Investigation of the temporal change of the sources of Aeolian dust delivered to east Asia using electron spin resonance signals in quartz

Abstract

The temporal change in the number of oxygen vacancies in quartz was investigated by ob-serving the E1' center in the atmospheric depositions collected at two cities in Japan in the recent past. The depositions collected at Fukuoka in March show the ESR intensities being correlated with the sum of the number of the days, in the month, on which Kosa was observed while no such correla-tion was found in the deposition those collected at Akita but a trend of decrease with time. The pre-sent results suggest that the number of oxygen vacancies in quartz might be useful to estimate quanti-tatively the contribution of the dust originated from China to the atmospheric deposition in Japan. © 2013 Silesian University of Technology, Gliwice, Poland. All rights reserved.