Short Wavelength Magnetic Variations within the Central Anomaly on the Southern EPR

这是一项东太平洋隆起南部的近底磁调查和采样计划，主要目的是评估布鲁内斯磁异常（特别是中央磁高异常）内线状海岸波长变化反映地磁强度波动的可能性。将在南纬17.5度的走廊内收集两条长深拖线，并在南纬19.5度收集另外四条长深拖线。如果地球磁场强度的波动确实是在海洋磁剖面中通常观察到的微小摆动的主要原因，那么这些短波长的异常可能会提供关于过去地磁强度变化的新信息，也可能为评估脊峰过程提供比单独的极性反转更精细的时间标记。

This is a near-bottom magnetic survey and sampling program on the southern East Pacific Rise designed primarily to evaluate the possibility that lineated shore wavelength variations within the Bruhnes magnetic anomaly, and the central anomaly magnetic high in particular, reflect geomagnetic intensity fluctuations. Two long Deep Tow profiles will be obtained in a corridor at 17.5 degrees south, and an additional four long Deep Tow lines will collected at 19.5 degrees south. If fluctuations in the earth's field intensity do account for much of the tiny wiggles commonly observed in oceanic magnetic profiles, these short wavelength anomalies May provide new information on past geomagnetic intensity variations as well as finer- scale temporal markers for evaluating ridge crest processes than are available with polarity revesals alone.