New technologies allow us to study our region from space, to map the adjacent ocean floor, to look deeply into the Earth's interior, and to pinpoint the location and
magnitude of earthquakes with great precision.
Not exact matches
An
earthquake with a preliminary
magnitude of 4.9 shook buildings in Tokyo on Wednesday, but there were no reports
of damage or injuries.
On December 26, 2004, an
earthquake with a
magnitude of 9.0 rocked Southeast Asia.
Seismic activity was detected by several monitoring agencies at 02:57 GMT at North Korea's nuclear test site,
with the US Geological Survey recording a shallow
earthquake with a
magnitude of 4.9.
Large areas
of both North and South Islands have felt
earthquakes with a
magnitude greater than 5 within the past 200 years.
These legitimate seismologists, volcanologists, physicists and engineers are being threatened
with charges
of manslaughter for failing to definitively predict an
earthquake of magnitude 6.3 in the city
of L'Aquila on April 6, 2009, which took more than 300 lives and injured an additional 1,600 area residents.
They simulated
earthquakes with magnitudes between 9.0 and 9.6 originating at different locations along the Aleutian - Alaska subduction zone, a 3,400 - kilometer (2,113 - mile) long ocean trench stretching along the southern coast
of Alaska and the Aleutian Islands where the Pacific tectonic plate is slipping under the North American plate.
After comparing central U.S.
earthquakes with tremors in geologically similar parts
of the world — and noting that induced quakes, so far, tended to rupture either smaller faults or smaller sections
of faults than West Coast quakes — they settled on an upper limit
of magnitude 6, which can damage even well - built structures.
Combining the 19th - century records
of such effects
with modern
earthquake models helped Beauducel and Feuillet pin down both the quake's
magnitude and the location
of the fault rupture, the spot where the subduction zone tore apart.
The finding suggests that maximum
earthquake magnitude scales
with the maturity
of the fault.
NEW ZEALAND / / /
EARTHQUAKE With an epicenter 6 miles from downtown, the Christchurch quake in February took 181 lives and caused $ 12 billion in damages despite having a
magnitude of just 6.3.
Scientists, therefore, reckon
with an
earthquake with a
magnitude of 7 or greater in this region in the coming years.
The pair
of quakes hit on April 11, startling seismologists
with their size (
magnitudes 8.6 and 8.2) and location (hundreds
of kilometers from the active zone that spawned the deadly 2004
magnitude 9.1
earthquake and tsunami).
Baranes adds, «His model was also consistent
with our GPS - based model in terms
of earthquake magnitude, ground surface displacement and tsunami inundation.
When the 7.0 -
magnitude earthquake struck, computer models predicted that a tsunami would hit the nation's south shore — but
with a height
of just 20 centimeters, said Fritz.
With attention riveted on the crippled Fukushima nuclear plant, Japan's scientific community has been quietly taking stock
of how extensively the
magnitude - 9
earthquake and subsequent tsunami on 11 March damaged facilities and experiments.
The long - term goal is to integrate GPS
with seismic stations to create a system that within a couple
of minutes could measure
earthquake magnitude, locate the fault that failed and determine whether a tsunami was imminent.
An
earthquake with a
magnitude of 8 or higher would stop the land from rising and also likely would bring about additional sea - level growth
of 1 to 2 meters (3.3 to 6.6 feet) in the area, he said.
To find out how the news
of bin Laden's death is being received in Islamabad, Scientific American spoke
with retail management professor Murtaza Haider
of Ryerson University in Toronto, who returned to his native Pakistan last week to conduct research on country's rehabilitation after the devastating
magnitude 7.6
earthquake in 2005.
The latest research into the little known, fault - riddled, undersea landscape off
of Southern California and northern Baja California has revealed more worrisome details about a tectonic train wreck in the Earth's crust
with the potential for
magnitude 7.9 to 8.0
earthquakes.
More than 300
earthquakes above a
magnitude 3.0 occurred in the three years from 2010 - 2012, compared
with an average rate
of 21 events per year observed from 1967 - 2000.
The Izmit
earthquake with a
magnitude of 7.4 which lasted for 45 seconds killed over 17,000 in northwestern Turkey on 17 August 1999.
Tom Parsons, a seismologist also
with the USGS in Menlo Park, and colleague Aaron Velasco,
of the University
of Texas at El Paso, analyzed the USGS
earthquake database to see if temblors
of magnitude 7 and higher might have triggered midsized quakes elsewhere in the world.
The Istanbul - Marmara region
of northwestern Turkey
with a population
of more than 15 million faces a high probability
of being exposed to an
earthquake of magnitude 7 or more.
The Met Office said on Sunday a
magnitude 5.3
earthquake at 5 kilometres (3 miles) depth had struck after midnight while another,
with a
magnitude of about 5, had occurred some five hours later.
A team
of researchers from the University
of Hawai'i at Mānoa (UHM) published a study this week that estimated the probability
of a
Magnitude 9 +
earthquake in the Aleutian Islands — an event
with sufficient power to create a mega-tsunami especially threatening to Hawai'i.
It looked as if an
earthquake with a
magnitude of 5.2 had just happened.
The Wuhan lab cost 300 million yuan (US$ 44 million), and to allay safety concerns it was built far above the flood plain and
with the capacity to withstand a
magnitude - 7
earthquake, although the area has no history
of strong
earthquakes.
Hitting the planet at a speed
of 20 kilometers per second, the 37 - to 58 - kilometer - wide space rock could have jolted Earth
with at least the force
of a
magnitude 10.8
earthquake and set off tsunamis thousands
of meters high, researchers report April 14 in Geochemistry, Geophysics, Geosystems.
With a
magnitude of 7.8, it was the worst natural disaster to strike Nepal since the 1934 Nepal - Bihar
earthquake.
JUNEAU Alaska (Reuters)- An
earthquake with a
magnitude of 5.9 struck the coast
of Alaska early on Friday, shaking people awake in the capital Juneau and cutting off some communications in the southeast part
of the state, officials said.
But there has also been a lot
of shaking,
with 183
earthquakes of magnitude 3.0 or greater on the Richter scale occurring in Oklahoma from October 2013 through April 14, the USGS said.
After underlining to Stati the importance
of prudence when dealing
with earthquakes, and in particular that one should never state that there won't be further tremors, Bertolaso then went on to tell her what the experts were to say: «It is a normal situation, these phenomena [the tremors] happen, it's better that there are 100
magnitude - 4 tremors rather than silence because 100 tremors release energy and there won't ever be the damaging tremor.»
Further, it alerts scientists that
earthquake clustering may not only characterise shallow faulting and smaller - sized
earthquakes with magnitudes lower than M7 but it is a property
of large subduction
earthquakes.
The series
of earthquakes began on March 16
with a 6.7 -
magnitude earthquake.
For example, a clustering
of earthquakes, the largest
with magnitude between 8.0 and 8.5, hit off the coast
of Crete in 365 AD.
More recently, an
earthquake of magnitude of about 7.0 hit the Messina region in Italy in 1908, causing a tsunami that killed thousands,
with observed waves locally exceeding 10 metres in height.
Although the CSZ has been relatively quiet in recent years, researchers have compiled a historical record
of full and partial ruptures
of the massive fault,
with a
magnitude 9.0
earthquake and tsunami last occurring in 1700.
They found that a large
earthquake along the northern section
of the San Jacinto fault could cascade down to the Sierra Madre - Cucamonga system,
with the potential to cause a 7.5
magnitude earthquake on the edge
of the Los Angeles metropolitan region.
Although the main
earthquake with a
magnitude of 8.1 broke the central section
of the seismic gap
of a length
of some 100 kilometres, two large segments further north and south remain intact, and these segments are able to cause strong
earthquakes with a high risk
of ground shaking and tsunamis.Oncken: «This means that the risk
of one or even several
earthquakes with a
magnitude clearly above 8 still exists.»
Japan's «Big One», a major
earthquake with an expected
magnitude of 8.1 on the Richter scale is expected imminently in the region.
According to their numerical 3D models
of an
earthquake and resultant tsunami on the Pitas Point and Red Mountain faults — faults located offshore Ventura, Calif. — a
magnitude 7.7
earthquake would result in many parts
of the regional coastline being inundated a few kilometers inland by a tsunami wave,
with inundation in places greater than that indicated by the state
of California's current reference inundation line.
With a strength
of 9.5 on the moment
magnitude scale, the Valdivia
earthquake from 1960 still ranks number one on the list
of strongest
earthquakes ever measured.
Of the three activities, wastewater disposal predominates both in terms of volumes of injected liquid and earthquake size, with magnitudes for a few of the earthquakes exceeding
Of the three activities, wastewater disposal predominates both in terms
of volumes of injected liquid and earthquake size, with magnitudes for a few of the earthquakes exceeding
of volumes
of injected liquid and earthquake size, with magnitudes for a few of the earthquakes exceeding
of injected liquid and
earthquake size,
with magnitudes for a few
of the earthquakes exceeding
of the
earthquakes exceeding 5.
According to the U.S. Geological Survey (USGS), an average rate
of 100
earthquakes per year above a
magnitude 3.0 occurred in the three years from 2010 - 2012, compared
with an average rate
of 21 events per year observed from 1967 - 2000.
In April, 1967 pesticide waste injected by a chemical plant at Denver's Rocky Mountain Arsenal destabilized a seismic fault, causing a
magnitude 5.0
earthquake — strong enough to shatter windows and close schools — and jolting scientists
with newfound risks
of injection, according to the U.S. Geological Survey.
While its residents have escaped serious injury, many
of its historic buildings suffered damage during a
magnitude 5.0
earthquake that struck in November 2016,
with an epicenter less than two miles west
of town.
Oklahoma has gotten the worst
of it, averaging more than 700
earthquakes per year
of magnitude 3 or greater over the last three years — compared
with just one per year from 1974 to 2008.
To shed light on the matter, researchers reviewed 180 publications that tackled abnormal animal behavior prior to
earthquakes and analyzed them
with respect to the animals» distance to
earthquakes of certain
magnitudes, foreshock activity, and the quality and length
of the observations.
The recent spate
of great subduction - zone quakes,
of magnitude 8 or larger, began
with the 2004 Sumatra
earthquake.