Detailed analyses of satellite images and field investigation have revealed that the active Kaidu River fault zone on the southern margin of the basin is a strike-slip fault zone.

详细的卫星图像分析和野外调查表明活动断层(开都河断层带)主要分布在盆地的南缘，具典型的走滑断层特征。

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But at the time of the strike, the vehicles had apparently become stuck in a river bed.

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The RQ-4A Global Hawk drone crashed during a routine training flight from Naval Air Station Patuxent River, according to Jamie Cosgrove, a spokeswoman for the Unmanned Aviation and Strike Weapons Program at the base.

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