CAJ | 학술논문

珊瑚生长率是记录海水表层温度(SST)的一个重要代用指标.本文以南海中北部西沙永兴岛罗马暖期期间发育的3个澄黄滨珊瑚(Porites lutea)为材料,测量它们的骨骼生长率,并利用珊瑚骨骼生长率与SST的关系式定量重建海温年际变化序列.结果显示:3个滨珊瑚(生长于120-59 BC、46 BC-14 AD和30 BC-28 AD期间)的平均生长率分别为0.88 cm/a(变化于0.53~1.24 cm/a之间)、0.90 cm/a(变化于0.58~1.53 cm/a之间)和1.12 cm/a (变化于0.71~1.46 cm/a之间).据此重建同时段年平均SST,相应结果分别为26.7℃、26.8℃和27.3℃.2 kaBP前后(120-59 BC,46 BC-28 AD)西沙海域平均SST为26.9±0.4℃,低于现代(1981-2010 AD)约0.7℃.
산호생장솔시기록해수표층온도(SST)적일개중요대용지표.본문이남해중북부서사영흥도라마난기기간발육적3개징황빈산호(Porites lutea)위재료,측량타문적골격생장솔,병이용산호골격생장솔여SST적관계식정량중건해온년제변화서렬.결과현시:3개빈산호(생장우120-59 BC、46 BC-14 AD화30 BC-28 AD기간)적평균생장솔분별위0.88 cm/a(변화우0.53~1.24 cm/a지간)、0.90 cm/a(변화우0.58~1.53 cm/a지간)화1.12 cm/a (변화우0.71~1.46 cm/a지간).거차중건동시단년평균SST,상응결과분별위26.7℃、26.8℃화27.3℃.2 kaBP전후(120-59 BC,46 BC-28 AD)서사해역평균SST위26.9±0.4℃,저우현대(1981-2010 AD)약0.7℃.
The skeletal growth rates of Porites corals are important indicators of ambient sea surface temperatures (SST). Three Porites corals collected from Yongxing Island, Xisha Islands, dated to 120-59 BC, 46 BC-14 AD and 30 BC-28 AD respectively, were analyzed for skeletal growth rates to reconstruct the local SST variations in the Rome Warm Period. The mean values of their growth rates were 0.88 cm/a, 0.90 cm/a and 1.12 cm/a, ranging from 0.53-1.24 cm/a, 0.58-1.53 cm/a, and 0.71-1.46 cm/a, respectively. The reconstructed average annual SST were 26.7℃, 26.8℃ and 27.3℃ respectively. The average SST in the Xisha Islands was 26.93±0.41℃ during the Rome Warm Period (120-59BC,46BC-28AD), 0.7℃ lower than the mean temperature recored from 1981 to 2010 AD.