_http://www.chapintv.com/actualidad/santa-rosa--extrano-crater-se-formo-en-las-orillas-de-la-laguna-de-ixpaco--204359 said:
https://watchers.news/2019/01/16/large-number-of-dead-fish-sulfur-smell-mayotte-seismo-volcanic-crisis/?utm_source=dlvr.it&utm_medium=facebook said:Large number of dead fish, sulfur smell reported, Mayotte seismo-volcanic crisis intensifies
A large number of dead fish emerged at various sites off the barrier reef just east/southeast of Mayotte, the oldest volcanic island in the Comoros Basin located between Madagascar and Mozambique. This is the site of an intense earthquake swarm that started in May 2018 and continues to date.
Visual observations of dead fish are accompanied by a strong smell of gas, burning rubber, plastic or sulfur, officials said January 14. The information was confirmed by the representatives of the Fishermen's Cooperative of Mtsapere.
Specialists were immediately sent to the area to make an assessment, Mayotte Prefecture officials said in a statement released January 14 and asked fishermen to obtain additional information, including photographs, location and extent of the phenomenon and report them to DMSOI to help scientists determine the cause of the phenomenon.
There are several possible causes, including a direct link with the earthquake swarm and its volcanic origin which could have disturbed the fragile ecological balance of the shallows in which this fauna evolves, officials said.
Similar situations have been observed in lava flows at sea in Réunion in 2007 and Hawaii in the past.
Following additional information provided by fishermen, the prefecture released an update on January 15, recommending fishermen to exercise particular vigilance when approaching the following points:
12°51.99S 12°38.59S 13°01.27S 13°08.10S 13°24.03S 13°21.45S
045°26.11E 045°32.59E 045°21.04E 045°17.25E 045°01.50E 045°09.53E
Image credit: Google, The Watchers
Fishermen are urged not to fish in areas giving off a strong smell of gas, burning rubber, plastic or sulfur.
"Stay away from these areas and exercise great caution. Do not take any risk," Prefecture officials said.
Fishermen were asked to immediately inform the authorities of any new event, note their geographical positions, take photographs and handle fish samples to Marine Nature Park officials.
It is strictly prohibited to proceed with the sale of recovered fish, they said.
The population is asked to be very vigilant and refuse to buy and consume fish that are not usually found on the stalls.
"The news started to increase anxiety levels again, along with mistrust towards the authorities and scientific community. Citizens are craving to understand what's going on," Laure Fallou, EMSC's seismosociologist said.
Image credit: Google, EMSC, The Watchers
The swarm started at 05:14 UTC on May 10, 2018 and increased around 12:00 UTC with magnitudes close to 3.0. Magnitudes further increased to 3.5 and 3.7 by 16:40 UTC.
The first quake felt by the population was M4.5 at 23:19 UTC on May 10, according to the BRGM, the France-based geological agency serving the territory.
This abnormal earthquake swarm continued for the next two months, creating anxiety and stress among locals and forcing authorities to open up a psychological support unit on June 12.
While there have been no serious injuries or fatalities, locals reported minor damage to buildings, including a school in Dembeni. In addition, at least 10 families have been evacuated from damaged homes and temporarily relocated.
Mayotte’s firefighters are conducting drills designed to simulate rescuing people trapped by a landslide, and emergency experts are teaching island residents to check their homes and businesses for cracked walls or other signs of stress, Africa Times reported June 30, 2018.
One resident told the paper he left his home because of meters-long cracks in the walls, along with his 80-year-old mother who had become agitated by the hundreds and hundreds of quakes that are strong enough to be felt. Many people slept in the streets when the swarm began, unsure if the shaking would become worse and potentially collapse their homes and trap them inside.
Others began to have anxiety attacks, with each quake followed by dozens of calls to Mayotte’s regional health authorities.
The head of Pamandzi College said in a television interview that some teachers are on sick leave because they do not sleep at night. Other teachers do not plan to return to Mayotte after the school holidays if the seismic activity continues, he said.
Image credit: BRGM
An atypical very low frequency signal originating near the island of Mayotte was detected by international networks around the world just before 09:30 UTC on November 11, 2018. The signal repeated in a wave about every 17 seconds, lasting for about 20 minutes in total. Signals of this type are characteristic of volcanic phenomena, BRGM scientists say.
"The appearance of this earthquake swarm in May 2018 took scientists by surprise. Geological knowledge of the swarm zone is limited, but a clearer understanding of the phenomenon is emerging as observations continue. Different hypotheses as to their causes have been investigated."
In addition to the seismic measurements used to track how this swarm is evolving, new data were analyzed in October and November 2018, especially those on deformation of the island's surface (GPS measurements by the IGN). The team working at the Geology Laboratory of the Ecole Normale Supérieure in Paris has shown that the current phase in the swarm is accounted for by a volcanic component.
"These observations, therefore, back up the hypothesis of a combination of tectonic and volcanic effects accounting for a geological phenomenon involving a seismic sequence and a volcanic phenomenon," BRGM said in November 2018, adding that this hypothesis will need to be confirmed by future scientific studies.
"The location of the swarm is on the edge of the geological maps we have," said Nicolas Taillefer, head of the seismic and volcanic risk unit at BRGM. "There are a lot things we don't know."
Image credit: ENS
Since mid-July [to November 2018], GPS stations on the island have tracked it sliding more than 61 mm (2.4 inches) to the east and 30 mm (1.2 inches) to the south, according to data provided by the Institut National de L’information Géographique et Forestière.
Using these measurements, Pierre Briole of the Ecole Normale Supérieure in Paris estimated that a magma body that measures about 1.4 km3 (0.3 mi3) is squishing its way through the subsurface near Mayotte.
The last known volcanic eruption in this area took place in 2050 BCE ± 500 years.
Geological background
Mayotte Island in the Mozambique Channel between the northern tip of Madagascar and the eastern coast of Africa consists of two volcanoes with diverse geochemistry that were active from the Pliocene to the Holocene.
Lavas on the NE were active from about 4.7 to 1.4 million years and on the south from about 7.7 to 2.7 million years.
Mafic activity resumed on the north from about 2.9 to 1.2 million years and on the south from about 2 to 1.5 million years. Morphologically youthful-looking maars are present on Mayotte Island, and Zinke et al. (2003) found several pumice layers of Holocene age in gravity cores on the barrier reef-lagoon complex at Mayotte. (GVP)
Kuchinoerabu eruption and volcanic ash_https://www.reuters.com/article/us-japan-volcano/volcano-erupts-in-southern-japan-no-evacuation-warning-idUSKCN1PB03M said:
_http://www.ticotimes.net/2019/01/20/rincon-de-la-vieja-registers-overnight-eruption said:Rincón de la Vieja erupted early Sunday morning, sending volcanic rock into nearby rivers, according to the Volcanological and Seismological Observatory of Costa Rica (OVSICORI).
OVSICORI data indicates a five-minute eruption occurred at 1:26 a.m. Sunday. The organization said it could not calculate the height of the ash plume due to lack of visibility.
OVSICORI shared a collage of images showing incandescent material near the Rincón de la Vieja crater (top) and volcanic material being carried by northerly rivers (middle and bottom).
Materials dragged by the current of the Azufrado River
Costa Rica’s National Emergency Commission (CNE) has not yet issued a statement. The CNE recently announced increased security measures at the nation’s active volcanoes.
Rincón de la Vieja Volcano is located in the eponymous national park in the Guanacaste province. The National Park attracts visitors due to its unique flora and fauna, natural water attractions and periodic geothermal activity.
In 2017, more than 82,000 people visited Rincón de la Vieja National Park.
https://watchers.news/2019/01/21/bezymianny-eruption-january-20-2019/?utm_source=dlvr.it&utm_medium=facebook said:
https://watchers.news/2019/01/23/eruption-at-mount-michael-saunders-island-antarctica/?utm_source=dlvr.it&utm_medium=facebook said:Eruption at Mount Michael, Saunders Island, Antarctica
Ash cloud top was estimated at a height of about 2.1 km (7 000 feet) above sea level.
Image courtesy NASA/NOAA Suomi NPP/VIIRS. Acquired January 22, 2019
Volcanic ash plume moving southeast is identifiable from visible imagery under the partially covered sky, the Buenos Aires VAAC reported 15:49 UTC.
...
Geological summary
Saunders Island is a volcanic structure consisting of a large central edifice intersected by two seamount chains, as shown by bathymetric mapping (Leat et al., 2013).
The young constructional Mount Michael stratovolcano dominates the glacier-covered island, while two submarine plateaus, Harpers Bank and Saunders Bank, extend north. The symmetrical Michael has a 500-m-wide (1 640 feet) summit crater and a remnant of a somma rim to the SE. Tephra layers visible in ice cliffs surrounding the island are evidence of recent eruptions.
Ash clouds were reported from the summit crater in 1819, and an effusive eruption was inferred to have occurred from a N-flank fissure around the end of the 19th century and beginning of the 20th century. A low ice-free lava platform, Blackstone Plain, is located on the north coast, surrounding a group of former sea stacks.
A cluster of parasitic cones on the SE flank, the Ashen Hills, appear to have been modified since 1820 (LeMasurier and Thomson, 1990). Vapor emission is frequently reported from the summit crater. Recent AVHRR and MODIS satellite imagery has revealed evidence for lava lake activity in the summit crater. (GVP)
https://www.volcanodiscovery.com/michael/news/73933/Michael-Volcano-Volcanic-Ash-Advisory-continuous-ash-emissions.html said:
Satellite image of Michael volcano on 22 Jan 2019
Edit: Add the parragraphs where it mentions about the webcamshttps://volcanohotspot.wordpress.com/2015/10/15/an-elusive-volcano-mount-michael-south-sandwich-islands/ said:South Georgia and the South Sandwich Islands
(SGSSI) is a British overseas territory in the southern Atlantic Ocean. It is a remote and inhospitable collection of islands, far away from commercial shipping and air routes, consisting of South Georgia and the South Sandwich Islands, with the capital King Edward Point. There is no native population on the islands; the present inhabitants are the British Government Officer, scientists and staff of the British Antarctic Survey and the museum in Grytviken.
The South Sandwich Islands are extremely active volcanically. Mt. Michael, on Saunders Island, is roughly in the middle of the island chain. Like the other islands, Saunders is described as impossible to be explored on foot due to its rugged and deeply crevassed rocky and icy ground. Available are descriptions and drawings/photos made on excursions from a ship or helicopter, but even those cannot be obtained on more than a few days each year because of fog, rain, snow, wind and other unfavorable conditions.
Because of these difficulties and the remote location, there have been only three scientific expeditions to the chain. These challenges also make installing and maintaining any volcano-monitoring equipment, such as seismometers and GPS units, impractical. Only recently, satellite data have provided observations of volcanic activity in the island group, and offer the only practical means to regularly characterize activity in these islands.
The young Mount Michael stratovolcano dominates glacier-covered Saunders Island. The symmetrical 990-m-high edifice has a 700-m-wide summit crater and a remnant of a somma rim to the SE. Vapor emission is frequently reported from the summit crater. Tephra layers visible in ice cliffs surrounding the island are evidence of recent eruptions. Ash clouds were reported from the summit crater in 1819, and an effusive eruption was inferred to have occurred from a north-flank fissure around the end of the 19th century and beginning of the 20th century. A low ice-free lava platform, Blackstone Plain, is located on the north coast, surrounding a group of former sea stacks. A cluster of parasitic cones on the SE flank, the Ashen Hills, appear to have been modified since 1820 (LeMasurier and Thomson 1990). The biggest of them has a crater abt. 1km in diameter and 150m deep.
...
There are two interesting webcams on the BAS website: one mounted on the Oceanographic research ship ORS James Clark Ross (UK), which updates every 15 minutes. The Radio Officer will usually add a small blurb containing information about where the ship is, and if you are lucky you might just see the volcanoe(s) in an image (track ship ).
And the other is mounted on RRS Ernest Shackleton. During the Antarctic summer, it is possible to see stunning polar scenery, icebergs and mountains. During the Antarctic winter, the Shackleton undertakes survey work in the North Sea so you may catch a glimpse of an oil or gas platform. It updates approximately once every hour.
It did it again, and with more force
https://watchers.news/2019/01/24/high-impact-eruption-manam-volcano-january-24-2019/?utm_source=dlvr.it&utm_medium=facebook said:Destructive eruption at Manam volcano, residents call urgent evacuation, VA to 16.7 km (55 000 feet) a.s.l., P.N.G.
A new high-impact eruption took place at Manam volcano, Papua New Guinea around 16:20 UTC on January 24, 2019. The volcano is continuously erupting for more than 24 hours and has destroyed telecommunication towers, water sources and other infrastructure. Local residents are sending out calls for immediate evacuation. The Aviation Color Code is Red.
Volcanic ash to 16.7 km (55 000 feet) above sea level, moving west was observed on satellite imagery taken 17:00 UTC. Ongoing volcanic ash to 5.5 km (18 000 feet) is expected to be moving east, the Darwin VAAC reported 17:31 UTC.
The high-level eruption appears to have now ceased and is expected to dissipate within 12 hours.
It comes just one day after another high-impact eruption at Manam ejected ash up to 15.2 km (50 000 feet) a.s.l.
Kessy Sawang, Head of Secretariat at Manam Resettlement Authority, has sent out calls for immediate evacuation of residents living near the volcano:
Manam erupts continuously for 24 hours now as of 1 pm yesterday (unlike only 2 hours in the past). Very high temperatures. Digicel tower destroyed. People may perish next 48 hours if no help goes through.Chairman of Manam Disaster Working Committee and Ward Member for Baliau just called. Water sources & food gardens completely destroyed.Urgently need a temporary shelter on mainland. Need MV Godawan or transport for evacuation.The people of Baliau (2257) and Dugulava were sent back to the volcano by a Government decision. They have no where else to go at the moment.Chairman MRA Ken Fairweather says we look at Nubia. But immediate is to existing Care Centres where the other IDPs are. Going to Disaster Centre now.- Kessy Sawang, January 24, 2019https://www.facebook.com/photo.php?fbid=2321570624520204&set=pcb.2321579627852637&type=3&theater
Have not found more images/videos of this event, just this from January 14th, 2019
