Traditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions.
Traditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions.
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DOI：
10.1038/s41598-021-01920-0
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发表时间：
2021-11-19
影响因子：
4.6
通讯作者：
Fuleky P
中科院分区：
文献类型：
--
作者：
McKenzie T;Dulai H;Fuleky P
地下水是人类和依赖地下水的生态系统的重要资源。受陆地和海洋力量影响的沿海含水层和海底地下水流量越来越多地受到气候变化和海平面上升的影响。尽管如此，沿海地下水资源和排泄往往受到很差的限制，限制了我们对含水层对外力反应的了解。我们应用传统的和新颖的时间序列方法，使用以前未发表的分辨率和持续时间的SGD数据集，在一个模型站点(KīHolo Bay，HawaiʻI)分析降水、地下水位和SGD之间的相关性。我们的目标包括(1)确定SGD驱动因素在潮汐和季节性期间的相对贡献，(2)建立影响SGD的过程的时间关系和阈值，以及(3)评估热带风暴等异常事件对SGD的影响。例如，这一分析表明，降水只在雨季起主导作用，否则潮汐和海浪决定了SGD的动态。它还提供了强烈风暴事件和较高的SGD率之间的时间滞后，以及影响SGD的降水量、波高和潮汐的阈值。总体而言，我们展示了一种模拟水文系统的方法，同时以前所未有的详细程度阐明沿海含水层和SGD的响应。
Groundwater is a vital resource for humans and groundwater dependent ecosystems. Coastal aquifers and submarine groundwater discharge (SGD), both influenced by terrestrial and marine forces, are increasingly affected by climate variations and sea-level rise. Despite this, coastal groundwater resources and discharge are frequently poorly constrained, limiting our understanding of aquifer responses to external forces. We apply traditional and novel time-series approaches using an SGD dataset of previously unpublished resolution and duration, to analyze the dependencies between precipitation, groundwater level, and SGD at a model site (Kīholo Bay, Hawaiʻi). Our objectives include (1) determining the relative contribution of SGD drivers over tidal and seasonal periods, (2) establishing temporal relationships and thresholds of processes influencing SGD, and (3) evaluating the impacts of anomalous events, such as tropical storms, on SGD. This analysis reveals, for example, that precipitation is only a dominant influence during wet periods, and otherwise tides and waves dictate the dynamics of SGD. It also provides time lags between intense storm events and higher SGD rates, as well as thresholds for precipitation, wave height and tides affecting SGD. Overall, we demonstrate an approach for modeling a hydrological system while elucidating coastal aquifer and SGD response in unprecedented detail.
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影响因子：
13.6
作者：
Attias E;Thomas D;Sherman D;Ismail K;Constable S
通讯作者：
Constable S
影响因子：
3.6
作者：
Dimova, Natasha T.;Swarzenski, Peter W.;Glenn, Craig R.
通讯作者：
Glenn, Craig R.
DOI：
10.1007/s10967-015-4580-9
发表时间：
2016-03-01
影响因子：
1.6
作者：
Dulai, Henrietta;Kamenik, Jan;Williamson, Mario
通讯作者：
Williamson, Mario
影响因子：
8
作者：
Giambelluca, Thomas W.;Chen, Qi;Delparte, Donna M.
通讯作者：
Delparte, Donna M.
影响因子：
4.5
作者：
Hwang, DW;Lee, YW;Kim, G
通讯作者：
Kim, G