[O-02] Poster presentations by senior high school students

[O02-P24] Little ice age during the Edo era in the WAKASA area
~Climate reconstruction using Modern analogues technique~

*Chiharu Kuroda¹, *Wakana Shimazu¹, *Yuko Shimizu¹, *Sakura Hattori¹, *Yuka Ymada¹, *Ami Yamamoto¹, *Hirono Yoshioka¹ (1.Fukui prefectural Wakasa Senior High School)

Keywords:pollen analysis , three major cold famine periods, climate reconstruction, modern analogues technique

It is known that past climates can be reconstructed quantitatively through pollen analysis of sediments. In Wakasa, Fukui, it is recorded that there were three major cold famine periods during the Edo era, but it's not known what the temperatures were like at that time. We tried pollen analysis in order to verify the past climates quantitatively. Based on the results of Carbon-14 dating, we collected 16 sample sediment layers from the first years of the major famines during the Edo era. After pollen extraction, we counted the pollen of the trees, 200 in total per 1 sample and calculated the rate of genus and species included in each sample. Based on the pollen data, we reconstructed the climate of 300 years ago by using the reconstruction software, Polygon. As a result, we could find two low temperature periods.