1887

Abstract

Geological Survey of Finland (GTK) had completed an airborne low altitude geophysical mapping survey covering the whole Finland. In recent years airborne data have been used in environmental applications related to landfill, groundwater and soil contamination. In this paper we present aerogeophysical studies of landfill areas in Finland. The first examples are from closed landfills, Mäntyvaara in north Finland and three landfills in Helsinki region. Mäntyvaara landfill was the first case in Finland, where AEM data were used for mapping contaminated areas. The other examples are monitoring cases. The airborne measurements have been conducted four times over the Ämmässuo and twice over the Metsä-Sairila landfills. Using GTK's three-in-one airborne system to locate possible leakages is a useful method. The AEM out-of-phase component is sensitive to detect small changes in conductivity. AEM modelling and inversion are useful tools for estimating detailed conductivity changes. Magnetic data can be used to interpret linear features of bedrock to detect possible path of leakages. Radiometric data can estimate soil thicknesses and the changes of moisture. The changes in the environment can be observed more reliably from natural condition if repeated measurements are carried out.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.20146261
2008-09-17
2024-03-28
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20146261
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error