CORAL CHRONOMETERS - SEASONAL GROWTH BANDS IN REEF CORALS
CORAL CHRONOMETERS - SEASONAL GROWTH BANDS IN REEF CORALS
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DOI：
10.1126/science.177.4045.270
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发表时间：
1972-01-01
期刊：
影响因子：
56.9
通讯作者：
BUDDEMEIER, RW
中科院分区：
文献类型：
--
作者：
KNUTSON, DW;SMITH, SV;BUDDEMEIER, RW
放射自显影和X射线照片是通过埃尼威托克珊瑚礁中心的垂直切片制成的。珊瑚结构中的放射性带是由锶-90引起的，与特定的一系列核试验有关，因此可以计算长期生长率。这些数据表明，X射线照相揭示的径向密度的周期变化是每年。
Autoradiographs and x-radiographs have been made of vertical sections through the centers of reef corals from Eniwetok. Radioactivity bands in the coral structure are caused by strontium-90 and are related to specific series of nuclear tests, thus making possible calculation of long-term growth rates. These data indicate that the cyclic variations in radial density revealed by x-radiography are annual.