Latest Pleistocene and Holocene Geomagnetic Paleointensity on Hawaii
Latest Pleistocene and Holocene Geomagnetic Paleointensity on Hawaii
复制标题
夏威夷最新更新世和全新世地磁古强度
DOI：
10.1126/science.262.5132.412
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发表时间：
1993
期刊：
影响因子：
56.9
通讯作者：
D. Champion
中科院分区：
文献类型：
--
作者：
E. A. Mankinen;D. Champion
夏威夷岛上放射性碳测年熔岩流的地磁古强度测定提供了全新世时期古强度的大致趋势估计，并提供了最后一次冰期结束时强度变化的一瞥。当夏威夷的数据与世界各地的其他数据进行比较时，地磁场的强度似乎比4.5万年前到1万年前的全新世平均水平降低了约35%。这一幅度的长期减少与报告的同一时间段宇宙源核素产生率的增加相一致。
Geomagnetic paleointensity determinations from radiocarbon-dated lava flows on the island of Hawaii provide an estimate of broad trends in paleointensity for Holocene time and offer a glimpse of intensity variations near the end of the last glacial period. When the data from Hawaii are compared with others worldwide, the intensity of the geomagnetic field seems to have been reduced from the Holocene average by about 35 percent between 45,000 and 10,000 years ago. A long-term reduction of this magnitude is compatible with reported increases in the production rate of cosmogenic nuclides during the same interval.