Magnetic Field Excursions and Related Secular Variation During the Brunhes Epoch (0-780,000 YBP)

从ODP Leg 72得到的新的初始古地质学结果估计了整个布伦内斯时代的长期变化模式，并确定了13次布伦内斯时代的磁场偏移。这是第一个数据集，允许在这样一个准时间隔和一个时间间隔内定向观察长期变化。低考虑范围内的短途旅行和古强度~。对个人偏移记录的详细分析表明，有两种基本不同类型的偏移，一种是与正常的长期变化密切相关的t\ t~c，另一种可能被认为是一个失败的反转。该项目将分析和合成PIVVIOLIS的palcornmagnetic结果，并对cleven - ex和fh（,iii）连续长期变化进行选择性的新离散样本测量。

New initial paleornagrictic results froni ODP Leg 72 estimate the pattern of secular variation for the entire Brunhes Epoch and identi I'v 13 Brunhes-aged magnetic field excursions. This is the first data set that allows ~i directional look at secular variations over such a ]on - time interval and a! lows consideration within the framework of excursions and paleointenslt~. Detailed anilysis ol'thc individtitif excursion records suggests that there are two basically different types ol, cxcursions, one t\ t~c that is closely related to normal secular variation and another type that nilght he considei Cd an aborted reversal. The project will analyze and s\ nthesize PIVVIOLIS palcornagnetic rcults and make selective new discretesample ineastirements on cleven exci-ii-sions and fh(,iii, contiguous secular variation.