Breaking News: Brontide

“Very shallow” earthquake has been happening 10 times since 7PM tonight.

The earthquake which set fire on reactor 4 is suspected to be an underground hydrovolcanic explosion.

Here is the tweet of a Fukushima citizen.

Question-
Did you hear something before the earthquake came ?

Answer-
noukanomuko 農家の婿
大きさ・・・ 例えば海、最初は遠くでさざ波の音が聞こえる感じ。それが段々近づいてきて波の音になるくらいの感覚です。鳴りだした瞬間わかりますよ、ああ地鳴りだって。いきなりですから

It sounded like wave in the sea. At first,it sounded far. and it came slowly,and finally became as loud as the wave.(It was very long)

I recognized it to be a brontide from the very beginning. It sounds so different from our everyday noise.

At latitude 37.1 north and longitude 140.8 east (Fukushima) ,there has been 10 earthquakes since 7PM tonight.

19:05
At latitude 37.1 north and longitude 140.8 east
Shallow,M5.6

19:08
At latitude 37.1 north and longitude 140.8 east
Shallow,M2.0

19:13
At latitude 37.1 north and longitude 140.8 east
10km deep,M2.9

19:40
At latitude 37.1 north and longitude 140.8 east
10km deep,M2.8

20:03
At latitude 37.1 north and longitude 140.8 east
Shallow,M3.7

20:37
At latitude 37.1 north and longitude 140.9 east
10km deep,M3.0

21:29
At latitude 37.1 north and longitude 140.9 east
10km deep,M3.7

21:54
At latitude 37.1 north and longitude 140.8 east
10km deep,M2.9

22:41
At latitude 37.1 north and longitude 140.8 east
Shallow,M3.3

22:41
At latitude 37.1 north and longitude 140.8 east
Shallow,M3.3

There was no “earthquake” in the other places.

mrhy2 はゆ太
まじでさ、地震やばいって、ずっと地鳴りなってんの

“well,it’s serious. still I hear brontide.”

so far,radiation level is not spiking up at so many places.
I think that’s because the fire is still outside of the building.

To me,the actual threat is the finally starting hydrovolcanic explosion underground.
Now nobody can stop it anymore.

(Nika here: Brontide (′brän′tīdz) is a name for a long low rumble heard with thunder or when there is an earthquake – here is a reference link)

(“The 2005 Dec. 26 earthquake that devastated parts of Asia was recorded by microphones at the island of Diego Garcia. The recording of the quake has been made available by scientists at Columbia University.

The scientists used the recording to follow the earthquake’s path. They discovered that it occurred in two phases, moving south to north.

The scientists’ methods may one day result in faster warnings as earthquakes occur. They also could help with relief. The noise studies could show exactly where ruptures have occurred, helping to pinpoint areas that have suffered damage.”

Learn more and listen to the recording at the page for the Lamont-Doherty Earth Observatory – Earth Institute at Columbia University.

Click here to hear an mp3 example of a brontide – )

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