Beach Changes on Oahu as Revealed by Aerial Photographs

摘要

An aerial photographic analysis of the beaches of Oahu was conducted for a period of up to 50 years. The results indicate that the most unstable beaches are on sand bodies projecting from the coastline, such as Kualoa Point, Iroquois Point, and Paiko Peninsula. Beach changes on Oahu can be characterized by the coastline. On the north shore, intermittent erosion occurs when the beach is overwashed by waves of unusual height and force. Aerial photographs record the effects of the Decemeber 1-4, 1969 storm, 1946 tsunami and possibly the 1957 tsunami.