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Dissolved Inorganic Carbon Export from Carbonate and Silicate Catchments Estimated from Carbonate Chemistry and Δ13CDic : Volume 15, Issue 8 (16/08/2011)

By Shin, W. J.

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Book Id: WPLBN0003988920
Format Type: PDF Article :
File Size: Pages 10
Reproduction Date: 2015

Title: Dissolved Inorganic Carbon Export from Carbonate and Silicate Catchments Estimated from Carbonate Chemistry and Δ13CDic : Volume 15, Issue 8 (16/08/2011)  
Author: Shin, W. J.
Volume: Vol. 15, Issue 8
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Lee, K. S., Lee, D., Chung, G. S., & Shin, W. J. (2011). Dissolved Inorganic Carbon Export from Carbonate and Silicate Catchments Estimated from Carbonate Chemistry and Δ13CDic : Volume 15, Issue 8 (16/08/2011). Retrieved from http://hawaiilibrary.net/


Description
Description: Department of Geology and Earth Environmental Sciences, Chungnam National University, Daejeon, 305-764, Republic of Korea. This work presents a study of the dissolved inorganic carbon (DIC) exchange associated with groundwater discharge and stream flow from two upstream catchments with distinct basement lithologies (silicate vs. carbonate). The effects of catchment lithology were evident in the spring waters showing lower Δ13CDIC and alkalinity (−16.2 ± 2.7 ‰ and 0.09 ± 0.03 meq l−1, respectively) in the silicate and higher values (−9.7 ± 1.5 ‰ and 2.0 ± 0.2 meq l−1) in the carbonate catchment. The streams exhibited relatively high Δ13CDIC, −6.9 ± 1.6 ‰ and −7.8 ± 1.5 ‰, in silicate and carbonate catchments, respectively, indicating CO2 degassing during groundwater discharge and stream flow. The catchment lithology affected the pattern of DIC export. The CO2 degassing from stream and groundwater could be responsible for 8–55 % of the total DIC export in the silicate catchment, whereas the proportion is comparatively low (0.4–5.6 %) in the carbonate catchment. Therefore, the dynamic carbon exchange occurring at headwater regions and its possible variability with catchment lithology need to be examined for a more reliable carbon budget in river systems.

Summary
Dissolved inorganic carbon export from carbonate and silicate catchments estimated from carbonate chemistry and Δ13CDIC

Excerpt
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