کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4740428 | 1641170 | 2012 | 9 صفحه PDF | دانلود رایگان |
We carried out an extensive waterborne GPR survey consisting of 50 profiles with a total length of nearly 37 km on the morainic lake of Candia northerly Turin (Italy). Our aim was to test the capability of GPR to estimate the bathymetry, the water volume and the sediment type. We enhanced and controlled the GPR data processing and interpretation with bathymetry acquired with an acoustic echo sounder and measured conductivity and temperature profile of the water column with a multiparametric probe. We also analyzed the diffraction hyperbola that originated within the sediments in order to estimate the velocity and relative permittivity. With the permittivity and dielectric mixing rules, we estimated the porosity of the sediments above the diffracting objects and drew a map of the bottom lake porosity.
► Waterborne GPR survey on a closed morainic lake.
► Estimation of the bathymetry and water volume.
► Identification of different types of bottom sediments.
► Estimation of the sediment porosity from sub-bottom diffraction hyperbola analysis.
Journal: Journal of Applied Geophysics - Volume 81, June 2012, Pages 48–56