南海珊瑚礁人工岛淡水透镜体形成过程及影响因素
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韩冬梅, 曹国亮, 宋献方
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Formation processes and influencing factors of freshwater lens in artificial island of coral reef in South China Sea
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HAN Dongmei, CAO Guoliang, SONG Xianfang
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表2 全新世珊瑚砂和更新世礁灰岩不同渗透系数组合下淡水透镜体形成时间和体积
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Tab. 2 Formation time and maximum volume of fresh groundwater affected by different hydraulic conductivity of Holocene coral sand and Pleistocene limestone
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| 全新世珊瑚砂渗透系数(KHH)(m/d) | 更新世礁灰岩渗透系数(KHP)为500 m/d | | 更新世礁灰岩渗透系数(KHP)为1000 m/d | | 淡水透镜体开始形成时间(a) | 淡水透镜体最大厚度(m) | 淡水透镜体体积(万m3) | 淡水透镜体开始形成时间(a) | 淡水透镜体最大厚度(m) | 淡水透镜体体积(万m3) | | 5 | 1.64 | 22.5 | 4774.75 | | 1.72 | 19.5 | 4463.25 | | 10 | 1.47 | 22.5 | 3969.25 | | 1.84 | 20.5 | 3103.5 | | 20 | 1.7 | 20.5 | 2850.25 | | 1.75 | 19.5 | 2670.75 | | 30 | 1.54 | 21.5 | 2492.25 | | 1.64 | 19.5 | 2378.75 | | 40 | 1.52 | 20.5 | 2257.25 | | 1.53 | 19.5 | 2134 | | 50 | 1.51 | 20.5 | 2081.5 | | 1.53 | 18.5 | 1964.5 | | 60 | 1.51 | 20.5 | 1963 | | 1.52 | 18.5 | 1829.75 | | 70 | 1.47 | 19.5 | 1835.5 | | 1.48 | 18.5 | 1769.75 | | 80 | 1.49 | 19.5 | 1715.25 | | 1.49 | 19.5 | 1699.75 | | 90 | 1.46 | 18.5 | 1599 | | 1.46 | 18.5 | 1587.75 | | 100 | 1.43 | 17.5 | 1502.25 | | 1.43 | 17.5 | 1487.25 | | 150 | 1.44 | 14.5 | 1148.75 | | 1.43 | 14.5 | 1137.75 | | 200 | 1.42 | 12.5 | 958 | | 1.45 | 12.5 | 945.75 | | 300 | 1.43 | 8.5 | 633.5 | | 1.4 | 7.5 | 554.75 | | 400 | 1.43 | 6.5 | 387.75 | | 1.43 | 6.5 | 389.25 | | 500 | 1.45 | 4.5 | 194.5 | | 1.42 | 5.5 | 179.5 |
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