| 台湾周遭之地下水入海 |
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| 引用本文： | 陈镇东,张劲,彭宗仁,KANDASAMY Selvaraj,雷佳,林毅杰. 台湾周遭之地下水入海[J]. 海洋学报(英文版), 2018, 37(6): 18-22. DOI: 10.1007/s13131-018-1216-2 |
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| 作者姓名： | 陈镇东 张劲 彭宗仁 KANDASAMY Selvaraj 雷佳 林毅杰 |
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| 作者单位： | 国立中山大学海洋科学系, 高雄804;国家海洋局第二海洋研究所, 卫星海洋环境动力学国家重点实验室, 杭州 310012,富山大学理学部, 生物圈环境科学科, 富山,国立中兴大学土壤环境科学系, 台中402,厦门大学, 近海海洋环境科学国家重点实验室, 厦门 361102,厦门大学, 近海海洋环境科学国家重点实验室, 厦门 361102,国立中山大学海洋科学系, 高雄804 |
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| 基金项目： | The Aim for the Top University Program of the Ministry of Education under contract No. 06C030203; the Ministry of Science and Technology of Taiwan under contract No. MOST 105-2611-M-110-017. |
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| 摘 要： | A preliminary study shows that the submarine groundwater discharge(SGD) exists around Taiwan even though groundwater overdrawing on the island is serious. Fifteen of the 20 sites studied for major anions and cations recorded a clear SGD signal with freshwater outflow. A total of 278 salinity and major ion measurements were made. Sixteen nearly freshwater SGD(salinity≤1.0) samples were obtained, providing strong and direct evidence for the existence of fresh meteoric groundwater entering the ocean from Taiwan. The total SGD flux is estimated to be 1.07×1010 t/a which is about 14% of the annual river output. The freshwater component of the SGD is3.85×109 t which is about 5.2% of the annual river discharge in Taiwan. The collected SGD has a composition similar to seawater with an addition of Ca, CO_3 and HCO_3 due to dissolution of calcareous rocks. Some samples with high Cl/(Na+K) may indicate pollution.
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| 关 键 词： | 地下水入海 台湾 通量 主要组成 海水入侵 |
| 收稿时间： | 2017-10-06 |
| 修稿时间： | 2018-03-20 |
Submarine groundwater discharge around Taiwan |
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| CHEN Chen-Tung Arthur,ZHANG Jing,PENG Tsung-Ren,KANDASAMY Selvaraj,WANG Deli and LIN Yi-Jie. Submarine groundwater discharge around Taiwan[J]. Acta Oceanologica Sinica, 2018, 37(6): 18-22. DOI: 10.1007/s13131-018-1216-2 |
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| Authors: | CHEN Chen-Tung Arthur ZHANG Jing PENG Tsung-Ren KANDASAMY Selvaraj WANG Deli LIN Yi-Jie |
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| Affiliation: | 1.Department of Oceanography,National Sun Yat-sen University, Kaohsiung 804,Taiwan,China;2.State Key Laboratory of Satellite Ocean Environmental Dynamics, Second Institute of Oceanography,State Oceanic Administration,Hangzhou,China;3.Environmental Biology and Chemistry, Graduate School of Science and Engineering,University of Toyama,Toyama,Japan;4.Department of Soil and Environmental Sciences,National Chung Hsing University,Taichung 402, Taiwan,China;5.State Key Laboratory of Marine Environmental Science,Xiamen University,Xiamen,China |
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| Abstract: | A preliminary study shows that the submarine groundwater discharge (SGD) exists around Taiwan even though groundwater overdrawing on the island is serious. Fifteen of the 20 sites studied for major anions and cations recorded a clear SGD signal with freshwater outflow. A total of 278 salinity and major ion measurements were made. Sixteen nearly freshwater SGD (salinity ≤ 1.0) samples were obtained, providing strong and direct evidence for the existence of fresh meteoric groundwater entering the ocean from Taiwan. The total SGD flux is estimated to be 1.07×1010 t/a which is about 14% of the annual river output. The freshwater component of the SGD is 3.85×109 t which is about 5.2% of the annual river discharge in Taiwan. The collected SGD has a composition similar to seawater with an addition of Ca, CO3 and HCO3 due to dissolution of calcareous rocks. Some samples with high Cl/(Na+K) may indicate pollution. |
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| Keywords: | submarine groundwater discharge Taiwan flux major components seawater intrusion |
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