Earthquakes
The figure is more than half of the town's population of 17,000, Japan Broadcasting Corporation NHK announced on Saturday.
On Friday, an 8.9-magnitude earthquake, off the northeastern coast of Japan's main island, unleashed a 23-foot (7-meter) tsunami and was followed by more than 50 aftershocks for hours.
Kyodo News said there were no immediate reports of casualties and no fresh tsunami alert was issued after the quake, which was followed by an almost equally strong quake in the same area half an hour later.
The quakes struck in the west of the main Honshu island, on the Sea of Japan coast and far from the offshore Pacific Ocean tremor that triggered a mammoth tsunami Friday that is feared to have killed more than 1,000 people.
The focus of both predawn quakes was in central Niigata.
The US Geological Survey put the strength at 6.2 and said it hit at a depth of only one kilometre (about half a mile).
Police said they had received reports of a landslide and avalanche in Tokamachi and another avalanche in Tsunan town, Kyodo reported.
The news agency also said wooden buildings including a town hall and a garage had reportedly been destroyed and some highways cracked in the village of Sakae in Nagano prefecture.
The first quake in the inland region struck at 4:00 am Saturday (1900 GMT Friday). The focus was in central Niigata but it also shook neighbouring Nagano, and a third quake later followed in the region.
A massive explosion has struck a Japanese nuclear power plant after Friday's devastating earthquake.
A huge pall of smoke was seen coming from the plant at Fukushima and several workers were injured.
Japanese officials fear a meltdown at one of the plant's reactors after radioactive material was detected outside it.
A huge relief operation is under way after the 8.9-magnitude earthquake and tsunami, which killed more than 600.
Hundreds more people are missing and it is feared about 1,300 may have died.
The offshore earthquake triggered a tsunami which wreaked havoc on Japan's north-east coast, sweeping far inland and devastating a number of towns and villages.

NASA Earth Observatory image created by Robert Simmon and Jesse Allen, using earthquake and plate tectonics data from the USGS Earthquake Hazard Program, land elevation data from the Shuttle Radar Topography Mission (SRTM) provided by the University of Maryland’s Global Land Cover Facility, and ocean bathymetry data from the British Oceanographic Data Center’s Global Bathmetric Chart of the Oceans (GEBCO).
This map shows the location of the March 11 earthquake, as well as the foreshocks (dotted lines) and aftershocks (solid lines). The size of each circle represents the magnitude of the associated quake or shock. The map also includes land elevation data from NASA's Shuttle Radar Topography Mission and ocean bathymetry data from the British Oceanographic Data Center.
According to the U.S. Geological Survey (USGS), the earthquake occurred at a depth of 24.4 kilometers (15.2 miles) beneath the seafloor. The March 11 earthquake was preceded by a series of large foreshocks on March 9, including an M7.2 event. USGS reported that the earthquakes "occurred as a result of thrust faulting on or near the subduction zone interface plate boundary."
Saturday, March 12, 2011 at 01:19:07 UTC
Saturday, March 12, 2011 at 02:19:07 PM at epicenter
Time of Earthquake in other Time Zones
Location:
16.727°S, 173.174°W
Depth:
10.9 km (6.8 miles)
Region:
TONGA
Distances:
106 km (65 miles) SE of Hihifo, Tonga
229 km (142 miles) NNE of Neiafu, Tonga
355 km (220 miles) SSW of APIA, Samoa
2528 km (1570 miles) W of Auckland, New Zealand
INGV's report, which came hours after the devastating incident, is equivalent to "very, very tiny" changes that won't be seen for centuries, though, Canadian geologists say.
Only after centuries would a second be lost as each day is shortened by a millionth of a second, according to University of Toronto geology professor Andrew Miall.
"Ten inches sounds like quite a lot when you hold a ruler in front of you. But if you think of it in terms of the earth as a whole, it's absolutely tiny; it's minute," he said.
"It's going to make minute changes to the length of a day. It could make very, very tiny changes to the tilt of the earth, which affects the seasons, but these effects are so small, it'd take very precise satellite navigation to pick it up."
Meteorologist Kevin Martin is the lead scientist here at TheWeatherSpace.com and explains in his own way what may actually be happening.
"Waves from the Earthquake have been ringing the planet like bell, causing stress in all sections of the planet", Martin said. "Imagine a calm magma chamber that just needs one push, even if a few feet. This would be enough to cause instability in the chambers, causing volcanic eruptions in various locations. These three eruptions will not be the only mountains to go and other quakes worldwide will follow as the worldwide faults get disturbed.
A massive 8.8 magnitude earthquake has hit the northeast coast of Japan and triggered a tsunami warning across the Pacific Ocean.
There have been several strong aftershocks and a ten-metre tsunami following the quake, which also caused buildings to shake violently in the capital Tokyo.
Japanese media have reported at least 32 deaths and many injuries, with fires breaking out from Sendai city in northern Japan to Tokyo.
Two people have reportedly been killed by a collapsing ceiling at a Honda factory in Tochigi.
There are major fires at an oil refinery and steel plant in Chiba, east of Tokyo. Dozens of storage tanks are under threat at the refinery.
A series of massive earthquakes have struck north-east Japan, unleashing a 10-metre tsunami that swept buildings, vehicles, crops and debris across swaths of farmland.
The first 8.9 magnitude shock is said to be the biggest to have hit Japan in 140 years, rocking buildings 235 miles (380km) away in Tokyo and sparking fires.
At least five people are known to have died, but amid widespread reports of landslides, floods, collapsed buildings and fires the death toll is expected to rise.
The quake hit at 2.46pm (5.45am GMT), about 6 miles below sea level and 78 miles off the east coast. It was swiftly followed by five powerful aftershocks of up to 7.1 magnitude.










Comment: The Guardian has released this footage of Japanese MPs in session when the earthquake struck: