MagneticsGPH 492
John LouieSpring 2010
Sam Saunders, Todd Morine, Miles Kreidler, and Ryan Loux
Project Methods Data Results Sources of Error
Overview
Spring Break April 21-26 GPH 492 Field Exercise Magnetic Surveys of 4 transects completed
over 5 days◦ Hidden Valley North◦ Hidden Valley South◦ Prater◦ Whitewood
Project
One set of 2 magnetometers used◦ 1 Base station◦ 1 mobile station
Equipment was from 1980
Base station magnetometer broke after Day 2
Methods
Need for base station
Need for calibration of instrument
Methods, continued
Northing (m) Easting (m) Time Total Magnetic Field (nT) Noise (nT)
Data Collected
Not what we expected Instrument error suspected
Results
Results, continued
Results, continued
Results, continued
Instrument Error◦ Low Kerosene in magnetometer◦ Calibration needed?◦ Initial base station calibration
Local interference◦ Any metal objects◦ Power lines◦ Cellular phones
Sources of Error
Questions?