Volcanic Ash Forces Closure of Five Indonesian Airports

Volcanic eruption forces closure of five airports in Indonesia

Continued eruptions at Mount Raung in East Java has forced the authorities to shut down five airports in Indonesia, after volcanic ash disrupted many flights between Bali and Australia for a second day. Flight cancellations have since stranded thousands of traveler.

Increased activity was first detected at the volcano on June 24, 2015. The volcano began to eject volcanic matter on June 29, creating an ash cloud that led to warnings being issued to residents within a 3-km radius of the caldera, and flight disruptions in and out of Bali.

The five airports that are currently closed are:

• Denpasar International Airport in Bali (Ngurah Rai International Airport)
• The International Airport in Lombok
• Selaparang Airport (Lombo)
• Blimbingsari Airport in Banyuwangi (Java)
• Notohadinegoro Airport  (Jember, East Java)

Mt. Raung
The 3,333-meter volcano, one of Indonesia’s most active volcanoes, is a massive stratovolcano located in the province of East Java, and has a 2-km-wide and 500-metre-deep caldera. Ruang is about 140km northwest of Bali’s Denpasar airport.

Continued Eruptions

Local Volcanologists say the ash eruptions could last for several weeks, possibly longer. In that case tens of thousands of residents in East Java and neighboring islands may have to be evacuated. [See also earlier blog entries on Impact of Indonesian volcanic eruption s on Singapore.]

Volcanology of Java

Made up almost entirely of volcanic eruptions, the island of Java contains dozens of volcanoes including at least 45 that are considered to be “active” volcanoes.

Related Links

• Mt. Raung Eruptions Force Flight Cancellations July 3, 2015
• Mount Raung volcanic ash cloud disrupts Jetstar and Virgin Australia flights to Bali (see video)

Mt. Raung Eruptions Force Flight Cancellations

Volcanic ash from Mt. Raung forces flight cancellation to and from Bali

Eruptions at Mt. Raung have prompted the authorities to raise the volcanic alert from Level 2 to Level 3. The volcano has been ejecting volcanic matter into the air since Sunday, said the Volcanology and Geological Hazard Mitigation Center (PVMBG).

Increased activity was detected at the volcano on June 24, 2015. The volcano began to eject volcanic matter on June 29, creating an ash cloud that led to warnings being issued to residents within a 3-km radius of the caldera, and flight disruptions in and out of Bali.

“The Jember Disaster Mitigation Agency (BPBD) in East Java said on Monday that the 3,333-meter Mount Raung had discharged molten lava on Sunday evening, confirming the authorities’ recent decision to increase the volcano’s alert status, said a report.

More than 2,000 residents in “two districts in Bondowoso lie within Mt. Raung’s potentially Disaster Prone Area (KRB),” and may have to be evacuated in the event of a major eruption.

Mt. Raung
The 3,333-meter volcano, one of Indonesia’s most active volcanoes, is a massive stratovolcano located in the province of East Java, and has a 2-km-wide and 500-metre-deep caldera.

Ruang is about 140km northwest of Bali’s Denpasar airport.

Volcanology of Java

Made up almost entirely of volcanic eruptions, the island of Java contains dozens of volcanoes including at least 45 that are considered to be “active” volcanoes.

Mt Sinabung Remains on ‘Red Alert’

Indonesian Volcano Alerts

Mt Sinabung remains on Red Alert, or “Level IV,” the highest level of activity, and three other volcanoes, Soputan, Karangetang and Lokon, stay at Level III, or Orange Alert, the second highest level of activity, according to Indonesia’s Volcanology and Geological Disaster Mitigation Center (PVMBG).

Up to 3,000 residents living within a 7-km radius of Mt. Sinabung, to the south and southeast of the volcano, were evacuated on June 4, 2015.

Following table shows the current status, as of June 14, 2015.

Indonesia Volcano Alerts as of June 14, 2015. Source: PVMBG. Image enhanced by FIRE-EARTH Blog.

Approximate location of Sinabung is marked  on the map by FEWW. Mount Sinabung is one of Indonesia’s 130  active volcanoes

Related Links

• 22 Indonesian Volcanoes Remain on High Alerts November 16, 2013

 

Sinabung Eruption Leaves 14 Dead, Thousands Evacuated

Sumatra volcano in deadly eruption

Mt Sinabung Erupted three times on Saturday leaving at least 14 people dead, including a group of school children from Medan on a science trip, and three others critically injured. Authorities were again forced to evacuate tens of thousands of people from 16 villages from the 5km – 7km exclusion zone near the volcano.

“This is the first direct impact of the Mt. Sinabung eruptions. Before the Saturday incident, the ongoing eruptions have already claimed the lives of 31 evacuees, as a result of various illnesses such as breathing difficulties, depression, asthma and hypertension.” Jakarta Post reported.

Some 14,000 of more than 30,000 evacuees had just been allowed to return home on Friday, following earlier eruptions.

Villagers flee as Mt Sinabung spews plumes of hot ash and smoke engulfing at least 16 villages. Photo credit: ANTARA /Irwansyah Putra. Image may be subject to copyright. More images…

The volcano became restive in 2010, after more than 400 years of dormancy, and has been erupting sporadically since.

Approximate location of Sinabung is marked  on the map by FEWW. Mount Sinabung is one of Indonesia’s 130  active volcanoes

Sinabung Volcano: Summary of Details

Country: Indonesia
Region: Sumatra
Volcano Type: Stratovolcano
Volcano Status: Holocene
Last Known Eruption: Unknown [1600?]
Summit Elevation: 2,460m
Latitude: 3.17°N Longitude: 98.392°E
Source: GVP

Sinabung is located in Group K Volcanoes

Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.

The PVMBG categorizes Sinabung as a type A volcano, or those that have erupted since 1600. Type B volcanoes have not erupted since 1600 but show signs of activity, and type C are those that have not erupted in recorded history.

Indonesian Volcanoes

Indonesian Volcanoes have been responsible for a number of cataclysmic explosions in modern history.

An 1888 lithograph of the 1883 violent explosion of Krakatau.

Based on their models, our colleagues at EDRO forecast that volcanic activity on the island of Sumatra could cause the collapse of Singapore. However, they have not disclosed any further detail.

Mt Sinabung erupted explosively again on November 12, 2013 for a second time in 9 days. Image credit: CRIonLine via Xinhua. More images…

Chronology of Recent Eruptions

• Mass Evacuations as Sinabung Erupts Again January 8, 2014
• Mass Evacuation Ordered as Mt SINABUNG Put on Red Alert November 24, 2013
• A Second Indonesian Volcano Erupts Posted on November 19, 2013
• Sinabung Volcano Explodes November 3, 2013
• Thousands Flee Mount Sinabung Eruption September 16, 2013
• 22 Indonesian Volcanoes Remain on High Alerts Posted on November 16, 2013
• Mount Merapi Eruption Satellite Image November 16, 2010
• Merapi’s latest eruption the deadliest so far  November 5, 2010
• Mt Merapi Erupts Again, 70,000 Evacuated November 1, 2010

• Sinabung Getting More Serious September 7, 2010
• Sinabung Erupts Again – Strongest Explosion to Date September 7, 2010

• Sinabung Erupts Again August 30, 2010
• Mount Sinabung Erupts August 29, 2010

Mass Evacuations as Sinabung Erupts Again

Mount Sinabung Continues to Eject Volcanic Materials into the Air

Some 22,000 people living near Sinabung volcano have been evacuated Since Monday after the volcano erupted in North Sumatra, Indonesia.

The volcano is spewing columns of ash and smoke up to 4.5km above the summit crater, authorities said.

About 22,000 people have been evacuated near Mt Sinabung as the volcano continues to erupt. Mount Sinabung has been ejecting columns of ash and smoke up to 4.5km above the summit crater since Saturday. More than 60 pyroclastic flows extending up to 5 km from the crater have also been recorded. Photo credit: Agung Kuncahya B./Xinhua.  More images…

“The National Disaster Mitigation Agency (BNPB) has instructed all relevant ministries, government institutions, local disaster mitigation agencies and the Karo regency administration in North Sumatra to prepare for a worst-case scenario following an increase in Mount Sinabung’s volcanic activity during the past week,” said a report.

The “worst-case scenario” comes into if the exclusion zone is extended from its latest 7km radius, southeast slope of the volcano, to between 7.5 and 10 km from the crater.

More than 60 pyroclastic flows extending up to 5 km from the crater have been recorded with the flow volume increasing every day, said The National Disaster Mitigation Agency (BNPB).

The volume of volcanic material ejected so far is about a quarter of the total 2,540,000 cubic meters formed in Mt. Sinabung’s crater. “This means that the pyroclastic potential stored in the volcano’s lava dome is still substantial; so if it should all come out, the threat would be devastating,” Jakarta post quoted an official as saying.

Approximate location of Sinabung is marked  on the map by FEWW. Mount Sinabung is one of Indonesia’s 130  active volcanoes

Sinabung Volcano: Summary of Details

Country: Indonesia
Region: Sumatra
Volcano Type: Stratovolcano
Volcano Status: Holocene
Last Known Eruption: Unknown [1600?]
Summit Elevation: 2,460m
Latitude: 3.17°N Longitude: 98.392°E
Source: GVP

Sinabung is located in Group K Volcanoes

Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.

The PVMBG categorizes Sinabung as a type A volcano, or those that have erupted since 1600. Type B volcanoes have not erupted since 1600 but show signs of activity, and type C are those that have not erupted in recorded history.

Indonesian Volcanoes

Indonesian Volcanoes have been responsible for a number of cataclysmic explosions in modern history.

An 1888 lithograph of the 1883 violent explosion of Krakatau.

Based on their models, our colleagues at EDRO forecast that volcanic activity on the island of Sumatra could cause the collapse of Singapore. However, they have not disclosed any further detail.

Chronology of Recent Eruptions

• Mass Evacuation Ordered as Mt SINABUNG Put on Red Alert November 24, 2013
• A Second Indonesian Volcano Erupts Posted on November 19, 2013
• 22 Indonesian Volcanoes Remain on High Alerts Posted on November 16, 2013
• Sinabung Volcano Explodes Posted on November 3, 2013
• Thousands Flee Mount Sinabung Eruption September 16, 2013

• Sinabung Erupts Again August 30, 2010
• Mount Sinabung Erupts  August 29, 2010
• Sinabung Erupts Again – Strongest Explosion to Date September 7, 2010
• Mount Merapi Eruption Satellite Image November 16, 2010
• Merapi’s latest eruption the deadliest so far  November 5, 2010
• Mt Merapi Erupts Again, 70,000 Evacuated November 1, 2010
• Mount Sinabung Erupts  August 29, 2010
• Sinabung Erupts Again  August 30, 2010
• Sinabung Erupts Again – Strongest Explosion to Date September 7, 2010
• Sinabung Getting More Serious September 7, 2010

Mass Evacuation Ordered as Mt SINABUNG Put on Red Alert

18,000 people evacuated as Sinabung activity intensifies

Mt Sinabung’s latest explosive eruption has prompted the authorities to raise the volcanic alert to the highest level, “siaga,” or “red alert,” according to Volcanology and Geological Disaster Mitigation Center.

The alert level was raised from “orange” or “level III ” to the highest level “red” or “level IV” by PVMBG on Sunday, as the authorities evacuated an additional  11,618 residents from 19 villages and expanded the evacuation zone to a 5-km exclusion  zone from 3 km previously.

“This is Sinabung’s highest level of activity. The intensity of the eruptions continues to increase,” said Hendrasto, head of PVMBG.

Villagers evacuate to a safe area, as Mount Sinabung ejects ash into air at Aman Teran village in Karo district, Indonesia’s North Sumatra province, November 24, 2013. Credit: Reuters/YT Haryono. More images…

As of 2 p.m. local time on Sunday, Sinabung was continuing to eject an 8-km high column of smoke and ash into the air, he said.

Some 6,000 villagers had already been evacuated from the 3-km exclusion zone, about 90 km from Medan, capital of North Sumatra province.

The North Sumatra health has distributed 180,000 face masks, medicine and 4 tons of baby formula to relief posts in Karo regency, reported Jakarta Post.

Mt Sinabung erupted explosively again on November 12, 2013 for a second time in 9 days. Image credit: CRIonLine via Xinhua. More images…

Approximate location of Sinabung is marked  on the map by FEWW. Mount Sinabung is one of Indonesia’s 130  active volcanoes

Sinabung Volcano: Summary of Details

Country: Indonesia
Region: Sumatra
Volcano Type: Stratovolcano
Volcano Status: Holocene
Last Known Eruption: Unknown [1600?]
Summit Elevation: 2,460m
Latitude: 3.17°N Longitude: 98.392°E
Source: GVP

Sinabung is located in Group K Volcanoes

Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.

The PVMBG categorizes Sinabung as a type A volcano, or those that have erupted since 1600. Type B volcanoes have not erupted since 1600 but show signs of activity, and type C are those that have not erupted in recorded history.

Mount Sinabung ejected tephra into the air as seen from Tanah Karo, North Sumatra, Indonesia, Friday, Sept. 3, 2010. (AP Photo/Dedy Zulkifli). Image may be subject to copyright.

Indonesian Volcanoes

Indonesian Volcanoes have been responsible for a number of cataclysmic explosions in modern history.

An 1888 lithograph of the 1883 violent explosion of Krakatau.

Based on their models, our colleagues at EDRO forecast that the collapse of Singapore may occur as a result of volcanic activity on the island of Sumatra. However, they have not disclosed any further detail.

Chronology of Recent Eruptions

• A Second Indonesian Volcano Erupts Posted on November 19, 2013
• 22 Indonesian Volcanoes Remain on High Alerts Posted on November 16, 2013
• Sinabung Volcano Explodes Posted on November 3, 2013
• Thousands Flee Mount Sinabung Eruption September 16, 2013

• Sinabung Erupts Again August 30, 2010
• Mount Sinabung Erupts  August 29, 2010
• Sinabung Erupts Again – Strongest Explosion to Date September 7, 2010

• Mount Merapi Eruption Satellite Image November 16, 2010
• Merapi’s latest eruption the deadliest so far  November 5, 2010
• Mt Merapi Erupts Again, 70,000 Evacuated November 1, 2010

• Mount Sinabung Erupts  August 29, 2010
• Sinabung Erupts Again  August 30, 2010
• Sinabung Erupts Again – Strongest Explosion to Date September 7, 2010
• Sinabung Getting More Serious September 7, 2010

Mt Bromo Eruption Closes Airport

Java’s Bromo Volcano Erupts

Ash from Mt Bormo forces nearby Malang city’s airport to close

Indonesian government raised the eruption threat warning to code red, the highest alert status.

“The ash contains chemical substances which could cause engine trouble” to planes flying nearby, officials said.

The volcano was reportedly ejecting columns of ash into the air to a height of about 700 meters (2,300 feet).

The volcano is expected to continue erupting for “many days”  a government volcanologist said.

Tengger Caldera

Photo by Indonesia Department of Information

The 16-km-wide Tengger caldera is located at the northern end of a volcanic massif extending from Semeru volcano. The massive Tengger volcanic complex dates back to about 820,000 years ago and consists of five overlapping stratovolcanoes, each truncated by a caldera. Lava domes, pyroclastic cones, and a maar occupy the flanks of the massif. The Ngadisari caldera at the NE end of the complex formed about 150,000 years ago and is now drained through the Sapikerep valley. The most recent of the Tengger calderas is the 9 x 10 km wide Sandsea caldera at the SW end of the complex, which formed incrementally during the late Pleistocene and early Holocene. An overlapping cluster of post-caldera cones was constructed on the floor of the Sandsea caldera within the past several thousand years. The youngest of these is Bromo, one of Java’s most active and most frequently visited volcanoes. (Source: GVP)

Related Links:

• Krakatau Powers On
• 33 volcanic tremors rock Mt. Bulusan
• Mount Merapi Eruption Satellite Image

• 3 Explosions Heard at Krakatau Volcano
• More Indonesian Volcanoes Could Erupt Simultaneously [Probability ≥ 0.55]
• Singapore Sling

Latest Entries on Mt Merapi

• Merapi’s latest eruption the deadliest so far
• 2010 Disaster Calendar [NOVEMBER]

• Mt Merapi Erupts Again, 70,000 Evacuated
• Mount Merapi Erupts Repeatedly
• Tsunami Claims 200 After 7.7Mw Quake Strikes Indonesia

• 2010 disasters
• 2011 SIX TIMES MORE DISASTROUS THAN 2010
• Collapse Diary
• 2010 Disaster Calendar

More Volcano Links

• A New Era of Intense Volcanic Unrest May Have Begun
• World’s Dormant Volcanoes Firing
• VolcanoWatch Weekly [16 September 2009]
• Sinabung Getting More Serious
• Sinabung Erupts Again

FEWW Volcanic Activity Forecast

• Sumatra’s Mt Kerinci Erupts
• Volcano Watch Weekly: 23 April 2009
• Weekly Volcano Watch: 16 April 2009
• Weekly Volcano Watch: 2 April 2009
• Tonga’s Metis Shoal may be erupting
• Rumble III Volcano “blew its top!”

Other Related Links:

• FEWW Volcano Links
• Volcanoes
• FEWW Earthquake Links

Krakatau Powers On

Indonesia’s Krakatau: The Unfinished Story

Anak Krakatau ejects a thick plume of ash, steam and volcanic gases on November 17, 2010. This true-color image was acquired by NASA’s ALI on EO-1 as the activity at the volcano was beginning to wane. Source: NASA-EO

Mt Krakatau, Sinabung and Merapi Volcanoes Location Map. Source of the original map: USGS. Map enhanced by Fire-Earth. Click image to enlarge.

Krakatau Islands Location Map. Original map enhanced by Fire-Earth.

The Island Map (Simkin and Fiske, 1983). Image may be subject to copyright.

Krakatau Image by Landsat Pathfinder Project (Dated May 18, 1992)

William Ashcroft painting “On the Banks of the River Thames” in London, November 26, 1883 [Exactly three months after Krakatoa’s cataclysmic 1883 eruption.]

The Krakatoa eruption affected the climate driving the weather patterns wild for the next 5 years. Average global temperatures fell by about 1.2 °C in the following years, returning to normal only in 1888.

The violent explosions [August 27, 1883]

Krakatoa is a volcanic island in the Sunda Strait located between Indonesian islands of Java and Sumatra. Both the volcano and island group share the same name.

Four enormous explosions almost entirely destroyed Krakatoa island on August 27, 1883. The violent explosions were reportedly heard in Perth, Western Australia,  some 3,500 km away. It was heard even on the island of Rodrigues near Mauritius, about 4,800 km away.

The shockwave from the last explosion, which ejected volcanic matter 80 km into the atmosphere, echoed around the planet seven times.

An 1888 lithograph of the 1883 violent explosion of Krakatau.

The eruption ejected about 21 cubic kilometers of volcanic matter and completely destroyed two-thirds of the Krakatoa island.

Related Links:

• 3 Explosions Heard at Krakatau Volcano
• More Indonesian Volcanoes Could Erupt Simultaneously [Probability ≥ 0.55]
• Singapore Sling

Latest Entries on Mt Merapi

• Merapi’s latest eruption the deadliest so far
• 2010 Disaster Calendar [NOVEMBER]

• Mt Merapi Erupts Again, 70,000 Evacuated
• Mount Merapi Erupts Repeatedly
• Tsunami Claims 200 After 7.7Mw Quake Strikes Indonesia

• 2010 disasters
• 2011 SIX TIMES MORE DISASTROUS THAN 2010
• Collapse Diary
• 2010 Disaster Calendar

More Volcano Links

• A New Era of Intense Volcanic Unrest May Have Begun
• World’s Dormant Volcanoes Firing
• VolcanoWatch Weekly [16 September 2009]
• Sinabung Getting More Serious
• Sinabung Erupts Again

FEWW Volcanic Activity Forecast

• Sumatra’s Mt Kerinci Erupts
• Volcano Watch Weekly: 23 April 2009
• Weekly Volcano Watch: 16 April 2009
• Weekly Volcano Watch: 2 April 2009
• Tonga’s Metis Shoal may be erupting
• Rumble III Volcano “blew its top!”

Other Related Links:

• FEWW Volcano Links
• Volcanoes
• FEWW Earthquake Links

3 Explosions Heard at Krakatau Volcano

More Volcanic Unrest in Indonesia

Villagers flee after Krakatau explodes 3 times

Krakatau Erption in 2008. Credit: Thomas.Schiet. Click image to enlarge.

About 1,000 Villagers fled the area after three loud explosions were heard from Mount Anak Krakatau, reports say.

“We received information that the number of earthquakes increased to 933 on Friday. This is harmless as long as the villagers still stay at least two kilometers away,” Anto Pambudi, head of the team observing Mt. Anak Krakatau said.

The alert status for the volcano has now been raised to “caution.”

Mt Krakatau, Sinabung and Merapi Volcanoes Location Map. Source of the original map: USGS. Map enhanced by Fire-Earth. Click image to enlarge.

Krakatau Islands Location Map. Original map enhanced by Fire-Earth.

The Island Map (Simkin and Fiske, 1983). Image may be subject to copyright.

Krakatau Image by Landsat Pathfinder Project (Dated May 18, 1992)

William Ashcroft painting “On the Banks of the River Thames” in London, November 26, 1883 [Exactly three months after Krakatoa’s cataclysmic 1883 eruption.]

The Krakatoa eruption affected the climate driving the weather patterns wild for the next 5 years. Average global temperatures fell by about 1.2 °C in the following years, returning to normal only in 1888.

The violent explosions [August 27, 1883]

Krakatoa is a volcanic island in the Sunda Strait located between Indonesian islands of Java and Sumatra. Both the volcano and island group share the same name.

Four enormous explosions almost entirely destroyed Krakatoa island on August 27, 1883. The violent explosions were reportedly heard in Perth, Western Australia,  some 3,500 km away. It was heard even on the island of Rodrigues near Mauritius, about 4,800 km away.

The shockwave from the last explosion, which ejected volcanic matter 80 km into the atmosphere, echoed around the planet seven times.

An 1888 lithograph of the 1883 violent explosion of Krakatau.

The eruption ejected about 21 cubic kilometers of volcanic matter and completely destroyed two-thirds of the Krakatoa island.

Related Links:

• More Indonesian Volcanoes Could Erupt Simultaneously [Probability ≥ 0.55]
• Singapore Sling

Latest Entries on Mt Merapi

• Merapi’s latest eruption the deadliest so far
• 2010 Disaster Calendar [NOVEMBER]

• Mt Merapi Erupts Again, 70,000 Evacuated
• Mount Merapi Erupts Repeatedly
• Tsunami Claims 200 After 7.7Mw Quake Strikes Indonesia

• 2010 disasters
• 2011 SIX TIMES MORE DISASTROUS THAN 2010
• Collapse Diary
• 2010 Disaster Calendar

More Volcano Links

• A New Era of Intense Volcanic Unrest May Have Begun
• World’s Dormant Volcanoes Firing
• VolcanoWatch Weekly [16 September 2009]
• Sinabung Getting More Serious
• Sinabung Erupts Again

FEWW Volcanic Activity Forecast

• Sumatra’s Mt Kerinci Erupts
• Volcano Watch Weekly: 23 April 2009
• Weekly Volcano Watch: 16 April 2009
• Weekly Volcano Watch: 2 April 2009
• Tonga’s Metis Shoal may be erupting
• Rumble III Volcano “blew its top!”

Other Related Links:

• FEWW Volcano Links
• Volcanoes
• FEWW Earthquake Links