Autonomous long-term gamma-spectrometric monitoring of submarine groundwater discharge trends in Hawaii
Autonomous long-term gamma-spectrometric monitoring of submarine groundwater discharge trends in Hawaii
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DOI：
10.1007/s10967-015-4580-9
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发表时间：
2016-03-01
影响因子：
1.6
通讯作者：
Williamson, Mario
中科院分区：
文献类型：
--
作者：
Dulai, Henrietta;Kamenik, Jan;Williamson, Mario
我们研制了一台全自动水下伽马能谱仪，用于沿海海底地下水流量(SGD)的长期监测。与以前的海底伽马能谱仪相比，该仪器是一项重大改进，因为它非常坚固，具有高灵敏度，允许高时间分辨率，并且完全自主。在这里，我们描述了新仪器的技术参数以及在美国HI的Kiholo Bay部署9个月所收集的数据。我们还提供了将测量的活动转换为SGD比率的方法。在Kiholo Bay，得出的SGD与之前的估计相符，但除此之外，它还揭示了SGD以前没有记录的短期和长期模式。
We developed a fully autonomous underwater gamma-spectrometer for long-term coastal submarine groundwater discharge (SGD) monitoring. The instrument represents a significant improvement over previous submarine gamma-spectrometers in that it is very robust, has high sensitivity allowing high temporal resolution, and is completely autonomous. Here we describe the technical parameters of the new instrument as well as data collected over its 9-month deployment in Kiholo Bay, HI, USA. We also present methods to convert the measured activities to SGD rates. In Kiholo Bay, the derived SGD matched previous estimates but in addition it revealed previously undocumented short- and long-term patterns in SGD.