AEROMAGNETIC SURVEYS

EDCON-PRJ provides a comprehensive program of assistance to clients planning to conduct an aeromagnetic survey. This extends from the initial design of the survey through the final interpretation.

Design

To maximize the usefulness and value of an aeromagnetic survey, it must be appropriately designed to achieve a clearly defined purpose. Specifications must take into account known and anticipated geological factors, and consideration must be given to the compilation and leveling process. However, cost is always a major consideration, and a compromise usually must be made between the best specifications and the budget.

Because EDCON-PRJ has extensive experience in the processing and interpretations of aeromagnetic data, the company can provide invaluable guidance in the design of a survey. EDCON-PRJ can advise on flight line direction and spacing, flight elevation or drape, and tie lines to optimize the technical specifications within the limitations of a budget.

Contracting or Contracting Assistance

EDCON-PRJ can act either as a consultant to assist in the selection of an acquisition contractor or as a prime contractor. In the first case, EDCON-PRJ will help prepare RFP's, analyze proposals, and assist in negotiating contract terms. In the latter case, EDCON-PRJ will select an acquisition company, subject to the client's acceptance, and subcontract directly with that company to fly the survey.

QA/QC

EDCON-PRJ assures high quality data by contractually specifying minimum equipment parameters, maximum acceptable magnetic activity as recorded at a ground station, and maximum allowable locationing deviations.

Data Processing

EDCON-PRJ offers a full suite of modern processing from raw through final data. This includes careful data editing, differential GPS location correction and merge with the magnetic data, IGRF and magnetic base station correction, intersection calculation and leveling. The corrected data may then be reduced to a regular grid using either the minimum-curvature technique or EDCON-PRJ's equivalent source gridding. The data are then ready for mapping and interpretation.

Interpretations

EDCON-PRJ's mapping includes standard contour maps, grey-scale plots, shaded relief mapping, color maps, and superpositions of any of these. All maps carry complete annotation and reference ticks in latitude and longitude, projected map units, or both. Additional reference information, such as townships and ranges, well locations, or any other information required by the user, may be digitized and displayed on the maps.