Posts Tagged ‘pacific ring of fire’

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7.7 Magnitude Earthquake West Coast Haida Gwaii Not The Biggest in Canada’s History

28/10/2012

A 7.7 magnitude earthquake has struck the Queen Charlotte Islands Haida Gwaii region off the west coast of Canada at around 11 pm E.S.T. and has currently (it’s now 2:01 a.m. E.S.T.) spurned on 8 aftershocks ranging from 4.3 to 5.5 magnitude.

The Queen Charlotte Islands area is already known for Canada’s largest recorded earthquake at 8.1 magnitude in 1949.  The last largest earthquake in this area was in 1970 at 7.4 magnitude.  This area is also known as Haida Gwaii and is part of the Pacific Ring of Fire.

Haida Gwaii – Beautiful

Since the epic events off the coast of Japan March 11, 2011, evidence has been mounting that the Earth is certainly moving and shaking, as the record shows that since August 15 of 2012, the Earth has seen 5 earthquake events over the magnitude of 7.0.  See 2012 USGS Significant Earthquakes http://earthquake.usgs.gov/earthquakes/eqinthenews/ But ready between the lines of the 7.0+ earthquake 2012 has seen, there are a significant amount of 6.0+ earthquakes all over.  The frequency and intensity of earthquakes has gained momentum, especially since March 11, 2011.

There has also been more earthquake activity in Canada recently as well.  Montreal, Niagara Falls and a pretty constant barrage up and down the west coast of Canada.  A whole lot of little adds up to one big.

It is not hard to predict that there will be quite a few more aftershocks in the aftermath of this 7.7 magnitude earthquake, as seen in the aftermath of Japan, let’s hope it will not affect things in any significant way and that people are safe.

At least scientists here in Canada are safe from prosecution for not predicting this earthquake ahead of time, cause they don’t really exist here anymore.

Le sigh.  Praying for family, friends and people affected by the earthquake.

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Thar She Finally Blows – Cleveland Volcano Spewing 15,000 Feet of Ash

29/12/2011

The Alaska Volcano Observatory said satellite images showed Cleveland Volcano had spewed ash 15,000 feet (4,572 meters) into the air in a cloud that moved east-southeast. U.S. Geological Survey scientist-in-charge John Power called it a small explosion.

“It’s not expected to cause a disruption to big international air carriers,” he said.

But the event drew strong interest from air carriers.

“Any time you put an ash cloud up into the atmosphere, the airlines, the air carriers, air freight companies — it’s a major concern,” Power said.

The ash cloud was significant enough to raise the alert level from yellow, representing elevated unrest, to orange, representing an increased potential of eruption, or an eruption under way with minor ash emissions or no emissions.

Cleveland Mountain is a 5,675-foot (1,729-meter) peak on uninhabited Chuginadak Island about 940 miles (1,512 kilometers) southwest of Anchorage.

Scientists in July noted increased activity in the crater at the summit of the volcano. Satellite images showed lava building and forming a dome-shaped accumulation.

Chris Waythomas of the USGS said in September that lava domes form a lid on a volcano’s “plumbing,” including the chamber holding the magma. When they grow big enough, lava domes can become unstable and will sometimes collapse. When the magma chamber decompresses it can lead to an explosion as the conduit inside the volcano suddenly becomes unsealed and gases escape.

Radar images earlier this month showed the dome had cracked and subsided, Power said.

The Federal Aviation Administration and the airline industry get concerned for trans-Pacific flights when an ash cloud has the potential to exceed the 20,000-foot (6,096-meter) threshold, as Cleveland Volcano has done in the past.

Cleveland Volcano’s last major eruption was in 2001. It has had bursts of activity nearly every year since then, and the ash cloud Thursday was not out of character.

“It’s not unexpected for a volcano like Cleveland to do things like this,” Power said. “Unfortunately, Cleveland is one of those that is so remote, we have no on-ground monitoring or instrumentation there, so it’s hard for us to pinpoint things any more accurately than we can do with satellite imagery.”

The observatory Thursday morning had no satellite images of the crater after the eruption.

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Pagan Volcano Marianas Islands Pacific – Yellow Alert Advisory

14/10/2011

OCT/14/2011 – BFE NEWS – Pagan volcano is located 173 nautical miles north of Saipan.  The island contains two stratovolcanoes connected by a narrow isthmus.  It has been reported by the USGS (see below) that there is a “persistent gas and steam plume” hence the Yellow aviation level. No other significant activity in the Mariana Islands has been noted so far. It had been reported by Volcano Live that Pagan was displaying signs of “small ash emissions” at the end of August 2011.

Pagan volcano is displaying "persistent gas & steam plumes"

The Northern Mariana Islands, officially the Commonwealth of the Northern Mariana Islands (CNMI), is a commonwealth in political union with the United States, occupying a strategic region of the western Pacific Ocean. It consists of 15 islands about three-quarters of the way from Hawaii to the Philippines. The United States Census Bureau reports the total land area of all islands as 179.01 square miles (463.63 km2).

Marianas Islands - Pacific Ocean

The Northern Mariana Islands has a population of 53,883 (2010 census).More than 90% of the population lives on the island of Saipan. Of the fourteen other islands, only two — Tinian and Rota — have a significant population. The islands of Agrihan and Alamagan have fewer than ten residents each, and the remaining islands are unpopulated.

We have been watching El Hierro (VIDEO of ERUPTION ZONE & NEWS CLICK HERE) Canary Islands Spain with its subsea eruptions like mad this past week, but it is important to note, as you will see in the video news, that a wide variety of volcanoes are active and awakening – such as in Vanatua with Tanna set now at Yellow and 3 other volcanoes set at “awakening” level. Can’t forget the 6 volcanoes in Indonesia, including Anak Krakatau.  Iceland also has been reporting much activity at Katla. Shevelich Kamchatka Russia also reported a red disturbance on Oct5/6 but this has now been downgraded to an orange.

USGS REPORT

NORTHERN MARIANA ISLANDS UPDATEFriday, October 14, 2011 11:15 AM ChST (Friday, October 14, 2011 01:15 UTC)

Report prepared by the U.S. Geological Survey.

PAGAN VOLCANO (CAVW #0804-17=)
18°7’48” N 145°48′ E, Summit Elevation 1870 ft (570 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Clear to partly cloudy satellite images showed a persistent gas and steam plume extending from Pagan Volcano throughout the past week. Except for a particularly robust plume observed in satellite imagery on October 12, the plume was similar in character to those observed the previous week. USGS has received no other reports of unrest or activity at the volcano this week.

Pagan Volcano is not monitored with ground-based geophysical instrumentation and the only sources of information are satellite observations and occasional reports from observers who pass by or visit the island. We will continue to evaluate satellite imagery, on-island, and mariner reports when they become available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.

Access to the island may be restricted by the CNMI government. Contact the EMO for the latest information.

No eruptive activity or significant unrest has been detected at other volcanoes in Northern Mariana Islands this week.

CONTACT INFORMATION:
USGS Northern Marianas Duty Scientist (808) 967-8815
http://volcano.wr.usgs.gov/cnmistatus.php

CNMI Emergency Management Office (670) 322-8001
http://www.cnmiemo.gov.mp/

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Earthquake Drill in US, New Zealand, BC Canada Could Increase Chance of Surviving ‘Big One’

23/09/2011

Shakeout, Drop, Cover & Hold-On Drills Could Increase Chances of Survival

The force of nature keeps making itself apparent. A jolt here. A tremor there. A 6.4 magnitude earthquake off Vancouver Island Sept. 9, an apocalyptic earthquake in Japan six months ago.

With shaking going on all over, more people will pay attention to the B.C. Shakeout drill this Oct. 20 at exactly 10:20 a.m.

This time, they’ll join millions of others on the U.S. West Coast and New Zealand, all part of the Ring of Fire, and take part in the Drop, Cover and Hold-On drill that will increase chances of surviving the big one.

The drill takes only a minute and offers residents, businesses and agencies the opportunity to practise the recommended safety technique of dropping down beneath a table or chair and holding on to that while the shaking is going on. Running outside or standing beneath a doorway aren’t recommended.

While it takes only minutes, people are encouraged to register for the drill by visiting http://www.shakeoutbc.ca or e-mailing info@shakeoutbc.ca.

According to the Shakeout B.C. organizing committee, B.C. has one of the most active seismic faults in the world and has about 1,200 quakes a year.

People also are encouraged to review their emergency plans and supplies should a quake hit. With possible disruption of modern conveniences, people should have water and food and supplies on hand to last a few days following the quake.

A Shake Out drill already took place in January, but the date now has been changed to October so it coincides with drills in other countries.

source: mapleridge news

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Five Indonesian Volcanoes to Keep Eye On

14/09/2011

There are 21 volcanoes having the status of above normal-active.

VIVANews Sept 14 2011 – Indonesia, situated in the Pacific Ring of Fire, has about 130 active volcanoes. Now few of them even have seismic activities.

The National Disaster Mitigation Agency (BNPB) has the data that there are 21 volcanoes whose status is above normal-active. “The five volcanoes of alert status (level III) are Mt Tambora, Mt Anak Ranakah, Mt Papandayan, Mt Karangetang and Mt Lokon,” said BNPB Head of Data Center Sutopo Purwo Nugroho, Tuesday.

He explained that the status of Mt Tambora and Mt Anak Ranakah was elevated almost in the same time, on September 8, 2011.

In addition to those of alert status, 16 volcanoes in Indonesia whose status is level II namely Soputan, Ibu, Lewotobi Perempuan, Marapi, Bromo, Dieng, Gamkonora, Merapi, Sinabung, Talang, Kerinci, Krakatau, Semeru, Sangeangapi, Gamalama and Dukuno.

The Center of Geologic Volcanology and Disaster Mitigation (PVMBG), which continued monitoring volcanoes in Indonesia, recommended the people to remain alert as the activities of the five alert-flagged volcanoes increased. “The residents and visitors are not allowed to do any activity there,” Sutopo went on.

As regards Mt Tambora, the disaster-prone zone was set two kilometers from Papandayan crater area. For Mt Lokon, the sterile zone was set three kilometers from Tompaluan crater. Meanwhile, for Mt Karangetang, hiking the peak more than 500 meters above sea level is prohibited.

“The residents of west Mini village (Kali Beha Barat) and south Kopi village (Kali Kahetang) should be more alert of the danger of hot clouds and lava flow,” said Sutopo.

He added that his party continued coordinating with the regional disaster mitigation agency (BPBD) to elevate alertness and socialize it. “The anticipation of the worst possibilities out of the volcano eruption is being prepared. The evacuation routes are ready.”

Translated by Indah Lestari

VIVA

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