The DEM is used in the focus zone, and the finite difference method is used in the surrounding zone.

在中心区域采用离散元分析，其周围区域采用有限差分法分析。

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In addition, both regions reside within the Ring of Fire, which is a zone surrounding the Pacific Ocean where the Pacific tectonic plate and other plates dive beneath other slabs of Earth.

此外，两个地区都驻留在火山圈内，那是环绕太平洋的一个区域。在那里太平洋地壳构造板块和其它板块潜于其它地球板块之下。

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The earthquake reduced much of L’Aquila’s medieval centre to rubble and flattened surrounding villages, leaving the region, north-east of Rome, looking like a war zone.

地震将拉奎拉的中世纪中心震成一片碎石，还夷平了周边村落，使罗马东北的拉奎拉地区看起来更像战区。

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Authorities are taking no chances. Although they have announced there will be no red zone, an alcohol ban will come into force starting Tuesday in the center of Rome and the area surrounding the stadium.

VOA: standard.2009.05.26

Instead, the biggest sharks identify a location from which to strike, and then search the surrounding killing zone for their next victim.

BBC: Earth News - Great whites 'plan' seal attacks

In 2010, thousands of residents moved to temporary shelters when the volcano ejected ash in an 8-kilometer (5-mile) zone surrounding the crater.

NPR: Philippine Volcano Spews Rocks, Killing 5 Climbers

The 20-kilometer (12.5 miles) evacuation zone surrounding the Fukushima Daiichi (FDI) nuclear power plant will be expanded, Japanese government officials announced today.

FORBES: Japan Nuclear Update: Evacuation Zone Expands, New Photos of Tsunami Hitting Plant