Surtseyan eruption along the coast of Yemen forms a new island – Today eruption cloud + stain !
Last update: December 30, 2011 at 3:07 pm by By Armand Vervaeck
Jorgen Aabech, a Norvegian volcano enthusiast writing already a long time in his blog vulkaner.no, wrote us an email on December 20 to attract our attention on a probably new eruption of the Jebel Zubair volcano, which is an island formation on the territory of Yemen. Jorgen asked us if we had any mention of earthquakes in the area, which was negative.
When looking at the Modis Terra and Aqua satellite picture on December 20, we saw indeed a very small cloud in the island area, but nothing important to us. We also followed the Sat24 weather satellite pictures for a while to eventually detect heat on their Infrared images, but also this was negative. This whole eruption, actually found by the scanning of Jorgen Aalbach (if we are right), was almost forgotten until NASA’s Earth Observatory published a far better satellite picture showing more detail of the eruption. Just like during the Eritrea Nabro eruption, satellite images are the only source in this part of the world (in other words, these countries have other concerns than following an active volcano area all the time)
Update December 30
– NASA Modis Aqua satellite picture is showing more activity today. The quality of the Satellite images differs because of indirect circumstances like high cloud, etc (visual image)
Update December 29 (all other info below).
– As you can see on the picture above, the eruption is still ongoing (white cloud and blue stain)
– It is a pity that nobody was around to make beautiful pictures from this Surtseyan eruption (not too late though – to all nature photographers : take your backpack and travel to Yemen (do not forget to hire some armed guards as the country has still a lot of armed rebels and as almost everyone carries a knife and a gun).
– The Yemen times, a local Yemenite newspaper (who does not mention the creation of a new island) wrote the following :
The Monitoring Center for the Study of Earthquakes and Volcanoes has reported the presence of light volcanic activity on one of the unpopulated islands of ‘Jabal Al-Zubair’ archipelago, 120 km northwest of Hodeida Governorate. Jamal Sha’alan, the manager of the center said that initial indications are that the volcanic eruption was light and will not pose a threat to marine navigation. Saleh Al-Maflahi, the assistant manager of the center, also confirmed that initial indications of the volcanic eruption are reassuring, saying that the centre has commissioned technical experts to travel to the site of the volcano to conduct studies. The team has installed a seismic monitoring station there to alert them to seismic activity that may be the precursor to volcanic activity, according to Al-Maflahi. “The volcanic activity and rising smoke was witnessed by some visitors,” he said, adding that a good deal of seismic activity had recently taken place. He said that the results of a survey of the area’s volcanic history showed that Jabal Al-Zubair is an active volcanic site, and that it witnessed volcanic activity 187 years ago. In September 2007, a volcano on Jabal Al-Tair Island – 20 km southwest of Al-Zubair and 140 kilometers off Yemen’s western coastline – caused the death of eight Yemeni soldiers in addition to injuring others stationed at a military base. Read the complete article here
The text below is courtesy Jorgen Aabech vulkaner.no and a few other sources which are referred to if used
December 19 – Jorgen Aabech wrote in his blog :
A possible eruption occurred at Az Zubair archipelago on 19th December 2011. Fishermen from Salif port city in the west of Yemen reported seeing an eruption with red lava rising to a height of 30 m. This was the first eruption the fisherman can recall from the area. Satellite images showed raised sulphur dioxide emissions close to the volcano on the following day.
On December 19 the NASA Aura/OMI SO² satellite captured a picture that revealed a strong SO² cloud column. This satellite is of great importance to detect remote located volcanoes.
December 20 – Jorgen Aabech Update (based on what he also read in Erik Klemetti Wired corner)
It seems like there is a lot of confusion about exactly where the eruption is taking place. A number of sources put the eruption at Jebel Zubair, another island volcano that is part of an archipelago that last erupted in 1824. Jebel Zubair is just to the south of Jebel at Tair, so looking at the OMI map and the new MODIS image found by Eruptions reader Kirby that looks to have a small plume (see above), it is more likely Jebel Zubair. However, there is still not a lot of information out there on this eruption.
December 22 – Jorgen Aabech
On 19 December a SO2 cloud was detected in an OMI satellite image. MODIS imagery from 20 December shows a plume rising from a submarine eruption about 1.5 km SW of Haycock and N of Rugged (near the N end of the Az-Zubair island group), and about 12 km NE of Jebel Zubair island.
A bathymetric sketch map made in 1973 indicates a water depth of about 100 m in that area.
Yemen TV showed an unstable and bad colored report in their news. We cannot trace whether this report is from this eruption, but it was published as it on You Tube. It is however hard to believe that the December 19 eruption (no other SO2 traces on the satellite maps) have build the island in only a week. A possibility is that the eruption had started a lot earlier in his submarine phase.
December 28 – Smithsonian Institution Global Volcanism program writes :
An eruption from the northern part of the Zubair Group continued during 21-27 December. MODIS imagery from NASA’s satellites on 22 December showed a plume, possibly containing ash, rising from what was thought to be a submarine eruption. Imagery acquired on 23 December from the Advanced Land Imager (ALI) on NASA’s EO-1 satellite showed a new island at the location with a plume rising from it, roughly 500 m N of Rugged Island and more than 500 m in diameter. The island was not present in a similar image acquired on 24 October 2007.
December 28 – NASA Earth Observatory – Proof of a new island
The Picture combination below from NASA Earth Observatory shows the birth of the new island. The cloud picture was acquired by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite. A thick plume rises from the island, dark near the bottom and light near the top, perhaps a mixture of volcanic ash and water vapor.
for more information and updates, go to: http://earthquake-report.com/2011/12/29/surtseyan-eruption-along-the-coast-of-yemen-forms-a-new-island-today-eruption-cloud-stain/