1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | Locatie Datum Kracht 1. Chile 22-mei-1960 9.5 2. Prince William Sound, Alaska 28-mrt-1964 9.2 3. Off W. Coast of N. Sumatra 26-dec-2004 9.1 4. Kamchatka 04-nov-1952 9.0 5. Offshore Maule, Chili 27-feb-2010 8.8 6. Off the Coast of Ecuador 31-jan-1906 8.8 7. Rat Islands, Alaska 04-feb-1965 8.7 8. Northern Sumatra, Indonesia 28-maa-2005 8.6 9. Andreanof Islands, Alaska 09-maa-1957 8.6 10. Assam - Tibet 15-aug-1950 8.6 11. Southern Sumatra, Indonesia 12-sep-2007 8.5 12. Kuril Islands 13-okt-1963 8.5 13. Banda Sea, Indonesia 01-feb-1938 8.5 14. Kamchatka 03-feb-1923 8.5 15. Chili-Argentinian border 11-nov-1922 8.5 |
quote:Op donderdag 15 september 2011 16:58 schreef Frutsel het volgende:
27 februari 2010 : 8.8 aardbeving Chili
189 dagen daarna
4 september 2010 : Zware aardbeving NieuwZeeland
188 dagen daarna
11 maart 2011: 9.0 aardbeving Japan
187-189 dagen daarna komen we op 15-16-17 september 2011....
als je deze vier bevingen bekijkt zou je denken dat nu de 4e hoek van het vierkant aan de beurt is... dus San Francisco - LA
quote:Op donderdag 15 september 2011 17:31 schreef marcel-o het volgende:
hier staat ook wat leuks:
http://www.earthwatcher.nl/universum/6174.html
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/pt11259000.phpquote:NewEarthquake Earthquakes Tsunamis
Preliminary: 6.6 earthquake, Near East Coast of Honshu, Japan. On 2011/09/16 19:26:44 UTC (9m ago, depth 41km). http://j.mp/o4Fo9Z
10 minutes ago
En nog een 6.2quote:Op vrijdag 16 september 2011 21:47 schreef Turbomuis het volgende:
6.6 net bij Japan.Gaat steeds beter daar... NOT
[..]
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/pt11259000.php
En nu ook weer een 5,6.... gaat goed daar.quote:Op vrijdag 16 september 2011 23:48 schreef Light het volgende:
[..]
En nog een 6.2
http://earthquake.usgs.go(...)uakes/usc0005vyj.php
Da's de derde 6.0+ in die regio binnen twee dagen
6.2 36.289N 141.308E - 15 Sep 2011 08:00:07 UTC
6.6 40.288N 142.727E - 16 Sep 2011 19:26:42 UTC
6.2 40.221N 143.049E - 16 Sep 2011 21:08:05 UTC
Je vergeet er een paar...quote:Op zaterdag 17 september 2011 00:11 schreef Frankz0rz het volgende:
[..]
En nu ook weer een 5,6.... gaat goed daar.
quote:BREAKING NEWS:
Three people killed as British embassy compound wall collapses after earthquake in Nepali capital Kathmandu
quote:Deaths after quake in Nepal/India
A magnitude 6.8 earthquake shook India's Sikkim state on Sunday night, sending people running from their homes. The epicenter of the quake was about 40 miles from Gangtok, the state's capital, on the Nepalese border.
The Indian government has reported that eight people died in India and Nepal, at least three when a building in Kathmandu collapsed. The quake also created a number of mudslides on the outskirts of Gangtok, killing at least one man who was trapped inside his car.
Additionally, at least 100 people were injured, according to initial reports. The earthquake also temporarily disrupted telephone lines, and the rapid rate of cell phone use over-burdened mobile networks, according to The Hindustan Times.
The tremors were felt as far away as Delhi, about 900 miles to the west.
India sits on the Indian Plate, a tectonic plate that has been colliding with the Eurasia Plate for about 50 million years. The Indian Plate is slowly being wedged under Eurasia, pushing up the northern plate, causing it to lift. The tectonic movement created the Himalayan Mountain range, which straddles the collision point between India, Nepal, Tibet and China.
Because of the plates' movement, the Himalayas are growing taller every year.
Earthquakes in India aren't rare, but a 6.8 magnitude quake is significant. The most recent quake in the country occurred on Sept. 7, when a 4.2 magnitude quake hit Delhi, where just hours earlier a bomb blast killed 11 and injured dozens more outside the Delhi High Court.
Delhi is considered to be in Zone 4 of the Earthquake Hazard Map of India, and is therefore designated as being in the High Damage Risk Zone. There hasn't been a significant earthquake in the city's recent history, although it has experienced minor vibrations from quakes elsewhere in the country and in Pakistan.
Gangtok is also in Zone 4, and is nestled between two Zone 5 (highest risk) areas to the east and west.
On Sunday, there were also earthquakes reported in Virginia and New Zealand, although they were significantly less potent than the Sikkim quake.
A series of tremors in Virginia, ranging from magnitudes 1.9 to 2.1 on the Richter scale, are now considered to be aftershocks of the Aug. 23 earthquake that shook the East Coast of the United States, according to the U.S. Geological Survey. Meanwhile, a 4.1 magnitude quake hit North Queensland, New Zealand around 2:30 a.m. Sunday.
There have not been any reports of injuries or damages in either location.
Last Thursday, two significant earthquakes happened in Cuba and Japan, ranging from a 6.0 to a 6.2-magnitude respectively.
Are multiple earthquakes in the same day anything to worry about?
Considering that there are about 1.5 million earthquakes a year, not really. And that's just above magnitude 2.0. Below that, there are more millions.
Additionally, USGS claims that 134 earthquakes between the magnitudes 6 and 6.9 occur annually, the same magnitude as those that hit India, Cuba and Japan. Statistically, is it not unlikely that two would happened on the same day.
In the past week, there have been more than 250 earthquakes in Alaska alone, nearly 30 of which happened Sunday. In California and Nevada, there were nearly 400 quakes over the same period, the largest reaching around 4.0 magnitudes, according to USGS.
Yet, 2011 has seen its share of large-scale quakes. In March, a 9.0 earthquake hit Japan, causing enormous damage and a nuclear disaster at the Fukushima power plant. A month earthlier, a 6.3 magnitude earthquake in Christchurch, New Zealand killed nearly 200.
On Sept. 6, a 6.6 magnitude earthquake hit the Indonesian island of Sumatra, killing a 12-year-old boy who was lying in bed and a man who died of a heart attack as he fled his home.
Maar daar zie ik helemaal niks van op usgs staan Alleen een 4,6 en 4,8 in diezelfde regio.quote:De beving werd gevolgd door minstens twee naschokken van 6,1 en 5,3
NRC meldt die cijfers ook, maar ze kloppen volgens mij idd niet.quote:Op zondag 18 september 2011 23:11 schreef Frankz0rz het volgende:
Op de FP staat:
[..]
Maar daar zie ik helemaal niks van op usgs staan Alleen een 4,6 en 4,8 in diezelfde regio.
Mogelijk nu eindelijk de lang verwachtte uitbarsting bij de Cleveland vulkaan daar?quote:Op maandag 19 september 2011 10:25 schreef Scrummie het volgende:
Vanochtend al een 5.2 en een 5.4 bij Fox Islands, Aleutian Islands, Alaska, nu weer een 5.8.
quote:Ground beneath Kanchenjunga slips south, alarm bells ring for Bengal
New Delhi, Sept. 18: A behemoth chunk of rock about 20km beneath the mountains around Kanchenjunga lurched southward today in the 6.9 magnitude earthquake that scientists say should stir the Bengal and Sikkim governments into a state of high alert.
The first and preliminary analysis of the mechanisms underlying the earthquake near the Sikkim-Nepal border suggests that the western edge of Sikkim had slipped southward relative to Nepal during the earthquake, geophysicists and seismologists said.
The first earthquake was followed by two smaller 4.8 and 4.6 magnitude earthquakes on the eastern side of the main event in a pattern that points to additional build-up of strain in subterranean rocks across Sikkim, three scientists tracking the events said.
“The movement of rock associated with the 6.9 event on the western side of Sikkim is likely to have caused a pile-up of strain towards its east leading to the two subsequent events," said Supriyo Mitra, a seismologist at the Indian Institute of Science Education and Research, Calcutta. “In a region where strain has accumulated for years, the 6.9 event was a trigger for the next two,” Mitra told The Telegraph.
Geophysicists say the two smaller earthquakes would not have released the enormous strain that has accumulated in the region. “The two (smaller) quakes were like peanuts,” said Vinod Gaur, a geophysicist at the Indian Institute of Astrophysics, Bangalore.
G.C Debnath, director of the Alipore meteorological centre, said: “The first tremor with an intensity of 6.9 on the Richter scale happened at 6.11pm, followed by a 5.7 intensity aftershock at 6.21pm. The third one happened at 6.43pm with 5.3 intensity, while the last one occurred at 7.24pm with intensity of 4.6 at Richter scale.”
“These are not aftershocks because they are not on the same fault as the first event,” said Mitra, the seismologist at the Indian Institute of Science Education and Research, who maintains four seismic monitoring stations in Sikkim.
Scientists say release of the accumulated strain in Sikkim could happen in months or years — and earthquakes cannot be predicted. “I think prudence dictates that Bengal and Sikkim should initiate action — at least across Sikkim and north Bengal — to scrutinise buildings such as schools and hospitals, where a large number of people assemble, for vulnerability and retrofitting using available engineering solutions,” said Gaur.
The Himalayan region marks the zone where India is slipping under Tibet at the rate of about 18mm per year. This tectonic plate movement leads to strain build-up, which is released when subterranean rocks along the slip zone reach their fracture points.
Scientists estimate that the amount of energy released during the 6.9 earthquake was equivalent to 340,000 tonnes of TNT, or about 22 times the energy released by the atomic bomb dropped on Hiroshima.
Geophysicists say earthquakes in the Himalayas are likely to cause significant shaking of structures built along the Gangetic plains across northern and eastern India. “The contrast between the soft sediments lying above the harder rock all along the Gangetic plains is likely to cause amplification of energy,” said Shyam Sunder Rai, a scientist at the National Geophysical Research Institute, Hyderabad.
“Whatever energy has been released by the earthquakes today does not rule out the possibility of an even bigger quake in other areas along the Himalayan region,” said Rai.
Gaur believes moderate earthquakes may mean that more are to come. “Moderate earthquakes in plate boundary environments such as the Himalayas therefore verily presage closeness of the region to a great rupture of magnitude 8 or so.”
The US Geological Survey said this region has experienced relatively moderate seismicity in the past with 18 earthquakes of magnitude 5 or larger over the past 35 years within 100km of the epicentre of today’s event. The largest of these was a magnitude 6.1 earthquake in November 1980 about 75km southeast.
Forum Opties | |
---|---|
Forumhop: | |
Hop naar: |