| Literature DB >> 17815626 |
D W Knutson, R W Buddemeier, S V Smith.
Abstract
Autoradiagraphs 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.Entities:
Year: 1972 PMID: 17815626 DOI: 10.1126/science.177.4045.270
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728