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Surprise Underwater Volcanic Eruption Discovered
The chain is all that is visible of an ocean-bottom hydrophone, an instrument that detects earthquakes, buried in about six feet of new lava produced by a recent eruption at the Axial Seamount. Credit: Bill Chadwick, Oregon State University, © Woods Hole Oceanographic Institution.An undersea volcano has erupted off the coast of Oregon, spewing forth a layer of lava more than 12 feet (4 meters) thick in some places, and opening up deep vents that belch forth a cloudy stew of hot water and microbes from deep inside the Earth.
Scientists uncovered evidence of the early April eruption on a routine expedition in late July to the Axial Seamount, an underwater volcano that Read more…
Japan tsunami broke huge icebergs off Antarctica
The massive March 11 Japan earthquake and its ensuing tsunami were so powerful that they broke off huge icebergs thousands of miles away in Antarctica, according to a new study.
The calving of icebergs (where a huge chunk of ice breaks off from a glacier or ice shelf) from the Sulzberger Ice Shelf in Antarctica was linked to the tsunami, which originated with the magnitude 9.0 earthquake off the coast of the Japanese island of Honshu, by satellite observations of the Antarctic coast immediately after the earthquake.
Icebergs have been reported to calve following earthquakes before, including after the magnitude 6.3 earthquake that struck Christchurch, New Zealand, on Feb 22. But the new finding marks the first direct observation of such a connection between tsunamis and iceberg calving.
6.0 Quakes Every Day, California Swarms
Japan’s Big Earthquake Rattled The Ionosphere
The giant 11 March 2011 magnitude 9 Tohoku earthquake not only shook the Earth and caused devastating tsunamis but also rattled the ionosphere, according to a new study.
Image: NASAThe ionosphere is a part of the upper atmosphere, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on the Earth. Read more…
Scientists Study Future Megathrust Earthquake In Pacific Northwest
The Olympic Peninsula in Washington State, USA, and British Columbia, Canada, could be among the hardest hit locations in the event of a future megathrust earthquake along the Pacific coast.
A new study led by Simon Fraser University earth scientist Andy Calvert and published in Nature Geoscience this week indicates the depth of the fault between the two tectonic plates forming the Earth’s surface in the Pacific Northwest is seven kilometres deeper than previously proposed.
Calvert speculates it may mean part of the fault’s locked zone — where a megathrust earthquake can occur — could be beneath the Olympic Peninsula.
Calvert’s team studied a 200-kilometre section of a fault formed by the subduction of the oceanic Juan de Fuca plate under the Read more…
Ring of Fire: Update
Labor market risks of a magnitude 7.8 earthquake in southern California
PDF file of this Regional Report | Other BLS Regional Reports
Authors:
Richard Holden, Amar Mann, and Tian Luo
Bureau of Labor Statistics Read more…
Something is DEFINITELY wrong with our planet. (TIMELINE of Disasters, facts, and anomalies)
Apotheosis
Earthquakes
Yes Earthquakes happen all the time. In fact, they’ve happened millions of times. They began recording them in the mid 1600’s and couldn’t accurately measure the magnitude until the mid 1700’s. After reviewing past earthquakes they found it very rare that an earthquake hit over 8.5 magnitude or higher. Here is the results of all 8.5 magnitudes or higher.
1600’s there were 2 the whole century.
Lima, Peru 8.5
Valdivia, Chile 8.5
1700’s there were 5 the whole century.
Pacific Ocean, USA and Canada 8.7-9.2
Pacific Ocean, Shikoku region, Japan 8.6
Valparaiso, Chile 8.7-9.0
Concepción, Chile 8.5
Lisbon, Portugal 8.5-9.0
1800’s there were 2 the whole century. Read more…
More Than 720 Earthquakes Recorded On El Hierro In One Week
An unprecedented 720 earthquakes have been recorded on El Hierro, the smallest of the Canary Islands, during the past week.
The earthquake swarm has even prompted the Canary Islands Government to convene the first ever meeting of the Steering Committee and Volcanic Monitoring, reflected in the Specific Plan Protection Civil and Emergency for Volcanic Risk, given what it described “the significant increase in seismic activity”.
The National Geographic Institute (IGN) and Volcanological Institute of the Canary Islands is continuing to record scores of earthquakes, measuring between 1 and 3 on the Richter Scale, each day. The majority of earthquakes are being recorded at a depth of between 5km and 15 km.
According to Actualidad Volcánica de Canarias (AVCAN), the vast majority of the tremors have Read more…
Powerful Shallow Earthquake Hits Gulf Of California
The Gulf of California, a body of water that separates the Baja California Peninsula from the Mexican mainland, was struck by a powerful shallow earthquake Tuesday morning.
The 5.8 magnitude quake struck at 11.44a.m. local time. The epicentre was situated 86 km (53 miles) southwest of Los Mochis, Sinaloa; 138 km (85 miles) north-northeast of La Paz, Baja California Sur; and 142 km (88 miles) west-southwest of Guamuchil, Sinaloa (Mexico).
The US Geological Survey (USGS) measured the seaquake depth at Read more…
Strong earthquake hits Kyrgyzstan-Uzbekistan border area
BISHKEK (BNO NEWS) — A strong earthquake struck the southwestern Kyrgyzstan and eastern Uzbekistan border area on early Wednesday morning, seismologists said, but there were no immediate reports of damage or casualties.
The 6.2-magnitude earthquake at 1.35 a.m. local time (1935 GMT Tuesday) was centered about 15 kilometers (9.3 miles) east of Okhna, a village in the Batken Province of Kyrgyzstan near the border with Uzbekistan. It struck about 10 kilometers (6.2 miles) deep, making it a shallow earthquake, according to the Kazakhstan National Data Center (KNDC).
The United States Geological Survey (USGS), which measured the strength of the Read more…
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