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专家:两个疑似MH370黑匣子信号应“来自不同设备”

2014-04-09 11:28:01   中国新闻网

近日,中国“海巡-01”号和澳大利亚“海盾”号都监测到了与马航失联客机MH370黑匣子所发信号频率一致的脉冲信号。中国科学院声学研究所研究员、蛟龙号副总设计师朱敏在今晚举行的第40期科学家与媒体面对面活动上表示,这两个信号“不可能是同一个设备发出来的信号”,但给出了两个下一步搜索优先考虑的区域。

朱敏表示,在大海这样一个大范围的区域里搜索,主要还是要靠声学。“这次我国'海巡01'探测到的信号如果被证实的话,那可以说是比较幸运的。”因为信标的可探测距离只有4000多米,而这个海区是4500米深度的海区,测量贴近于海表面,噪声比较大,“是非常临界的状态,能探测到是非常不容易的。而澳大利亚“海盾”号使用的拖曳式系统,既拉近了与海底的距离,同时还可以避开船和海面噪声源,“所以效果会好一些。”

“当然这次能够探测到疑似信号应该说也是非常有价值的信息。两条船找到的距离差得很远,我们分析,这不可能是同一个设备发出来的信号。因为这么远的距离,37.5千赫的信号无论如何是传不到另外一个地方去的。” 朱敏表示,“至于说哪个是黑匣子的信号,现在不好说。给出两个区域,可以做为下一步搜索优先考虑的区域。” (赵竹青)

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