蔵王の着氷に含まれる不溶性物質の化学組成

抄録

Rime as well as snow and ice monsters was sampled at Mt. Zaoh for three years from 1987to 1989, and insoluble metal concentrations were determined to get information on the transport of soil substances. As shown in Table 1, conspicuously high concentrations were found for the samples taken on March 5, 1987, and this observation was ascribed to the KOSA phenomenon (the wind-borne transport of loess particles), the occurrence of which was reported for March 5 and 6. There were high correlations between Al, which is an index element for the soil, and most of the other metal concentrations. Furthermore the data for the KOSA and the non-KOSA periods were correlated by the same regression lines, which are shown in Fig.1. This result suggests that, whenever the wintry winds predominate, the KOSA particles are transported to Japan irrespective of the apparent occurrence of the KOSA phenomenon.