from arid parts of China were transported. In the postglacial
period (MIS 1), the total amount of particles decreased in
every region, and wind dust particles that were blown from
dry areas of China made up the main proportion. This is
attributed to the East Asian monsoon wind system moving
between the glacial period and the postglacial period, and the
Fig. 2.9 Vertical distribution of
snow line, periglacial
environment, timber line at last
glacial (MIS4-2) and present
(MIS1) (upper figure: modified
from Iwata and Koaze (2001)
which partially revised Kaizuka
and Chinzei (1995), lower figure:
modified from National
Astronomical Observatory of
Japan (2018))
20
K. Tamura et al.