Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Asosan
The 24-km-wide Aso caldera was formed during four major explosive eruptions during the Pleistocene. These produced voluminous pyroclastic flows that swept over much of Kyushu. A group of 17 central cones, seen here from the ENE caldera rim, was constructed in the central part of the caldera. One of these, Naka-dake, is one of Japan's most active volcanoes, with historical eruptions dating back to 553 CE. The summit crater of Naka-dake is accessible by toll road and cable car, and is one of Kyushu's most popular tourist destinations. Photo by Norm Banks, 1981 (U.S. Geological Survey).
Volcano Number:282110
Volcano Name:Asosan
Country:Japan
Volcano Type:Caldera
Last Eruption:2019
Elevation:1592m
Tectonic Setting:Subduction zone / Continental crust (> 25 km)
Pop. within 5km:75559
Pop. within 10km:75559
Pop. within 30km:234591
Pop. within 100km:6507519
Latitude:32.884
Longitude:131.104



Eruption Data from the Global Volcanism Program of the Smithsonian Institution
Volcano Number Volcano Name Eruption Number Activity Type Explosivity Index Max Explosivity Index Modifier Activity Area Activity Unit Start Evidence Method Start Date End Date
282110 Asosan 13833 Confirmed Eruption 2 Naka-dake Historical Observations 1916/4/19
282110 Asosan 13834 Confirmed Eruption 2 Naka-dake Historical Observations 1918/1/16
282110 Asosan 13839 Confirmed Eruption 2 Naka-dake Historical Observations 1956/8/16
282110 Asosan 13840 Confirmed Eruption 1 Naka-dake Historical Observations 1956/12/21 1956/12/21
282110 Asosan 13841 Confirmed Eruption 1 Naka-dake Historical Observations 1957/4/12 1957/4/12
282110 Asosan 13842 Confirmed Eruption 2 Naka-dake Historical Observations 1957/10/16 1958/12/16
282110 Asosan 13843 Confirmed Eruption 1 Naka-dake Historical Observations 1959/7/16 1959/10/2
282110 Asosan 13844 Confirmed Eruption 2 Naka-dake Historical Observations 1960/1/16 1960/4/9
282110 Asosan 13845 Confirmed Eruption 1 Naka-dake Historical Observations 1960/9/16 1962/11/16
282110 Asosan 17097 Confirmed Eruption 2 Naka-dake Historical Observations 1584
282110 Asosan 17179 Confirmed Eruption 2 Naka-dake Historical Observations 1919 1919
282110 Asosan 17180 Confirmed Eruption 2 Naka-dake Historical Observations 1920
282110 Asosan 17183 Confirmed Eruption 1 Jigoku explosion crater Ikph2 tephra Ar/Ar -8050
282110 Asosan 17184 Confirmed Eruption Radiocarbon (uncorrected) -3610
282110 Asosan 17185 Confirmed Eruption 0 Naka-dake Tephrochronology -2850
282110 Asosan 17186 Confirmed Eruption 1 Jigoku explosion crater Ikph1 tephra Tephrochronology -2550
282110 Asosan 17187 Confirmed Eruption Radiocarbon (uncorrected) -2350
282110 Asosan 17188 Confirmed Eruption ACP-1 tephra Radiocarbon (corrected) -2150
282110 Asosan 17189 Confirmed Eruption 3 Kishima-dake KsS tephra Radiocarbon (corrected) -2050
282110 Asosan 17190 Confirmed Eruption Radiocarbon (uncorrected) -1830
282110 Asosan 17191 Confirmed Eruption 3 Ojo-dake OjS tephra Radiocarbon (corrected) -1650
282110 Asosan 17192 Confirmed Eruption 3 Komezuka Radiocarbon (corrected) -1350
282110 Asosan 17193 Confirmed Eruption Radiocarbon (uncorrected) -1270
282110 Asosan 17194 Confirmed Eruption Radiocarbon (uncorrected) -630
282110 Asosan 17195 Confirmed Eruption 3 Naka-dake N2S tephra Radiocarbon (corrected) 440
282110 Asosan 17196 Uncertain Eruption 3 ^ Naka-dake 553
282110 Asosan 17197 Uncertain Eruption 0 ? Naka-dake 796
282110 Asosan 17198 Confirmed Eruption 3 ? Naka-dake Historical Observations 864/11/9
282110 Asosan 17199 Confirmed Eruption 2 Naka-dake Historical Observations 867/6/20
282110 Asosan 17200 Uncertain Eruption 2 ? Naka-dake 986/9/2
282110 Asosan 17201 Uncertain Eruption 2 ? Naka-dake 1229/12/31
282110 Asosan 17202 Confirmed Eruption 2 Naka-dake Historical Observations 1239/2/8
282110 Asosan 17203 Confirmed Eruption 2 Naka-dake Historical Observations 1240
282110 Asosan 17204 Confirmed Eruption 2 Naka-dake Historical Observations 1265/12/1
282110 Asosan 17205 Confirmed Eruption 2 Naka-dake Historical Observations 1269
282110 Asosan 17206 Confirmed Eruption 2 Naka-dake Historical Observations 1271/1/5
282110 Asosan 17207 Confirmed Eruption 2 Naka-dake Historical Observations 1272/4/16
282110 Asosan 17208 Confirmed Eruption 2 Naka-dake Historical Observations 1272/11/29
282110 Asosan 17209 Confirmed Eruption 2 Naka-dake Historical Observations 1273
282110 Asosan 17210 Confirmed Eruption 2 Naka-dake Historical Observations 1274
282110 Asosan 17211 Confirmed Eruption 2 Naka-dake Historical Observations 1281 1281
282110 Asosan 17212 Confirmed Eruption 2 Naka-dake Historical Observations 1286/8/30
282110 Asosan 17213 Confirmed Eruption 2 Naka-dake Historical Observations 1305/5/2
282110 Asosan 17214 Confirmed Eruption 2 Naka-dake Historical Observations 1324/9/7
282110 Asosan 17215 Confirmed Eruption 2 Naka-dake Historical Observations 1331 1331
282110 Asosan 17216 Confirmed Eruption 2 Naka-dake Historical Observations 1331 1333
282110 Asosan 17217 Confirmed Eruption 2 Naka-dake Historical Observations 1335/2/7 1335/3/26
282110 Asosan 17218 Confirmed Eruption 2 Naka-dake Historical Observations 1340/2/3 1340/2/25
282110 Asosan 17219 Confirmed Eruption 2 Naka-dake Historical Observations 1343
282110 Asosan 17220 Uncertain Eruption 2 Naka-dake 1346
282110 Asosan 17221 Uncertain Eruption 2 Naka-dake 1369
282110 Asosan 17222 Confirmed Eruption 2 Naka-dake Historical Observations 1375/12/20 1376/1/31
282110 Asosan 17223 Confirmed Eruption 2 Naka-dake Historical Observations 1376/6/20
282110 Asosan 17224 Confirmed Eruption 2 Naka-dake Historical Observations 1377/5/6
282110 Asosan 17225 Confirmed Eruption 2 Naka-dake Historical Observations 1387/6/19
282110 Asosan 17226 Uncertain Eruption 2 Naka-dake 1388/10/16
282110 Asosan 17227 Uncertain Eruption 2 ? Naka-dake 1390
282110 Asosan 17228 Confirmed Eruption 2 Naka-dake Historical Observations 1434/5/10 1434/5/18
282110 Asosan 17229 Confirmed Eruption 2 Naka-dake Historical Observations 1438/1/9 1438/2/18
282110 Asosan 17230 Confirmed Eruption 2 Naka-dake Historical Observations 1473/5/16 1474/4/15
282110 Asosan 17231 Confirmed Eruption 2 Naka-dake Historical Observations 1485/1/5
282110 Asosan 17232 Confirmed Eruption 2 Naka-dake Historical Observations 1505
282110 Asosan 17233 Confirmed Eruption 2 Naka-dake Historical Observations 1506/4/6
282110 Asosan 17234 Confirmed Eruption 2 Naka-dake Historical Observations 1522/2/15
282110 Asosan 17235 Confirmed Eruption 2 Naka-dake Historical Observations 1533/7/17
282110 Asosan 17236 Confirmed Eruption 2 Naka-dake Historical Observations 1542/4/29
282110 Asosan 17237 Confirmed Eruption 2 Naka-dake Historical Observations 1558 1559
282110 Asosan 17238 Confirmed Eruption 2 Naka-dake Historical Observations 1562
282110 Asosan 17239 Uncertain Eruption 2 ? Naka-dake 1563/5/3
282110 Asosan 17240 Confirmed Eruption 2 Naka-dake Historical Observations 1564
282110 Asosan 17241 Confirmed Eruption 2 Naka-dake Historical Observations 1573
282110 Asosan 17242 Confirmed Eruption 2 Naka-dake Historical Observations 1574
282110 Asosan 17243 Confirmed Eruption 2 Naka-dake Historical Observations 1576/11/15
282110 Asosan 17244 Confirmed Eruption 2 Naka-dake Historical Observations 1582/2/17
282110 Asosan 17245 Confirmed Eruption 2 Naka-dake Historical Observations 1583/12/14
282110 Asosan 17246 Confirmed Eruption 2 Naka-dake Historical Observations 1587
282110 Asosan 17247 Confirmed Eruption 2 Naka-dake Historical Observations 1592
282110 Asosan 17248 Confirmed Eruption 2 Naka-dake Historical Observations 1598 1599
282110 Asosan 17249 Confirmed Eruption 2 Naka-dake Historical Observations 1611
282110 Asosan 17250 Confirmed Eruption 2 Naka-dake Historical Observations 1612/8/12
282110 Asosan 17251 Confirmed Eruption 2 Naka-dake Historical Observations 1613/8/8
282110 Asosan 17252 Confirmed Eruption 2 Naka-dake Historical Observations 1620/6/3
282110 Asosan 17253 Confirmed Eruption 2 Naka-dake Historical Observations 1631
282110 Asosan 17254 Confirmed Eruption 2 Naka-dake Historical Observations 1637/9/29 1637/10/5
282110 Asosan 17255 Confirmed Eruption 2 Naka-dake Historical Observations 1649 1649
282110 Asosan 17256 Confirmed Eruption 2 Naka-dake Historical Observations 1668
282110 Asosan 17257 Confirmed Eruption 2 Naka-dake Historical Observations 1668 1669
282110 Asosan 17258 Uncertain Eruption 2 Naka-dake 1671
282110 Asosan 17259 Confirmed Eruption 2 Naka-dake Historical Observations 1675/2/16
282110 Asosan 17260 Confirmed Eruption 2 Naka-dake Historical Observations 1683
282110 Asosan 17261 Confirmed Eruption 2 Naka-dake Historical Observations 1691 1691
282110 Asosan 17262 Uncertain Eruption 2 Naka-dake 1708/9/17
282110 Asosan 17263 Confirmed Eruption 2 Naka-dake Historical Observations 1709/2/13
282110 Asosan 17264 Uncertain Eruption 2 ? Naka-dake 1753 1754
282110 Asosan 17265 Confirmed Eruption 3 ? Naka-dake Historical Observations 1765 1765
282110 Asosan 17266 Confirmed Eruption 2 Naka-dake Historical Observations 1772 1780
282110 Asosan 17267 Confirmed Eruption 1 Naka-dake Historical Observations 1781 1788
282110 Asosan 17268 Confirmed Eruption 2 Naka-dake Historical Observations 1804/9/5
282110 Asosan 17269 Confirmed Eruption 2 Naka-dake Historical Observations 1806 1806
282110 Asosan 17270 Confirmed Eruption 2 Naka-dake Historical Observations 1814
282110 Asosan 17271 Confirmed Eruption 2 Naka-dake Historical Observations 1815/2/10 1815
282110 Asosan 17272 Confirmed Eruption 2 Naka-dake and west flank (Yunotani) Historical Observations 1816/6/9 1816/7/6
282110 Asosan 17273 Confirmed Eruption 2 Naka-dake Historical Observations 1826/10/3 1826/11/22
282110 Asosan 17274 Confirmed Eruption 2 Naka-dake Historical Observations 1827
282110 Asosan 17275 Confirmed Eruption 2 Naka-dake Historical Observations 1827/11/12 1828
282110 Asosan 17276 Confirmed Eruption 2 Naka-dake Historical Observations 1828
282110 Asosan 17277 Confirmed Eruption 2 Naka-dake Historical Observations 1829
282110 Asosan 17278 Confirmed Eruption 2 Naka-dake Historical Observations 1830/2/16 1830
282110 Asosan 17279 Confirmed Eruption 2 Naka-dake Historical Observations 1914/1/13
282110 Asosan 17280 Confirmed Eruption 2 Naka-dake Historical Observations 1830/8/11 1832
282110 Asosan 17281 Confirmed Eruption 2 Naka-dake Historical Observations 1835/5/1
282110 Asosan 17282 Confirmed Eruption 2 Naka-dake Historical Observations 1837/10/8
282110 Asosan 17283 Confirmed Eruption 2 Naka-dake Historical Observations 1838/3/4
282110 Asosan 17284 Confirmed Eruption 2 Naka-dake Historical Observations 1854/2/26
282110 Asosan 17285 Confirmed Eruption 2 Naka-dake Historical Observations 1856/3/18 1856/6/13
282110 Asosan 17286 Confirmed Eruption 3 Naka-dake Historical Observations 1872/12/1 1873/6/8
282110 Asosan 17287 Confirmed Eruption 2 Naka-dake Historical Observations 1874/2/7
282110 Asosan 17288 Confirmed Eruption 2 Naka-dake Historical Observations 1884/3/21 1884
282110 Asosan 17289 Confirmed Eruption 2 Naka-dake Historical Observations 1894/3/6 1894/8/30
282110 Asosan 17290 Confirmed Eruption 2 Naka-dake Historical Observations 1897/2/24
282110 Asosan 17291 Confirmed Eruption 2 Naka-dake Historical Observations 1898 1899
282110 Asosan 17292 Confirmed Eruption 3 Naka-dake Historical Observations 1906/6/7
282110 Asosan 17293 Confirmed Eruption 2 Naka-dake Historical Observations 1907/12/12
282110 Asosan 17294 Confirmed Eruption 2 Naka-dake Historical Observations 1908/1/17 1908/1/29
282110 Asosan 17295 Confirmed Eruption 2 Naka-dake Historical Observations 1909
282110 Asosan 17296 Confirmed Eruption 2 Naka-dake Historical Observations 1910/4/3
282110 Asosan 17297 Confirmed Eruption 2 Naka-dake Historical Observations 1911 1912
282110 Asosan 17298 Confirmed Eruption 2 Naka-dake Historical Observations 1923 1923/9/17
282110 Asosan 17299 Confirmed Eruption 2 Naka-dake Historical Observations 1925/1/6
282110 Asosan 17300 Confirmed Eruption 2 Naka-dake Historical Observations 1926/9/21 1928/1/13
282110 Asosan 17301 Confirmed Eruption 2 Naka-dake Historical Observations 1928/9/6 1929/10/23
282110 Asosan 17302 Confirmed Eruption 2 Naka-dake Historical Observations 1930/9/3 1930/9/6
282110 Asosan 17303 Uncertain Eruption 1 ? Naka-dake 1931/10/18
282110 Asosan 17304 Confirmed Eruption 2 Naka-dake Historical Observations 1932 1933/9/28
282110 Asosan 17305 Confirmed Eruption 2 Naka-dake Historical Observations 1934/7/16
282110 Asosan 17306 Confirmed Eruption 2 Naka-dake Historical Observations 1935/1/7 1935/10/8
282110 Asosan 17307 Confirmed Eruption 2 Naka-dake Historical Observations 1936/2/5 1936/2/5
282110 Asosan 17308 Confirmed Eruption 2 Naka-dake Historical Observations 1936/8/8 1936/8/14
282110 Asosan 17309 Confirmed Eruption 2 Naka-dake Historical Observations 1937/1/13 1937/1/13
282110 Asosan 17310 Confirmed Eruption 2 Naka-dake Historical Observations 1937/5/7 1937/5/13
282110 Asosan 17311 Confirmed Eruption 2 Naka-dake Historical Observations 1938 1939/8/11
282110 Asosan 17312 Confirmed Eruption 2 Naka-dake Historical Observations 1940/4/20 1941/8/8
282110 Asosan 17313 Uncertain Eruption 1 ? Naka-dake 1942/6/8 1942/6/22
282110 Asosan 17314 Confirmed Eruption 2 Naka-dake Historical Observations 1943/6/21 1943/6/24
282110 Asosan 17315 Confirmed Eruption 2 Naka-dake Historical Observations 1943/12/9 1944
282110 Asosan 17316 Confirmed Eruption 2 Naka-dake Historical Observations 1945/9/16 1945/9/19
282110 Asosan 17317 Confirmed Eruption 2 Naka-dake Historical Observations 1946/4/29 1946/6/24
282110 Asosan 17318 Confirmed Eruption 2 Naka-dake Historical Observations 1946/12/30 1946/12/30
282110 Asosan 17319 Confirmed Eruption 2 Naka-dake Historical Observations 1947/5/26 1947
282110 Asosan 17320 Confirmed Eruption 1 Naka-dake Historical Observations 1948/4/9 1948
282110 Asosan 17321 Confirmed Eruption 2 Naka-dake Historical Observations 1949/12/26 1950/4/15
282110 Asosan 17322 Confirmed Eruption 2 Naka-dake Historical Observations 1950/11/16 1951/1/16
282110 Asosan 17323 Confirmed Eruption 2 Naka-dake Historical Observations 1951/5/4 1951/8/16
282110 Asosan 17324 Uncertain Eruption Naka-dake 1952/7/2
282110 Asosan 17325 Confirmed Eruption 2 Naka-dake Historical Observations 1953/4/27 1953/7/30
282110 Asosan 17326 Confirmed Eruption 1 Naka-dake Historical Observations 1953/12/16 1953/12/16
282110 Asosan 17327 Confirmed Eruption 1 Naka-dake Historical Observations 1954/5/26 1954/5/26
282110 Asosan 17328 Confirmed Eruption 1 Naka-dake Historical Observations 1955/7/25 1955/7/28
282110 Asosan 17329 Confirmed Eruption 2 Naka-dake Historical Observations 1956/1/3 1956/1/13
282110 Asosan 17330 Confirmed Eruption 1 Naka-dake Historical Observations 1963/4/21 1963/7/16
282110 Asosan 17331 Confirmed Eruption 2 Naka-dake Historical Observations 1963/11/10 1964/1/16
282110 Asosan 17332 Confirmed Eruption 1 Naka-dake Historical Observations 1964/5/14 1964/5/14
282110 Asosan 17333 Confirmed Eruption 2 Naka-dake Historical Observations 1964/10/16 1966/12/16
282110 Asosan 17334 Confirmed Eruption 1 Naka-dake Historical Observations 1967/5/16 1969/12/16
282110 Asosan 17335 Confirmed Eruption 2 Naka-dake Historical Observations 1970/4/21 1972/9/16
282110 Asosan 17336 Confirmed Eruption 2 Naka-dake Historical Observations 1973/1/16 1975/6/16
282110 Asosan 17337 Confirmed Eruption 1 Naka-dake Historical Observations 1975/10/16 1976/1/13
282110 Asosan 17338 Confirmed Eruption 2 Naka-dake Historical Observations 1977/4/11 1978/8/16
282110 Asosan 17339 Confirmed Eruption 2 Naka-dake Historical Observations 1979/6/5 1980/3/8
282110 Asosan 17340 Confirmed Eruption 1 Naka-dake Historical Observations 1980/9/24 1980/9/24
282110 Asosan 17341 Confirmed Eruption 1 Naka-dake Historical Observations 1981/6/15 1981/6/15
282110 Asosan 17342 Confirmed Eruption 1 Naka-dake Historical Observations 1983/7/16 1983/10/16
282110 Asosan 17343 Confirmed Eruption 1 Naka-dake Historical Observations 1984/4/13 1985/6/24
282110 Asosan 17344 Confirmed Eruption 1 Naka-dake Historical Observations 1988/5/26 1989/1/16
282110 Asosan 17345 Confirmed Eruption 2 Naka-dake Historical Observations 1989/4/5 1991/2/9
282110 Asosan 17346 Confirmed Eruption 2 Naka-dake Historical Observations 1992/4/23 1993/6/10
282110 Asosan 17347 Confirmed Eruption 2 Naka-dake Historical Observations 1994/5/2 1995/11/16
282110 Asosan 17348 Confirmed Eruption 1 Naka-dake Historical Observations 2003/7/10 2003/7/14
282110 Asosan 17349 Confirmed Eruption 1 Naka-dake Historical Observations 2004/1/14 2004/1/14
282110 Asosan 17350 Confirmed Eruption 1 Naka-dake Historical Observations 2005/4/14 2005/8/16
282110 Asosan 17351 Confirmed Eruption 1 Naka-dake Historical Observations 2008/2/17 2008/2/17
282110 Asosan 20753 Confirmed Eruption 1 Naka-dake Historical Observations 2011/5/15 2011/6/9
282110 Asosan 20935 Confirmed Eruption 1 Naka-dake Historical Observations 2014/1/13 2014/2/19
282110 Asosan 20960 Confirmed Eruption 2 Naka-dake Historical Observations 2014/8/30 2016/5/1
282110 Asosan 22174 Confirmed Eruption 3 Historical Observations 2016/10/7 2016/11/12
282110 Asosan 22317 Confirmed Eruption Historical Observations 2019/4/16 2019/5/12
Emissions Data from the Global Volcanism Program of the Smithsonian Institution No emissions data found for this volcano.


Data from the Earthchem Portal


Data from the SESAR Database


Data from the MaGa Database
Location: Aso (View Details at MaGa DB)
Description: Mount Aso is the largest active volcano in Japan. In recent years, it has been the site of frequent ash eruptions.Aso is no single edifice, but a complex of active vents in the center of a large 24 km wide caldera.
Hazard Description: not reported
Type: soil_diffuse_emission
Region: Kumamoto Prefecture, Japan
Country: Japan
Volcanic Complex: Aso
Gas Flux Data:
Measurement Name Detail Specie Flux Std. Dev. Unit of Measure
Aso_01012007 Detail CO2 0.12 0 Mg/d