Data-driven models of groundwater salinization in coastal plains

JOURNAL OF HYDROLOGY

卷:531

Article

Felisa, G.¹  Ciriello, V.¹  Antonellini, M.²  Di Federico, V.¹  Tartakovsky, D. M.³ 

[1] Univ Bologna, Dept Civil Chem Environm & Mat Engn, I-40126 Bologna, Italy

[2] Univ Bologna, Dept Biol Geol & Environm Sci, I-40126 Bologna, Italy

[3] Univ Calif San Diego, Dept Mech & Aerosp Engn, San Diego, CA 92103 USA

关键词: Statistical model;    Aquifer management;    Time series;    Data analysis;   

DOI  :  10.1016/j.jhydrol.2015.07.045

来源: Elsevier

【 摘 要 】

Salinization of shallow coastal aquifers is particularly critical for ecosystems and agricultural activities. Management of such aquifers is an open challenge, because predictive models, on which science-based decisions are to be made, often fail to capture the complexity of relevant natural and anthropogenic processes. Complicating matters further is the sparsity of hydrologic and geochemical data that are required to parameterize spatially distributed models of flow and transport. These limitations often undermine the veracity of modeling predictions and raise the question of their utility. As an alternative, we employ data-driven statistical approaches to investigate the underlying mechanisms of groundwater salinization in low coastal plains. A time-series analysis and auto-regressive moving average models allow us to establish dynamic relations between key hydrogeological variables of interest. The approach is applied to the data collected at the phreatic coastal aquifer of Ravenna, Italy. We show that, even in absence of long time series, this approach succeeds in capturing the behavior of this complex system, and provides the basis for making predictions and decisions. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

Free