What was a book written by the man who studied the surface rupture caused by the 1855 Wairarapa earthquake?
1855 Wairarapa earthquake The 1855 Wairarapa earthquake occurred on 23 January at about 9 p.m., affecting much of the Cook Strait area of New Zealand, including Marlborough in the South Island and Wellington and Wairarapa in the North Island. In Wellington, close to the epicenter, shaking lasted for at least 50 seconds. The moment magnitude is estimated to have been in the range 8.2–8.3, the most powerful recorded in New Zealand since systematic European colonisation began in 1840. This earthquake was associated with the largest observed movement on a strike-slip fault, maximum 18 m . It has been suggested that the surface rupture formed by this event helped influence Charles Lyell to link earthquakes with rapid movement on faults.
Aku-Aku Aku-Aku: the Secret of Easter Island is a 1957 book by Thor Heyerdahl published in English the following year. The book describes the 1955–1956 Norwegian Archaeological Expedition's investigations of Polynesian history and culture at Easter Island, the Austral Islands of Rapa Iti and Raivavae, and the Marquesas Islands of Nuku Hiva and Hiva Oa. Visits to Pitcairn Island, Mangareva and Tahiti are described as well. By far the greatest part of the book tells of the work on Easter Island, where the expedition investigated the giant stone statues ("moai"), the quarries at Rano Raraku and Puna Pau, the ceremonial village of Orongo on Rano Kau, as well as many other sites throughout the island. Much of the book's interest derives from the interaction of the expedition staff, from their base at Anakena beach, with the Easter Islanders themselves, who lived mainly in the village of Hanga Roa.