Abstract

Progress in airborne gradiometer instrumentation has advanced to the point that procedures for determining corrections for the variable effects of topography merit consideration. An approximate practical method, based on real–time recording of flight elevation and variable terrain clearance as a function of position along the flight line, appears to be appropriate for the purpose. The procedure is similar to that for determing topographic corrections for airborne gravity published previously by the author in Geophysics (Hammer, 1974a).

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