It was the earthquake warning alarms of the passengers' cellphones indicating that another temblor was imminent.

那是发自乘客们手机上的地震警报，预示着下一场地震正在临近。

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The development and deployment of earthquake warning system have been paid more attention to recently, in which the seismic switch is a key tool.

地震报警系统的开发与部署已受到广泛的关注，地震开关是其中关键的技术手段。

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At the end of the article, several questions that still need seriously to be studied before putting forecast of earthquake warning level in practice.

最后提出了一些实施地震预警等级预报前仍需认真研究的问题。

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The country has one of the best earthquake early warning systems in the world.

VOA: special.2011.03.21

The Pacific Tsunami Warning Center watches for earthquake activity that could cause tsunamis.

VOA: special.2009.03.17

The Sun, another Hong Kong newspaper, accuses the State Seismological Bureau of failing to give advance warning of the earthquake.

BBC: China media: Quake response

More to the point, it is possible that some of this power might be released before a fault moves catastrophically, and thus provide some warning of an earthquake.

ECONOMIST: Predicting earthquakes

During the symposium, it showed footage broadcast at the time of the tsunami, from the moment when coverage of a session of parliament was interrupted by the announcement of the earthquake to the first tsunami warning four minutes later and calls to viewers in affected areas to evacuate to higher ground.

UNESCO: Building the Wealth of Nations