Satellite data showed distinct yellow-green discolored water in the vicinity of the submarine Kavachi volcano on 14 and 19 February. The discolored water extended 15-20 km SE and E.
Satellite data showed distinct yellow-green discolored water in the vicinity of the submarine Kavachi volcano on 2, 7, 12, and 22 September, 2, 7, 12, 17, and 27 October, and 1, 6, and 11 November.
Satellite data showed discolored water around Kavachi on 10, 20, 25, and 30 April as well as on 5 May.
Satellite data showed discolored water around Kavachi on 31 March. The discolored water fanned out to the S over a short distance, though it was not clearly observed due to cloudy weather.
Satellite data showed discolored water around Kavachi in the month of February, on three of four image acquisition dates. Discolored water fanned out short distances (around 3 km) mainly to the E on 4 February and to the WSW on 14 February. Cloudy weather prevented views of the vent area on 9 February.
Satellite data showed discolored water around and to the SW of Kavachi on 12 October. Discolored water was not obviously visible in images from 2, 7, and 17 October.
Satellite data showed discolored water around and to the SW of Kavachi on 25 January. Discolored water was not obviously visible in 20 January images; weather clouds prevented views of the area in images through 14 February.
Satellite data showed discolored water around Kavachi possibly beginning in early September; by 7 September discolored plumes in the water were visible E of the submarine cone.
Thu, 7 May 2020, 07:52
Discolored water around the Kavachi volcano (image: @CultureVolcan/twitter)
Satellite data showed discolored water around the volcano beginning in January 2020. The discolored plumes became more frequent, dense, and stretched for longer distances.
Read allWed, 29 Apr 2020, 06:00
Satellite data showed discolored water around Kavachi beginning on 16 March 2020 extending SE of Kavachi; distinct discolored plumes were also observed on 25 and 30 April 2020. On 25 April a satellite image showed a plume in the water that spread over an approximate area of 30 square kilometers. The image acquired on 30 April showed a thin ribbon of discolored water extending W of Kavachi.
Read allMon, 16 Jun 2014, 10:20
Some intermittent eruptive activity seems to be occurring at the volcano. On 10 June, another spot of discolored water had been visible above the shallow submarine volcano.
Sat, 24 May 2014, 11:05
Satellite images showing a discolored water plume from Kavachi (NASA, compiled and annotated by Culture Volcan)
It is likely that some volcanic activity has continued intermittently at the undersea volcano after a discolored water plume was first spotted on 29 January this year.
Read allSun, 2 Feb 2014, 09:51
MODIS / Terra satellite image last night showing the eruption site with the discolored water and perhaps a small steam plume
What could be a small steam plume above the submarine volcano is visible on the latest reasonably clear satellite image from 12 hours ago. It does not look as if the volcano has breached the surface (yet).
Sat, 1 Feb 2014, 09:02
The discolored water plume from Kavachi volcano (NASA Earth Observatory image by Jesse Allen and Robert Simmon, using EO-1 ALI data from the NASA EO-1 team. Caption by Robert Simmon)
A submarine eruption is likely occurring at the submerged volcano. A NASA satellite image from 29 Jan shows a plume of discolored sea water swirling and drifting from the location of the volcano. The discoloration is likely from suspended volcanic sediments (the fragmented lava) and gasses.
Read allWed, 29 Jan 2014, 06:00
According to NASA's Earth Observatory, a satellite image acquired on 29 January showed a plume of discolored water E of Kavachi, likely from lava fragments and dissolved gases. A bright area above the submerged peak suggested churning water. There was no sign that the volcano had breached the sea surface.
Read allSun, 10 Jan 2010, 11:20
2 large earthquakes magnitude 7.2 and 6.5 occurred 88 km NW of Kavachi volcano at 9:36 and 9:48 am local time on 4 January 2010.
Read allWed, 24 Mar 2004, 06:00
Based on a report by an observer from The Wilderness Lodge, a news article indicated that Kavachi recently began to erupt after a long quiet period.
Read allWed, 19 Nov 2003, 06:00
An observer from The Wilderness Lodge reported that a 15-m-high island formed at Kavachi during an eruptive cycle 3 months prior to a visit on 16 November. By 16 November the summit had reduced to ~32 m below sea level. No evidence of volcanic activity was observed during the 3 previous months, which is the first time this has occurred in 4 years of observation.
Read allWed, 4 Dec 2002, 06:00
According to an observer at the Kavachi Wilderness Lodge, during October to November the top of Kavachi rose above sea surface, ultimately reaching 10 m a.s.l. The island that was produced was subsequently eroded by late-season southeasterly winds and swells.
Read allWed, 30 Jan 2002, 06:00
During visits to Kavachi in January, occasional explosive eruptions were seen that produced columns of steam, ash, rock, and water up to 1 km a.s.l. Sulfur slicks, small fragments of volcanic rock, and bubbles from the release of gas were visible at the sea surface. In addition, loud sounds were heard approximately every 2-15 minutes.
Read allWed, 16 Jan 2002, 06:00
During 27 November-13 December explosive eruptions occurred daily at Kavachi. During the next observation period (on 13 January), volcanic debris and gas bubbles were seen upwelling from the submarine volcano. The latter activity was more vigorous than similar activity seen in December 2001, and it was accompanied by frequent loud noises.
Read allWed, 21 Nov 2001, 06:00
A visit to Kavachi on 25 November revealed sulfur, mud, and tiny pieces of volcanic rock upwelling from the submarine volcano. The pieces of volcanic rock covered the sea surface over an area more than 100 m across. No explosive eruptions were seen during a 6 hour observation period.
Read allWed, 7 Nov 2001, 06:00
As of 1 November no eruptive activity had been observed at Kavachi for about 5 weeks. Kavachi was watched from the coast of Gatokae Island, at a post about 26 km from the volcano. Low-level activity may well have occurred that was not visible from this observation post.
Read allWed, 26 Sep 2001, 06:00
Kavachi erupted daily during August through mid-September. During August ash and volcanic projectiles were observed rising 400 m above sea level and the glow from the volcano was visible from the coast of Gatokae Island, 32 km away.
Read all