The land measures of the Second Pandyan Empire was mentioned in

The Thalavaipuram copper plate, belonging to the period between 1018 and 1054 brought out by the Pandya kings, describes giant waves, most possibly a tsunami. And there is more hyperbole: the valiant Pandya kings “stopped” the tsunami. An earlier copper plate, the Seevaramangalam plate of 784 AD, also talks about a tsunami.