| Table 1. A list of Reported eruptions of Asama, including dismissed reports. | ||||||||||
| Date | Reference | M | Fatalities | Remarks | ||||||
| 1990.0720 | Kisyo Yoran | 0 | 0 | ashfall up to 8km from the summit | ||||||
| 1983.0408 | Hayakawa (1993) | 1 | 0 | ashfall in Maebashi, Utsunomiya, Onahama | ||||||
| 1982.0426 | Aramaki and Hayakawa (1982) | 1.0 | 0 | ashfall in Tokyo | ||||||
| 1973.0201 | Aramaki (1973) | 1 | 0 | small pyroclastic flows | ||||||
| 1961.0818 | newspaper and Kisyo Yoran | 1 | 1 | climber killed at 14:41, ashfall in Mishima and Ajiro | ||||||
| 1950.0923 | newspaper | 1 | 1 | climber killed at 04:37, ashfall in Maebashi (88g/m2), Mito, Tokyo (1.2g/m2) | ||||||
| 1947.0814 | newspaper and Kisyo Yoran | 1 | 11 | climbers killed at 12:17, ashfall in Maebashi and Yamada Onsen | ||||||
| 1941.0713 | Kisyo Yoran | 1 | 1 | climber killed at 13:05 | ||||||
| 1938.0716 | Kisyo Yoran | 1 | a few | climbers killed at 13:01, ashfall in Kofu, 400g/m2 at 20km S of the summit | ||||||
| 1936.1017 | newspaper | 1 | 1 | climber killed at 09:34 | ||||||
| 1936.0729 | Kisyo Yoran | 1 | 1 | climber killed 09:10, ashfall in Choshi (0.3g/m2) | ||||||
| 1931.0820 | newspaper | 3? | climbers killed at 03:21, ashfall in W part of Fukushima Prefecture | |||||||
| 1930.0820 | newspaper | 1 | 6 | climbers killed at 08:14, ashfall in Maebashi and Ashio | ||||||
| 1913.0529 | newspaper | 1 | 1 | climber killed at 10:44 | ||||||
| 1911.0815 | newspaper | 1 | >2 | climbers killed at 04:30 | ||||||
| 1911.0508 | newspaper | 1 | 1 | climber killed at 15:30 | ||||||
| 1900.0715 | Simkin and Siebert (1994) | 1 | Reported 25 fatalities is a misinterpretation of the tragedy at Adatara. | |||||||
| 1783.0508 | Tamura and Hayakawa (1995) | 5 | 1400 | Two killed by fallout on August 4, 1400 killed by a debris avalanche | ||||||
| and induced lahar on August 5. | ||||||||||
| 1721.0622 | Asamayama Oyake Muni | 1 | 15 | killed at the summit. | ||||||
| Monogatari | ||||||||||
| 1598.0513 | Todaiki | Description that 800 people were killed at the summit is unreasonable. | ||||||||
| 1596.0501 | Tenmei Shinjo Hen'iki | 3 | some | not a contemporary document. Pele's hair-fall was observed in Kyoto. | ||||||
| 1532.0104 | Tenmei Shinjo Hen'iki | 2 | not a contemporary document. Villages along the Jabori River were, | |||||||
| reportedly, swept away by hot lahars. | ||||||||||
| 1281.0700 | Koshiden | not a contemporary document. unreliable | ||||||||
| 1108.0829 | Chuyuki | 5 | the largest eruption of Asama through the Holocene | |||||||
| 887.0000 | Echigo Nendaiki | an eruption of Niigata Yakeyama | ||||||||
| 685.0000 | Nihon Shoki | probably an eruption from another volcano | ||||||||
| JMA: Japan Meteorological Agency | ||||||||||
| Kisyo Yorai is an monthly publication of JMA. | ||||||||||
| M is eruption magnitude defined by M = log m -7, where m is mass of magma erupted in kg. | ||||||||||