Analysis by ESR of quartz in tephric sedimentary sequence at Kamiyoshida, Rokunohe, Aomori, Japan, indicating temporal variation during 20-100 ka of eolian dust from China

Purpose The number of oxygen vacancies in quartz measured by electron spin resonance (ESR) as the intensity of the E1' center has been used to investigate the provenance of the sediments and has been found to be a good proxy in discussing the direction and intensity of the wind system in the past. While its temporal variations have been examined using marine sediments. The present study aimed to show that terrestrial sediments are also useful for such studies on climate change when it is continuous.