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Another Large Quake Rattles Tokyo

A 6.0-magnitude earthquake struck Tuesday night, but no new damage was reported to nuclear facilities.

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Another Large Quake Rattles Tokyo

Special Report: Fukushima and the Future of Nuclear Power

Editor's Note: This is part of IEEE Spectrum's ongoing coverage of Japan's earthquake and nuclear emergency.

A 6.0-magnitude earthquake struck Shizuoka Prefecture southwest of Tokyo around 10:30 Tuesday night, Japan local time. The quake rocked buildings for about 10 seconds in the Tokyo area. Shinkansen bullet trains in the Shizuoka area have stopped running.

According to NHK, Japan's national broadcaster, Chubu Electric Company is reporting that its Hamaoka Nuclear Power Plant has not been unduly affected and the plant did not go into emergency shutdown. However, the power company is reporting that many of its electric utility poles have been knocked over.

The Japan Meteorological Agency said that while there may be slight increases in sea levels, there is no risk of a tsunami or significant tidal damage.

There have been hundreds of aftershocks following the devastating 9.0-magnitude earthquake last Friday. The Meteorological Agency notes that there have been 45 aftershocks with a magnitude of 6.0 or greater.

Image: Japan Meteorological Agency

John Boyd is an IEEE Spectrum contributor reporting from Kawasaki, Japan. This is part of IEEE Spectrum's ongoing coverage of Japan's earthquake and nuclear emergency.

The Conversation (0)
This photograph shows a car with the words “We Drive Solar” on the door, connected to a charging station. A windmill can be seen in the background.

The Dutch city of Utrecht is embracing vehicle-to-grid technology, an example of which is shown here—an EV connected to a bidirectional charger. The historic Rijn en Zon windmill provides a fitting background for this scene.

We Drive Solar

Hundreds of charging stations for electric vehicles dot Utrecht’s urban landscape in the Netherlands like little electric mushrooms. Unlike those you may have grown accustomed to seeing, many of these stations don’t just charge electric cars—they can also send power from vehicle batteries to the local utility grid for use by homes and businesses.

Debates over the feasibility and value of such vehicle-to-grid technology go back decades. Those arguments are not yet settled. But big automakers like Volkswagen, Nissan, and Hyundai have moved to produce the kinds of cars that can use such bidirectional chargers—alongside similar vehicle-to-home technology, whereby your car can power your house, say, during a blackout, as promoted by Ford with its new F-150 Lightning. Given the rapid uptake of electric vehicles, many people are thinking hard about how to make the best use of all that rolling battery power.

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