Mean grainsize of surface samples collected from the reef flat physiographic zone of Wistari Reef

Wistari Reef is a lagoonal platform reef, situated on the Tropic of Capricorn, within the Capricorn and Bunker region of the southern Great Barrier Reef. Five surface samples were taken from the reef-flats and analysed to determine mean grainsize and the sorting coefficient (expressed as the standard deviation of grainsize). Results indicate that the reef flat area has an average mean grainsize is ~0.19phi, with an average sorting coefficient of 0.58phi.威斯塔里礁（Wistari Reef）是一座潟湖型台礁，坐落于南回归线上，地处南大堡礁的摩羯-班克区域（Capricorn and Bunker region）。研究人员从该礁坪采集5件表层样品并开展分析，以测定其平均粒径与分选系数（分选系数以粒径标准差表征）。结果显示，该礁坪区域的平均粒径约为0.19phi，平均分选系数为0.58phi。