  Let $\cT$ be Teichm\"uller space of a closed surface of genus at least 2. For
any point $c\in \cT$, we describe an action of the circle on $\cT\times \cT$,
which limits to the earthquake flow when one of the parameters goes to a
measured lamination in the Thurston boundary of $\cT$. This circle action
shares some of the main properties of the earthquake flow, for instance it
satisfies an extension of Thurston's Earthquake Theorem and it has a complex
extension which is analogous and limits to complex earthquakes. Moreover, a
related circle action on $\cT\times \cT$ extends to the product of two copies
of the universal Teichm\"uller space.
