When we start thinking this way, we quickly notice that there are two different heating effects that we need to look for. The first is a quick heat pulse from a single earthquake. The cumulative effect of lots of these heat pulses over the duration of the earthquake cycle would produce a much broader temperature anomaly.
The surface heat flow community is well aware of this broader scale heating but is essentially immune to the quick heat pulses. Because of the nature of fission track annealing, we should be able to record both effects.