The study demonstrates the potential of combined applications of geospatial (remote sensing and geographic information system (GIS)) and field‐based methods for studies of groundwater–surface water interactions and identification of groundwater discharge into shallow groundwater‐dominated lakes. Detailed ground‐based measurements of lake temperatures were conducted during summer 2002 in several groundwater‐fed lakes of the Nebraska Sand Hills (USA) and anomalously cool zones were identified. Analysis of 20 Landsat Thematic Mapper/Enhanced Thematic Mapper Plus (TM/ETM+) scenes taken under different weather conditions from 1989 to 2002 revealed two major seasonal patterns of lake temperature distribution. GIS analysis of field‐based data combined with Landsat TM/ETM+ data analysis allowed for the identification of lake zones with consistently cold temperatures which are inferred to be potential groundwater discharge zones.
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Document Type: Research Article
Department of Geosciences, University of Nebraska‐Lincoln, 214 Bessey Hall. Lincoln, NE 68588‐0340
Center for Advanced Land Management Information Technologies, School of Natural Resources, University of Nebraska–Lincoln, 102E Nebraska Hall. Lincoln, NE 68588‐0517
Publication date: 2005-09-10
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