Freerunner and Earthquakes

[Brandon Kruger]

On Sat April 19 2008 5:52:14 pm Ortwin Regel wrote:
> Yes, AFAIK GPS requires accurate time to function.
>
> Ortwin
>
> 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
> >
> > of
> >
> > > 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
> >
> > and
> >
> > > > measure earthquakes fairly accurately. [1]  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
> >
> > fairly
> >
> > > > accurately), pinpoint an epicenter.  This data could become useful to
> > > > researchers and would provide information about an earthquake faster
> >
> > than
> >
> > > > almost any news network would provide.
> > > >
> > > > Thoughts?
> > > >
> > > > [1] 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>
> > 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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When I used a bluetooth GPS with my laptop, I notices the gpsd output had a 
different time than my system clock showed, so I assume GPS provides its own 
clock.

-- 
----
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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