Comments about selected recession parameters

IF 2.6 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL Journal of The American Water Resources Association Pub Date : 2023-05-24 DOI:10.1111/1752-1688.13136
Albert T. Rutledge
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Abstract

Recession analysis can be used for qualitative comparisons between basins and for quantitative analysis involving the slope and the shape of the recession curve. The groundwater-level recession hydrograph can be used to derive an estimate of the hydraulic diffusivity of a surficial aquifer. The recession index can be obtained from streamflow data and from a formulation that includes aquifer properties. The analysis of the method reveals nonlinear recession which can result from the down-valley flow component, a dual-aquifer effect, and leakage to or from the aquifer. Important concepts include the dominant recession index and secondary recession characteristics which can affect low flow. Under conditions of down-valley flow, the cross-valley flow component tends to be important for determining recession characteristics, including hydraulic diffusivity and the recession index. These findings are relevant to another recession parameter a which is the distance from the stream to the hydrologic divide and results are supported by test simulations of a technique for estimating recharge.

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关于选定衰退参数的评论
衰退分析可用于流域之间的定性比较,也可用于涉及衰退曲线斜率和形状的定量分析。地下水位衰退水文图可用来估算表层含水层的水力扩散率。衰退指数可从溪流数据和包含含水层特性的公式中获得。对该方法的分析表明,非线性衰退可能是由下溪流成分、双重含水层效应以及含水层的渗漏造成的。重要的概念包括主导衰退指数和可能影响低流量的次级衰退特征。在顺水流条件下,跨水流成分往往对确定退水特征(包括水力扩散率和退水指数)很重要。这些发现与另一个衰退参数 a 有关,即从溪流到水文分界线的距离。
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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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