Earthquakes
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Seismograph

Magnitude 7.0 earthquake strikes off Mexico coast

Richter magnitude scale
© AFP 2017/ Richter magnitude scale
A magnitude 7 earthquake took place off the coast of southern Mexico.

A magnitude 7 earthquake registered off the coast of southern Mexico at a depth of 61 miles does not present a tsunami threat, the US National Weather Service (NWS) said Wednesday.

"An earthquake with a preliminary magnitude of 7.0 occurred near the coast of Chiapas, Mexico at 0729 UTC on Wednesday June 14 2017," the NWS said.

It added, "based on all available data... there is no tsunami threat from this earthquake."

Seismograph

Shallow magnitude 6.3 earthquake strikes near İzmir, Turkey

The epicentre of the quake was located some 84 km (52 miles) northwest of the Aegean coastal province of Izmir
© US Geological SurveyThe epicentre of the quake was located some 84 km (52 miles) northwest of the Aegean coastal province of Izmir
A strong earthquake with a magnitude of 6.3 has struck near the coast of western Turkey and the Greek island of Lesbos, a European earthquake monitor said.

The epicentre of the quake was located some 84 km (52 miles) northwest of the Aegean coastal province of Izmir, the European-Mediterranean Seismological Centre (EMSC) said on its website.

The Greek island of Lesbos has also been rattled.


Comment: This quake occurred at a depth of just 10 kilometres according to Earthquake Track, although another source has it even shallower at only 5 kms.

Approximately 13 hours earlier: Shallow 6.3 magnitude earthquake hits off Indonesia's Java Island


Seismograph

Shallow 6.3 magnitude earthquake hits off Indonesia's Java Island

Java earthquake
© Google
A strong earthquake (gempa) with a preliminary magnitude of 6.3 has struck off the Indonesian island of Java, centered southwest of Jakarta, Bogor, and Bandung. Only few details were immediately available.

The earthquake, which struck at 6:15 a.m. local time on Monday, was centered about 192 kilometers (119 miles) southwest of Bogor. It struck at a depth of about 10 kilometers (6.2 miles), making it a shallow earthquake.

Indonesia's seismological agency BMKG put the preliminary magnitude at 6.3, while the U.S. Geological Survey (USGS) put the magnitude at 5.6. Many people across the western end of Java said the earthquake was strong enough to wake them up.

"Just laying on bed and shook hard enough to wake me up," one resident in Bogor told EMSC. Someone else in the city told the agency: "While at hospital, bed shock hard enough to wake me up."

Seismograph

Shallow 5.3 magnitude earthquake recorded near Kīlauea volcano, Hawaii

 Hawaii
© Hawaii Volcano Observatory
A 5.3-magnitude earthquake shook the Big Island of Hawaii on Thursday, near the Kilauea Volcano, the U.S. Geological Survey said.

There were no immediate reports of injuries or substantial damage from the quake and the Pacific Tsunami Warning Center said no tsunami was expected to result.

According to the USGS, the temblor rattled the Big Island at 7:01 a.m. local time (1601 GMT) at a depth of 8 kilometers (4.9 miles).

Comment: Earthquake Magnitude 5.3 - 18km SE of Volcano, Hawaii


Bizarro Earth

Earthquake Magnitude 5.3 - 18km SE of Volcano, Hawaii

volcano HI map
© USGS
Magnitude: 5.3

Location: 19.335°N 155.119°W

Depth: 8.0 km

Origin Date/Time: 2017-06-08 17:01:19.390 UTC

Bizarro Earth

Magnitude 5.6 earthquake strikes Ecuador-Peru border

temblor map of ecuador
This Temblor map shows recent large magnitude subduction zone earthquakes around the location of today’s M=5.6 quake. What is evident is that there have been earthquakes several hundred kilometers to the north and south of today’s event, but none in southern Ecuador. This could mean that the area has built up a significant amount of stress, which could be released in a large subduction zone earthquake, or that the geometry of the subduction zone prevents large events from happening.
At 4:34 p.m. local time, a M=5.6 earthquake struck Ecuador's southern border with Peru. While this part of South America is not heavily populated, shaking was felt in the city of Guayaquil, which is home to 3.5 million people. According to the USGS, only light shaking was felt close to the epicenter, while weak shaking was felt in Guayaquil. The USGS also estimates that damage from this quake should remain minimal, and that fatalities are unlikely. Based on reports coming in from South America, two people are reported to have been injured, and minor damage has been noted. Should more information come in, we will update this post.

Based on the reported depth from both the USGS (52 km) and the EMSC (60 km), and the thrust focal mechanism, this earthquake likely occurred on the subducting slab where the Nazca Plate slides beneath the South American. By examining the Slab 1.0 model from the USGS' Gavin Hayes (which is also visible in Temblor as 'Megathrust Zones'), the subducting slab should be between 50 and 60 km depth in the location of today's earthquake. Therefore, a minor slip event on the subduction zone is the likely cause of the quake.

Seismograph

Shallow 6.0 magnitude earthquake recorded in Balleny Islands region

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6.0 magnitude earthquake

USGS page: M 6.0 - Balleny Islands region
USGS status: Reviewed by a seismologist
Reports from the public: 0 people

2017-06-03 19:17:33 UTC 6.0 magnitude, 10 km depth
Balleny Islands

Seismograph

Magnitude 5.9 quake hits off Papua New Guinea

graph
A 5.9-magnitude earthquake hit Papua New Guinea, the United States Geological Survey (USGS) reported Saturday, adding that it was unlikely to cause mass casualties and damage.

The tremor occurred at 23:48 GMT. The epicenter of the quake was located at the depth of 190 kilometers (118 miles) and centered 91 kilometers (56.5 miles) west of Madang province.

There have been no reports of destruction or casualties caused by the earthquake so far.

No tsunami warning was issued.

Bizarro Earth

Shallow magnitude 6.8 earthquake strikes near Alaska's Aleutian Islands

Alaska Quake
© USGS
A strong earthquake with a preliminary magnitude of 6.8 has struck the Bering Sea between American and Russian islands, seismologists say. No tsunami warnings have been issued. (more)

The earthquake, which struck at 1:25 p.m. local time on Friday, was centered about 112 miles (180 kilometers) northwest of Attu Island in Alaska, or 168 miles (270 kilometers) southeast of Bering Island in Russia. It struck at a depth of about 19 miles (31 kilometers), making it a shallow earthquake.

The U.S. National Tsunami Warning Center put the preliminary magnitude of the earthquake at 6.8. "Based on earthquake information and historic tsunami records, the earthquake is not expected to generate a tsunami," the center said.

Friday's earthquake is expected to have been felt across parts of the Aleutian Islands, but damage or casualties are unlikely. The closest islands - Attu Island and Bering Island - have only a small population. Attu Island is also home to Attu Station, which was closed in 2010.

The sparsely populated region of Alaska, which sits on the so-called 'Pacific Ring of Fire', is occasionally struck by powerful earthquakes. Most notably, an enormous 9.2-magnitude earthquake struck north of Prince William Sound in Alaska on March 27, 1964, unleashing a tsunami which killed at least 143 people.

Bizarro Earth

Swarm of earthquakes rattle Bay of Plenty, New Zealand

earthquake graph image
More than 450 people felt a 'moderate' earthquake near Whakatane when it hit at 9pm yesterday. It was followed hours later with another shake in the Bay of Plenty.
More earthquakes have been felt in the Bay of Plenty. Geonet recorded four moderate quakes throughout the past 24 hours about 30km northwest of Whakatane. The last hit at 1.41am with a magnitude of 3.6 and was felt in Tauranga.

At 9.06pm yesterday a 4.2 magnitude quake struck at 10km deep. Only eight people reported feeling the early morning quake, but 454 said they felt last night's tremor. The quakes follow a 4.1 shake in the same spot at 1.35pm and another at 11.39am. Geonet recorded at least 86 "felt" reports from people describing yesterday afternoon's quake between "strong" and "light".