The GR curves fluctuation on millennial or centennial scale is also significant.It is the timescale that occupies an important position in the Quaternary paleoclimatic researches.

• 时间标尺的确定是第四纪古气候研究的基础，由于近年来古地磁界限年代经过多次调整，有必要建立新的轨道调谐时间标尺，以便更好地进行全球对比。