Travis Roth

Duration: 2 minutes and 4 seconds

Country: United States

Language: English

License: CC - Attribution Non-commercial No Derivatives

Genre: None

Views: 50 (1 embedded)

Posted by: umarket on Nov 13, 2009

Describes OSU's implementation of fiber-optic technology to measure water temperature.

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I'm Travis Roth. I'm a PhD student
at OSU. I'm working in the Water Resoucre
Engineering Program.
In the future we're seeing some of these
scenarios that these low-level, low elevation
mountains, like we have in the western Cascades,
are going to be seeing less snow
and more of this precipitation coming down
as rain. So our job is to see how that
is going to effect our streams,
how is that going to effect our ground water,
and ultimately downstream users:
agricultural, urban uses, and
there's also the recreation component as well.
We're very concerned with how our streams
are interacting with manmade obstacles
such as dams. How it's interacting with
maybe the snow melt component,
if we're getting less snow is that changing
the temperature dynamics within the stream.
So I work with fiber-optic technology,
which basically is what you'll see
in the telecommunications industry.
And what we do is we shoot
light pulses down the fiber-optic
cable and, based on some of this
back scatter and the time of light travel we
can get discrete measurements of temperature
at every meter down the profile
of this fiber-optic cable.
And that can be tens of kilometers.
And we can get it in to a hundredth of a
degree Celsius accuracy.
So we use these fiber-optic technologies so
we can really pick up these discreet
changes, I guess, within the stream.
And we can find a way to maybe
pinpoint where these cold waters are coming
in. And from there we can model
and we can understand the whole system
as a whole so we can address these problems
as case-by-case basis.

Travis Roth

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