基于水文地球化学分析、多元统计和稳定同位素的希腊中部复杂水文盆地(Kopaida盆地)地下水资源表征与评价

IF 1.7 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS
Evangelos P. Tziritis, Partha S. Datta, Rahim Barzegar
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引用次数: 34

摘要

利用水文地球化学分析、多元统计和稳定同位素等不同方法的综合评估,对希腊中部一个非均质含水层系统的地下水资源进行了表征,并对整体环境状况进行了评估。结果概述了地下水化学的主要控制因素,并圈定了地下水流动的主要途径。综合评价结果表明,水文地球化学同时受到地质和人为因素的影响,包括?地质基质、激烈的农业活动和持续的地球化学过程影响氧化还原敏感剂如NO3、Fe、Mn和SO4的浓度。稳定同位素评价通过提供非均质含水层系统水动力学的关键信息来补充上述评价。蒸发是影响水资源同位素组成的主要因素,此外,厚不饱和带的缓慢渗透速率也是影响水资源同位素组成的主要因素。地表水和地下水样品的δ 18Ο和δ d值的比较表明,通过发育的岩溶网络和/或高渗透率的河床,水系统之间存在相互作用。最后,以Kopaida盆地为例,成功地将多种方法的综合概念方法应用于水文地质和水文地球化学评价的确定;在需要时相互确认和补充评价,从而为战略规划和水资源管理提供必要的资料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Characterization and Assessment of Groundwater Resources in a Complex Hydrological Basin of Central Greece (Kopaida basin) with the Joint Use of Hydrogeochemical Analysis, Multivariate Statistics and Stable Isotopes

Characterization and Assessment of Groundwater Resources in a Complex Hydrological Basin of Central Greece (Kopaida basin) with the Joint Use of Hydrogeochemical Analysis, Multivariate Statistics and Stable Isotopes

Combined assessments from different methodologies, including hydrogeochemical analysis, multivariate statistics and stable isotopes, were used in order to characterize the groundwater resources of a heterogeneous aquifer system in central Greece and to evaluate the overall environmental regime. Results outlined the driving factors that chiefly control groundwater chemistry and delineated the major pathways of groundwater flow. Following the results of the combined assessments, hydrogeochemistry is influenced both by geogenic and anthropogenic factors including?the geological substrate, intense agricultural activities and ongoing geochemical processes which impact the concentrations of redox sensitive agents like NO3, Fe, Mn and SO4. Stable isotope evaluations supplemented the above assessments by providing critical information for the hydrodynamics of the heterogeneous aquifer system. Evaporation is the main factor influencing the isotopic composition of water resources, in addition to the slow percolation rates of the thick unsaturated zone. Comparisons between δ 18Ο and δD values for surface and groundwater samples revealed an interaction among water systems through the developed karstic network and/or the riverbeds of higher permeabilities. Eventually, the integrated conceptual approach of diverse methodologies was applied successfully for the identification of hydrogeological and hydrogeochemical assessments in the case of Kopaida basin; evaluations were cross-confirmed and supplemented when needed, hence providing essential information for strategic planning and water resources management.

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来源期刊
Aquatic Geochemistry
Aquatic Geochemistry 地学-地球化学与地球物理
CiteScore
4.30
自引率
0.00%
发文量
6
审稿时长
1 months
期刊介绍: We publish original studies relating to the geochemistry of natural waters and their interactions with rocks and minerals under near Earth-surface conditions. Coverage includes theoretical, experimental, and modeling papers dealing with this subject area, as well as papers presenting observations of natural systems that stress major processes. The journal also presents `letter''-type papers for rapid publication and a limited number of review-type papers on topics of particularly broad interest or current major controversy.
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