Locating Subsurface Features using Gravity and Magnetics

Sarah Kruse, University of South Florida
Andy Parsekian, University of Wyoming
Lee Slater, Rutgers University - Newark

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Initial Publication Date: June 23, 2023

Summary

This module introduces students to the fundamentals of exploring the subsurface with gravity and magnetism. Unit 1 provides a scaffolded introduction to locating buried objects with gravity. Unit 2 explores the major concepts involved in using magnetism to explore the environment. Unit 3 offers practical applications of the two methods using authentic data sets.

Students can also collect and analyze their own data using equipment your institution has access to or borrowed through EarthScope Primary Instrument Center (instructions for making an educational use request are on the EarthScope Geophysics Field Education page).

Strengths of the Module

Use of real data: Authentic datasets are used throughout the module, beginning with unit 1. This allows students to grapple with the challenges of real data sets, where there is an inherent element of ambiguity. It also shows students how geophysics is used in a real-world setting.

Connects students to the world around them: This module offers students new ways of developing an understanding of the buried subsurface structures that underlie their world. Many of these investigations can also be conducted using ubiquitous cell phone technology.

Flexibility: This module can be used as individual units or as a complete module. Unit exercises can be used as homework or in-class/lab assignments. Exercises can be completed individually or in small groups.