Friday, April 22, 2016

MONUMENTAL EARTH CHANGES: Major Global Seismic Uptick - 40 Volcanoes ARE ERUPTING RIGHT NOW With 34 Of Them Along The Pacific Ring Of Fire!

Villarrica volcano, Chile

April 22, 2016 - EARTH - You may not have noticed, but our planet is becoming increasingly unstable. According to Volcano Discovery, 40 volcanoes around the globe are erupting right now, and only 6 of them are not along the Ring of Fire. If that sounds like a very high number to you, that is because it is a very high number. As I have written about previously, there were a total of 3,542 volcanic eruptions during the entire 20th century. When you divide that number by 100, that gives you an average of about 35 volcanic eruptions per year. So the number of volcanoes that are erupting right now is well above the 20th century's average for an entire calendar year. And of course we are witnessing a tremendous amount of earthquake activity as well. Nepal was just hit by the worst earthquake that it had seen in 80 years, and scientists are telling us that the Himalayas actually dropped by an astounding 3 feet as a result of that one earthquake. How much more does our planet have to shake before people start paying attention?

Of course the things that we have been seeing lately are part of a much larger long-term trend. Seismic activity appears to have been getting stronger over the past few decades, and now things really seem to be accelerating. The following is how one news source recently summarized what we have been witnessing...

If it seems like earthquakes and erupting volcanoes are happening more frequently, that's because they are. Looking at global magnitude six (M6) or greater from 1980 to 1989 there was an average of 108.5 earthquakes per year, from 2000 to 2009 the planet averaged 160.9 earthquakes per year: that is a 38.9% increase of M6+ earthquakes in recent years. Unrest also seems to be growing among the world's super-volcanoes. Iceland (which is home to some of the most dangerous volcanoes on the planet), Santorini in Greece, Uturuncu in Bolivia, the Yellowstone and Long Valley calderas in the U.S., Laguna del Maule in Chile, Italy's Campi Flegrei - almost all of the world's active super-volcanic systems are now exhibiting some signs of inflation, an early indication that pressure is building in these volcanic systems.
But of course most Americans are never going to care about any of this until it starts affecting them personally.

Well, perhaps they should start paying attention to the warning signs. In recent weeks we have seen significant earthquakes in Michigan, Texas, Mississippi, California, Idaho And Washington. In addition, it is being reported that pressure is building in dormant volcanoes in Arizona and California. Just because we have not had a killer earthquake or a large volcanic eruption in the U.S. in recent years does not mean that it will always be that way. Right now the entire planet appears to be waking up, and this especially seems to be true of the Ring of Fire.


 Volcano activity


If you are not familiar with the Ring of Fire, just imagine a giant ring that runs around the outer perimeter of the Pacific Ocean. Approximately 90 percent of all earthquakes and approximately 75 percent of all volcanic eruptions occur within this area, and the entire west coast of North America is considered to be part of the Ring of Fire.

For so long, the west coast has been incredibly blessed not to have experienced a major seismic event. But scientists tell us that it is only a matter of time.

And right now, just about every other part of the Ring of Fire is shaking violently.

For example, a magnitude 6.8 earthquake just hit Japan on Wednesday
...

A magnitude-6.8 earthquake that shook northeast Japan on Wednesday was an aftershock of the devastating 2011 quake that triggered a massive tsunami and nuclear power plant meltdown.

"We consider this morning's earthquake to be an aftershock of the 2011 Northeastern Pacific Earthquake," said Yohei Hasegawa, an official at the Japanese meteorological agency.

The temblor, which struck just after 6 a.m. local time (5 p.m. ET Tuesday), was sparked by the Pacific tectonic plate "subducting," or moving under, the main land plate, he added.

Hasegawa warned that more tremors may be on the way.

One Japanese expert is warning that Japan "might have entered an era of great earthquakes and volcanic eruptions", and considering the immense devastation that the great earthquake and tsunami of 2011 caused, that is a very sobering assessment.

Meanwhile, a series of very strong earthquakes have struck Papua New Guinea recently as well. The following comes from the Washington Post...
A powerful earthquake rattled Papua New Guinea on Thursday, the fourth strong quake to hit the South Pacific island nation in a week. The temblor prompted officials to issue a local tsunami warning, but it was lifted shortly afterward with no reports of damage.

The 7.1-magnitude quake struck about 150 kilometers (94 miles) southwest of the town of Panguna on Bougainville Island at a depth of 23 kilometers (14 miles), the U.S. Geological Survey reported.
Once again, just because things have always been a certain way does not mean that they will always be that way.

As Americans, we are not accustomed to being concerned about major earthquakes and massive volcanic eruptions, but that could soon change in a big way.

The truth is that our planet and our sun are changing in ways that are unpredictable and that our scientists don't completely understand.

For example, a recent LiveScience article discussed the fact that scientists are deeply puzzled by the fact that the magnetic field of our planet is getting weaker 10 times faster than previously believed...

Scientists already know that magnetic north shifts. Once every few hundred thousand years the magnetic poles flip so that a compass would point south instead of north. While changes in magnetic field strength are part of this normal flipping cycle, data from Swarm have shown the field is starting to weaken faster than in the past. Previously, researchers estimated the field was weakening about 5 percent per century, but the new data revealed the field is actually weakening at 5 percent per decade, or 10 times faster than thought.

As such, rather than the full flip occurring in about 2,000 years, as was predicted, the new data suggest it could happen sooner.

And in a previous article, I discussed how one scientist has discovered that activity on the sun is declining at a faster pace "than at any time in the last 9300 years" right now.

I don't pretend to have all the answers for why these things are happening, but clearly some very unusual things are taking place.

So what do you think?

Do you believe that you know why our planet and our sun are experiencing such dramatic changes?


- Daily Media.





GEOLOGICAL UPHEAVALS: Massive 15-Metre Sinkhole Opens Up In Tring, Hertfordshire, England - Road Closed To Traffic!

Bob.fm.co.uk
April 22, 2016 - ENGLAND - A 15 metre long sinkhole has appeared in a road in Tring

The road has been closed to traffic after a large sinkhole appeared there.

It was first noticed yesterday morning (Wednesday) in Bunyan Close, Tring.

The Highways Department originally told residents that the road would be shut for two days, but it is now thought it will be significantly longer.

A safety barrier has been erected around the hole, which is believed to stretch at least 15 metres under the surface of the road.



- Mix96.






 

SIGNS IN THE HEAVENS: Weather Phenomenon - Sun Halo Captured Over Jersey Shore, New Jersey!

Justin Louis

April 22, 2016 - NEW JERSEY, UNITED STATES - If you've been out and about enjoying this beautiful spring day in Ocean County and happened to look up, you may have noticed the distinct rings around the sun.

So what are they?

We wanted to find out!

While it's nice and warm here on the ground at the Jersey Shore, the upper atmosphere is pretty cold. Cold enough for there to be ice crystals up there.

On a day like today, the conditions are just right to refract the Sun's rays through the ice crystals, causing the halo effect.

It's called a 22° halo, from the fact that the ring appears to be, "...within a radius of approximately 22° around the Sun".

It's actually pretty common, but on days like today, it's more obvious than others. - WOBM - 92.7.




GEOLOGICAL UPHEAVALS: Massive Landslide In Arunachal Pradesh, India - At Least 15 People Killed; Several Roads Blocked! [VIDEO]

15 people killed in a landslide in Tawang area of Arunachal Pradesh, 2-3 feared buried. ANI

April 22, 2016 - INDIA - At least 15 labourers were killed when a massive landslide triggered by incessant rains hit a labour camp in Tawang district of Arunachal Pradesh on Friday.

The incident occurred at 3am when 17 labourers engaged in construction works were inside the camp at a place 4km away from Tawang town, additional deputy commissioner (headquarters) Lod Gambo said.

"So far nine bodies have been extricated from the debris," Gambo said, adding incessant rain for the past couple of days had triggered landslides in several places of the border district.

Gambo said rescue operation was on and two JCBs have been pressed into service to clear the debris.


WATCH: Massive landslide in India.






The PWD road in between New Lebrang and government higher secondary school has also been blocked due to landslide, while damages to residential buildings have been reported from the area.

Heavy rainfall in the past few days in the district resulted in a flood-like situation which severely damaged the Kitpi Ph-I and Ph-II hydel projects.

Taking serious note of the situation, DC Duly Kamduk has directed the department concerned for assessment and submission of detailed report for action. - Times of India.





SIGNS IN THE HEAVENS: Weather Phenomenon - Stunning Sun Halo Filmed Over Wirral, England!

April 22, 2016 - ENGLAND - This beautiful Sun Halo was spotted over Wirral today by regular weather contributor Kirsty Bakstad.

The sun halo was spotted as the region enjoyed a second day of sunny weather as Merseyside recorded a top temperature of 15.1C.


WATCH: Sun Halo over Wirral.




Although yesterday was hotter on Merseyside, today was officially the hottest day of the year for the UK, as Porthmadog in Wales enjoyed temperatures of 20.3C.

However, the recent warm weather will be short lived, as Arctic air will bring back the chillier weather in time for the weekend.
Wrap up warm! A cold plunge for the UK this weekend and continuing into next week https://t.co/I6aoncQMhZ
— Met Office (@metoffice) April 21, 2016
Sun Halos are caused when light interacts with ice crystals suspended in the atmosphere.

The crystals bend direct sunlight, dispersing the light into colours and projecting it elsewhere into the sky, at a usual 22 degree angle a halo can be seen around the sun.

They often do mean that rain is going to fall within the next 24 hours as the cirrostratus clouds that cause them can signify an approaching frontal system. - Wirral Weather.






GEOLOGICAL UPHEAVALS: Sinkholes Keep Popping Up Across The United States - 17-FOOT Sinkhole Collapses Street In San Francisco, California! [VIDEO]

Screenshot via NBC News

April 22, 2016 - CALIFORNIA, UNITED STATES - A sinkhole appeared near a roadwork site Thursday evening in Pacific Heights, according to the San Francisco Public Utilities Commission.

A 17-foot by 22-foot area of Sacramento Street collapsed between Lyon and Baker streets around 5 p.m.

Road crews were already nearby, filling in an indentation in the street, when the collapse occurred. No injuries were reported.

The incident appears to have been caused by a sewer main break at the same location, although the cause of the break is not yet known.

Water and sewer service has not been affected, however.

Crews have secured the scene, and Sacramento Street is closed between Lyon and Baker. Muni lines have not been affected.

Repairs, which will begin Friday morning, are expected to take two to three days to complete.


WATCH: Massive sinkhole in San Francisco.




- Bay City News Service.




 

MONUMENTAL DELUGE: The Latest Reports Of High Tides, Heavy Rainfall, Flash Floods, Sea Level Rise, Widespread Flooding, And Catastrophic Storms - Over 10,000 Remain Displaced By Floods As Further Heavy Rainfall Hits Uruguay; And Further Floods Affect Luanda, Angola Leaving 19 People Dead, 800 Families Homeless! [PHOTOS + VIDEOS]

Floodwater in Rocha, Uruguay. Melissa

April 22, 2016 - EARTH - The following list constitutes the latest reports of high tides, heavy rainfall, flash floods, widespread flooding, sea level rise and catastrophic storms.

Over 10,000 remain displaced by floods as further heavy rainfall hits Uruguay

Over 10,000 people remain displaced by flooding currently affecting all 19 departments of Uruguay.

At least 10 people have died as a result of severe weather in the country in the last 10 days. Five people died after a tornado hit the town of Dolores. A further five victims have drowned in floods.

Yet more heavy rainfall over the last 2 days is likely to prevent people from returning to their homes for the next few days.

However, emergency authorities in Uruguay say the situation is under control and victims are being provided with food and health care.

According to the latest reports from Uruguay emergency authorities ( Sistema Nacional de Emergencias - SINAE), 10,097 people remain displaced by the flooding that has affected the country since 15 April 2016.

SINAE say that roads and highways have been blocked in over 30 locations.The departments with the highest numbers of displaced are Artigas (639), Colonia (1,650), Durazno (2,179), Paysandú (1,411), San José (1,250) and Treinta y Tres (1,695). Although areas around Montevideo have been affected, SINAE say that no evacuations have taken place in the capital.


Montevideo Portal

Floodwater in Rocha, Uruguay. Melissa


The Uruguayan Institute of Meteorology (Institudo Uruguayo de Meteorología, INUMET) issued further orange level (level 3 of 4) rainfall warnings on 20 April. During the following 24 hours, at least 10 locations reported over 80 mm of rain. After a short respite, further heavy rain is expected from Saturday 23 April.

Despite the further heavy rainfall, SINAE say that the situation is under control in all affected areas. Relevant government departments and agencies are working together to ensure the health and safety of those displaced, and to provide technical support and food items. Rainfall figures

Figures for 24 hours between 20 and 21 April, according to INUMET

Artigas

Baltasar Brum - 100.0 mm

Cerro Largo

Laguna Merín - 95.0 mm

Salto

Belén - 115.0 mm

Termas de Arapey - 103.0 mm
San Antonio_Sl - 95.0 mm
P. de Valentín (Rincón) - 90.0 mm
Quintana - 82.0 mm
Palomas - 81.0 mm

Tacuarembó

Valle Edén - 87.0 mm
San Gregorio - 98.0 mm

When the severe weather first struck, as much as 180 mm in 24 hours was observed in Rocha, in the east of Uruguay, on the 16 April 2016. The same day 150 mm of rain in 24 hours was recorded at the San José station and 140 mm in Florida, both of them in the south of the country.


Rain forecast for Uruguay 23 to 24 April 2016. INUMET


Significant rain was also observed on Sunday 17 April 2016, with 121.5 mm in 24 hours recorded at Pasos de los Toros station in Tacuarembó Department, in central Uruguay.


Further floods affect Luanda, Angola leaving 19 people dead, 800 families homeless

The recent flood situation in Luanda, Angola, appears to have worsened and the latest report from the National Service for Civil Protection and Fire (SNPCB) says that at least 19 people have died, 50 injured and four are reported as missing. Figures are from preliminary damage assessments and authorities warned that these numbers could increase.

The floods come just a the World Health Organisation has confirmed that Angola is currently experiencing a major outbreak of yellow fever, a disease spread by mosquitoes. Over 230 people have died since December 2015 in Angola, with 165 of the deaths in Luanda alone.

Luanda Floods

Initial reports said that flooding had affected Cacuaco, in the north of Luanda, hwere 9 deaths were reported on Wednesday 20 April 2016.

Since then ANGOP, the Angola news agency, quoting SNPCB officials, say that a further people have died, more than 800 families are homeless and 20 homes have collapsed.

The worst affected municipalities are Viana, Cacuaco, Belas, Cazenga and urban districts of Ingombota, Kilamba Kiaxi, Rangel and Maianga.

Social Media

Twitter: zenaida machado

Twitter: zenaida machado

Twitter: zenaida machado








Yellow Fever Outbreak Causes 238 Deaths

The World Health Organisation reports that Angola is currently suffering from one of the worst outbreaks of yellow fever in decades. The recent flooding may well create further breeding grounds for mosquitoes which spread the disease.

WHO say:
“As of 7 April 2016, a total of 1,708 suspected cases, including 238 deaths (CFR: 13.9%), had been reported from 16 of the country’s 18 provinces. Luanda remains the most affected province with 1,135 cases (405 confirmed), including 165 deaths (CFR: 14. 5%). The other most affected provinces are Huambo (266 suspected cases, 37 deaths), Huila (95 suspected cases, 16 deaths) and Benguela (51 suspected cases, 0 deaths). Between 6 and 7 April, 30 new suspected cases, including 4 deaths, were reported across the country – 19 of these suspected cases and 2 of the reported deaths came from Luanda.”

About Yellow Fever
Yellow fever is an acute viral haemorrhagic disease transmitted by infected aedes and haemogogus mosquitoes. The “yellow” in the name refers to the jaundice that affects some patients. Up to 50% of severely affected persons without treatment will die from yellow fever.

According to WHO, yellow fever can be prevented through vaccination and mosquito control. The yellow fever vaccine is safe and affordable, and a single dose provides life-long immunity against the disease.

Mosquito control can also help to prevent yellow fever, and is vital in situations where vaccination coverage is low or the vaccine is not immediately available. Mosquito control includes eliminating sites where mosquitoes can breed, and killing adult mosquitoes and larvae by using insecticides in areas with high mosquito density. Community involvement through activities such as cleaning household drains and covering water containers where mosquitoes can breed is a very important and effective way to control mosquitoes.


- Floodlist.   






EXTREME WEATHER: "Dust Devil" Whirlwind Twister Terrifies Schoolkids In Gansu, China - Lifts Boy High Into The Air! [VIDEO]

‘Dust devil’ whirlwind

April 22, 2016 - CHINA - A 'dust devil' whirlwind has terrified a bunch of schoolkids in China, when it ripped through a sports event. One of the students got thrown into the air and injured.

Three little twisters tore through a sports field
at Yuanquan Primary School, in northern Gansu province. The whole thing got captured on video.

Kids can be heard screaming in terror, as the twisters rip through the place, and objects are thrown in the air.

The children are trying to lie on the ground to avoid being hurt by the terrifying whirlwind.


Sudden “dust devil” lifts up boy in school playground in Guazhou, China. People's Daily,China

"We brought the short and thin children together to lie on the ground," one of the school's teachers, Fang Fang, told CCTV.

A boy is hurled into the sky, as shown in a picture taken by one of the witnesses of the "dust devil" madness.


WATCH: "Dust Devil" in Gansu, China.




"[The twister] was at least 3 meters high. I rushed to him and tried to catch him. But just in two or three seconds, the student fell to the ground," said Tong Ruiyang, a policeman at the Guazhou Public Security Bureau.

According to other estimates, the whirlwinds were up to 40 meters high.

The student suffered minor head injuries and was taken to the hospital.

"We immediately started to evacuate the students. But in a very short time, the second round of the dust devil arrived," Fang told CCTV, as cited by NBC News.


- RT.




MASS ANIMAL DIE-OFFS: Migratory Patterns And Disaster Precursors - 10 Dolphins Die After Stranding Of 50 On Beach In Panama; And Mass Fish Deaths Investigated In Vietnam?!

Dolphins were found stranded and dead on a shore in Panama. AUTORIDAD DE LOS RECURSOS ACUATICOS DE PANAMA/CNN

April 22, 2016 - EARTH - The following constitutes the latest reports of unusual and symbolic animal behavior, mass die-offs, beaching and stranding of mammals, and the appearance of rare creatures.

10 dolphins die after stranding of 50 on beach in Panama

In Panama, 10 dolphins were found dead on a beach this Wednesday after a group of approximately 50 were stranded on the shore.

Residents of Cambutal village, in the province of Los Santos, alerted authorities about the presence of the dolphins stranded on the shore of the Ostional Beach.

Twenty-five dolphins were returned to the sea in stable condition, while others are receiving treatment by environmental authorities, representatives of the Aquatic Resources Authority of Panama, and the environment ministry.

The species were identified as bottlenose dolphins, the most common in the region.




Mass fish deaths investigated in Vietnam

A villager shows dead sea fish he collected on a beach in Phu Loc district, in the central province of Thua Thien Hue.
STR/AFP/Getty Images

Vietnam said on Thursday it was investigating whether pollution is to blame for a spate of mysterious mass fish deaths along the country's central coast after huge amounts of marine life washed ashore in recent days.

Tonnes of fish, including rare species which live far offshore and in the deep, have been discovered on beaches along the country's central coastal provinces of Ha Tinh, Quang Tri, Quang Binh and Hue.

"We have never seen anything like it,"
aquaculture official Nhu Van Can told AFP on Thursday.

The strange situation first came to light when farmed fish in the area began dying in great numbers, he said, with locals later discovering huge numbers of dead fish on beaches.

Local fishermen told state-run media that they are burying hundreds of kilograms of fish everyday.

"If you sail just three miles offshore, you can see dead fish all over the ocean floor," the state-run Tuoi Tre quoted local fishermen as saying.

Signs point to the fish having been poisoned by "unidentified substances," Tran Dinh Du, deputy director of agriculture in Quang Binh province, said, according to the report.

"We have asked people not to eat the fish and not use the fish as food for their livestock," Du added.

State news outlet Thanh Nien quoted worried locals saying they dared not eat any of the washed up fish, adding in their report that "all signs (are) pointing to an environmental disaster."

Central Ha Tinh province is home to a sprawling economic zone which houses numerous industrial plants, including a multi-billion dollar steel plant run by Taiwanese conglomerate Formosa.

Hanoi has dispatched teams of environmental experts and officials to investigate the phenomenon, the Ministry of Environment said in a statement posted online.

"We must quickly establish whether the fish have died because of environmental pollution," environment minister, Tran Hong Ha said in the report.

Vietnam has a long coastline and much of the country's export income depends on seafood, including farmed shrimp, catfish and wild-caught tuna.

Last year, the country earned $6.6bn from seafood exports.


- WDAM | Guardian.






MONUMENTAL EARTH CHANGES: Strong 6.0 Magnitude Earthquake Hits Ecuador Amid Recovery Efforts - Death Toll Rises To Over 580; 155 Still Missing; Over 23,500 People Left Without Homes; Damages Estimated At A "STAGGERING $3 BILLION"! [MAPS + VIDEO + TECTONIC SUMMARY]

USGS earthquake location.

April 22, 2016 - ECUADOR - A 6.0-magnitude earthquake has struck off the coast of Ecuador, the US Geological Survey (USGS) has reported.

The new tremblor comes just days after a devastating 7.8 quake killed at least 587 people in the South American country and amid internationally-assisted recovery efforts.

The earthquake was centered some 33.0 kilometers (20.5 miles) north-northwest of Bahia de Caraquez and some 100 kilometers (62 miles) from the city of Portoviejo. It hit at a depth of 10 kilometers.


USGS shakemap intensity.


The latest tremblor came just days after a strong 7.8 magnitude quake hit the country on Saturday, whose death toll has already climbed to over 580 victims, the government reported on Thursday. With 155 people still unaccounted for, the death toll is expected to rise even further, however.


Soldiers stand guard next to a collapsed buildings at the village of Manta, after an earthquake struck off Ecuador's Pacific coast, April 21, 2016.
 Henry Romero / Reuters

The damage to the country’s infrastructure appears unprecedented, with over 23,500 people left without homes. The quake was followed by two aftershocks of 6.1 and 6.3 magnitudes. The country’s president, Rafael Correa, said that the damages inflicted by the disaster are estimated at a staggering $3 billion.

He has consequently announced plans to raise taxes in order to rebuild the affected areas.Correa said on Twitter that three aftershocks were registered on Thursday night, two of which were “fairly strong.” He called on residents to “keep calm”.


WATCH: Cape Verde - Russian humanitarian aid aircraft en route to Ecuador .




“We should expect about ten aftershocks of that magnitude,” he added.Russia’s Emergency Ministry has sent an airplane carrying 30 tons of humanitarian aid to Ecuador, including food, tents, and mobile electric stations on order of Russian President Vladimir Putin.


USGS Seismotectonics of South America (Nazca Plate Region)

The South American arc extends over 7,000 km, from the Chilean margin triple junction offshore of southern Chile to its intersection with the Panama fracture zone, offshore of the southern coast of Panama in Central America. It marks the plate boundary between the subducting Nazca plate and the South America plate, where the oceanic crust and lithosphere of the Nazca plate begin their descent into the mantle beneath South America. The convergence associated with this subduction process is responsible for the uplift of the Andes Mountains, and for the active volcanic chain present along much of this deformation front. Relative to a fixed South America plate, the Nazca plate moves slightly north of eastwards at a rate varying from approximately 80 mm/yr in the south to approximately 65 mm/yr in the north. Although the rate of subduction varies little along the entire arc, there are complex changes in the geologic processes along the subduction zone that dramatically influence volcanic activity, crustal deformation, earthquake generation and occurrence all along the western edge of South America.

Most of the large earthquakes in South America are constrained to shallow depths of 0 to 70 km resulting from both crustal and interplate deformation. Crustal earthquakes result from deformation and mountain building in the overriding South America plate and generate earthquakes as deep as approximately 50 km. Interplate earthquakes occur due to slip along the dipping interface between the Nazca and the South American plates. Interplate earthquakes in this region are frequent and often large, and occur between the depths of approximately 10 and 60 km. Since 1900, numerous magnitude 8 or larger earthquakes have occurred on this subduction zone interface that were followed by devastating tsunamis, including the 1960 M9.5 earthquake in southern Chile, the largest instrumentally recorded earthquake in the world. Other notable shallow tsunami-generating earthquakes include the 1906 M8.5 earthquake near Esmeraldas, Ecuador, the 1922 M8.5 earthquake near Coquimbo, Chile, the 2001 M8.4 Arequipa, Peru earthquake, the 2007 M8.0 earthquake near Pisco, Peru, and the 2010 M8.8 Maule, Chile earthquake located just north of the 1960 event.


USGS plate tectonics for the region.


Large intermediate-depth earthquakes (those occurring between depths of approximately 70 and 300 km) are relatively limited in size and spatial extent in South America, and occur within the Nazca plate as a result of internal deformation within the subducting plate. These earthquakes generally cluster beneath northern Chile and southwestern Bolivia, and to a lesser extent beneath northern Peru and southern Ecuador, with depths between 110 and 130 km. Most of these earthquakes occur adjacent to the bend in the coastline between Peru and Chile. The most recent large intermediate-depth earthquake in this region was the 2005 M7.8 Tarapaca, Chile earthquake.

Earthquakes can also be generated to depths greater than 600 km as a result of continued internal deformation of the subducting Nazca plate. Deep-focus earthquakes in South America are not observed from a depth range of approximately 300 to 500 km. Instead, deep earthquakes in this region occur at depths of 500 to 650 km and are concentrated into two zones: one that runs beneath the Peru-Brazil border and another that extends from central Bolivia to central Argentina. These earthquakes generally do not exhibit large magnitudes. An exception to this was the 1994 Bolivian earthquake in northwestern Bolivia. This M8.2 earthquake occurred at a depth of 631 km, making it the largest deep-focus earthquake instrumentally recorded, and was felt widely throughout South and North America.

Subduction of the Nazca plate is geometrically complex and impacts the geology and seismicity of the western edge of South America. The intermediate-depth regions of the subducting Nazca plate can be segmented into five sections based on their angle of subduction beneath the South America plate. Three segments are characterized by steeply dipping subduction; the other two by near-horizontal subduction. The Nazca plate beneath northern Ecuador, southern Peru to northern Chile, and southern Chile descend into the mantle at angles of 25° to 30°. In contrast, the slab beneath southern Ecuador to central Peru, and under central Chile, is subducting at a shallow angle of approximately 10° or less. In these regions of “flat-slab” subduction, the Nazca plate moves horizontally for several hundred kilometers before continuing its descent into the mantle, and is shadowed by an extended zone of crustal seismicity in the overlying South America plate. Although the South America plate exhibits a chain of active volcanism resulting from the subduction and partial melting of the Nazca oceanic lithosphere along most of the arc, these regions of inferred shallow subduction correlate with an absence of volcanic activity. -

More information on regional seismicity and tectonics


- RT | USGS.





GEOLOGICAL UPHEAVALS: Giant Cracks Open Up In Mexico - New Sinkholes Drain TWO MORE RIVERS In Veracruz! [PHOTOS + VIDEO]

Almost completely dried up…
April 22, 2016 - VERACRUZ, MEXICO - Two rivers in the mountains of the Mexican Gulf state of Veracruz have started to dry up following the appearance of sinkholes, bringing to three the number of rivers in the region that have drained into the subsoil in less than two months, officials said.

Residents and officials said the flow of the Tliapa and Tlacuapa rivers has been reduced by half, with the water streaming into sinkholes.


Before / After. Segments of the River Atoyac are completely dry.


The rivers start in the mountain cities of Chocaman and Calcahualco, and flow into the Seco River in Cordoba, a city in central Veracruz.

Residents of the community of Tecolotla told officials that the first sinkhole formed in a place called Puente de Piedra, where water from one of the rivers began draining into the subsoil. 


WATCH: Major geological upheaval in Veracruz.




 A second sinkhole appeared about one kilometer (0.62 miles) downriver, beyond where the two rivers join, residents said.

"The Tliapa and Tlacuapa rivers have now reduced their flow by up to 50 percent," Tomatlan emergency management chief Tobias Carrillo Morales said. - Latin American Herald Tribune.