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Tue, 20 Apr 2021
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Earthquakes


Seismograph

Taiwan struck by M6.2 and M5.8 earthquakes three minutes apart

Keoni Everington
Taiwan News
Sun, 18 Apr 2021 14:16 UTC
Taiwan earthquakes

Taiwan map showing M6.2 earthquake
East Taiwan was struck by magnitude 6.2 and 5.8 earthquakes three minutes apart on Sunday evening (April 18), according to the Central Weather Bureau (CWB).

The first earthquake, a magnitude 5.8, struck at 10:11 p.m. and was 19.2 kilometers southwest of Hualien County Hall, at a shallow focal depth of 15 kilometers. Taiwan uses an intensity scale of one to seven that gauges the degree to which a quake is felt at a specific location.

The quake's intensity registered as a five in Hualien County, a four in Nantou County, Yilan County, and Changhua County, and a three in Taichung County, Yunlin County, Chiayi County, Miaoli County, and New Taipei City, An intensity level of two was recorded in Taoyuan County, Hsinchu County, Kaohsiung City, Hsinchu City, Chiayi City, Taipei City, Tainan City, and Pingtung County, while a lesser intensity of one was felt in Keelung City and Penghu County.

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Attention

Hawaii: 34 earthquakes rattle world's largest active volcano, raising fears of eruption

Oliver O'Connell
The Independent
Tue, 13 Apr 2021 07:15 UTC
A lava flow map of Mauna Loa on Hawaii’s Big Island
© USGS
A lava flow map of Mauna Loa on Hawaii’s Big Island prepared by the US Geological Survey
Mauna Loa, the world's largest active volcano, covering half of the Big Island of Hawaii, was ratted by 34 small earthquakes on Sunday.

Though only registering small magnitudes, scientists have warned citizens that the mounting seismic activity could signal that an eruption may be possible in the near future.

There have been 155 earthquakes greater than 1.5 on the Richter scale in the past seven days, and 740 in the past month, including a 4.3 on 3 April.

Sunday's largest tremor was a 3.2 magnitude quake that struck Pahala, south of the summit of Mauna Loa at 8.08pm local time. A 3.0 tremor also struck in the afternoon.

In March, the US Geological Survey said that as the volcano continues to awaken from its slumber, it would be a good time for people to revisit their personal emergency plans in the event of an eruption.
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Seismograph

Significant 6.0 earthquake hits off East Java, Indonesia - 8 dead, dozens hurt (UPDATE)


Volcano Discovery
Sat, 10 Apr 2021 10:37 UTC
Pieces of roof tiles and other debris litter the ground at a school following an earthquake in Malang, East Java, Indonesia, April 10, 2021.
© AP
Pieces of roof tiles and other debris litter the ground at a school following an earthquake in Malang, East Java, Indonesia, April 10, 2021.
An intermediate magnitude 6.0 earthquake was reported early afternoon near Blitar, East Java, Indonesia.

According to the German Research Centre for Geosciences (GFZ), the quake hit on Saturday 10 April 2021 at 2:00 pm local time at an intermediate depth of 87 km.

The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.

Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 5.9.

Comment: Update: April 11, report by AP:
8 Dead, Dozens Hurt as Indonesia Quake Shakes East Java

A strong earthquake on Indonesia's main island of Java killed eight people, including a woman whose motorcycle was hit by falling rocks, and damaged more than 1,300 buildings, officials said Sunday. It did not trigger a tsunami.

The U.S. Geological Survey said the magnitude 6.0 quake struck off the island's southern coast at 2 p.m. Saturday. It was centered 45 kilometers south of Sumberpucung town of Malang District in East Java province, at a depth of 82 kilometers.

Rahmat Triyono, the head of Indonesia's earthquake and tsunami center, said the undersea tremblor did not have the potential to cause a tsunami. Still, he urged people to stay away from slopes of soil or rocks that have the potential for landslides.

This was the second deadly disaster to hit Indonesia this week, after Tropical Cyclone Seroja caused a severe downpour Sunday that killed at least 174 people and left 48 still missing in East Nusa Tenggara province. Some victims were buried in either mudslides or solidified lava from a volcanic eruption in November, while others were swept away by flash floods. Thousands of homes with damaged.

Saturday's quake caused falling rocks to kill a woman on a motorcycle and badly injured her husband in East Java's Lumajang district, said Raditya Jati, spokesperson for the National Disaster Mitigation Agency.

He said about 1,189 homes and 150 public facilities, including schools, hospitals and government offices, were damaged. Rescuers retrieved four bodies from the rubble in Lumajang's Kali Uling village. Three people were also confirmed killed by the quake in Malang district.

Television reports showed people running in panic from malls and buildings in several cities in East Java province.


Indonesia, a vast archipelago of 270 million people, is frequently struck by earthquakes, volcanic eruptions and tsunamis because of its location on the "Ring of Fire," an arc of volcanoes and fault lines in the Pacific Basin.

In January, a magnitude 6.2 earthquake killed at least 105 people and injured nearly 6,500, while more than 92,000 were displaced, after striking Mamuju and Majene districts in West Sulawesi province.


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Seismograph

Shallow 6.0-magnitude earthquake strikes off Papua New Guinea - 3rd major quake within 5 hours


Xinhua
Sat, 10 Apr 2021 14:21 UTC
quake
An earthquake with a magnitude of 6.0 jolted 195 km N of Madang, Papua New Guinea, at 1138 GMT on Saturday, the U.S. Geological Survey (USGS) said.

The epicenter, with a depth of 10.0 km, was initially determined to be at 3.4527 degrees south latitude and 145.7212 degrees east longitude.

Comment: Details of the other two: 6.1-magnitude earthquake hits off Sarangani, Philippines

Significant 6.0 earthquake hits off East Java, Indonesia

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Seismograph

6.1-magnitude earthquake hits off Sarangani, Philippines


Xinhua
Sat, 10 Apr 2021 10:44 UTC
quake
An earthquake with a magnitude of 6.1 jolted 168 km SSW of Sarangani, Philippines at 09:30:44 GMT on Saturday, the U.S. Geological Survey said.

The epicenter, with a depth of 311.31 km, was initially determined to be at 4.1069 degrees north latitude and 124.6681 degrees east longitude.
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Seismograph

Shallow 6.0-magnitude earthquake hits Kermadec Islands


China.org.cn
Wed, 07 Apr 2021 18:10 UTC
quake
An earthquake with a magnitude of 6.0 jolted Kermadec Islands region at 09:53:28 GMT on Wednesday, the U.S. Geological Survey (USGS) said.

The epicenter, with a depth of 10.0 km, was initially determined to be at 29.1007 degrees south latitude and 176.6725 degrees west longitude.
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Seismograph

4.0-Magnitude earthquake rattles Los Angeles: Epicenter near airport

Lawrence Yee
Yahoo! News
Mon, 05 Apr 2021 16:16 UTC
Los Angeles Airport

A 4.0-magnitude earthquake rattled Los Angeles early Monday morning centered in Lennox, a city two miles East of Los Angeles International Airport.

The 4.0 tumbler struck at 4:45 a.m. PT, though the robotic LA Quakebot earlier registered a 3.0-magnitude earthquake in the area at 4:18 a.m. and a 2.5-magnitude earthquake at 4:19 a.m. There have been no reports of major damage or injuries. LAX continues to operate as normal.
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Seismograph

6.0-magnitude earthquake hits New Zealand's Gisborne


The Siasat Daily
Mon, 05 Apr 2021 11:19 UTC
quake
An earthquake of magnitude 6.0 on the Richter scale jolted Gisborne city of New Zeland on Monday, the United States Geological Survey said.

The epicentre, with a depth of 10.0 km, was initially determined to be at 37.5205 degrees south latitude and 179.6745 degrees east longitude.

No casualties have been reported yet. On March 4, a powerful earthquake of magnitude 6.9 on the Richter Scale jolted Gisborne, New Zealand.

In 2011, a magnitude 6.3 quake hit the city of Christchurch, killing 185 people and destroying much of its downtown.
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Seismograph

Shallow M6.6 earthquake hits east of South Sandwich Islands

Kirill Kurevlev
Sputnik News
Fri, 02 Apr 2021 23:27 UTC
South Sandwich Islands
© CC BY 2.0 / Flickr / Rob Oo
The earthquake was recorded at about 1:16 UTC. The epicentre of the tremor was located east of the islands. The focus lay at a depth of 10 kilometres.

A 6.6-magnitude earthquake has struck east of the South Sandwich Islands in the South Atlantic Ocean, according to the United States Geological Survey (USGS).
There have been no reports of injuries or damage as a result of the earthquake, as no people live on the South Sandwich Islands. No tsunami alert has been declared, the US National Tsunami Warning Centre stated.
The earthquake's epicentre was more than 1,810 kilometres from King Edward Point, a research station on South Georgia Island and is the capital of the British Overseas Territory of South Georgia and the South Sandwich Islands, according to the Indian National Centre for Seismology.
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Seismograph

6.0-magnitude earthquake hits Fiji region - 2nd major quake in that area of the Pacific Ocean in 5 hours


Xinhua
Thu, 01 Apr 2021 16:37 UTC
graph
An earthquake with a magnitude of 6.0 jolted Fiji region at 15:11:18 GMT on Thursday, the U.S. Geological Survey (USGS) said.

The epicenter, with a depth of 597.77 km, was initially determined to be at 21.8731 degrees south latitude and 179.3414 degrees west longitude.

Comment: In the same region of the Pacific Ocean and a little over 5 hours earlier a huge 6.6 magnitude earthquake struck just off the Kermadec Islands.

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