Course Information | Germany- Working with Strainmeter Data Shortcourse

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Course Overview

Strainmeters provide better strain resolution than GPS and can record strain transients at periods much longer than broadband seismometers. This workshop will describe how strainmeters work, present examples of tectonic strain transients recorded by PBO strainmeters, and outline how to access and work with the data. This 3-day workshop will cover the main topics involved in processing strainmeter data with the purpose to help make strainmeter data useful to a broad scientific audience. This will be a hands-on workshop, we will work through the steps required to access, process and isolate tectonic signals in the data using data sets from the Plate Boundary Observatory in the western US and strainmeters recently installed in Turkey. We encourage attendees to bring other strain data sets they might also be interested in working on and welcome questions particular to that data set.

Please check this and the Course Materials page routinely for updates on the Agenda and materials.

Agenda

Monday, March 6, 2017 

10:00 - 10:15	Introductions
10:15 - 11:00	General Overview	Kathleen
11:00 - 12:00	Data Products & Accessing Data	Kathleen
Break
1:00 - 2:00	Strain Fundamentals Processing Steps, Plotting Data	Kathleen
2:00 - 2:45	Assesing Data Quality	Kathleen
3:00 - 3:30	Tidal Analysis using Baytap08	Kathleen
3:30 - 5:00	Class work: Removing tides and barometric pressure from strainmeter data	Dave and Kathleen

Tuesday, March 7, 2017 

9:00 - 10:00	Strainmeters: Installation, operation and how they work	Dave
10:00 - 11:00	Marmara Strainmeter Project	Dave
11:00 - 12:00	Marmara Strainmeter Data Review	Dave & Kathleen
Break
1:00 – 1:45	Strainmeter Calibration Theory	Kathleen
2:00 - 2:45	SPOTL General	Dave
3:00 – 3:15	SPOTL scripting	Dave, Kathleen
3:15 – 5:00	Class work: Tidal corrections with SPOTL using BAYTAP results	Dave and Kathleen

Wednesday, March 8, 2017 

9:00 – 11:00	Working with Strain Data	Dave and Kathleen
BREAK
Afternoon	Individual tuition and help with software and analysis

Computer Requirements

Participants must bring their own laptops, or have access to a remote machine, running a Unix-type system (Linux, Mac OSX), and are encouraged to install the software listed below before the course. Instructors will help with installation if attendees have difficulty with installation.

Software List

• GMT5, for plotting the data, http://gmt.soest.hawaii.edu/projects/gmt/wiki/Installing
• Software to view the GMT plots, e.g., Ghost Script (http://ghostscript.com/download/). Mac users can install Ghost Script using macports (https://www.macports.org/) or use Preview, a built in application on a Mac.
• We will be using the BAYTAP08 software to analyze the tidal signals, estimate the barometric response and isolate strain signals. This software requires a Fortran complier. I will provide pre-compiled binaries for Mac and Linux users during the class. http://igppweb.ucsd.edu/~agnew/Baytap/baytap.html
• A text editor such as vi to edits scripts.
• PBO SEED Codes http://www.unavco.org/projects/project-support/borehole-services/lib/docs/pbo_seed_conventions.pdf
• Strainmeter Processing Overview: http://www.unavco.org/projects/project-support/borehole-services/bsm-data-processing/bsm-data-processing.html

Suggested Reading List

• Gladwin, M. T., High precision multi component borehole deformation monitoring, Rev. Sci. Instrum., 55, 2011–2016, 1984. (http://www.gtsmtechnologies.com/publications/9High_prec_Mul_Bhole_def_mon_RSI_1984.pdf )
• Hart, R. H. G., M. T. Gladwin, R. L. Gwyther, D. C. Agnew, and F. K. Wyatt (1996), Tidal calibration of borehole strain meters: Removing the effects of small-scale inhomogeneity, J. Geophys. Res., 101(B11), 25553-25571, doi:10.1029/96JB02273, (http://onlinelibrary.wiley.com/doi/10.1029/96JB02273/abstract)
• Hodgkinson, K., J. Langbein, B. Henderson, D. Mencin, and A. Borsa (2013), Tidal calibration of plate boundary observatory borehole strainmeters, J. Geophys. Res. Solid Earth, 118, 447-458, doi:10.1029/2012JB009651, (http://onlinelibrary.wiley.com/doi/10.1029/2012JB009651/full)
• Dragert, H., and K. Wang (2011), Temporal evolution of an episodic tremor and slip event along the northern Cascadia margin, J. Geophys. Res., 116, B12406, doi:10.1029/2011JB008609 (http://onlinelibrary.wiley.com/doi/10.1029/2011JB008609/full)
• Linde, A. T., M. T. Gladwin, M. J. S. Johnston, R. L. Gwyther, and R. G. Bilham (1996), A slow earthquake sequence on the San Andreas Fault, Nature, 383, 65-68, doi:10.1038/383065a0 (http://www.nature.com/nature/journal/v383/n6595/abs/383065a0.html)
• A list of strainmeter -related literature can be found at https://www.unavco.org/projects/project-support/borehole-services/bsm-literature/bsm-literature.html

Last modified: 2020-02-08  01:05:13  America/Denver