guideline and standards for skytem measurements, processing and ...

2 INTRODUCTION
This report is a translation of the Danish version of the “Guideline and standards
for SkyTEM measurements, processing and inversion”. The intention is to keep
the English version up-to-date with the Danish version. The Danish version is
valid for the partners involved in SkyTEM surveys in Denmark.
The helicopter-borne transient electromagnetic measurement method, SkyTEM,
is the leading geophysical method used for groundwater mapping in Denmark.
This guideline was made as a quality assurance measure to ensure the quality
of the procedures performed during SkyTEM data collection and processing.
The standards presented herein are tailored to Danish geological conditions and
to local Danish requirements concerning data quality and inversion.
The manual is comprised by two main sections: Data collection, validation and
documentation are detailed in sections 3-5. Processing, inversion and reporting
to GERDA are described in sections 6-8. Furthermore, the manual contains a
number of appendices detailing various instrumentation and processing
parameters. These appendices may be useful in connection with the drafting of
agreements.
As the measurement equipment and inversion software are improved over time,
the manual will be updated, as needed.
The requirements to field work and data processing presented in the manual are
standard requirements. In case these requirements cannot be met, the reasons
for this shall be stated clearly in the final report and, where relevant, the involved
parties shall be informed. The guideline also provides a number of
recommended processing and inversion settings.
The guideline was circulated for comment in GEUS and among consulting
engineers. All interested parties were invited to a meeting held at the
Department of Earth Sciences in January 2010.
Please note that the percentages provided in section 4.3 are presently
instructive only. Final determination of the percentages presupposes thorough
investigation.
Version 2.0 of the manual came into force on 15 February 2010. The newest
version is available from the web page of the HydroGeophysics Group:
www.gfs.au.dk
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