The #Coast Guard conducted a volcanic observation of #Iwojima by #Sea Guardian on Thursday, November 23.
As a result of the observations, eruptive activity was observed on Niijima Island off the southern coast of Iwo Jima.
Click here for a view of the eruption of Niijima off Oohama, Iwo Jima (infrared) ↓ Click here for a view of the eruption of Niijima off Oohama, Iwo Jima (infrared)
Strombolian activity fueled by the Southeast Crater of #Etna has been intensifying significantly for several hours. The emitted ash is being pushed by winds in a north/northeast direction. Photo taken from Vincenzo Modica's webcam
A horrific video shows climbers covered in ash as 42 people await rescue after Mount Marapi erupted.
The volcano in the West Sumatra province of Indonesia erupted on Sunday, spewing white-and-grey ash plumes about 9,800ft (3,000m) into the air, with hot ash clouds blowing several miles to the north, according to Indonesia's Volcanology and Geological Hazard Mitigation Centre.
According to reports, of 70 climbers, 28 have so far been successfully evacuated, with the rest still trapped. There were no casualties, however, said Ahmad Rifandi, an official at the Marapi monitoring post, adding that villagers have been advised to stay 1.8 miles (3km) from the crater's mouth and be aware of the danger of potential lava. National Disaster Management Agency spokesman Abdul Muhari said several villages were blanketed with falling ash.
He said Marapi's eruption alert was maintained at the second-highest level and that authorities have been closely monitoring the volcano after sensors picked up increasing activity in recent weeks. Japan's Meteorological Agency said on Sunday that it is currently assessing the possibility of a tsunami in the country because of Marapi's activity.
If a tsunami reaches Japanese coasts, the earliest possible swelling is expected in the Okinawa region at around 2100 JST (0900 GMT), it said. The nearly 9,480ft (2,900M) mountain has been active since January when it erupted, generating dense ash-and-steam plumes that rose as high as 1,300ft (400m) above the crater. No casualties were reported.
Mr Rifandi said: "For the ash rain, it has reached to Bukittinggi city," he said, referring to the third-largest city in West Sumatra that has a population of more than 100,000. It is hoped for people who have activities around Marapi mountain to wear hats, glasses and masks."
"The column of ash was observed in grey colour with thick intensity leaning toward the east," according to Hendra Gunawan, head of Indonesia's Centre of Volcanology and Geological Hazard Mitigation, in a statement. "The eruption is still ongoing." Marapi is among more than 120 active volcanoes in Indonesia, which is prone to seismic upheaval due to its location on the Pacific Ring of Fire, an arc of volcanoes and fault lines encircling the Pacific Basin.
New eruption phase of Erta Alé volcano in Ethiopia
Extensive lava flows have been observed from the North and South craters in the past few days.
Session Date: February 25th 2023
[...]
(MK Scarlett) There is a theory that connects the formation of cloud anomaly with future earthquakes, and a study published in 2022 says, "The physical mechanism of cloud anomaly was likely caused by electric field, which linked active fault, atmosphere circuit conduction current, and cloud anomaly, and thus provides a reasonable hypothesis of cloud anomaly." Does this connection exist?
A: Yes
Q: (MK Scarlett) Can so-called "orographic" clouds, such as lenticular ones, in some cases, be precursors of earthquakes?
A: Yes
Q: (MK Scarlett) What is the average period (in days) between the atmospheric fluctuation that forms these cloud anomalies and a potential earthquake?
A: 3 to 7.
Q: (Joe) Some of those clouds were seen in Turkey - strange clouds. They were kinda like domes with a hole in the middle, almost like a hat.
(Andromeda) How long before?
(Joe) A few days, I think.
Low-level eruptive activity continued at Shishaldin Volcano over the past week. Frequent, small, low-frequency earthquakes and minor explosions were detected throughout the week. Minor steam emissions were observed in web camera views this morning and weakly elevated surface temperatures were observed in satellite imagery of the summit occasionally this week. No sulfur dioxide emissions were detected in satellite data.
Thirteen significant explosive events have occurred at Shishaldin since July 12, 2023. These events have been preceded by increases in seismicity in the hours to days before they occur. It is unknown how long this period of ongoing activity will last. However, previous eruptions of Shishaldin Volcano have lasted weeks to months with repeated cycles of eruptive activity like those seen since July.
Local seismic and infrasound sensors, web cameras, and a geodetic network monitor Shishaldin Volcano. In addition to the local monitoring network,
AVO uses nearby geophysical networks, regional infrasound and lightning data, and satellite observations to detect eruptions.
Mother Earth is putting on a fiery show! The planet's newest volcano has decided to steal the spotlight, erupting in grand fashion and spewing rivers of molten lava. Picture this natural spectacle: a volcanic performance complete with glowing lava rivers flowing down the slopes. Situated in a remote part of the South Sandwich Islands, this newly minted volcano is a testament to the dynamic and ever-changing nature of our planet. Scientists are geeking out over the chance to study this fresh eruption, providing us with a front-row seat to Earth's spectacular geologic theater.
December 19 at 00:30
According to the latest measurements, the seismic activity is moving south towards Grindavík. The measured activity is just east of the magma tunnel that formed on November 10. This development of the seismic activity, together with measurements from GPS devices, is an indication that the magma is moving to the southwest and the eruption could extend in the direction of Grindavík.
18 Dec 2023 • 23:19
The first location of the fountain and the approximate length of the crack based on the very first information can be seen below. The eruption began at 22.17 following the earthquake that started around 21.
More information is expected from a flight with the Coast Guard's helicopter.
The estimated length of the crack is about 3.5 and has grown quite rapidly.
For comparison, the length of the fissure in the eruption at Litla-Hrút was about 8-900 m.
The estimated lava flow in the eruption is around 100 to 200 cubic meters per second, which is many times more than in previous eruptions on the Reykjanes Peninsula in recent years.