对美国爱德华兹-巴尔科斯断裂带含水层地下水补给的气候弹性评估

IF 2.6 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL
Changbing Yang, F. Paul Bertetti
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引用次数: 0

摘要

本研究全面分析了爱德华兹-巴尔克内斯断裂带含水层圣安东尼奥段九个盆地补给区的降水、温度和地下水补给特征,该含水层是美国主要地下水系统之一,是得克萨斯州中南部约 170 万人的主要水源。月降水量和平均气温数据集(1895-2019 年)和地下水补给数据集(1934-2019 年)用于研究降水量、气温和地下水补给的十年变异性,年尺度为 20 年方差归一化移动平均值。对地下水补给的气候弹性(降水和潜在蒸散量)进行了估算,以评估气候变化对地下水补给的影响。研究结果表明,降水和温度变化呈现十年周期性模式。地下水补给弹性分析表明,年降水量变化 1%,可能导致地下水补给量变化 2%,变化范围为 0.15%-2.8%;年潜在蒸散量变化 1%,可能导致研究区域地下水补给量变化-3.3%,变化范围为-8.9%-4%。这项研究表明,地下水补给的气候弹性可为评估气候对含水层地下水补给的影响提供另一种方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Climate elasticity assessment on groundwater recharge to the Edwards Balcones Fault Zone Aquifer, United States

Climate elasticity assessment on groundwater recharge to the Edwards Balcones Fault Zone Aquifer, United States

This study presents a comprehensive analysis of the characteristics of precipitation, temperature, and groundwater recharge in the recharge zone of the nine basins of the San Antonio segment of the Edwards Balcones Fault Zone Aquifer, which is one of the major groundwater systems in the United States and serves as primary water sources for approximately 1.7 million people in south-central Texas. Datasets of monthly precipitation and average temperature (1895–2019) and groundwater recharge (1934–2019) are used to examine the decadal variability in precipitation, temperature, and groundwater recharge on the annual scale with a normalized 20-year moving average of variance. Climate elasticity (precipitation and potential evapotranspiration) of groundwater recharge is estimated to evaluate impacts of climate change on groundwater recharge. The results of this study show that precipitation and temperature variability exhibit decadal cyclic patterns. Elasticity analysis of groundwater recharge indicates that a 1% change in annual precipitation may result in 2%, with a likely range of 0.15%–2.8%, change in groundwater recharge, and a 1% change in annual potential evapotranspiration may lead to −3.3% change in groundwater recharge with a likely range of −8.9% to 4% in the study area. This study suggests that climate elasticity of groundwater recharge may provide an alternative means for evaluating climate impacts on groundwater recharge to an aquifer.

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来源期刊
Journal of The American Water Resources Association
Journal of The American Water Resources Association 环境科学-地球科学综合
CiteScore
4.10
自引率
12.50%
发文量
100
审稿时长
3 months
期刊介绍: JAWRA seeks to be the preeminent scholarly publication on multidisciplinary water resources issues. JAWRA papers present ideas derived from multiple disciplines woven together to give insight into a critical water issue, or are based primarily upon a single discipline with important applications to other disciplines. Papers often cover the topics of recent AWRA conferences such as riparian ecology, geographic information systems, adaptive management, and water policy. JAWRA authors present work within their disciplinary fields to a broader audience. Our Associate Editors and reviewers reflect this diversity to ensure a knowledgeable and fair review of a broad range of topics. We particularly encourage submissions of papers which impart a ''take home message'' our readers can use.
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