Spatial distribution of δD-δ18O values of surface and shallow groundwaters from Japan, south Korea and east China

Spatial distribution of δD-δ18O values of surface and shallow groundwaters from Japan, south Korea and east China
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日本、韩国及中国东部地表水及浅层地下水δD-δ18O值空间分布

DOI:
10.2343/geochemj.28.387
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发表时间:
1994
影响因子:
0.8
通讯作者:
M. Kusakabe
M. Kusakabe
中科院分区:
地球科学4区
文献类型:
--
作者:
C. Mizota;M. Kusakabe

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在已有的600多项分析资料的基础上,分别绘制了日本、韩国和中国东部地区地表水和浅层地下水δD和δ 18O的空间分布图,并绘制了δD和δ18O的10 ‰和1‰等值线图。δD和δ18O值一般随纬度的升高而降低。沿着太平洋暖流黑潮,δD和δ18O值从日本西南部沿海向内陆呈系统性递减,其等值线间距较近。在日本中部、北方和我国东部内陆山区观测到δD和δ 18 O低值。这些趋势与以前在北美大陆观察到的趋势类似。该图将为水文、水岩作用、自生矿物沉淀等与大气降水有关的地球化学过程的研究提供基础资料。
Spatial distribution of δD and δ18O values of surface water and shallow groundwaters from Japan, south Korea and east China was mapped with contours of 10 and 1‰ intervals for δD and δ18O, respectively, on the basis of the data base including more than 600 analyses made in the present and previous studies. The δD and δ18O values generally decrease with increasing the latitude. There is a systematic decrease in δD and δ18O values with contours of close intervals from the coast toward inland of southwestern Japan along the stream of the Kuroshio, a warm current in the Pacific Ocean. The δD and δ18O lows are observed in mountainous inland of central and northern Japan and east China. The trends are comparable with those observed previously for the North American continent. The map will provide fundamental information for the studies of geochemical processes such as hydrology, water-rock interaction, and precipitation of authigenic minerals in which meteoric water is involved.
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