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AGU: Geophysical Research Letters

 

Keywords

  • thermocline
  • georadar
  • lake

Index Terms

  • Biogeosciences: Limnology
  • Exploration Geophysics: Instruments and techniques
  • Hydrology: Hydrogeophysics
  • Exploration Geophysics: Data processing
  • Electromagnetics: Wave propagation

Abstract

Imaging thermal stratigraphy in freshwater lakes using georadar

John H. Bradford

Department of Geosciences, Boise State University, Boise, Idaho, USA

Cody R. Johnson

Department of Watershed Sciences, Utah State University, Logan, Utah, USA

Troy Brosten

Department of Geosciences, Boise State University, Boise, Idaho, USA

James P. McNamara

Department of Geosciences, Boise State University, Boise, Idaho, USA

Michael N. Gooseff

Department of Civil and Environmental Engineering, Pennsylvania State University, University Park, Pennsylvania, USA

Thermal stratification exerts significant control over biogeochemical processing in freshwater lakes. Thus, the temporal and spatial distribution of the thermal structure is an important component in understanding lake ecosystems. We present the first reported observations of lake thermal stratification from surface based georadar measurements acquired over two small freshwater lakes. This method is very useful because it can provide rapid acquisition of 2D or 3D lotic stratification.

Received 31 October 2007; accepted 20 November 2007; published 25 December 2007.

Citation: Bradford, J. H., C. R. Johnson, T. Brosten, J. P. McNamara, and M. N. Gooseff (2007), Imaging thermal stratigraphy in freshwater lakes using georadar, Geophys. Res. Lett., 34, L24405, doi:10.1029/2007GL032488.

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