Because many people mistakenly think a tsunami is a single wave, some return to the beach after the first wave hits, Lopes said. On March 11, 2011, a man in Klamath River, Calif., died after he was swept away by a second wave while taking pictures of the Japan tsunami, Lopes said.
Principate. The Principate is the first period of the Roman Empire, extending from the beginning of the reign of Augustus Caesar to the Crisis of the Third Century, after which it was replaced with the Dominate.
1 resignation of Augustus (in ancient Rome: The establishment of the principate under Augustus)  role in Roman Republic (in Roman Republic (ancient state [509 bc-27 bc]): The early historical record) (in ancient Rome: The consulship) (in ancient Rome: Citizenship and politics in the middle republic)