Japan Geoscience Union Meeting 2025

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[O-11] Senior high school student poster presentations

Sun. May 25, 2025 1:45 PM - 3:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

convener:Tatsuhiko Hara(International Institute of Seismology and Earthquake Engineering, Building Research Institute), Keiko Konya(Japan Agency for Marine-Earth Science and Technology), Chieko Suzuki(Japan Agency for Marine-Earth Science and Technology), RYO NAKANISHI(National Institute of Advanced Industrial Science and Technology)


1:45 PM - 3:15 PM

[O11-P90] Climate-Related Variations in Coral Growth Rates on Kikai Island, Japan

*Miyu Higuchi1,2 (1.Kikai high school/SANGO RYUGAKU, 2.KIKAI institute for Coral Reaf Sciences)

Keywords:Coral growth, Island shape, Environment, Climate

Previous research investigated how differences in climate conditions across Kikai Island affect coral growth rates. In the northern part of the island, where strong north winds and wave activity are common, coral tended to grow more slowly. Fossil corals of the same species and approximate age were collected from multiple locations around the island. Using CT imaging and image processing software, the width of growth rings was measured. The results showed that coral growth was slowest in Sakamine and Onotsu, and fastest in Hanareba. Future research will focus on coral samples from terraces of different ages and from the southwest direction to explore the relationship between wind patterns, coral growth, and the island’s geological formation.