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Sun, 19 Aug 2018
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Earthquakes


Seismograph

Magnitude 8.2 earthquake hits Pacific near Fiji

earthquake fiji
© National Geographic
A powerful magnitude 7.9 quake has struck in the Pacific Ocean, 291 km (180 miles) from Ndoi island of Fiji, according to the United States Geological Survey (USGS). The quake hit at a depth of 570km (354 miles), too deep to cause a tsunami. Its power approaches the strongest deep-focus (over 300km deep) quake on record, the magnitude 8.3 Okhotsk Sea quake of 2013.

Seismograph

Strong and shallow M6.1 earthquake strikes Costa Rica

earthquake costa rica M6.1 August 18 2018
A strong and shallow earthquake registered by the USGS as M6.1 hit Costa Rica at 23:22 UTC (17:22 local time) on August 17, 2018. The agency is reporting a depth of 15.9 km (9.8 miles). EMSC is reporting M6.1 at a depth of 44 km (27.3 miles). This earthquake can have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

The epicenter was located 18.4 km (11.5 miles) W of San Vito (population 3 981), 47.2 km (29.3 miles) SSE of Buenos Aires (population 11 680), Costa Rica and 54.8 km (34.1 miles) W of Volcan (population 10 286), Panama.

There are about 880 000 people living within 100 km (62 miles) and 4 700 within 10 km.

Some 25 000 people are estimated to have felt strong shaking, 165 000 moderate, 2 052 000 light and 12 661 000 weak.

The USGS issued a green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.

Comment: Below are some of the most notable quakes in just the last two weeks or so; Alaska has seen its strongest quake ever recorded, there have been many quakes reaching magnitude 6, and in diverse locations, and there have been earthquake swarms - our planet really is rocking and rolling: Also check out SOTTs monthly documentary: SOTT Earth Changes Summary - July 2018: Extreme Weather, Planetary Upheaval, Meteor Fireballs


Seismograph

Deep M6.6 earthquake hits north-east of Raba, Indonesia

Earthquake strikes north east of Raba, Indonesia
© USGS
Earthquake strikes north east of Raba, Indonesia on Friday (Aug 17).
A relatively deep offshore earthquake struck the Indonesian archipelago late on Friday (Aug 17), according to data from the US Geological Survey.

The magnitude-6.6 quake was located 153km north-east of Raba at a depth of 564.7km, the USGS said.

Indonesia's Meteorology, Climatology and Geophysics Agency (BMKG) said in a tweet there was no tsunami risk.

Netizens took to social media to share news about the earthquake, with some saying they had felt it in Bali, about 580 km from Raba.

The epicentre of Friday's quake was around 500km from the island of Lombok, where two deadly tremors - and dozens of aftershocks - wreaked widespread damage earlier in the month.


A magnitude-6.2 earthquake rocked Lombok on Aug 9, sparking panic after a powerful earthquake just four days earlier.

Indonesia sees frequent earthquakes as it is situated on the Pacific Ring of Fire.

Seismograph

Very shallow M6.4 earthquake hits Ogasawara region, Japan - preceded by another mag 6 just a minute earlier

Japan earthquake
Off the coast of the Japanese island of Iwo Jima, an earthquake of magnitude 6.4 on the Richter scale.

Strong fluctuations recorded in the U.S. geological survey (USGS).

According to the report on their website, the epicenter of the earthquake was located at a depth of 11 kilometres, approximately 420 kilometres South-East of the village of Ogasawara.

According to preliminary data, victims and destructions, these tremors did not cause. Tsunami threat to local services is also not announced.

In notifications about emergencies that send Google, specified, in addition to Japan, the tremors could also be felt in the territory of the Northern Mariana Islands in the Pacific ocean.

Comment: From Earthquake Track:
6.0 magnitude earthquake
about 19 hours ago
UTC time: Thursday, August 16, 2018 18:21 PM
Your time: Thursday, August 16 2018 7:21 PM
Magnitude Type: mb
USGS page: M 6.0 - 263km SE of Iwo Jima, Japan
USGS status: Reviewed by a seismologist
Reports from the public: 0 people
A minute later came the larger quake:
6.4 magnitude earthquake
about 18 hours ago
UTC time: Thursday, August 16, 2018 18:22 PM
Your time: Thursday, August 16 2018 7:22 PM
Magnitude Type: mww
USGS page: M 6.4 - 252km SE of Iwo Jima, Japan
USGS status: Reviewed by a seismologist
Reports from the public: 0 people



Seismograph

Magnitude 6.6 earthquake strikes near Tanaga Volcano, Alaska

Earthquake seismograph
The United States Geological Survey reports a preliminary magnitude 6.6 earthquake struck near Tanaga Volcano, Alaska on Wednesday.

The quake hit at 11:56 AM local time at a depth of 20 kilometers.

There was no initial word on damage or injury resulting from the quake. More information on this earthquake is available on the USGS event page.

See the latest USGS quake alerts, report feeling earthquake activity and tour interactive fault maps in the earthquake section.

Comment: Adapt 2030 Ice Age Report: Are the New Madrid and Alaskan fault zones waking?


Seismograph

Shallow M4.4 earthquake felt across Southern California

California quake August 2018 13th
A 4.4 magnitude earthquake caught Californians off-guard after it hit an area southeast of Los Angeles on Aug. 14, according to the U.S. Geological Survey (USGS).

The small quake, which occurred at about 5:24 p.m. local time, was centered 4.3 miles north-east from Aguanga in Riverside County and was felt by residents up to 50 miles away. No damage or injuries have been reported.

Some locals took to social media to share their experiences.

Comment: More details of the quake:
M 4.4 - 7km NE of Aguanga, CA 2018-08-15 01:24:26 UTC 33.477°N 116.803°W 1.9 km depth
Other recent quakes of note in the last week or so: See also: Adapt 2030 Ice Age Report: Are the New Madrid and Alaskan fault zones waking?


Seismograph

Adapt 2030 Ice Age Report: Are the New Madrid and Alaskan fault zones waking?

A 6.4-magnitude earthquake hit Alaska on Aug. 12, 2018
© USGS
A 6.4-magnitude earthquake and dozens of other earthquakes shook Alaska on Aug. 12, 2018.
Strongest ever earthquake hits Alaska's North Slope region, but at the same time a quake in the center of the New Madrid Seismic Zone occurs signalling an awakening of fault zones globally. Additionally in the Arctic Basin near Svalbard and in the Arctic Circle unusual quakes that experts are baffled to explain. The Grand Solar Minimum, this uptick in global tectonic activity was forecast.


Comment: See also:


Seismograph

Strong shallow mag. 6.2 earthquake in the South Sandwich Islands region

location
Date & time: Tue, 14 Aug 03:29:49 UTC - 12 hours ago

Magnitude: 6.2

Depth: 10.0 km

Epicenter latitude / longitude: 58.14°S / 25.16°W [Map]

Nearest volcano: Montagu Island (75 km)

Primary data source: GFZ

Attention

Another shallow magnitude 6 earthquake hits Alaska - 2nd in under 24 hours

quake
6.0 magnitude earthquake 172 km from Prudhoe Bay, Alaska, United States

USGS page: M 6.0 - 65km SSW of Kaktovik, Alaska

USGS status: Reviewed by a seismologist

Reports from the public: 17 people

6.0 magnitude, 11 km depth

Comment: This latest quake comes less than 24 hours after a magnitude 6.4 event struck the same area - the strongest ever to hit the region:
Alaska's North Slope was hit Sunday by the most powerful earthquake ever recorded in the region, the state's seismologist says. At 6:58am Sunday, the magnitude 6.4 earthquake struck an area 42 miles east of Kavik River Camp and 343 miles northeast of Fairbanks, the state's second-biggest city, the AP reports. The US Geological Survey says the earthquake had a depth of about 6 miles. State seismologist Mike West tells the Anchorage Daily News that the earthquake was the biggest recorded in the North Slope by a substantial amount. "This is a very significant event that will take us some time to understand," he says.

The previous most powerful quake in the North Slope was in 1995 at magnitude 5.2, West says. The jump from a 5.2 to Sunday's 6.4 is significant because earthquakes rapidly grow in strength as magnitude rises, he says. A magnitude 6.4 earthquake is 15.8 times bigger and 63.1 times stronger than a 5.2 earthquake, according to the US Geological Survey. "That's why at 6.4 this changes how we think about the region," West says "It's a little early to say how, but it's safe to say this earthquake will cause a re-evaluation of the seismic potential of that area." Later Sunday, another magnitude 6.1 earthquake hit at 1:15pm near the city of Kaktovik on Alaska's North Slope, the US Geological Survey says.



Seismograph

Deadly earthquake lifts Indonesian island by nearly a foot

Earthquake Lombok Indonesia
© Associated Press/Fauzy Chaniago
Motorists ride past buildings ruined by Sunday's earthquake in Pamenang, Lombok Island, Indonesia, Friday, Aug. 10, 2018. The north of the popular resort island has been devastated by Sunday's earthquake, damaging thousands of buildings and killing a large number of people.
Scientists say the powerful Indonesian earthquake that killed nearly 400 people lifted the island it struck by as much as 25 centimeters (10 inches).

The National Disaster Mitigation Agency said on Saturday that 387 people died, jumping from the 321 it reported the previous day, as search and rescue teams continued to sift through the rubble and people already buried by relatives are accounted for.

Using satellite images of Lombok from the days following the Aug. 5 quake, scientists from NASA and the California Institute of Technology's joint rapid imaging project made a ground deformation map and measured changes in the island's surface.

In the northwest of the island near the epicenter, the rupturing faultline lifted the earth by a quarter of a meter. In other places it dropped by 5-15 centimeters (2-6 inches).