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第五章 北纬四十度死线

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经过长达九年的艰苦探索,我国广大地震工作者研究了许多预报地震的办法。有人研究历史上关于地震的前兆和防震的记载,有人根据古代地震资料用数理统计方法研究地震发生的几率,有人从声、光、电、磁、水文、潮汐、地质、地壳变动、气候乃到天体运行等等来研究与地震的关系。通过这一切,地震工作者早就把目光盯向了辽南。1970年1月,辽南被圈定为重点监测地区。一次次排查,一次次不休不眠的监测,终于找到了地下恶魔所垂涎的目标。1975年2月4日,国家地震局发布地震预报,辽南一百多万人紧急撤离。仅仅是两个半小时后,七点三级强烈地震轰然袭向海城。在六个市、十个县的小范围内,城镇房屋毁坏五百零八平方米,农村房屋毁坏八十六万七千间,却仅有一千三百二十八人死亡,占全地区人口的万分之一点六。这还是世界历史上首次成功预测七级以上大地震,很多国家称这次预报为“科学的奇迹”。不过,这个奇迹并不能全部归功于地震工作者,他们并不是神,只能定下长期、中期的预报。他们的工作当然是卓越的,但对于救灾而言,仅仅有长期、中期预报还是毫无用处。他们确实是正确的,但是他们预见到的地震也许三四年后都不会发生,也许今晚就天崩地裂一般向你袭来。很少有专家敢于报大震,这是因为地底下那头恶魔的脾气难以捉摸,如果贸然作为定论发布出去,很有可能被人们当成有事没事都爱叫“狼来了”的孩子,等到狼真的来了,反而没有人相信了。这份荣耀,至少一半归功于群众。

不为别的,正是群测群防收集了大量的地震前兆现象,经专家分析汇总,才使得国家地震局敢于判断地震就在眼前,才敢做出临震预报。这就是国家制订的“专群结合”的方针政策,事实证明,这一政策是无比正确的。

可是,这一次,群测群防的基础被破坏了。地震局在震前的中、长期预测都是正确的,就是忘记了发动群众。地震局局长被政治运动搞得焦头烂额,他的工作失职了。在这一年,唐山工人工作照做,农民照样种田,该年夏粮还获得了丰收,工业出现小幅增长,就是没有人留意到大自然所发生的种种异常。宝贵的经验就这样被放弃了。

局长大人对群测群防到底是持什么样的态度?是支持还是破坏?相关文件还安安静静的封存在档案柜里,无人翻动。这恐怕只能是一个谜了。现在这位局长大人烦躁不已——手下一名年轻的地震工作者又来向他报告说哪个站监测到了异常,一场大地

震迫在眉睫。这时他想起了东北军区那位年轻的大校给他写来的信,信中明确指出在今天很可能会发生一场毁灭性的地震,请他做好相关工作,疏散群众。对这封信他是一百二十个不服气,你一个丘八都能预测地震了,还要我这个地震局干什么?见鬼了,什么时候连军队都可以插手地震局的工作了?还嫌这个摊子不够乱么?

那名年轻人焦急的说:“六个站都监测到地震爆发的前兆,这个······”

局长说:“在大地震发生前应该有几次小地震的,到目前为止都没有接到这方面的报告,不会是监测站出错了吧?”

年轻人迟疑了一下,鼓足勇气说:“万一是先发生强震再发生低强度余震呢?”

局长愣了一下,说:“这倒是第一次听说······至少在历史上从来没有发生过这样的地震······让各监测站继续观察,一有异常马上上报。”

年轻人没有再坚持。唐山是工业城市,这里有着整个国家百分之一的工业产值,非同小可。地震警报发出去,百万人口大疏散,那可是惊天动地的大事,万一真像局长说的那样预测失误,将造成极其严重的社会影响,这个责任可就大了。

此后的大半生中,他都为自己在这几个小时中的软弱和犹豫悔恨交加,认为自己是国家的罪人。

三个小时后,唐山上空闪过几次蓝色电光。

地震预报彻底失败了。

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