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It's still early days for QuakeFinder,
震動(dòng)探測(cè)儀還處于早期階段
but it may have already had a minor breakthrough.
但它也許已取得零的突破
In October 2007,
07年10月
the little white boxes picked up electromagnetic signals
在阿藍(lán)巖發(fā)生地震前不久 這些儀器
shortly before an earthquake struck Alum Rock.
接收到該地區(qū)的電磁信號(hào)
A small community south of San Francisco.
那是一個(gè)位于舊金山南部的小鎮(zhèn)
This is the, er, the actual data from the,
如果你感興趣的話
er, Alum Rock earthquake, if you're interested in that,
這些都是阿藍(lán)巖地震的歷史數(shù)據(jù)
these are the days prior to the earthquake,
從這里我們可以看到在地震之前
so the, er, magnetic pulsations that we see are very,
磁脈動(dòng)的變化不大
very few and far between,
波動(dòng)很小
this large one here is a calibration signal
這個(gè)大幅度波動(dòng)是我們手動(dòng)
that we generated ourselves
生成的校準(zhǔn)信號(hào)
just to make sure everything was working ok.
是為了檢測(cè)儀器是否正常運(yùn)作
About two weeks before the earthquake,
大概在地震前兩周
we started to get these very large pulsations,
我們監(jiān)測(cè)到振幅很大的磁脈動(dòng)
the next few days, it got busier and busier,
在接下來(lái)的幾天 波動(dòng)漸趨頻密
it spread out over more of the day,
每天的波動(dòng)分布更為頻繁
until finally, right there, the earthquake hit.
直到地震發(fā)生
But was there a moment, Tom, when this data was, you know,
湯姆 當(dāng)來(lái)自阿藍(lán)巖的數(shù)據(jù)不斷增多
more and more data's coming in from Alum Rock,
你是否曾有一刻想到
were you thinking, "Crikey, this must be an earthquake?"
"唉呀 這次準(zhǔn)是地震"
I'll be honest with you, no.
坦白說(shuō) 沒(méi)有
Because we're still trying to discover what the pattern is,
因?yàn)槲覀內(nèi)灾铝τ谡页龅卣鸬哪Ｊ?/div>
we're not quite sure how many days it should be there.
所以并不確定地震發(fā)生的時(shí)間
This was, we didn't know if it was a large earthquake
也就是說(shuō)我們不知道將會(huì)發(fā)生
or a small earthquake, all we knew was that
多大規(guī)模的地震 我們只知道
it was only happening at that one station,
某一地區(qū)將會(huì)發(fā)生地震
not at any of the other stations.
而不是其他地區(qū)
