The waves travel faster through cold rock and slower through hot rock. (livescience.com)
The reason for this intensity is that the East Coast, like the controversial New Madrid Seismic Zone in the central U.S., is located in amidst old faults and cold rocks in the middle of the North American tectonic plate. (discovermagazine.com)
For example, I once promoted Jackie Miles, author of Cold Rock River, during Bipolar Disorder Awareness Month because the she was diagnosed with Bipolar Disorder. (book-marketing-expert.com)