Isotopic Analysis and Cycling of Dissolved Inorganic Carbon at Lake Biwa, Central Japan
Isotopic Analysis and Cycling of Dissolved Inorganic Carbon at Lake Biwa, Central Japan
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日本中部琵琶湖溶解无机碳的同位素分析和循环
DOI：
10.1017/s0033822200018907
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发表时间：
1997
期刊：
影响因子：
8.3
通讯作者：
W. Kretschmer
中科院分区：
文献类型：
--
作者：
Toshio Nakamura;S. Kojima;T. Ohta;H. Oda;A. Ikeda;M. Okuno;K. Yokota;Y. Mizutani;W. Kretschmer
本文报道了自1995年春季以来，在日本中部琵琶湖四个地点和几个深度采集的水样中溶解无机碳（DIC）的浓度和碳同位素结果。DIC浓度和DIC δ13C深度剖面表现出较强的季节性特征，主要表现为冬季和早春湖水垂直混合，其他季节不混合。DIC∆14C深度剖面没有明显的季节变化，主要是由于DIC∆14C分布较广。典型的DIC浓度范围为0.47 ~ 0.65 mmol kg-1，琵琶湖水体DIC∆13C和DIC∆14C分别为-4 ~ -8‰和+10 ~ +80‰。
This paper reports on concentrations and carbon isotopic results of dissolved inorganic carbon (DIC) in water samples collected at four locations and from several depths in Lake Biwa, central Japan, covering every season of the year, starting in the spring of 1995. Depth profiles of DIC concentration and DIC δ13C showed a strong seasonal pattern, as a result of vertical mixing of the lake water in winter and early spring, or lack of mixing in the other seasons. No seasonal change in DIC ∆14C depth profiles was recognizable, mainly owing to the wide scatter of DIC ∆14C. Values typically ranged from 0.47 to 0.65 mmol kg-1 for DIC concentration, and from -4 to -8‰ and from +10 to +80‰ for DIC ∆13C and DIC ∆14C, respectively, for the Lake Biwa water.
影响因子：
8.3
作者：
STUIVER, M;POLACH, HA
通讯作者：
POLACH, HA