Course Module: 15 – Optimum Gridding Spacing

This module illustrates the importance of acquiring gravity and magnetic data at the appropriate spacing, then gridding that data using a grid increment to capture the shortest appropriate wavelength (Nyquist frequency) without introducing longer wavelengths (aliasing). It will also be emphasized that even though there are numerous gridding algorithms, it is the interpreter’s responsibility to honor the data and keep its integrity intact by virtue of selecting the appropriate gridding method and parameters.

Learning Objectives

After completing this Module, you will be able to:
• Learn the importance of acquiring gravity and magnetic data at appropriate spacing.
• Understand what is the “Nyquist Frequency” and “Aliasing”.
• Learn more about software gridding packages.
• Describe the impact proper grid spacing selection can have when carefully chosen to honor the information from the datasets.

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