A rapid cosmic-ray increase in BC 3372–3371 from ancient buried tree rings in China
oleh: F. Y. Wang, H. Yu, Y. C. Zou, Z. G. Dai, K. S. Cheng
| Format: | Article |
|---|---|
| Diterbitkan: | Nature Portfolio 2017-11-01 |
Deskripsi
14C can be absorbed by trees as a result of the interaction of cosmic rays produced by high-energy phenomena with the Earth’s atmosphere. Here, the authors observe a rapid increase of 14C in an ancient buried tree from BC 3372 to BC 3371, and suggest that it could originate from a large solar proton event.