Characteristics of carbonate beach materials in Okinoerabu Island and southern part of Okinawa main island

• Main Authors: Nishi, Ryuichiro, Ikemasu, Takahiro, Hidaka, Masayasu, De Leon, Mario P.
• Format: text
• Published: Animo Repository 2009
• Subjects: Beaches—Japan—Okinawa Island; Beaches—Japan—Okinoerabu Island; Carbonate minerals—Japan—Okinawa Island; Carbonate minerals—Japan—Okinoerabu Island; Carbonate rocks—Japan—Okinawa Island; Carbonate rocks—Japan—Okinoerabu Island; Civil and Environmental Engineering
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/6199
• Institution: De La Salle University

Carbonate beaches has functions as shore protection and recreation zone to attract many tourists, thus the beaches should be properly sustained. This paper mainly deals with the character for carbonate beach materials such as grain size distribution of carbonate natural beach material and nourished beach material in Okinawa and Okinoerbu islands, because the origin and source of beach sediment should be identified to protect a carbonate beach. The study shows that most of beach material is originated and around a coral reef, thus a coral reef system should be preserved to supply the sediment on the beach.