Submarine groundwater discharge revealed by aerial thermal infrared imagery: a case study on Jeju Island, Korea
Submarine groundwater discharge revealed by aerial thermal infrared imagery: a case study on Jeju Island, Korea
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航空热红外图像揭示的海底地下水排放：韩国济州岛的案例研究
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Kyoochul Ha
中科院分区：
文献类型：
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作者：
Eunhee Lee;K. Kang;S. Hyun;K. Lee;Heesung Yoon;Seung;Yongcheol Kim;Zhen Xu;Duk‐jin Kim;D. Koh;Kyoochul Ha
海底地下水排放（SGD）是一种全球性现象，它将大量地下水和溶解的化学物质（如营养物质，金属和有机化合物）带到沿海地区。我们报告了SGD对韩国济州岛沿海沃茨的影响，使用高分辨率航空热红外（TIR）测绘技术和实地调查。使用具有成本效益的TIR相机实现了一个基于飞机的系统，用于航空TIR映射。对航空系统进行了地面校准和与GPS/IMU（全球定位系统/惯性测量单元）的系统集成。航空勘测显示，济州岛沿着存在明显的SGD低温特征，显示大量地下水从沿海含水层流入海洋。在一系列的季节和潮汐阶段的多个航空调查显示，SGD率动态影响海表温度（SST）的沿海地区。现场测量支持SGD对沿海水化学和SST有重大影响。我们的观察突出了航空TIR制图可以作为研究SGD和其他沿海过程的强大工具的程度。版权所有© 2016约翰威利父子有限公司.
Submarine groundwater discharge (SGD) is a global phenomenon that carries large volumes of groundwater and dissolved chemical species such as nutrient, metals, and organic compounds to coastal zones. We report the influence of SGD on the coastal waters of Jeju Island, Korea, using high‐resolution aerial thermal infrared (TIR) mapping techniques and field investigations. An aircraft‐based system was implemented using a cost‐effective TIR camera for aerial TIR mapping. Ground‐based calibrations and system integration with GPS/IMU (global positioning system/inertial measurement unit) were performed for the aerial systems. The aerial surveys showed distinct low‐temperature signatures of SGD along the coasts of Jeju Island, revealing large groundwater inputs from the coastal aquifers to the ocean. Multiple aerial surveys over a range of seasons and tidal stages revealed that SGD rates dynamically affect the sea surface temperature (SST) of the coastal zone. The in‐situ measurements supported that SGD has a substantial influence on the coastal water chemistry as well as SST. Our observations highlight the extent to which aerial‐based TIR mapping can serve as a powerful tool for studying SGD and other coastal processes. Copyright © 2016 John Wiley & Sons, Ltd.