Change of sediment provenance around Lake Biwa, Western Japan : Did it occur along with Quaternary climate change?

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ESR signal intensity from quartz included in the Lake Biwa 1400 meter sediment core seems to fluctuate periodically together with cyclic environmentchange. Characteristics of ESR and TL signal intensities suggest that the core sedimentsof ca. 900ka age seem to be supplied mainly from the bedrocks to the north, the east and the south of the core location and the Yasu River. Content of ^<10>Be in the sediments also suggests that environment of sediment provenance for the Lake Biwa 1400 meter sediment core had changed along with the geological sequence.