From: Peter Bird <pbird@epss.ucla.edu>
Subject: RE: contribution to SCEC CGM: NeoKinema model (from UCERF3 and NSHM-WUS2014)
Date: November 9, 2015 at 10:21:23 AM PST
To: 'David Sandwell' <dsandwell@ucsd.edu>

Dear David:

The file of GPS velocities that was used in NeoKinema model NSHM-WUS_2013
is on-line (with all other input files), in the folder 
http://peterbird.name/oldFTP/NeoKinema/orogens/WUS_for_UCERF3_and_NSHM2014/3_model_using_FM3.1/1_input_files/
The file name is: wus5.omeS_reduction06CForFaults.gps.txt
(but, in my own use I remove the ".txt" and just call it:
"wus5.omeS_reduction06CForFaults.gps".

A general description of this dataset:
*Edited by Rob McCaffrey for UCERF3 and NSHM2014.
*Velocity components due to elastic strain accumulation from the Cascadia megathrust
  have been modeled and subtracted.
*Many benchmarks have multiple velocity vectors, corresponding to different regional solutions.
*I deleted a small number of Rob's benchmarks--those that fell into the same NeoKinema
   finite element as a fast-slipping (> 1 mm/a) model fault.  This is necessary because
   NeoKinema does not have velocity discontinuities at faults; it smears the faulting strain-rate
   across the whole finite-element.  If point velocity data in such elements were not removed,
   they would result in first-order model artifacts.

Best wishes,
Peter

-----Original Message-----
From: David Sandwell [mailto:dsandwell@ucsd.edu]
Sent: Friday, November 06, 2015 5:56 PM
To: Peter Bird <pbird@epss.ucla.edu>
Cc: david sandwell <dsandwell@ucsd.edu>
Subject: Re: contribution to SCEC CGM: NeoKinema model (from UCERF3 and
NSHM-WUS2014)

Hi Peter,

Thanks for the model.  There is a lot in here to digest and I hope to look at
some models this weekend.

Do you have a file of GPS velocities that you used for this analysis.  For the
SCEC CGM we want to assemble all the velocity data, velocity models and
strain rate models from each of the groups in one place.

I like the graphics!

David

On Nov 5, 2015, at 9:30 AM, Peter Bird <pbird@epss.ucla.edu> wrote:

Dear David:

Today I am finally able to provide you with the model of California velocities
and (2-D, surface) strain-rates for interseismic periods,
as you requested.

If you will navigate to this URL:
http://peterbird.name/oldFTP/temporary/for_David/
you will see a set of files prepared for you.
The most important is probably the 64-MB file,
interseismic_table.txt   .

I also provide the other 2 parts of the equation:
(longTermAverage) = (interseismic) + (meanCoseismic)
which can refer either to the velocity vector field or to the strain-rate
tensor field.

The grid resolution is 0.01 x 0.01 degrees.
Inland grid limits are 31N, 41N, and -114E.
The western limit is either -125E, or the limit of the region modeled,
whichever comes first.  (However, as the western limit is always offshore,
it will not hinder your comparison to the SCEC Community Geodetic Model.)

Please also take a look at the set of 12 colored maps in JPG format for an
overview of what is contained in the 3 table files.

I believe that this model is better in both quality and resolution than the one
I sent to you about 5 years ago for the your previous comparison study.

The primary basis for this model is the NeoKinema model NSHM-
WUS_2013001,
which I prepared for use in both UCEF3 and the NSHM-WUS 2014 update.
All input and output files (and source code) for this model are online at:

http://peterbird.name/oldFTP/NeoKinema/orogens/WUS_for_UCERF3_and_
NSHM2014/

and my following 2 papers can be cited as references:

66. Petersen, M. D., Y. Zeng, K. M. Haller, R. McCaffrey, W. C. Hammond, P.
Bird, M. Moschetti, Z. Shen, J. Bormann, and W. Thatcher [2014] Geodesy-
and geology-based slip-rate models for the Western United States (excluding
California) national seismic hazard maps, U.S. Geol. Surv. Open-File Rep.,
2013-1293, 38 pages (main report) + 5 Appendices,
http://dx.doi.org/10.3133/ofr20131293.
   including:
Bird, P. [2014] Appendix C�Estimation of fault slip rates in the conterminous
western United States with statistical and kinematic finite-element programs.
10 pages.

65. Field, E. H., G. P. Biasi, P. Bird, T. E. Dawson, K. R. Felzer, D. D. Jackson,
K. M. Johnson, T. H. Jordan, C. Madden, A. J. Michael, K. R. Milner, M. T. Page,
T. Parsons, P. M. Powers, B. E. Shaw, W. R. Thatcher, R. J. Weldon, II, and Y.
Zeng [2013] Unified California Earthquake Rupture Forecast, version 3
(UCERF3)-The time-independent model, U.S. Geol. Surv. Open-File Rep., 2013-
1165 (and Cal. Geol. Surv. Spec. Rep. 228, and Southern California Earthquake
Center Pub. 1792), 97 pages (main report) + 20 Appendices;
http://pubs.usgs.gov/of/2013/1165/;
   including:
Parsons, T., K. M. Johnson, P. Bird, J. Bormann, T. E. Dawson, E. H. Field, W.
C. Hammond, T. A. Herring, R. McCaffrey, Z.-K. Shen, W. R. Thatcher, R. J.
Weldon, II, and Y. Zeng [2013] Appendix C�Deformation Models for UCERF3.
66 pages.
   Also condensed and republished as::
Field, E. H., R. J. Arrowsmith, G. P. Biasi, P. Bird, T. E. Dawson, K. R. Felzer,
D. D. Jackson, K. M. Johnson, T. H. Jordon, C. Madden, A. J. Michael, K. R.
Milner, M. T. Page, T. Parsons, P. M. Powers, B. E. Shaw, W. R. Thatcher, R. J.
Weldon II, and Y. Zeng [2014] Uniform California Earthquake Rupture Forecast
version 3 (UCERF3)�The time-independent model, Bull. Seismol. Soc. Am.,
104(3), 1122-1180, doi: 10.1785/0120130164.

The actual production of the 3 tables I am sending you was by a new utility
program,
StrainRates2015.  It contains many subroutines and methods already
developed and
used in NeoKinema; the main difference is the high resolution of its output
files.

Best wishes,
Peter Bird

From: David Sandwell [mailto:dsandwell@ucsd.edu]
Sent: Friday, September 25, 2015 8:10 AM
To: BIRD, GEORGE P <pbird@epss.ucla.edu>
Cc: david sandwell <dsandwell@ucsd.edu>
Subject: contribution to SCEC CGM

Dear Peter,

We are in the process of compiling velocity and strain-rate models for the
SCEC Community Geodetic Model.  Back in 2010 you contributed a strain-rate
model.  The README is attached.

1) Is there a newer model that you would like to contribute?

2) Can we include this velocity and strain-rate model in a updated analysis?

3) Is there a publication or other documentation that goes with this model?

If you would like to contribute, please send a file of velocity and strain rate.
The preferred format would be ascii

lon lat Ve Vn Eee Een Enn

Thanks,

David

David T. Sandwell
IGPP 0225
Scripps Inst. of Oceanography
La Jolla, CA
92093-0225

Ph. 858 534-7109
Cell 858 663-9426
http://topex.ucsd.edu

Express Mail Address:
8795 Biological Grade
Room 1102
La Jolla, CA 92037

David T. Sandwell
IGPP 0225
Scripps Inst. of Oceanography
La Jolla, CA
92093-0225

Ph. 858 534-7109
Cell 858 663-9426
http://topex.ucsd.edu

Express Mail Address:
8795 Biological Grade
Room 1102
La Jolla, CA 92037