富士砂防って何なに)してるの?

What kinds of works does Fuji Sabo Office do?

History of Disaster

History of eruptions

Year Type of activity Items described in old records (excerpt)
781 eruption Ash falls at mountain foot; leaves died (Shoku Nihongi)
800-802 Enryaku eruption Crushes stones blocked Ashigara route, so Hakone route was opened (Nihongi)
864-866 Jogan eruption Lava flows went into Lake Motosu and Lake Senoumi (Nihon Sandai Jitsuroku)
937 eruption Lava flows filled an unknown lake (Nihongi)
999 eruption Eruption (Honcho Seiki)
1020 Fumes and volcanic red glow Smoke rose from the summit, and flames were visible at night (Sarashina Nikki)
1033 eruption Lava flows reached the foot of the mountain (Nihongi)
1083 eruption Explosive eruption (Fuso Ryakuki)
1435 eruption Flames observable on Mt. Fuji (Odaiki)
1511 eruption Strange rumbles was heard near Lake Kawaguchi, and the Rock Kamaiwa was burned (Myohojiki)
1704 Rumbling 35 days after the Genroku Kanto Earthquake, Mt. Fuji rumbled for 4 days. (Daisenji document)
1707 Hoei eruption 49 days after the Hoei Tokai Earthquake, an explosive eruption occurred for 2 consecutive weeks (Multiple historical documents)



【Old map depicting Hoei eruption】
Gotenba City, Shizuoka Prefecture: Collection of Mr. Fumio Takiguchi
Provided by:Shizuoka Prefectural Central Library, History and Culture Information Center