The 2010 Haiti earthquake

The 2010 Haiti earthquake was a catastrophic magnitude 7.0 Mw earthquake, with an epicenter near the town of Léogâne (Ouest Department), approximately 25 kilometres (16 mi) west of Port-au-Prince, Haiti's capital. The earthquake occurred at 16:53 local time (21:53 UTC) on Tuesday, 12 January 2010.

By 24 January, at least 52 aftershocks measuring 4.5 or greater had been recorded. An estimated three million people were affected by the quake. Death toll estimates range from 100,000 to about 160,000 to Haitian government figures from 220,000 to 316,000 that have been widely characterized as deliberately inflated by the Haitian government. The government of Haiti estimated that 250,000 residences and 30,000 commercial buildings had collapsed or were severely damaged. There has been a history of national debt, prejudicial trade policies by other countries,[citation needed] and foreign intervention into national affairs that contributed to the pre-existing poverty and poor housing conditions that exacerbated the death toll.

The earthquake caused major damage in Port-au-Prince, Jacmel and other settlements in the region. Notable landmark buildings were significantly damaged or destroyed, including the Presidential Palace, the National Assembly building, the Port-au-Prince Cathedral, and the main jail. Among those killed were Archbishop of Port-au-Prince Joseph Serge Miot, and opposition leader Micha Gaillard. The headquarters of the United Nations Stabilization Mission in Haiti (MINUSTAH), located in the capital, collapsed, killing many, including the Mission's Chief, Hédi Annabi.

Many countries responded to appeals for humanitarian aid, pledging funds and dispatching rescue and medical teams, engineers and support personnel. Communication systems, air, land, and sea transport facilities, hospitals, and electrical networks had been damaged by the earthquake, which hampered rescue and aid efforts; confusion over who was in charge, air traffic congestion, and problems with prioritisation of flights further complicated early relief work. Port-au-Prince's morgues were overwhelmed with tens of thousands of bodies. These had to be buried in mass graves. As rescues tailed off, supplies, medical care and sanitation became priorities. Delays in aid distribution led to angry appeals from aid workers and survivors, and looting and sporadic violence were observed. On 22 January the United Nations noted that the emergency phase of the relief operation was drawing to a close, and on the following day the Haitian government officially called off the search for survivors.

Aftershocks

History of the main shock and aftershocks with magnitudes larger than 4.0, data from USGS

The United States Geological Survey (USGS) recorded eight aftershocks in the two hours after the main earthquake, with magnitudes between 4.3 and 5.9. Within the first nine hours 32 aftershocks of magnitude 4.2 or greater were recorded, 12 of which measured magnitude 5.0 or greater, and on 24 January USGS reported that there had been 52 aftershocks measuring 4.5 or greater since 12 January quake.

On 20 January at 06:03 local time  the strongest aftershock since the earthquake, measuring magnitude 5.9 Mw, struck Haiti. USGS reported its epicenter was about 56 km (35 mi) WSW of Port-au-Prince,which would place it almost exactly under the coastal town of Petit-Goâve. A UN representative reported that the aftershock collapsed seven buildings in the town. According to staff of the International Committee of the Red Cross, which had reached Petit-Goâve for the first time the day before the aftershock, the town was estimated to have lost 15 percent of its buildings, and was suffering the same shortages of supplies and medical care as the capital. Workers from the charity Save the Children reported hearing "already weakened structures collapsing" in Port-au-Prince, but most sources reported no further significant damage to infrastructure in the city. Further casualties are thought to have been minimal since people had been sleeping in the open.There are concerns that 12 January earthquake could be the beginning of a new long-term sequence: "the whole region is fearful"; historical accounts, although not precise, suggest that there has been a sequence of quakes progressing westwards along the fault, starting with an earthquake in the Dominican Republic in 1751.

Tsunami

The Pacific Tsunami Warning Center issued a tsunami warning immediately after the initial quake, but quickly cancelled it. Nearly two weeks later it was reported that the beach of the small fishing town of Petit Paradis was hit by a localised tsunami shortly after the earthquake, probably as a result of an underwater slide, and this was later confirmed by researchers. At least three people were swept out to sea by the wave and were reported dead. Witnesses told reporters that the sea first retreated and a "very big wave" followed rapidly, crashing ashore and sweeping boats and debris into the ocean.

The earthquake struck in the most populated area of the country. The International Federation of Red Cross and Red Crescent Societies estimated that as many as 3 million people had been affected by the quake. In mid February 2010, the Haitian government reported the death toll to have reached 230,000. However, an investigation by Radio Netherlands has questioned the official death toll, reporting an estimate of 92,000 deaths as being a more realistic figure. On the first anniversary of the earthquake, 12 January 2011, Haitian Prime Minister Jean-Max Bellerive said the death toll from the quake was more than 316,000, raising the figures from previous estimates.

Several experts have questioned the validity of the death toll numbers; Anthony Penna, professor emeritus in environmental history at Northeastern University, warned that casualty estimates could only be a "guesstimate", and Belgian disaster response expert Claude de Ville de Goyet noted that "round numbers are a sure sign that nobody knows."Edmond Mulet, UN Assistant Secretary-General for Peacekeeping Operations, said, "I do not think we will ever know what the death toll is from this earthquake", while the director of the Haitian Red Cross, Jean-Pierre Guiteau, noted that his organization had not had the time to count bodies, as their focus had been on the treatment of survivors