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地震历史上的今天:洛马·普列塔1989

类别:地震历史上的今天|海湾地区|圣安德烈亚斯断层|地震断层和断层

2009年10月16日(1989年10月17日地震)

地震学家在自然界中观察到地震波的情况并不常见。当然,我们都坐在电脑屏幕前,看着地震仪产生的波形的数字表示。事实上,地震仪的质量随波的节奏摆动。但这些地震记录远非真实。这位博客在20年前的今天看到了一波地震波,当时洛马·普列塔地震撼动了旧金山湾区。我记得那是一个温和的下午。每个人都很兴奋,因为运动家队和巨人队已经在烛台公园(当时的名字)排队等候参加1989年世界职业棒球大赛的第三场比赛。我在车里,接儿子参加放学后的活动,送女儿去练足球。我们把车停在她学校的停车场时,汽车突然开始隆隆作响,然后摇晃起来。我想我的儿子在后座上跳上跳下,渴望回家看电视上的比赛。 But when I looked in the rear view mirror, I saw him sitting there quietly, staring awestruck out the window. When I looked in the same direction, I saw the asphalt in the parking lot swell and heave as though a giant gopher were digging through the earth at lightning speed. The wave in the asphalt was rapidly moving in our direction; it swayed the car up and down and within a few seconds - it was gone. I think the wave's crest was a few inches high, but everything went so fast that my recollection is somewhat blurred.

洛马·普列塔地震。

1989年洛马·普列塔地震的震动强度图。的新见解。(点击查看大图)

那是地震波,我兴奋地告诉儿子。这可能是一生中唯一一次真正看到一个人来来往往,我微笑着看着他。但他毫不在意,冷冷地问我为什么把汽车上的收音机关掉了。我知道我没有,但确实,那里没有声音。那一刻我意识到一定发生了什么大事。我车上的收音机还开着,但电台已经停播了。我的思绪开始急促起来:如果我真的能从停车场的地震中看到地震波,那么震动一定非常严重。我的家人还安全吗?我的房子还好吗?我们抓住女儿开车回家,发现每个人都在发抖,但都安然无恙。 Then, ever so slowly, the news about the destruction at various locations in the Bay Area began to trickle in. The rest, of course, is history. The quake had a magnitude of 6.9, a total of 63 people were killed, and more than 3700 were injured. Its hypocenter lay along the San Andreas Fault in the Santa Cruz Mountains near the Loma Prieta summit, 11 miles beneath the surface. The Cypress structure of the 880 freeway in Oakland had collapsed, parts of the Marina District were burning, one section of the upper deck of the Bay Bridge had fallen onto the lower deck, and there was widespread damage in Watsonville and Santa Cruz.

这些都是可怕的事实,但在某种程度上对博主来说只是统计数据。他记忆犹新的是停车场里的海浪。我相信,在20年前那个命运攸关的10月下午,其他人肯定也有过类似的经历。请告诉博主你对湾区1906年以来最大地震的记忆。发送电子邮件到页面顶部的“联系”或写信给我们“blogger@www.southendgc.com”。(hra046)