wwalert

Reporting System

5.6 Magnitude EQ – South Australia

At approximately 09:25:17 UTC on Friday, March 23rd, a 5.6 magnitude earthquake based on land struck at a depth of 10.7 km (6.6 miles) in the region of the South Australia, 217 km (196 miles) SSW of Alice Springs, Australia. Coords: 10.387°S, 161.262°E … (USGS)

According to Geoscience Australia, the initial arrival was from 09:25:44 – 09:29:14 (UTC).

Geoscience has the depth at 3 km at present. Australia itself does not run over any prominent fault lines, so earthquakes further inland, like this one, are a rarity, though not unheard of.

The epicentre itself was 370 kilometres west-north-west of Oodnadatta, near the Northern Territory-South Australian border.

…(Geoscience)

March 23, 2012 Posted by | Uncategorized | , , , , , | Leave a comment

USGS reports quake near Wisconsin city plagued by booming sounds

People turn out to get their questions answered at a meeting with city officials about the mysterious booming and rumbling in Clintonville, Wis., Wednesday, March 21, 2012.

A minor earthquake occurred this week near the eastern Wisconsin city where researchers have been investigating a series of unexplained booming sounds, federal geologists said Thursday.

The U.S. Geological Survey said the 1.5-magnitude earthquake struck Tuesday just after midnight in Clintonville, a town of about 4,600 people about 40 miles west of Green Bay.

Geophysicist Paul Caruso told The Associated Press that loud booming noises have been known to accompany earthquakes. It’s possible the mysterious sounds that town officials have been investigating are linked to the quake, he said.

Earthquakes can generate seismic energy that moves through rock at thousands of miles per hour, producing a sonic boom when the waves come to the surface, Caruso said.

“To be honest, I’m skeptical that there’d be a sound report associated with such a small earthquake, but it’s possible,” he said.

Those reservations didn’t stop Clintonville City Administrator Lisa Kuss from declaring “the mystery is solved” at a news conference Thursday evening.

She said USGS representatives described the event as a swarm of several small earthquakes in a very short time.

“In other places in the United States, a 1.5 earthquake would not be felt,” she said. “But the type of rock Wisconsin has transmits seismic energy very well.”

The U.S. Geological Survey says earthquakes with magnitude of 2.0 or less aren’t commonly felt by people and are generally recorded only on local seismographs. Caruso said the Tuesday earthquake was discovered after people reported feeling something, and geologists pored through their data to determine that an earthquake did indeed strike.

Local residents have reported late-night disturbances since Sunday, including a shaking ground and loud booms that sound like thunder or fireworks.

City officials investigated and ruled out a number of human-related explanations, such as construction, traffic, military exercises and underground work.

Clintonville resident Jordan Pfeiler, 21, said she doubted an earthquake caused the noises. She said the booms she experienced were in a series over the course of several hours and not continuous as she might have expected if they were caused by an earthquake.

Still, she said, “It’s a little scary knowing Clintonville could even have earthquakes.”

Steve Dutch, a geologist at the University of Wisconsin-Green Bay, said a 1.5 magnitude earthquake produces the energy equivalent of 100 pounds of explosives and could produce loud sounds.

…(Washington Post)

March 23, 2012 Posted by | Seismic | , , , , , , , , | Leave a comment

Strongest Earthquake in 15 Years Hits SE France

The earth shook in Crévoux, 16 km northeast of Barceloneta, tonight at 11:37 p.m. accurate, according to the website of Atomic Energy Commission (CEA).

The earthquake measuring 4.9 on the Richter scale was felt in the Var, Alpes-Maritimes and even Marseille where many people have felt the tremor for 3 to 4 seconds.

Not since 1997 to find an equivalent amplitude in this mountainous region of the Hautes-Alpes.

…(La Provence)

February 27, 2012 Posted by | Seismic | , , , , , | Leave a comment

5.9 Magnitude Earthquake Rattles Taiwan

A shallow 5.9-magnitude earthquake sent people fleeing onto the streets in Taiwan’s second-largest city of Kaohsiung and led to temporary halting of rail services. No casualties were reported yesterday.

The quake struck 57 kilometers east of the southern city at 10.34am at a depth of just four kilometers, the US Geological Survey said. The Hong Kong Observatory measured the quake at a magnitude of six, while Taiwan’s Seismology Centre put it at 6.1. The National Fire Agency said there were no casualties or major material damage.

“A few Kaohsiung residents sought safety in the streets for a short while, but it wasn’t many,” a police officer said.

A spokesman for the center said it is relatively rare for a quake of such magnitude to hit the Kaohsiung area. “While the quake was strong, it didn’t last long,” Chen Jung-yu said.

“Even in some towns near the epicenter, buildings swayed for no more than seven seconds. That explained why it did not inflict damages.”

A high-speed railway linking Kaohsiung with Taipei in the north resumed about 90 minutes after the quake prompted services to be suspended. The greater metropolitan area of Kaohsiung has a population of nearly three million.

Taiwan is regularly hit by quakes as it lies near the junction of two tectonic plates.

In September 1999, a 7.6-magnitude tremor killed 2,400 people in the deadliest natural disaster in the island’s recent history.

…(The Standard)

February 27, 2012 Posted by | Seismic | , , , , , | Leave a comment

6.5 Magnitude EQ – Solomon Islands, 6.0 EQ – Near the East Coast of Honshu

At approximately 08:19:58 UTC on Tuesday, February 14th, a 6.5 magnitude earthquake based on water struck at a depth of 54.7 km (34.0 miles) in the region of the Solomon Islands, 72 km (44 miles) W of Kira Kira, Solomon Islands. Coords: 10.387°S, 161.262°E

…(USGS)

As well, a 6.0 Magnitude EQ struck near the East Coast of Honshu at 06:21:58, 93 km (57 miles) ESE of Mito, Honshu, Japan, at a depth of 10km (6.2 miles)… (USGS)

A powerful earthquake rocked eastern Japan Tuesday, but no tsunami warning was issued and no damage was reported at the crippled Fukushima nuclear plant.

The US Geological Survey said the 6.0 magnitude quake, with an epicentre 10 kilometres (six miles) deep, was centred 166 kilometres east-northeast of Tokyo, where correspondents said buildings swayed.

Japan’s meteorological agency also located the quake off the coast of Ibaraki prefecture, south of the stricken plant. A very small change of tidal level was forecast but was not expected to cause any damage. Nuclear plant operator Tokyo Electric Power Co. (TEPCO) said the stricken Fukushima Daiichi plant remained stable.

…(Vancouver Sun)

February 14, 2012 Posted by | Seismic | , , , , , , , , | Leave a comment

6.3 Magnitude EQ – Near the Coast of Central Peru

At approximately 05:11:01 UTC on Monday, January 30th, an earthquake based on land struck at a depth of 39.2 km (24.4 miles) off the coast of Central Peru, 15 km (9 miles) SE of Ica, Peru, and 96 km (59 miles) SSE of Chincha Alta, Peru. Coords: 14.179°S, 75.644°W

United States Geological Survey – The event has been reviewed by a seismologist and confirmed, at present, to be a 6.3 magnitude earthquake at a depth of 39.2 km (24.4 miles). The European Mediterranean Seismology Agency is in agreeance with the earthquake parameters provided by the USGS.

…(USGS) (EMSC)

The quake occurred shortly after midnight local time (1 a.m. ET) and was centered about 9 miles southeast of the city of Ica and about 170 miles south-southeast of Lima.

Witnesses said the quake shook buildings in coastal Lima, Peru’s capital. Although there were no reported injuries or damage, local radio said residents near the epicenter were alarmed and ran outside their homes when they felt the quake. Power was out in nearby Pisco, the radio said.

“We felt a terrible earthquake that’s really scared us,” Ica resident Blanca Cabanilla told the local radio. “It was similar to what happened to us in 2007.”

An 8.0 quake in 2007 killed more than 500 people in Ica and wrecked thousands of homes.
…(Reuters)

January 31, 2012 Posted by | Seismic | , , , , , | Leave a comment

Haiti Could Be in a New Earthquake Cycle, Scientists Say

The magnitude-7.0 earthquake that shook Port-au-Prince, Haiti, two years ago nearly demolished the city and took both residents and geologists by surprise.

Now, a team of scientists thinks they’ve identified a centuries-long pattern of earthquakes on the island of Hispaniola, which comprises both Haiti and the Dominican Republic, that could portend earthquakes to come.

Although past seismic activity can’t be used to predict future quakes, the findings may help residents and those hoping to rebuild Port-au-Prince prepare for the next big one, said William Bakun, a geologist with the U.S. Geological Survey in Menlo Park, Calif.

“People shouldn’t be surprised if, in the decades to come, there are more very damaging earthquakes in the region,” Bakun told OurAmazingPlanet, “and they should plan and build accordingly.”

A very detailed record
Bakun and his colleagues gathered historical records — letters, drawings, newspaper clippings and more — from residents of Hispaniola since the time that Christopher Columbus dropped anchor at the island. From descriptions of shaking and damage, Bakun was able to estimate the intensities, magnitudes and locations of historical earthquakes.

“It was in the interests of the Spanish colonies to report all damage back to the king,” Bakun explained, “because he was in the habit of supplying them funds to rebuild critical facilities, cathedrals and the like. So there are actually very detailed records of Hispaniola’s earthquakes.”

…(MSNBC)

January 28, 2012 Posted by | Seismic | , , , , , , | 1 Comment

6.6 Magnitude EQ – Santa Cruz Islands

At approximately 04:07:17 UTC on Monday, January 9th, an earthquake based on water struck at a depth of 38.2km (24.2 miles) in the Santa Cruz Islands region, 75 km (46 miles) WNW of Lata, Santa Cruz Islands, Solomon Is, and 355 km (220 miles) E of Kira Kira, San Cristobal, Solomon Isl. Coords: 10.557°S, 165.160°E.

United States Geological Survey – The event has been reviewed by a seismologist and confirmed as a 6.6 magnitude earthquake at a depth of 24.2 miles. The European Mediterranean Seismology Agency (EMSC) is in agreeance.

…(USGS)

According to the Pacific Tsunami Warning Center there is no warning issued for a tsunami from this 6.6 magnitude earthquake.

…(PTWC)

January 9, 2012 Posted by | Seismic | , , , , | Leave a comment

Earthquake Rattles the Entire Dominican Republic

A moderate tremor of 5.3 magnitude has rattled the entire Dominican Republic, at around 5:32am local time, whose epicenter was located 17 kilometers south-southeast of the city of San Jose de Ocoa, at a depth of 10 kilometers. The tremor shook doors and windows for around 30 seconds, startling people to scurry out of bed. Emergency Operations Center director Juan M. Mendez said there are no reports of damages or injuries thus far, although cracks in structures have been reported in the country’s south region.

Jose Mateo, on the phone from the town of Fundacion, in the southern city of Bani, said his house under construction “has some cracks,” with no major damages.

The geologist Osiris de Leon said since the tremor’s epicenter was inland, no tsunami warnings were issued. Interviewed by the program El Dia on Channel 11, the expert said the tremor was also felt in Haiti, where a 7.5 magnitude earthquake devastated Port-au-Prince on January 12, 2010.

…(Dominican Today) (USGS)

January 6, 2012 Posted by | Seismic | , , , , | Leave a comment

Southern Egypt hit by first major tremor in several decades

December 27, 2011 – According to the National Institute of Astronomical and Geophysical Research, tremors were reported on Monday evening near Lake Nasser, south of Aswan. The population of the High Dam city barely noticed the quake, however, the tremors were felt by people in the desert regions, several tens of kilometers south of Aswan. According to scientists, the epicenter was located at a depth of two kilometers. This area was once considered a seismically hazardous area, but over the last few decades there had not been a single tremor.

The largest earthquake was said to be measured at a magnitude of 4.2.

…(English.ru)

December 27, 2011 Posted by | Seismic | , , , , | Leave a comment

   

Follow

Get every new post delivered to your Inbox.