Abstract
A supervised convolutional neural network (CNN) was developed to
automatically identify electromagnetic ion cyclotron (EMIC) wave events
from spectrograms. These events have usually been identified manually,
which can be a time-consuming process. Statistical analyses of larger
datasets would be facilitated if this process were simplified. The
neural network model was trained on spectrogram images from the Halley
magnetometer station that had been manually identified as either
containing or not containing an EMIC wave event anywhere in the
spectrogram. This model was tested on an unseen set of spectrograms,
achieving a perfect true positive rate of 1. Size, time, frequency, and
pixel color information was extracted from each identified event and
exported into a spreadsheet for easier analysis. This method has the
capability of reducing time and effort required to identify important
spectrogram features by hand. Such an automated method could be applied
to other space weather data stored in spectrograms.