Freerunner and Earthquakes
ortwin at gmail.com
Sat Apr 19 23:52:14 CEST 2008
Yes, AFAIK GPS requires accurate time to function.
On 4/19/08, Brandon Kruger <bmk789 at gmail.com> wrote:
> On Sat April 19 2008 5:29:50 pm Richard Guest wrote:
> > Yeah, it's an interesting idea.
> > I read something similar on Evil Mad Scientist
> > http://www.evilmadscientist.com/article.php/seismometry2
> > The detection/pinpointing part requires both accurate detection of shaking
> > and timing - obviously the timing is critical for triangulation.
> > I think the *cool* factor for something like this would be the ability to
> > measure a persons actual physical experience of an earthquake. There are
> > *lots* of existing seismometers that will do the *fixed* point detection a
> > whole lot better, but none (that I know of) that will be (relatively)
> > unobtrusive to the users daily life and still give an actual measurement
> > physical shaking intensity.
> > You shouldn't have to wait that long for e/q info... In New Zealand the
> > news media mostly regurgitate what we post on http://www.geonet.org.nz/
> > There's near-realtime shaking info on the front page, and if there's
> > actually an earthquake people can submit a "Felt Report" to tell us how
> > they experienced it.
> > It would be really cool to see how a personal accelerometer trace
> > correlates to the fuzzy-logic of the felt report!
> > End thoughts...
> > --
> > Rich
> > On 20/04/2008, Brandon Kruger <bmk789 at gmail.com> wrote:
> > > After recently having a 5.2 earthquake here in the Midwest, I realized
> > > the potential in the Openmoko for detecting/pinpointing earthquakes.
> > > What this
> > > is mostly dependant on is the accuracy of the accelerometers in the
> > > Freerunner. From what I've read, Macbooks' accelerometers and detect
> > > measure earthquakes fairly accurately.  If the Freerunner's
> > > accelerometers are precise enough and it could be attached to a fixed
> > > ground,
> > > we could use GPS to retreive an accurate location and record and upload
> > > accelerometer data to a database. Many different devices running this
> > > could
> > > provide intensity levels at many different locations and (at least
> > > accurately), pinpoint an epicenter. This data could become useful to
> > > researchers and would provide information about an earthquake faster
> > > almost any news network would provide.
> > >
> > > Thoughts?
> > >
> > >  http://www.suitable.com/tools/seismac.html
> > >
> > >
> > > --
> > > ----
> > > Brandon Kruger <bmk789 at gmail.com>
> > > http://onedollarlinux.com
> > > BLOG - http://onedollarlinux.com/personal/
> > >
> > > Please avoid sending me Word or PowerPoint attachments.
> > > See http://www.gnu.org/philosophy/no-word-attachments.html
> > >
> > > _______________________________________________
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> > > community at lists.openmoko.org
> > > http://lists.openmoko.org/mailman/listinfo/community
> Wouldn't GPS provide an accurate time? I thought GPS sends its own official
> time, like an atomic clock. I could be wrong. Anyone know more about this?
> Brandon Kruger <bmk789 at gmail.com>
> BLOG - http://onedollarlinux.com/personal/
> Please avoid sending me Word or PowerPoint attachments.
> See http://www.gnu.org/philosophy/no-word-attachments.html
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