Ontake-san volcano, Honshu, Japón: news & activity updates
Actualizado: 15 ago. 2022 21:59 GMT - Refresh
mié, 29 jun 2022, 14:00
Inflation and increased seismicity were detected at Ontakesan in February, causing JMA to raise the Alert Level. Inflation ceased in late February and deformation rates had stabilized. Seismicity continued to fluctuate, but decreased in mid-March and volcanic tremor ceased on 19 March. Read alljue, 23 jun 2022, 14:35
Ontake-san volcano captured on 4 June (image: Kaidakogen webcam)
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jue, 23 jun 2022, 10:26
Inflation and increased seismicity were detected at Ontakesan in February, causing JMA to raise the Alert Level. Inflation ceased in late February and deformation rates had stabilized. Seismicity continued to fluctuate, but decreased in mid-March and volcanic tremor ceased on 19 March. Read alljue, 23 jun 2022, 10:00
Inflation and increased seismicity were detected at Ontakesan in February, causing JMA to raise the Alert Level. Inflation ceased in late February and deformation rates had stabilized. Seismicity continued to fluctuate, but decreased in mid-March and volcanic tremor ceased on 19 March. Read allmar, 22 mar 2022, 03:43
Ontake-san volcano today (image: Kaidakogen webcam)
jue, 3 mar 2022, 00:49
JMA reported that the number of volcanic earthquakes at Ontakesan began increasing at 1415 on 23 February. Four minutes later a volcanic tremor signal was detected along with uplift on the S flank. At 1635 JMA raised the Alert Level to 2 (on a scale of 1-5). Read allmié, 1 jul 2015, 06:00
JMA reported that activity at Ontakesan continued to decline during 26 June-3 July, although the volcano continued to be seismically active and emit white plumes to less than 1 km high. The Alert Level was lowered to 2 (on a scale of 1-5). Read allmié, 18 feb 2015, 06:00
JMA reported that cloud cover mostly prevented visual observations of Ontakesan during 13-20 February; white plumes rose 50-200 m above the crater rim. Seismicity remained low. The Alert Level remained at 3 (on a scale of 1-5). Read alljue, 18 dic 2014, 16:02
Penachos de vapor blanco fueron observados durante la semana pasada. JMA informes de actividad sísmica se mantuvo baja, pero mantiene el nivel de alerta 3, como explosiones freáticas repentinas podrían ocurrir otra vez.mié, 10 dic 2014, 06:00
JMA reported that cloud cover mostly prevented visual observations of Ontakesan during 10-16 December; white plumes rose 50 m above the crater rim and drifted SW on 10 December. Seismicity remained low. The Alert Level remained at 3 (on a scale of 1-5). Read allMostrar más
mié, 3 dic 2014, 06:00
JMA reported that cloud cover mostly prevented visual observations of Ontakesan during 3-9 December; white plumes rose 100 m above the crater rim on 7 December. The Alert Level remained at 3 (on a scale of 1-5). Read allvie, 14 nov 2014, 07:48
Read allmié, 12 nov 2014, 06:00
JMA reported that cloud cover often prevented visual observations of Ontakesan during 12-18 November; white plumes rose 200 m above the crater rim and drifted E during 16-17 November. The Alert Level remained at 3 (on a scale of 1-5). Read allvie, 7 nov 2014, 13:16
Penachos de Blanca Rosa 100-300 m por encima del borde del cráter y desvió NE y SE durante el 29 y 30 de octubre y 4 de noviembre. El nivel de alerta se mantuvo en 3 (en una escala de 1-5). Read allmié, 5 nov 2014, 06:00
JMA reported that cloud cover often prevented visual observations of Ontakesan during 5-11 November; white plumes rose 200-300 m above the crater rim and drifted NE, E, and SE. The Alert Level remained at 3 (on a scale of 1-5). Read allmié, 29 oct 2014, 06:00
JMA reported that cloud cover often prevented visual observations of Ontakesan during 29 October-4 November; white plumes rose 100-300 m above the crater rim and drifted NE and SE during 29-30 October and 4 November. The Alert Level remained at 3 (on a scale of 1-5). Read allvie, 24 oct 2014, 14:59
El volcán continúa produciendo penachos de vapor blanco subiendo unos 100 m por encima del cráter. Según los artículos de prensa 7 personas faltan todavía de la erupción Sep 27, pero las operaciones de búsqueda y rescate se suspenden hasta la primavera de las condiciones de winterly. El nivel de alerta se mantuvo en 3 (en una escala de 1-5).mié, 22 oct 2014, 06:00
JMA reported that cloud cover often prevented visual observations of Ontakesan during 22-28 October; white plumes were periodically observed rising 100-300 m above the crater rim and drifting E and SE. Seismicity remained low. The Alert Level remained at 3 (on a scale of 1-5). Read allmié, 15 oct 2014, 06:00
JMA reported that cloud cover often prevented visual observations of Ontakesan during 15-21 October; white plumes rose 100-200 m above the crater rim and drifted NE and SE during 16-18 October. White plumes rose 600 m on 19 October. A news article from 17 October noted that the search for the seven people still missing from the 27 September eruption was stopped due to wintery conditions; the search was expected to resume in the springtime. Read allmié, 8 oct 2014, 06:00
JMA reported that during 8-9 October ash emissions from Ontakesan continued. The plume turned white on 10 October, but during 10-14 October the emissions may have contained small amounts of ash. Tremor was below detection limits during 8-14 October. Read allMostrar más
sáb, 4 oct 2014, 21:52
El volcán continúa emiten penachos de vapor y posiblemente algunos informes Tokio VAAC ceniza. Read allmié, 1 oct 2014, 15:21
Las muertes desde el del sábado poderoso y mortal explosión del volcán ha subido ahora a 48, informes de prensa. La erupción fue una explosión freática repentina, inesperada (e impredecible), es decir, causada por la súbita evaporación de agua sobrecalentada en el sistema hidrotermal del volcán. Read allmié, 1 oct 2014, 06:00
JMA reported that ash emissions from Ontakesan likely continued during 1-7 October. The plume height could not be determined due to poor visibility although on 7 October observers noted that the plume rose 300 m above the crater rim and drifted E. Seismic levels fluctuated; tremor continued to be detected. Read alldom, 28 sep 2014, 06:52
In a screen grab from a YouTube video, hikers flee from Ontake on Saturday, Sept. 27, 2014, in Japan.
sáb, 27 sep 2014, 20:59
Pyroclastic flow during Ontake volcano's eruption today (Asahi.com)
mié, 24 sep 2014, 06:00
According to the Japan Meteorological Agency, an unexpected phreatic eruption at Ontakesan occurred at 1152 on 27 September after an 11-minute period of tremor and uplift detected just minutes beforehand. The eruption produced a pyroclastic flow that traveled more than 3 km down the S flank and an ash plume that rose 7-10 km and drifted E. Ashfall was extensive in the area and up to 50 cm thick near the craters. Read all
