Fire Earth

Mass die-offs from human impact and planetary response to the assault could occur by early 2016

Posts Tagged ‘Sumatra’

Strong Quake Strikes near Ninetyeast Ridge

Posted by feww on June 15, 2014

SEISMIC HAZARD
HEIGHTENED GLOBAL SEISMICITY
SCENARIOS 08, 07
.

M6.4 Event Occurs SW of Sumatra

Centered at 10.056°S, 91.056°E, the event 0curred at a depth depth of 7.1km (4.4mi), prompting Australian authorities to to issue a tsunami warning for Cocos Island, which has since been canceled.

EQ Details

Magnitude: 6.4Mw

Event Time: 2014-06-14 11:11:00UTC

Location: 10.056°S 91.056°E depth=7.1km (4.4mi)
Nearby Cities:

  • 671km (417mi) WNW of West Island, Cocos Islands
  • 1418km (881mi) WSW of Bengkulu, Indonesia
  • 1439km (894mi) SW of Padang, Indonesia
  • 1442km (896mi) SW of Sungaipenuh, Indonesia

TSUNAMI SOURCE AND OBSERVATIONS [.bom.gov.au]
An undersea earthquake of magnitude 6.6 occurred at 9:11 PM EST on Saturday 14
June 2014 [2014-06-14 11:11:00UTC] near (?)  SOUTH INDIAN OCEAN (latitude 10.12S, longitude 90.91E) posing a
tsunami threat to Australia.

EQ Location Map

90east ridge quake
Source: USGS/EHP


IMPORTANT NOTICE: FIRE-EARTH EQ Forecast

The next detailed FIRE-EARTH Earthquake Forecast will be released together with Bulletin NO. 107  on Monday June 16, 2014.


 

 

Posted in earthquake 2014, earthquake forecast, Earthquake Hazard, Earthquake news, earthquake report, Global Disaster watch, Significant Event Imagery, significant events | Tagged: , , , , , , | Leave a Comment »

M6.2 Quake Strikes Off W. Coast of N. Sumatra

Posted by feww on May 18, 2014

SEISMIC HAZARD
HEIGHTENED GLOBAL SEISMICITY
SCENARIOS 07, 08
.

Significant Quake Strikes N. Sumatra Region

Centered at 4.259°N, 92.747°E, the quake struck at a signature depth of  about 10km.

EQ Details

Event Time: 2014-05-18 01:02:29 UTC
Location: 4.259°N 92.747°E depth=9.8km (6.1mi)
Nearby Cities

  • 319km (198mi) WSW of Banda Aceh, Indonesia
  • 337km (209mi) WSW of Sabang, Indonesia
  • 1000km (621mi) W of Kuala Lumpur, Malaysia

EQ Location Map

N Sumatra 18may14
Source: USGS/EHP


FIRE-EARTH EQ Forecast

The next detailed FIRE-EARTH Earthquake Forecast will be released together with Bulletin NO. 98 later today (May 18, 2014).


Related Links

Posted in Earthquake Hazard, Earthquake news, earthquake report, Global Disaster watch, Significant Event Imagery, significant events | Tagged: , , , , , , , , | Leave a Comment »

Thousands of Fires Caused by Dry Spell in Malaysia

Posted by feww on February 26, 2014

EXTREME CLIMATIC EVENTS
DRY SPELL
LARGE SWARMS OF WILDFIRES
WATER FAMINE
“STATE OF CRISIS”
.

Water rationing enforced as thousands of wildfires plague Malaysia

The state of Selangor, Malaysia’s wealthiest state, began water rationing on Tuesday as their reservoirs dipped to critically low levels.

“We pledge that every consumer will receive water, but it will be rationed to ensure supply every two days,” the state chief minister was reported as saying.

“In a week, consumers will receive water for four days.”

Meanwhile, authorities revealed more than 7,000 forest and bushfires had been reported throughout the country since early February, five times the normal.

The state of Negeri Sembilan, near the Malaysian capital of Kuala Lumpur, has already declared a “state of crisis” due to water shortage.

“In peninsular Malaysia, 15 areas have not had rainfall in more than 20 days, with some of them dry for more than a month, according to the Malaysian Meteorological Department. The dry weather is expected to run for another two weeks,” reported Reuters.

SEA 30-day precip anomalies
SE Asia 30-day precipitation anomaly (mm) for 27 Jan. – 25 Feb. 2014. Source: cpc.ncep.noaa

Singapore

The city-state of Singapore has experienced its longest dry spell on record, between January 13  and  February 8,  and has received little rain since.

Authorities say the dry weather contributed to the death of fish stocks at offshore aquaculture facilities. More than 160 tons of fish have perished recently due to a lack of oxygen in the water.

Indonesia

Governor of Riau declared a province-wide state of emergency as forest-clearing fires raged out of control due to drought.

Smog caused by record air pollution has enveloped a large region of Sumatra, forcing the pollutants standard index (PSI) to climb to a hazardous 778, and prompting authorities to close schools and urge residents to stay at home.

Forest-Clearing Fires in Indonesia

Many of the fires, started intentionally to clear the forests, have been raging since early February, engulfing forests in six provinces on Sumatra Island.

smoke rises from burning forest
Smoke rises from a burning forest in Sumatra. Credit: Antara/FB Anggoro. Image may be subject to copyright.

Satellite images showed more than 700 hotspots in Sumatra alone on February 15, nearly twice the number the previous day, with at least 600 of the blazes in Riau Province , said a report.

“We have asked the central government to help with fighting fires by sending aircraft,” said the newly-sworn-in governor of Riau.

“If it’s just helicopters, we won’t be able to cope.”

Posted in 2014 disaster diary, 2014 Disaster Forecast, Climate Change, environment, Global Disaster watch, global disasters, Global Disasters 2014, significant events | Tagged: , , , , , , , , , | Leave a Comment »

Raging Forest Fires: State of Emergency Declared in Riau, Indonesia

Posted by feww on February 26, 2014

EXTREME CLIMATIC EVENT
DROUGHT
FOREST CLEARING FIRES
STATE OF EMERGENCY
.

RIAU declares a state of emergency amid major forest fires

RIAU declared a province-wide state of emergency amid forest-clearing fires raging out of control due to drought.

Smog caused by record air pollution has enveloped a large region forcing the pollutants standard index (PSI) to climb to a hazardous 778, and prompting authorities to close schools and urge residents to stay at home.

Port officials along the Strait of Malacca, meanwhile, issued multiple warnings as visibility plunged to below 50m.

Riau Province is located in the central eastern coast of Sumatra, Indonesia’s largest island, along the Strait of Malacca.

Forest-Clearing Fires in Indonesia

Many of the fires, started intentionally to clear the forests, have been raging since early February, engulfing forests in six provinces on Sumatra Island.

smoke rises from burning forest
Smoke rises from a burning forest in Sumatra. Credit: Antara/FB Anggoro. Image may be subject to copyright.

Satellite images showed more than 700 hotspots in Sumatra alone on February 15, nearly twice the number the previous day, with at least 600 of the blazes in Riau Province , said a report.

“We have asked the central government to help with fighting fires by sending aircraft,” said the newly-sworn-in governor of Riau.

“If it’s just helicopters, we won’t be able to cope,” he added.

Posted in environment, Global Disaster watch, global disasters, News Alert, significant events | Tagged: , , , , , , | Leave a Comment »

Sinabung Eruption Leaves 14 Dead, Thousands Evacuated

Posted by feww on February 1, 2014

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.

Sinabung-01022014 -antara news
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: 2,460
m
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.

Karakatoa
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
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

Posted in volcanic hazard, volcanism, volcano, volcano alert, volcano eruprted, Volcano News, Volcano Watch | Tagged: , , , , , , , , | Leave a Comment »

Mass Evacuations as Sinabung Erupts Again

Posted by feww on January 8, 2014

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.

sinabung 7jan14
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: 2,460
m
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.

Karakatoa
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

Posted in Global Disaster watch, global disasters, Significant Event Imagery, significant events, Volcanic Activity Report, volcanic event, volcanism, volcanism report, volcano alert | Tagged: , , , , , , , | Leave a Comment »

Mass Evacuation Ordered as Mt SINABUNG Put on Red Alert

Posted by feww on November 24, 2013

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.

sinabung erupting 24nov2013
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
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: 2,460
m
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.

Karakatoa
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

Posted in Significant Event Imagery, significant events, Volcanic Activity Report, volcanic eruption, volcanic hazard, volcanism, volcano, volcano alert, Volcano News | Tagged: , , , , , , , , | Leave a Comment »

Global Disasters/ Significant Events – 29 April 2013

Posted by feww on April 29, 2013

Devastating Floods in Kentucky Wash Out Bridges, Destroy Infrastructure

Two weeks of severe flooding in eastern and southeastern Kentucky have devastated the region. Many bridges are washed out and dozens of roads and culverts in the region are severely damaged prompting Gov. Beshear to declare a state of emergency for 12 counties on Friday.

  • The 12 counties covered by the declaration are Bell, Clay, Crittenden, Harlan, Jackson, Knox, Laurel, Lee, Leslie, Owsley, Rockcastle and Whitley, said a report.

0O0

North Dakota and Minnesota

Flood Threat increases for Red and Souris Rivers in North Dakota and Minnesota: River levels on the Souris and Red Rivers in North Dakota are rising as warmer temperatures allow the snowpack to begin a more aggressive thaw. Stream and river rises will continue, along with an increased risk of overland flooding. Flood Watches and Flood Warnings are now in effect in northern North Dakota and Minnesota. —NWS

0O0

Flash floods injure 10, force about 1,000 to flee their homes in North Sumatra, Indonesia

The Aek Mata and Aek Ranto rivers in North Sumatra, Indonesia overflowed on Sunday following an extreme rain event, injuring at least 10 people, 6 of them severely, and forcing about 1,000 people to flee their homes.

  • Scores of houses were swept away by the floods, according to a report.

0O0

Bangladesh: Death toll from Dhaka building collapse nears 400

At least 385 people are now confirmed dead following Rana Plaza building collapse in Dhaka, Bangladesh, Reuters reported.

  • Hundreds of other mostly female garment workers remain unaccounted for.
  • The Bangladeshi garment industry employs up to 4 million people, most of them female, some of whom earn just over $1 a day.
  • About 60 percent of Bangladesh’s low-cost garment exports go to Europe,  23 percent to the U.S., and 5 percent to Canada.

0O0

Famine in Somalia killed 260,000 people in 2011

The 2011 famine in Somalia killed an estimated 260,000 people, half of them aged 5 and under, according to a new report, which is being made public on Thursday by FEWSNET, a Western official briefed on the report told AP.

  • The report more than doubles previous death toll estimates by the U.K. government which said between 50,000 and 100,000 people had died in the famine.

.

DISASTER CALENDARApril 29, 2013  
SYMBOLIC COUNTDOWN:
1,048 Days Left 

Mass die-offs resulting from human impact and the planetary response to the anthropogenic assault could occur by early 2016.

  • SYMBOLIC COUNTDOWN: 1,048 Days Left to ‘Worst Day’ in the brief Human  History
  • The countdown began on May 15, 2011 …

GLOBAL WARNINGS

Global Disasters: Links, Forecasts and Background

Posted in environment, Global Disaster watch, global disasters, global disasters 2013, Significant Event Imagery, significant events | Tagged: , , , , , , , , , , , | Leave a Comment »

VolcanoWatch Weekly [23 September 2009]

Posted by feww on September 24, 2009

Magnitude 6.4 EQ occurred off SW of Puerto Vallarta, Jalisco, Mexico, at a depth of 35 km, today.

FEWW Comments: The strong earthquake may have primed for eruption either one or both of two volcanoes Bárcena, which forms the island of San Benedicto, and Socorro, located on island of the same name, about 380 km to the west of the EQ location.

VOW1: Bárcena


Bárcena volcano forms the elongated island of San Benedicto, seen here from the SW in March 1955. The tuff cone with the circular summit crater at the center and the lava delta to the right were formed during an eruption in 1952-53, the only eruption known from this volcano in historical time. Pleistocene trachytic lava domes are located at the far NE tip of the island. Dark-colored lava domes from the 1952-53 eruption can be seen in the summit crater. Photo by Adrian Richards, 1955. Caption: GVP

VOW2: Socorro


Cerro Evermann, the high point of Socorro Island, rises above a Mexican Naval camp near the southern tip of the island. Socorro lies in the Revillagigedo Islands south of Baja California. Cerro Evermann is a large tephra cone and lava dome complex that forms the 1050-m-high summit of the volcano. Rhyolitic lava domes have been constructed along flank rifts, and silicic lava flows erupted from summit and flank vents have created an extremely irregular shoreline. Only minor explosive activity has occurred in historical time. Photo by Martha Marin, 1998 (Mexican Navy).
Caption: GVP

map_ of mexico_volcanoes
Bárcena  and Socorro are shown to the lower left of the map.

SI /USGS Weekly Volcanic Activity Report
(16 September – 22 September 2009)

New activity/Unrest:

News From GVP:

  • KVERT reported that although seismic activity from Kliuchevskoi did not exceed background levels during 11-18 September, weak tremor was detected. Strombolian activity that ejected tephra 70 m above the crater was seen at night on 16 and 17 September.
  • KVERT reported that during 11-18 September seismic activity from Shiveluch was above background levels. On 13 September, pyroclastic flow deposits 5 km long were seen on the S part of the lava dome.  —GVP

Ongoing Activity:

Related Links:

FEWW Volcanic Activity Forecast

Other Related Links:

Posted in Supervolcanoes, Volcanic Activity Report, VolcanoWatch, VolcanoWatch Weekly | Tagged: , , , , , , , , , , , , , | Leave a Comment »

VolcanoWatch Weekly [20 August 2009]

Posted by feww on August 22, 2009

Volcanic Activity Report: 12 August-18 August 2009

VoW: Talang

Talang
The Indonesian volcano Talang on the island of Sumatra had been dormant for centuries when, in April 2005, it suddenly rumbled to life. A plume of smoke rose 1000 meters high and nearby villages were covered in ash. Fearing a major eruption, local authorities began evacuating 40,000 people. Caption: James A. Phillips, NASA.

And just to confuse the readers a little, the following caption is by volcano.oregonstate.edu

Talang is a stratovolcano with 8 confirmed eruptions between 1833 and 1968. The volcano may have had a phreatic eruption in 1986 but the activity has not been confirmed. Most of the eruptions are moderate in size (VEI=2) and explosive. Eruptions in 1833, 1843, 1845, and 1876 were from flank vents. An eruption in 1967 and two different eruptions in 1968 were from radial fissures. The distance from the city of Padang to Talang is about 35 km. Image courtesy of the Landsat Pathfinder Project.

TALANG
Country: Indonesia
Region: Sumatra
Last Known Eruption: 2007
Summit Elevation: 2,597 m (8,520 feet)
Latitude: 0.978°S  (0°58’42″S)
Longitude:  100.679°E (100°40’46″E)
Source: GVP


Talang, which forms a twin volcano with the extinct Pasar Arbaa volcano, lies ESE of the major city of Padang and rises NW of Dibawah Lake. Talang has two crater lakes on its flanks; the largest of these is 1 x 2 km wide Danau Talang. Most historical eruptions have not occurred from the summit of the volcano, which lacks a crater. Historical eruptions from Gunung Talang volcano have mostly involved small-to-moderate explosive activity first documented in the 19th century that originated from a series of small craters in a valley on the upper NE flank. Photo by Ruska Hadian, 1986 (Volcanological Survey of Indonesia). Caption: GVP.

Authorities raise Mt. Talang alert level to highest

The vulcanology and disaster mitigation office in West Sumatra has raised the alert status for Mt. Talang to the highest level following a 6.9-magnitude earthquake and a series of aftershocks that struck the province.

Vulcanologist Dalipa Marjusi said Tuesday the tremors had sparked a volcanic earthquake and temblors, although eruption of the volcano remained undetected.

“Since Sunday’s earthquake we have recorded 1,600 volcanic quakes and 700 tectonic quakes, but only 23 of them were felt,” Dalipa said.

Fog has blanketed the summit of the 2,597-meter volcano for the last two days, making it difficult to see ash or lava that might be erupting from its crater.

The volcano last spewed hot ash last April.

A seven-strong team from the directorate general of vulcanology and disaster mitigation have arrived in Padang from Bandung to monitor the volcano’s activities.
Source: http://www.thejakartapost.com/news/2009/08/18/authorities-raise-mt-talang-alert-level-highest.html


Talang is the 6th listed volcano from top left.

New activity/unrest:

Source: Global Volcanism Program (GVP) – SI/USGS Weekly Volcanic Activity Report

Notes:

IG reported that on 4 August seismicity from Reventador increased and periods of tremor frequently saturated the seismic stations. On 6 August, incandescent blocks were ejected from the crater. Thermal images revealed a linear area of higher temperatures, confirming the presence of a new lava flow on the S flank.

Based on analyses of satellite imagery, the Washington VAAC reported that on 14 August a 2-hour-long thermal anomaly detected over Pagan was followed by a small emission. The emission, hotter than its surroundings, drifted NW and quickly dissipated. [Source: GVP]

Ongoing Activity:

Related Links:

FEWW Links:

Posted in Volcanic Activity Report, volcanism, Volcano Hazard, volcanoes, VolcanoWatch | Tagged: , , , , , , , | Leave a Comment »

Powerful Quake Strikes Seabed Off W Indonesia

Posted by feww on August 16, 2009

A powerful earthquake measuring 6.7Mw strikes off the coast of western Indonesia

The powerful earthquake, originally reported as measuring 7.0Mw, struck in the Kepulauan Mentawai Region, Indonesia, about 110 km WSW of Padang, Sumatra, Indonesia, at a depth of 44.8km on Sunday August 16, 2009, USGS reported.

The earthquake, which was later downgraded by USGS EQ Hazard Program was followed by a cluster of  aftershocks at the time of writing, the largest of which measured 5.9Mw.

[ Note: FEWW Moderators have noted that at least a dozen or so earthquakes which were initially reported as measuring 6.0 or greater, have been subsequently downgraded by USGS without any explanation.  Moderators also noted an  earthquake reported in Alaska, which measured greater than 5.0, was withdrawn from the USGS report last week, again without any explanation.]

See also FEWW comments:

http://feww.wordpress.com/2009/08/03/magnitude-6-9-quake-strikes-gulf-of-california/#comment-3772

http://feww.wordpress.com/2009/08/03/magnitude-6-9-quake-strikes-gulf-of-california/#comment-3797

According to Indonesia’s Meteorological and Geophysics Agency there was NO tsunami warning.

Several people received minor injuries as they fled building in Padang, where a small number of buildings were damage, according to reports.

Earthquake Details

  • Magnitude: 6.7
  • Date-Time
    • Sunday, August 16, 2009 at 07:38:25 UTC
    • Sunday, August 16, 2009 at 02:38:25 PM at epicenter
  • Location: 1.397°S, 99.473°E
  • Depth: 44.8 km (27.8 miles)
  • Region:  KEPULAUAN MENTAWAI REGION, INDONESIA
  • Distances
    • 110 km (70 miles) WSW of Padang, Sumatra, Indonesia
    • 305 km (190 miles) SW of Pekanbaru, Sumatra, Indonesia
    • 560 km (345 miles) SSW of KUALA LUMPUR, Malaysia
    • 960 km (600 miles) WNW of JAKARTA, Java, Indonesia
  • Location Uncertainty: horizontal +/- 5.8 km (3.6 miles); depth +/- 10.2 km (6.3 miles)
  • Parameters: NST=240, Nph=240, Dmin=683.1 km, Rmss=1.04 sec, Gp= 22°, M-type=teleseismic moment magnitude (Mw), Version=8
  • Source: USGS NEIC (WDCS-D)
  • Event ID:  us2009kjak

10-degree Map Centered at 0°N,100°E

us2009kjak
Earthquake Location Map. Source: USGS

Historic Seismicity [USGS]

Historic Seismicity
Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Seismic Hazard Map [USGS]
Seismic Hazard Map
Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Related Links:

Posted in aftershocks, Kepulauan Mentawai, Pekanbaru, seismic activity, seismic hazard report | Tagged: , , , , | 4 Comments »

Sumatra’s Mt Kerinci Erupts

Posted by feww on April 21, 2009

Sumatra’s Mt Kerinci volcano erupts at least 3 times

Mount Kerinci, the highest mountain in Sumatra, is undergoing a period of unrest, punctuated by at least three explosive eruption, spewing smoke and ash into the air.

The local volcano observation monitor also reported  repeated tremors at the base of the volcano.

Two explosive eruptions were reported Sunday and Monday, spewing smoke and ash to a height of about 400m with ash covering the tea plantations on the mountain slope and posing a threat to the populated areas below.

Another, less powerful, explosion reportedly occurred earlier today.

The head of Mount Kerinci Observation Post was reported as saying that Kerinci volcano has been showing signs of unrest in the past week.

“We have warned local people to remain cautious. We told them it’s better to wear mask when going outdoor,” he said.

One of the most active volcanoes  in Indonesia, the 3,800-meter high Mt. Kerinci, a stratovolcano,  sits on the border of Jambi and West Sumatra .

Related Links:

Kerinci

Country: Indonesia
Region: Sumatra
Volcano Type: Stratovolcano
Last Known Eruption: 2008
Summit Elevation: 3,800m  (12,467 feet)
Latitude: 1.697°S    (1°41’50″S)
Longitude: 101.264°E  (101°15’52″E)


Mount Kerinci, Sumatra, Indonesia. Photo: Tom Casadevall/USGS (1987).


The unvegetated summit of 3800-m-high Gunung Kerinci in central Sumatra, Indonesia’s highest volcano, is seen from Pengamatan on its southern flank. Kerinci is one of the most active volcanoes in Sumatra and has been the source of numerous moderate explosive eruptions since its first recorded eruption in 1838. The massive 13 x 25 km wide volcano towers 2400-3300 m above surrounding plains and is elongated in a N-S direction. Photo by Umar Rosadi, 2005 (Centre of Volcanology & Geological Hazard Mitigation, Volcanological Survey of Indonesia). Caption: GVP

FEWW Volcanic Forecast:

1. The Loyalty – New Hebrides  Arc Collision. Intense volcanic activity should be expected throughout 2009 and beyond along the New Hebrides arc, the Vanatu region (also to the north to include Solomon Island and Santa Cruz Island), possibly continued along the New Hebrides Trench (to include Matthew and Hunter Island). Volcanoes that are located in the above-described area include:

  • Savo (Solomon Island)
  • Tinakula (Santa Cruz Island – SW Pacific)
  • Suretamatai
  • Motlav
  • Gaua
  • Mere Lava
  • Aoba
  • Ambrym
  • Lopevi
  • Kuwae
  • North Vate
  • Traitor’s Head
  • Yasur
  • Eastern Gemini Seamount
  • Matthew Island
  • Hunter Island

2. Pacific Plate subduction beneath the Okhotsk Plate. Subduction of the Pacific Plate beneath the Okhotsk Plate continues to create Intense volcanism. Starting 2009, however, a much greaterthan the average number of volcanoes located on the Kuril Islands island arc, Kamchatka volcanic arc and Japan trench to the south may erupt with renewed intensity.

Related Link and FEWW previous forecasts:

Posted in Indonesia, Jambi | Tagged: , , , , | 1 Comment »

Volcano Watch: 24 February 2009

Posted by feww on February 26, 2009

Volcanic Activity Report: 18 February – 24 February 2009

Source: SI / USGS Weekly Volcanic Activity Report

New activity/unrest:

Volcano of the Week: Sibayak

Country:   Indonesia
Region:    Sumatra (Indonesia)
Volcano Type:    Stratovolcanoes
Last Known Eruption:     1881
Summit Elevation:     2212 m     7,257 feet
Latitude:     3.23°N     3°14’0″N
Longitude:     98.52°E     98°31’0″E


Sibayak volcano in NE Sumatra and its twin volcano Mt. Pinto are constructed within a compound caldera. The slightly higher Mt. Pinto partially overtops the 900-m-wide crater of Sibayak on the north. The summit contains a lava dome and an area of hydrothermal alteration visible in this photo. An ash eruption from Sibayak was recorded in 1881, and area residents note legends of eruptions. Photo by Tom Casadevall, 1987 (U.S. Geological Survey). Caption: GVP


Sibayak crater lake.
Credit: browngroove via flickr. See source for copyright information.

Ongoing Activity:

Posted in Barren Island, Karymsky, Kīlauea, Popocatépetl, Suwanose-jima | Tagged: , , , , | Leave a Comment »

 
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