Evaluation of measurement methods for assessing vertical velocity in groundwater systems: a case study from Osongji (Osong Pond), Jeonju-si, South Korea

IF 2.8 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Hye-Na Ko, Seoyeong Oh, Yunjung Hyun, Hyoun-Tae Hwang, Kang-Kun Lee, Sung-Wook Jeen
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Abstract

The interaction between groundwater and surface water plays a crucial role in determining water quality and ecological health, highlighting the need for a comprehensive understanding to ensure effective water resource management. In this study, multiple methods—seepage meters, piezometers, and the type-curve fitting method using temperature profile data—were employed to estimate fluxes at the groundwater-surface water interface of a small pond (Osong Pond) in South Korea. Measurements were conducted and compared during the wet season of 2020 (July–August 2020). Additionally, temperature data were collected during the dry seasons of 2021 and 2022 (November 2021–March 2022) to assess the applicability of the type-curve fitting method for long-term monitoring. The average vertical velocity measured by seepage meters was the highest (2.67 × 10⁻8 m/s), while the type-curve fitting method estimated the lowest average velocity (2.58 × 10⁻10 m/s). During the dry seasons of 2021–2022, the type-curve fitting method yielded an average flow velocity of 7.11 × 10⁻10 m/s, comparable to the dry season values of 2020. Although the lakebed temperature-based method underestimated vertical velocities in this study area, it can be effective for long-term monitoring. We recommend combining multiple measurement techniques tailored to the geological characteristics (e.g., topography and sediment composition) and climatic conditions of study sites. This integrated approach facilitates a more accurate evaluation of groundwater-surface water interactions and enhances understanding of the broader flow system.

Abstract Image

评价地下水系统垂直流速的测量方法:以韩国全州五松池为例
地下水和地表水之间的相互作用在决定水质和生态健康方面起着至关重要的作用,突出表明需要全面了解以确保有效的水资源管理。本文采用渗透计、压力计和温度剖面数据类型曲线拟合等多种方法对韩国小池塘(五松塘)地下水-地表水界面的通量进行了估算。在2020年雨季(2020年7月至8月)进行了测量和比较。此外,还收集了2021年和2022年旱季(2021年11月- 2022年3月)的温度数据,以评估类型曲线拟合方法在长期监测中的适用性。渗漏计测得的平均垂直速度最高(2.67 × 10 - 8 m/s),而类型曲线拟合法估计的平均速度最低(2.58 × 10 - 10 m/s)。在2021-2022年的旱季,类型曲线拟合方法得出的平均流速为7.11 × 10 - 10 m/s,与2020年的旱季值相当。虽然基于湖床温度的方法低估了研究区域的垂直速度,但对于长期监测是有效的。我们建议结合多种测量技术,以适应研究地点的地质特征(如地形和沉积物组成)和气候条件。这种综合方法有助于更准确地评估地下水与地表水的相互作用,并增强对更广泛的流动系统的理解。
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来源期刊
Environmental Earth Sciences
Environmental Earth Sciences 环境科学-地球科学综合
CiteScore
5.10
自引率
3.60%
发文量
494
审稿时长
8.3 months
期刊介绍: Environmental Earth Sciences is an international multidisciplinary journal concerned with all aspects of interaction between humans, natural resources, ecosystems, special climates or unique geographic zones, and the earth: Water and soil contamination caused by waste management and disposal practices Environmental problems associated with transportation by land, air, or water Geological processes that may impact biosystems or humans Man-made or naturally occurring geological or hydrological hazards Environmental problems associated with the recovery of materials from the earth Environmental problems caused by extraction of minerals, coal, and ores, as well as oil and gas, water and alternative energy sources Environmental impacts of exploration and recultivation – Environmental impacts of hazardous materials Management of environmental data and information in data banks and information systems Dissemination of knowledge on techniques, methods, approaches and experiences to improve and remediate the environment In pursuit of these topics, the geoscientific disciplines are invited to contribute their knowledge and experience. Major disciplines include: hydrogeology, hydrochemistry, geochemistry, geophysics, engineering geology, remediation science, natural resources management, environmental climatology and biota, environmental geography, soil science and geomicrobiology.
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