magnet: A single line of Project MAGNET horizontal field intensity
Description
The Project MAGNET mission
provided a wealth of airborne-magnetometer data
spanning the globe (Coleman, 1992).
This dataset represents a single track of horizontal field
intensities (a very small subset of the full collection!).
Raw and Clean Sets{
There are non-real data points in raw MAGNET series; these are
instrumental artefacts, and can severely affect
power spectral density (PSD) estimates.
A clean series has been included
so that a comparison of PSDs may be made.
Some command like subset(magnet, abs(mdiff) > 0)
can be used to identify the rows where edits have been made.
}
References
Coleman, R. J. (1992),
Project Magnet high-level vector survey data reduction.
In Types and Characteristics of Data for Geomagnetic Field Modeling,
3153, pp. 215-248.