Maybe you would like this reference better: http://arxiv.org/abs/1310.6514
Also, it wasn't just a one-time occurrence; it was common knowledge among contractors, as was the other effect referenced above.
Hi: I am a EE, but I have a question that I have searched for on the Internet and not found an answer. Contractors tell me that when it has been cold for several days and the sun comes out, that buried water lines that have not frozen all winter will suddenly freeze solid. It must be a real...