Geomagnetic Secular Variation as Determined from Paleomagnetic Studies of Lake Sediments and its Relation to the Study of the Cosmic Ray Flux

摘要: Recent advances in paleomagnetism have made it possible to obtain reproducible, high-resolution records of geomagnetic secular variation from lacustrine sediments. The changes field directions recorded by these sediments provide new information about the orientation Earth’s magnetic field, relative importance dipole and non-dipole fields, rates at which can change. Although there are still some problems with methodology, lake also appear be able a detailed record intensity. This will very important separating effects those solar variability regard production cosmogenic radioisotopes atmosphere.