Related topics: japan · quake · earthquake · nuclear power plant · fukushima

Precursors of a catastrophic collapse

On the morning of the 13th of March 1888, the inhabitants of the Finschhafen trading post on the east coast of New Guinea were awakened by a dull rumbling sound. An eyewitness later reported that the water in the port had ...

Strong 6.1 magnitude earthquake hits Panama: USGS

A 6.1 magnitude earthquake hit Panama on Sunday near the border with Costa Rica, the US Geological Survey said, but there were no immediate reports of damage or casualties.

Salish seafloor mapping identifies earthquake and tsunami risks

The central Salish Sea of the Pacific Northwest is bounded by two active fault zones that could trigger rockfalls and slumps of sediment that might lead to tsunamis, according to a presentation at the 2019 SSA Annual Meeting.

Q&A: Designing a better local tsunami warning system

On a Friday afternoon in the spring of 2011, the Tōhoku-Oki earthquake shook northeastern Japan for six minutes and shifted the country's main island by 8 feet. Minutes later, residents began receiving tsunami warnings through ...

Major tsunami struck southern China in 1076, say scientists

A major tsunami struck China's southern coast in 1076 causing "drastic cultural decline", Chinese researchers say, in a study with implications for a densely populated region boasting multiple coastal nuclear power plants.

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A tsunami (津波?) (pronounced /(t)suːˈnɑːmi/) is a series of water waves (called a tsunami wave train) that is caused when a large volume of a body of water, such as an ocean, is rapidly displaced. The Japanese term is literally translated into "harbor wave."

Earthquakes, volcanic eruptions and other underwater explosions (detonations of nuclear devices at sea), landslides and other mass movements, bolide impacts, and other disturbances above or below water all have the potential to generate a tsunami. Due to the immense volumes of water and energy involved, the effects of tsunamis can be devastating.

The Greek historian Thucydides was the first to relate tsunami to submarine quakes, but understanding of the nature of tsunami remained slim until the 20th century and is the subject of ongoing research.

Many early geological, geographical, and oceanographic texts refer to tsunamis as "seismic sea waves."

Some meteorological conditions, such as deep depressions that cause tropical cyclones, can generate a storm surge, called a meteotsunami, which can be several metres above normal tide levels. This is due to the low atmospheric pressure within the centre of the depression. As these storm surges come ashore, they may resemble (though are not) tsunamis, inundating vast areas of land. Such a storm surge inundated Burma (Myanmar) in May 2008.

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