Mapping and quantifying groundwater discharge to Lake Steiling and its influence on lake water chemistry

被引：3

作者：

Gilfedder, Benjamin ^{[1
,3
]}

Peiffer, Stefan ^{[3
]}

Poeschke, Franziska ^{[2
]}

Spirkaneder, Andrea ^{[1
]}

机构：

[1] Univ Bayreuth, Limnol Forsch Stn, Univ Str 30, D-95447 Bayreuth, Germany

[2] Landesanstalt Umwelt Messungen & Naturschutz Bade, Inst Seeforsch, D-88085 Langenargen, Germany

[3] Univ Bayreuth, Bayreuth Ctr Ecol & Environm Res Bayceer, Lehrstuhl Hydrol, D-95447 Bayreuth, Germany

来源：

GRUNDWASSER | 2018年 / 23卷 / 02期

关键词：

Groundwater-lake interaction; Radon as a tracer; Groundwater and lake chemistry; Groundwater mapping in lakes; SURFACE-WATER; MASS-BALANCE; EXCHANGE; RN-222; SEEPAGE; TRACER; RADON; QUANTIFICATION; INFLOW; BUDGET;

D O I：

10.1007/s00767-017-0386-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Groundwater can play an important role in lake water and chemical budgets. The aim of this study was to map and quantify groundwater discharge to Lake Steilingen, a small lake in south-west Germany, using Rn as a natural groundwater tracer. 222Rn, nutrients, temperature and oxygen concentration were measured in depth profiles and in sediment-near water samples during April and June 2016. The spatial distribution of Rn activities (max. 944Bqm-3) showed that groundwater discharges into the middle of the lake and along the northeastern shore from springs in the hypolimnion (11-14m depth). Based on a Rn mass-balance groundwater accounts for 70% of the total water input (GWflux= 11ls-1) to the lake. There were significant positive correlations between methane and nitrite with Rn activity, suggesting the groundwater as a common source. Overall the inflow of groundwater causes a deterioration in lake water quality.

引用

页码：155 / 165

页数：11

共 46 条

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