2016 Kumamoto earthquakes

As a result of the tremors, the entirety of Kumamoto city was left without water.[29] All residents of Nishihara Village in Kumamoto Prefecture were evacuated over fears that a nearby dam could collapse.[29] Kumamoto Airport was also closed to all but emergency flights, and service on the Kyushu Shinkansen was suspended after a train derailed due to the earthquake.[30] Numerous structures collapsed or caught fire as a result of the earthquake. Government officials estimated more than 1,000 buildings had been seriously damaged, with 90 destroyed.[31] A 500-bed hospital in Kumamoto City was knocked off its foundations, forcing the evacuation of all patients,[17] and a natural gas leak prompted Saibu Gas to turn off supplies to multiple homes in the city.[19]

Numerous landslides took place across the mountains of Kyushu, rendering roads impassable,[25][32] The Great Aso Bridge of the Japan National Route 325 in Minamiaso collapsed into the Kurokawa river.[33] A particularly large rockslide was photographed blocking the entirety of a four-lane express-way close to the fallen Great Aso Bridge, leaving a large scar that ran almost completely up the hill that suffered the rockslide.

The Aso Shrine was also heavily damaged in the earthquake. The shrine's rōmon (tower gate), officially classified as an Important Cultural Property by the Japanese government, and the haiden (worshiping hall) both completely collapsed.[34] Kumamoto Castle, another Important Cultural Property sustained damage to its roof and exterior buildings and walls because of the earthquakes and associated aftershocks.[35] Several of the castle's shachihoko ornaments were destroyed,[36] and a large number of kawara tiles also fell from the roof. Other historical buildings such as Janes' Residence, the first western-style house built in Kumamoto (dating from 1871)[37] were also totally destroyed.[38] The former registered Cultural Asset was initially located in the grounds of Kumamoto Castle, but was later relocated near Suizen-ji Jōju-en.

Early estimates of the economic costs of the damage range from $5.5 billion to $7.5 billion, with insured property losses estimated to be between $800 million to $1.2 billion, according to Risk Management Solutions or between $1.7 billion to $2.9 billion, according to Guy Carpenter.[39] Through the first half of 2016, about $3.2 billion of claims for damage to residential dwellings were paid out by insurance companies, according to data from the General Insurance Association of Japan.[40]

At least nine people lost their lives and approximately 1,000 more were injured by the April 14 foreshock.[17] By April 16, more than 44,000 people were evacuated from the hardest-hit areas.[25] Prime Minister Shinzō Abe mobilized 3,000 personnel of the Japan Self-Defense Forces to assist local authorities with search and rescue and recovery efforts.[25]

At least 273 people were killed and 2,809 others were injured by the mainshock, including many indirectly.[8][41] Kumamoto Prefectural Police got more than 300 calls and also Ōita Prefectural Police took 100 calls, some reporting people trapped or buried under debris.[42] More than 91,700 people were evacuated. An additional 15,000 soldiers from the Japan Self-Defense Forces joined relief efforts following the earthquake.[43] By April 18, the number of people seeking shelter had risen to 180,000, while at least eight people remained missing in a landslide caused by the earthquake.

• 
  The Great Aso Bridge in Minamiaso collapsed into the Kurokawa River due to a landslide
• 
  The north-west Inui Turret and wall of Kumamoto Castle.[44]
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  The ruins of the historic Janes' Residence
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  The damaged Sunlive Kengun in the pedestrian arcade in downtown Kumamoto.

Kumamoto Prefecture lies at the southern end of the Japan Median Tectonic Line, Japan's longest, where a system of active faults forks in two directions at the Beppu-Haneyama Fault Zone.[45] Specifically, the series of quakes ruptured the 81-km-long Hinagu Fault and 64-km-long Futagawa Fault to its north, as well as lesser but discernable interaction with the farther flung Beppu-Haneyama Fault Zone.[46][47] A 27-km section of the Futagawa Fault Zone slid 3.5 meters.[47] The earthquakes are occurring along the Beppu–Shimabara graben,[48] with epicentres moving from west to east over time.[49]

Around 08:30 local time on 16 April, Mount Aso saw a small-scale eruption with ash billowing 100 m (330 ft) into the air; the eruption was not related to the earthquake.[50][51] Mount Aso had already been active since before the earthquakes,[52] being under a Level 2 warning from the JMA since November 24, 2015.[53][54]

• 1889 Kumamoto earthquake
• List of earthquakes in 2016
• List of earthquakes in Japan

Wikimedia Commons has media related to 2016 Kumamoto earthquake.

• The 2016 Kumamoto Earthquake –Portal – Japan Meteorological Agency
• Magnitude 6.2 Earthquake in Japan – United States Geological Survey
• Magnitude 7.0 Earthquake in Japan – United States Geological Survey
• Earthquake and Volcano Information – 15th April, 2016 Earthquake in Kumamoto prefecture – Earthquake Research Institute, University of Tokyo
• The International Seismological Centre has a bibliography and/or authoritative data for this event.