delivered to the ocean during a typhoon. Sampling of the Choshui River in Taiwan during Typhoon Mindulle in 2004 revealed a POC fl ux of 5.00 × 105 t associated with a sediment fl ux of 61 Mt during a 96 h period. The linkage of high amounts of POC with sediment concentrations capable of generating a hyperpycnal plume upon reaching the ocean provides the fi rst known evidence for the rapid delivery and burial of POC from the terrestrial system. These fl uxes, when combined with storm-derived CO2 consumption of 1.65 × 108 mol from silicate weathering, elucidate the important role of these tropical cyclone events on small mountainous rivers as a global sink of CO2.
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