[ghsc-seminars] Today in 30 minutes (2pm): Ali Tura, Colorado School of Mines, Fiber Optical Sensing in the Subsurface

[Mirus, Benjamin]

*Recent advances on the use of fiber optical sensing in the subsurface*

*Dr. Ali Tura*
*Professor of Geophysics and Director of RCP*
*Colorado School of Mines *

Fiber optical sensing can cover a large range of physical measurements from
temperature, to strain, to acoustics, to pressure. These measurements are
recorded at regular intervals (distributed sensing) along the length of the
fiber. It turns out that these measurements can be very precise at least
for temperature and strain, and new advances are being made with engineered
fiber and advanced interrogators to further improve the signal quality.
The use of fiber optical sensing technology has been growing rapidly in the
earth sciences. Applications range from permafrost monitoring, to surface
seismic data acquisition, to understanding fracturing dynamics in hydraulic
fracturing completions in boreholes. There are efforts to apply the
technology to global seismology and earthquake recordings, geothermal
applications, and there may be potential to monitor strain changes in
boreholes around active faults zones. In this presentation we will go over
what this technology is, how it can be and is being used for earth science
applications, and examples of specific high precision applications and
calibration in the laboratory and in the field.

*Tuesday, December 4th**, 2018*
*2-3p*
*m*
*  (Mountain Time)*
*USGS, 1711 Illinois Street, Golden, CO*
*Entry Level Seminar Room (204)*

*Note: Please arrive *~5 minutes early* and *bring photo ID* for
airport-style security measures now in place at the USGS building.

Thank you,
GHSC Seminar Committee

Ben
Mirus - bbmirus at usgs.gov
Josh Rigler - erigler at usgs.gov
Oliver Boyd - olboyd at usgs.gov <oboyd at usgs.gov>


Dr. Benjamin Mirus
Research Geologist
Landslides Hazards Program
U.S. Geological Survey
Box 25046, M.S. 966
Denver, CO 80225

Phone: 303-273-8613
FAX: 303-273-8600
E-mail: bbmirus at usgs.gov
https://www.usgs.gov/staff-profiles/ben-mirus
http://landslides.usgs.gov/
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