Teachers Without Borders

Aid group World Vision has weighed in on the differences between the earthquakes in Haiti and Chile.

“Haiti was concentrated and that led to the challenge of tons of aid and hundreds of aid workers being sent into a small zone,” he said. “This quake off the Chilean coast has potential to reach remote areas and thus it will be extremely difficult to assess the number of deaths and amount of damage, but we can expect that children and families will have taken the brunt of it.”

Fifty years ago, the strongest earthquake ever recorded in history rocked the city of Valdivia, Chile. On May 22, 1960, the 9.5 magnitude earthquake struck the epicenter near the city of Cañete. However, Valdivia was the hardest hit locality with nearly 40% of its building destroyed and leaving close to 20,000 homeless.

From the city of Valdivia, Betsabé Sandoval (@_Nahra) has been uploading various vintage photos at Twitpic of the destruction from the 1960 earthquake, including this photo of the damage to the Valdivia Cathedral. In total, she has uploaded 10 different photographs.

There are many Twitter users who currently live in the city of Valdivia. Throughout the day, they have been reacting to the developments of the 2010 earthquake and how their fellow residents were affected. The Twitter user @tapeks writes about the current mood of the city: Se ve el temor en la gente, todos andan intranquilos y las calles se ven desoladas, se ve tan raro #Valdivia You can see the fear in the people, everyone walks around restless, the streets are desolate, it looks unusual

Quakes are commonplace in Chile; since 1906 and counting this most recent earthquake, Chile has experienced 28 earthquakes [es]—without counting the smaller in magnitude but still frequent seismic activity that is often felt around the country. The three biggest earthquakes that many Chileans can still remember left 30,000 dead in 1939, 3,000 in 1960, and 177 in 1985.

The Chilean government, society, and people should be praised for their readiness in dealing with such a catastrophic natural disaster…as of this writing, Chile has still not appealed for international help even though the death toll has topped 300.

I was impressed with the buildings since most of them where built under strict codes to remain standing during seismic movements. Chileans say that every decade there was a strong earthquake that left the city “la escoba” (like a broom) . That means, the earthquakes turned cities into disaster zones.

With more than a million people taking refuge in temporary shelters, they are at greater risk of violence, including sexual and gender-based violence, Sidibé said. "Programmes are urgently needed to reduce vulnerabilities to HIV and ensure protection."

As Haiti experiences a critical interruption of HIV services and programmes, stepped up support is vital for the country to allow it to regain momentum towards reaching universal access goals for HIV prevention, treatment, care and support.

Haiti’s annual AIDS budget was $132 million prior to the earthquake, and UNAIDS believes that a further $70 million will be necessary to meet the country’s immediate response needs over the next six months.The UN Office for the Co-ordination of Humanitarian Affairs (OCHA) reported that about 285 000 houses had been damaged or destroyed in the earthquake, and government and humanitarian organisations, as well as engineers, are working to register the displaced and plan relocation sites for those who cannot return to their homes.

Water has been identified as a top priority for aid to Haiti as it struggles to recover. The consequences of not having access to water extend beyond dehydration. Thirst drives people to water sources they would not have considered before - sources contaminated with human waste, garbage, and industrial byproducts. Using this water leads to diseases like cholera and dysentery, which spread rapidly through communities. Aid efforts must place a priority on bringing safe water to Haiti as soon as possible if the country is to quickly move beyond the immediate crisis to long-term recovery efforts.

Providing water to Haiti has been troublesome for decades. According to the World Health Organization, only 58% of Haitians had sustainable access to clean water in 2006.

Steve Solomon, author of Water: The Epic Struggle for Wealth, Power and Civilization, suggests in a New York Times editorial that Haiti focus on local water networks with flexible piping that can be buried and repaired easily.

It is not possible to predict the time and magnitude of an earthquake, but certain places on the Earth know they are always at risk from big tremors. Chile is one of those places.It lies on the "Ring of Fire", the line of frequent quakes and volcanic eruptions that circles virtually the entire Pacific rim. The magnitude 8.8 event that struck the country at 0634GMT on Saturday occurred at the boundary between the Nazca and South American tectonic plates, just off shore and at a depth of about 35km (20 miles).

The Nazca plate, which makes up the Pacific Ocean floor in this region, is being pulled down and under the South American coast. It makes the region one of the most seismically active on the globe. Since 1973, there have been 13 events of magnitude 7.0 or greater.

French and Chilean seismologists had recently completed a study looking at the way the land was moving in response to the strain building up as a result of the tectonic collision. Their analysis suggested the area was ripe for a big quake. "This earthquake fills in an identified seismic gap," Dr Roger Musson, who is the British Geological Survey's Head of Seismic Hazard, told BBC News.

Two million people have been affected by the massive earthquake that struck central Chile on Saturday, President Michelle Bachelet has said.

The 8.8 quake - one of the biggest ever - triggered a tsunami that has been sweeping across the Pacific, although waves were not as high as predicted.

Chile is vulnerable to earthquakes, being situated on the Pacific "Ring of Fire" where the Pacific and South American plates meet. The earthquake struck at 0634 GMT, 115km (70 miles) north-east of the city of Concepcion and 325km south-west of the capital Santiago at a depth of about 35km. It is the biggest to hit Chile in 50 years.

More than 1.5 million people have displaced by the quake, according to local news services that quoted the director of Chile's emergency management office. In Concepción, which appeared to be especially hard hit, the mayor said Sunday morning that 100 people were trapped under the rubble of a building that had collapsed, according to Reuters.

While this earthquake was far stronger than the 7.0-magnitude one that ravaged Haiti six weeks ago, the damage and death toll in Chile are likely to be far less extensive, in part because of strict building codes put in place after devastating earthquakes.

Chileans were only just beginning to grapple with the devastation before them, even as more than two dozen significant aftershocks struck the country.