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Earthquakes

Bizarro Earth

Hidden Napa earthquake faults found by NASA radar

Becky Oskin
Live Science
Thu, 11 Sep 2014 16:17 UTC
Napa Fault Lines
© NASA/JPL-Caltech/ASI/Google Earth
Ground deformation from the Aug. 24 earthquake in Napa, California. Each color fringe corresponds to deformation of 4.7 inches (12 centimeters).
The Aug. 24 Napa earthquake woke several small, previously unrecognized Napa Valley faults, according to the first results from a high-flying NASA radar instrument.

The magnitude-6.0 Napa earthquake, the biggest to shake northern California in 25 years, injured 170 people and killed one woman, who died from brain bleeding caused by a falling television. Some 800 homes were damaged, and 103 have been deemed too dangerous to enter.

Most of the damage was centered on the West Napa Fault. The U.S. Geological Survey (USGS) found that the West Napa Fault moved a total of 18 inches (46 centimeters) along a 9.3-mile-long (15 kilometers) length, USGS scientist Dan Ponti said Sept. 4 at a USGS earthquake seminar.
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Bizarro Earth

USGS: Earthquake Magnitude 6.2 - 122km SE of Modayag, Indonesia


US Geological Survey
Tue, 09 Sep 2014 22:19 UTC
Modayag Quake_100914
© USGS
Event Time
2014-09-10 02:46:06 UTC
2014-09-10 10:46:06 UTC+08:00 at epicenter

Location
0.143°S 125.092°E depth=20.5km (12.8mi)

Nearby Cities
122km (76mi) SE of Modayag, Indonesia
161km (100mi) S of Tondano, Indonesia
165km (103mi) S of Tomohon, Indonesia
175km (109mi) S of Bitung, Indonesia
932km (579mi) N of Dili, East Timor

Scientific Data
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Attention

Napa earthquake's bizarre side effect: Creeks flowing again as groundwater rises

Sean Breslin
Weather.com
Mon, 08 Sep 2014 17:01 UTC
Wild Horse Creek
© Michael Macor, The Chronicle
Wild Horse Creek which flows through Green Valley in Fairfield, Calif., suddenly flowing with water after the August 24, 2014 Napa earthquake.
When the ground stopped shaking after a 6.0-magnitude earthquake last month in Napa, California, something really surprising happened next.

Local residents noticed that some creeks, which had previously run dry due to the state's prolonged drought, were filled with water again.

The strange phenomenon occurred in Solano County's Green Valley, according to SFGate.com, and it's believed it was caused by groundwater that was forced up to the surface when the Earth jolted.

At first, water running through the drought area may seem like a good thing, but that may not be the case this time.
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Alarm Clock

USGS: Earthquake Magnitude 6.1 - Easter Island region


U.S. Geological Survey
Sat, 06 Sep 2014 02:52 UTC
Earthquake 6.1 Easter Islands
© USGS
Event Time
2014-09-06 06:53:13 UTC
2014-09-05 22:53:13 UTC-08:00 at epicenter

Location
26.625°S 114.456°W depth=10.0km (6.2mi)

Nearby Cities
502km (312mi) W of Hanga Roa, Chile
3736km (2321mi) ESE of Papao, French Polynesia
3740km (2324mi) ESE of Mahina, French Polynesia
3742km (2325mi) ESE of Paea, French Polynesia
1576km (979mi) E of Adamstown, Pitcairn

Scientific data
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Attention

At least 10 volcanic quakes recorded at Taal, Mayon

Joel Locsin
GMA News
Mon, 01 Sep 2014 02:55 UTC
Image
© Unknown
Classified as a stratovolcano (a volcano made up of layers of lava alternating with cinder and ash) Mount Mayon or Mayon Volcano is very much active and is located in the in the Bicol Region, in the province of Albay, on Luzon Island, Philippines.
At least 10 volcanic quakes were recorded at two restive volcanoes in Luzon - Taal Volcano in Batangas and Mayon Volcano in Albay - over the last 24 hours, the National Disaster Risk Reduction and Management council said Monday.

Citing data from the Philippine Institute of Volcanology and Seismology, the NDRRMC said seven volcanic quakes were recorded at Taal, and three at Mayon.

While the NDRRMC said there was no sign yet of an imminent eruption, it reminded residents near the two volcanoes to stay away from the permanent danger zones.

The NDRRMC said Alert Level 1 remained at Taal as of 8 a.m. It reminded the public to stay away from the main crater due to the danger of sudden steam explosions and high concentrations of toxic gases.
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Bizarro Earth

USGS: Earthquake Magnitude 6.0 - 175km E of 'Ohonua, Tonga


US Geological Survey
Thu, 04 Sep 2014 01:21 UTC
Tonga Quake_040914
© USGS
Event Time
2014-09-04 05:33:46 UTC
2014-09-03 17:33:46 UTC-12:00 at epicenter

Location
21.396°S 173.258°W depth=11.8km (7.4mi)

Nearby Cities
175km (109mi) E of 'Ohonua, Tonga
203km (126mi) E of Nuku'alofa, Tonga
826km (513mi) SSW of Tafuna, American Samoa
833km (518mi) SSW of Pago Pago, American Samoa
851km (529mi) S of Apia, Samoa

Scientific Data
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Map

5.6 quake shakes southern Greece

Anastasios Papapostolou
Greek Reporter
Fri, 29 Aug 2014 05:34 UTC
S greece quake
An earthquake with magnitude 5.6 occurred between the Peloponesse and the Cyclades in Greece at 6:44 am on Aug 28, 2014.

The epicenter was located beneath the seabed about 140 kilometers (86 miles) south of Athens and near the island of Milos.

There have been no reports of injuries or damages, however, the shock was widely felt in Athens and Crete.

The U.S. Geological Survey gave a preliminary magnitude of 5.6, while the Greek Institute of Geodynamicsr gave it as 5.7.

Comment: With the increase in volcanic and seismic activity around the world, this one is too close for comfort to the volcano of Thera (modern day Santorini).

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Blue Planet

Some San Francisco bay area residents report mysterious flashes in the sky during Napa quake

Betty Yu
KPIX 5
Wed, 27 Aug 2014 00:11 UTC

Several people called the KPIX 5 newsroom after Sunday morning's magnitude 6.0 earthquake in Napa, reporting mysterious flashes of light in the sky. Witnesses said the strange phenomenon looked like lightning.

Similar flashes of light have been reported in earthquakes around the world, from Japan to Peru.

Friedemann Freund, a scientist with the SETI Institute in Mountain View, said the same thing happened during Sunday morning's earthquake. And it wasn't a transformer blowing up or UFOs.

"What they are, are a consequence of the stresses building up deep below the earth, seven miles like in the case of the Napa Valley earthquake," Freund told KPIX 5.

He calls the phenomenon "earthquake lights," the quick buildup of stress that causes an electric current to flow to the surface and burst through the earth. This typically happens before or during an earthquake.
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Attention

Sub-glacial eruption of Iceland's Bardarbunga volcano forms deep 'cauldrons' of melted ice


RT
Thu, 28 Aug 2014 03:46 UTC
Icelandic volcano activity increased on Wednesday, with scientists detecting 10-15 meters deep cauldrons of melted ice at the Vatnajökull glacier, prompting fears of an imminent eruption.
Image
© Reuters / Sigtryggur Johannsson


A warning sign blocks the road to Bardarbunga volcano, some 20 kilometres (12.5 miles) away, in the north-west region of the Vatnajokull glacier August 19, 2014.
Icelandic scientists have detected a series of 10-15m deep cauldrons at Bardarbunga volcano glacier. They apparently are a result of melting following a sub-glacial eruption, the Icelandic Civil Protection Scientific Advisory Board reported. A surveillance flight over the surface of Vatnajokull has shown the cauldrons to be 1 km wide, located in a straight line some 4-6 kilometers south of the Bardarbunga caldera.
The 10-15 m deep cauldrons, 1 km wide, south of the #Bárðarbunga caldera. Picture by https://t.co/ZiKocZlLJSpic.twitter.com/lSLWDJZnEO
- Almannavarnir (@almannavarnir) August 28, 2014
"The cauldrons have been formed as a result of melting, possibly a sub-glacial eruption, uncertain when," country's Meteorological Office said, pointing out that the data is still being analyzed.

"During the night (Wednesday) we have had three larger events, two of them in the Bardarbunga caldera. Those were 5.2 and 5.3, and very similar to the events that we have seen there before," Palmi Erlendsson, a geologist at the Met Office told the country's RTE news.

At the same time, scientists have registered more than 1,300 earthquakes since midnight Wednesday. Meanwhile 50km to the north, a 4.5 magnitude quake shook the Askja volcano, presumably because magma from Bardarbunga crater is traveling in that direction.

Comment: Earthquakes, volcanic eruptions, sinkholes and flooding all in one: Iceland examines Bardarbunga volcano 'cauldrons'

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Attention

Persistently high methane concentrations show up over Beaufort Sea in the Arctic


arctic-news.blogspot.co.uk
Tue, 19 Aug 2014 09:18 UTC
Image

High methane concentrations have been showing up over Beaufort Sea over the past few days, as shown on the image above. This follows the recent high methane concentrations over the East Siberian Sea.

The persistent character of these very high methane concentrations over the Arctic Ocean indicates that methane has started to erupt from clathrates under the seabed, triggered by very warm water reaching the bottom of the Arctic Ocean.


Comment: Perhaps the true trigger is seismic activity, which then also warms the water at the bottom of the ocean, see : Earthquakes, volcanic eruptions, sinkholes and flooding all in one: Iceland examines Bardarbunga volcano 'cauldrons'


Methane eruptions from hydrates in sediments under the Arctic Ocean helped mean methane levels reach new records, with mean global methane readings as high as 1835 parts per billion recorded at several altitudes on August 17, 2014.

Comment: See also: Hundreds of methane plumes erupting along U.S. Atlantic coast

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