Thumping great earthquake in Chile

Post by **spot** » Thu Sep 17, 2015 12:21 am

The first report said it was magnitude 8, they don't happen often. Just off the coast, but that doesn't mean nobody got hurt. I'll go and look at a news.

Post by **spot** » Thu Sep 17, 2015 12:23 am

There it is...one million residents have been evacuated from coastal areas. There were reports of panic in some cities.

Strong Chile earthquake sets off tsunami waves - BBC News

Post by **LarsMac** » Thu Sep 17, 2015 10:26 am

There have been some fairly significant aftershock in the area, as well. And at around fifty km, all of this is relatively shallow.

Post by **spot** » Fri Sep 18, 2015 12:06 am

Photos of coastal boats pushed onto foreshore housing, and a state of emergency declared.

Chile quake: State of emergency declared for Coquimbo - BBC News

Saint_ · Post by **Saint_** » Fri Sep 18, 2015 6:43 am

Weirdness: I taught logarithms that same day and my classroom examples of a logarithmic scale? The Richter Scale..

Post by **spot** » Fri Sep 18, 2015 7:39 am

To what extent do you distinguish between natural and Base 10 logarithms when you do that?

Saint_ · Post by **Saint_** » Fri Sep 18, 2015 9:38 am

spot;1486380 wrote: To what extent do you distinguish between natural and Base 10 logarithms when you do that?

We call all base ten logs "natural logs" and we don't write the base if it is 10. For example: log 1000 = 3. Do you use a different definition?

Post by **spot** » Fri Sep 18, 2015 10:01 am

Saint_;1486393 wrote: We call all base ten logs "natural logs" and we don't write the base if it is 10. For example: log 1000 = 3. Do you use a different definition?

It's a technical term - Demystifying the Natural Logarithm (ln) | BetterExplained is helpful.

FourPart · Post by **FourPart** » Fri Sep 18, 2015 5:30 pm

This one was freaky. First of all - probably initiated by subconciously hearing the news report on the radio, I was dreaming about being in an earthquake in my tower block. Then, a few seconds after I woke up I heard the presenter on Five Live reading an old forum posting of mine from a couple of years back (possibly on here), regarding tower blocks in Japan having been made earthquake resistant by means of putting long, free hanging iron rods down the middle of them - the quote was even attributed with my name. I know the obvious thought would have been that I was still dreaming, but I was definitely awake by then.

Smaug · Post by **Smaug** » Fri Sep 18, 2015 5:37 pm

FourPart;1486443 wrote: This one was freaky. First of all - probably initiated by subconciously hearing the news report on the radio, I was dreaming about being in an earthquake in my tower block. Then, a few seconds after I woke up I heard the presenter on Five Live reading an old forum posting of mine from a couple of years back (possibly on here), regarding tower blocks in Japan having been made earthquake resistant by means of putting long, free hanging iron rods down the middle of them - the quote was even attributed with my name. I know the obvious thought would have been that I was still dreaming, but I was definitely awake by then.

Cue music from 'The Twilight Zone'. Definitely a bit 'cosmic coincidence'!