Data from: Measuring Seafloor Strain with an Optical Fiber Interferometer
- Collection
- Cite This Work
-
Zumberge, Mark A.; Hatfield, William; Wyatt, Frank K. (2018). Data from: Measuring Seafloor Strain with an Optical Fiber Interferometer. UC San Diego Library Digital Collections. Dataset. https://doi.org/10.6075/J0BR8QD7
- Description
-
A 95.5 day long record of earth strain collected on the seafloor offshore Oregon was collected. The instrument used was a 200-m-long optical fiber cable, stretched between two anchors in an east-west line. The optical phase of 1310 nm laser light was recorded from the output of two interferometers, one for each of two optical fibers in the 200-m-long sensing cable. The fibers differ in their temperature coefficients by about 15% to facilitate separation of phase change due to strain from that due to temperature. Four data files are included: phase1, phase2, temperature, and time. Each is sampled at 20 samples per second.
Four data files are provided, each a vector of a single data type having 165 024 000 values.
The four variables are time, phase1, phase2, and temperature. The two phases are the optical phases from two optical fiber interferometers. The temperature data are from a thermistor on the reference mandrel.
The data files are readable with matlab using the statement "load <filename>"
The file sizes are:
499M phase1.mat
498M phase2.mat
129M temperature.mat
289M time.mat
Start: 20151024 0 0 0 (2015:297:00:00:00)
End: 2016127115959(2016:027:11:59:59.95)
total duration: 95.5 days
Sample rate: 20 samples per second
Units:
phase1 and phase2: optical radians (floating point)
conversion factor: 0.45 nanostrain per radian (strain[nanostrain] = 0.45 * phase[radians])
temperature datalogger counts (-32,768 to 32,767)
conversion factor: T[deg C] = 0.0001739 * counts + 4.6716
time: seconds epoch time, seconds since 1970.0
location:
42 deg 28.164 minutes North
125 deg 15.869 minutes West
1910 m depth
azimuth: EastWest
length: 200 m
The seismometer data is available from the IRIS DMC, http://service.iris.edu/irisws/timeseries/docs/1/builder/ network name OO (as in Ocean Observatories), station HYSB1, channel LHE. - Date Collected
- 2015-10-24 to 2016-01-27
- Date Issued
- 2018
- Authors
- Funding
-
National Science Foundation, award numbers 1235384 and 1617828
- Topics
- Cartographics
Point: 42.46940, -125.26448
Format
View formats within this collection
- Language
- English
- Identifier
- Related Resource
- Zumberge, M. A., Hatfield, W., & Wyatt, F. K. ( 2018). Measuring seafloor strain with an optical fiber interferometer. Earth and Space Science, 5, 371– 379. https://doi.org/10.1029/2018EA000418
Primary associated publication
- License
-
Creative Commons Attribution 4.0 International Public License
- Rights Holder
- UC Regents
- Copyright
-
Under copyright (US)
Use: This work is available from the UC San Diego Library. This digital copy of the work is intended to support research, teaching, and private study.
Constraint(s) on Use: This work is protected by the U.S. Copyright Law (Title 17, U.S.C.). Use of this work beyond that allowed by "fair use" or any license applied to this work requires written permission of the copyright holder(s). Responsibility for obtaining permissions and any use and distribution of this work rests exclusively with the user and not the UC San Diego Library. Inquiries can be made to the UC San Diego Library program having custody of the work.
- Digital Object Made Available By
-
Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp)
- Last Modified
2023-06-05