- John's recent papers are:
- Shahar Shani-Kadmiel, Michael Tsesarsky, John N. Louie, and Zohar Gvirtzman, 2012, Simulation of seismic-wave propagation through geometrically complex basins - the Dead Sea Basin: Bulletin of the Seismological Society of America, 102, 1729-1739, doi: 10.1785/0120110254.
(4.8 Mb PDF preprint)
- J. N. Louie, Pullammanappallil, S., and Honjas, W., 2011, Advanced seismic imaging for geothermal development: Proceedings of the New Zealand Geothermal Workshop 2011, Nov. 21-23, Auckland, paper 32, 7 pp.
(9.3 Mb PDF preprint)
- I. M. Tibuleac, D. H. von Seggern, J. G. Anderson, and J. N. Louie, 2011, Computing Green's functions from ambient noise recorded by accelerometers and analog, broadband, and narrow-band seismometers: Seismological Research Letters, 82, 661-675.
- J. N. Louie, S. K. Pullammanappallil, A. Pancha, T. West, and W. Hellmer, 2011, Earthquake hazard class mapping by parcel in Las Vegas Valley: presented at the ASCE 2011 Structures Congress, Las Vegas, NV, April 14.
(Presentation HTML;
Proceedings paper link to ASCE - doi:10.1061/41171(401)156, 12 pp.)
- Zohar Gvirtzman and John N. Louie, 2010, 2D analysis of earthquake ground motion in Haifa Bay, Israel: Bulletin of the Seismological Society of America, 100, 733-750, doi: 10.1785/0120090019.
(3.7 Mb PDF preprint)
- Donghong Pei, John N. Louie, and Satish K. Pullammanappallil, 2009, Erratum to Improvements on Computation of Phase Velocities of Rayleigh Waves Based on the Generalized R/T Coefficient Method: Bulletin of the Seismological Society of America, 99, 2610-2611.
- Donghong Pei, John N. Louie, and Satish K. Pullammanappallil, 2008,
Improvements on computation of phase velocities of Rayleigh waves based on the
generalized R/T coefficient method: Bull. Seismol. Soc. Amer., 98,
280-287, DOI: 10.1785/0120070057.
(
211 kb PDF preprint)
- A. Pancha, J. G. Anderson, J. Louie, and S. Pullammanappallil, 2008,
Measurement of shallow shear wave velocities at a rock site using the
ReMi technique: Soil Dynamics and Earthquake Engineering, 28, 522-535.
- Aasha Pancha, John G. Anderson, and John N. Louie, 2007,
Characterization of near-surface geology at strong-motion stations in the
vicinity of Reno, Nevada: Bull. Seismol. Soc. Amer., 97, 2096-2117.
- Donghong Pei, John N. Louie, and Satish K. Pullammanappallil, 2007,
Application of
simulated annealing inversion on high-frequency fundamental-mode Rayleigh wave
dispersion curves: Geophysics, 72, no. 5 (Sept.-Oct.), pp. R77-R85.
(
4.7 Mb PDF preprint)
- S. Bannister, C. Thurber, and J. Louie, 2006, Detailed fault structure
highlighted by
finely relocated aftershocks, Arthur's Pass, New Zealand: Geophys. Res.
Lett., 33,
L18315, doi:10.1029/2006GL027462.
(
1.6 Mb PDF preprint)
- Weston A. Thelen, Matthew Clark, Christopher T. Lopez, Chris Loughner,
Hyunmee
Park, James B. Scott, Shane B. Smith, Bob Greschke, and John N. Louie, 2006, A
transect of 200 shallow shear velocity profiles across the Los Angeles Basin:
Bull. Seismol. Soc. Amer., 96, no. 3 (June), pp. 1055-1067, doi:
10.1785/0120040093.
(920 kb
PDF preprint)
- James B. Scott, Tiana Rasmussen, Barbara Luke, Wanda Taylor, J. L. Wagoner,
Shane B. Smith, and John N. Louie, 2006, Shallow shear velocity and seismic
microzonation of the urban Las Vegas, Nevada basin: Bull.
Seismol. Soc. Amer., 96, no. 3 (June), pp. 1068-1077, doi:
10.1785/0120050044.
(600 kb
PDF preprint)
- W. J. Stephenson, J. N. Louie, S. Pullammanappallil, R. A. Williams, and J.
K. Odum,
2005, Blind shear-wave velocity comparison of ReMi and MASW results
with boreholes to 200 m in Santa Clara Valley: Implications for earthquake
ground motion assessment:
Bull. Seismol. Soc. Amer., 95, no. 6 (Dec.), 2506-2516.
(830
kb PDF journal reprint)
- J. B.
Scott, M. Clark, T. Rennie, A. Pancha, H. Park and J. N. Louie, 2004, A shallow
shear-wave velocity transect across the Reno, Nevada area basin: Bull.
Seismol. Soc. Amer., 94, no. 6 (Dec.), 2222-2228.
(300
kb
PDF)
-
John N. Louie, Weston Thelen, Shane B. Smith, Jim B. Scott, Matthew Clark, and
Satish Pullammanappallil, 2004, The northern Walker Lane refraction experiment:
Pn arrivals and the northern Sierra Nevada root: Tectonophysics, 388, no.
1-4, 253-269.
(
5.1 Mb PDF journal reprint)
-
John N. Louie, Sergio Chávez-Pérez, Stuart Henrys,
and Stephen Bannister, 2002, Multimode migration of scattered and
converted waves for the structure of the Hikurangi slab interface,
New Zealand: Tectonophysics, 355, no. 1-4,
227-246.
-
John N. Louie, 2001, Faster, better: shear-wave velocity to
100 meters depth from refraction microtremor arrays:
Bull. Seismol. Soc. Amer., 91, no. 2 (April), 347-364.
- R. E. Abbott, J. N. Louie, S. J. Caskey, and S. Pullammanappallil,
2001,
Geophysical confirmation of low-angle normal slip on the historically
active Dixie Valley fault, Nevada: Jour. Geophys. Res., 106,
4169-4181.
(1.1 Mb
PDF)
Permission to Copy: For all works linked to these pages authored
by John Louie, where copyright has not been reserved by others, John Louie gives
worldwide permission to copy, transmit, store, print, and distribute the
electronic
work, provided the work's source, copyright notice, and authorship remains as
is in the original work, on all copies. Extracts may be made from all such works
and similarly copied, exhibited, or distributed, provided attribution to ``J.
Louie,
University of Nevada'' immediately accompanies all extracts. There are other
works
here, identified with red links
and within their electronic files, for which J. Louie cannot extend any permission to distribute.
To be plain, you can
copy my figures into your public and private lectures as long as you credit me
on
the slide. You can also give copies of my preprints to your students and
colleagues
as long as you keep the title and author page with each copy. You can have your
own copy
but can't distribute any reprint of journal articles posted here, since
the journal holds
the copyright to that version of my work.
- John works closely with
Optim Inc.,
a Nevada software company that has partnered with the
University through the
Nevada Applied Research Initiative (NARI).
Optim is the principal supporter of the Center
for Migration and Tomography (CEMAT) and the Collaboratory
for
Computational Geosciences (CCoG) at UNR.
Their commercial products include:
- Free Software! John offers to geophysicists and students:
- The Resource Geology Seismic Processing System for Java (JRG)
is a basic reflection processing package with superb graphics, 3-d
and crooked-line capabilities, SEG-Y and sound file I/O, and a friendly GUI that
runs on any
machine (lacks muting, decon, migrations):
JRG home -
download (240 kb .jar) (run
``java -cp jrg.jar Viewmat'') -
download source
(172 kb .jar) -
class exercises using JRG:
refraction;
reflection;
complex numbers;
Z-plane filtering;
2-d FFT;
wave propagation -
sound and image output examples.
- ModelAssembler is an
open-source, Java-based velocity-model gridding
code
that can integrate scattered and heterogeneous geophysical data sets.
Try the MA-CME 5.3.1 GUI: The ModelAssembler Community Modeling
Environment has a tutorial graphical interface that sets up the input
file for any E3D run. Get the
428-kb ZIP distribution and run it with the commands
``unzip ma531.zip; cd ma; java CME &''. Basin and geotechnical
data input files for Nevada, Los Angeles, and Wellington are available from
crack.seismo.unr.edu/hazsurv/CME/data/ . Example E3D runs are in
crack.seismo.unr.edu/hazsurv/CME/examples/ .
MA3 and the WPP and E3D finite-difference codes are used on the
CCoG facility in lab exercises for
a Geophysics and Geodynamics course to explain:
f-d synthetic seismograms;
the Courant condition;
grid dispersion;
Huygens, Fermat, and Snell.
More on the WPP code from:
LLNL.
More on Shawn Larsen's E3D code from:
the OECD's Nuclear Energy
Agency;
LLNL's Hazards Mitigation
Center.
- Convimage
is C code that will convert E3D image sequences (created
on Linux or Sun) to raw image files for conversion to movies with shareware
applications on a Mac.
- AssembleTexans is a Java code, that will run on an
RT-125 bridge computer, and make gathers out of .RSY files by
simple concatenation that JRG will view:
download source (.java);
download compiled .class.
- SEGYTexans is an alternative Java code, that will run on an
RT-125 bridge computer, and make gathers out of .RSY files by
concatenation and windowing that JRG will view:
download source (.java);
download compiled .jar archive,
including
needed JRG class files.
- The Resource Geology Seismic Processing System (RG)
is a collection of 150 (mostly) simple C codes for seismic processing
research, without support for graphics or standard headers:
package documenting
how to migrate network seismograms;
more about RG;
program list;
download source & Sun
binaries (4+ Mb .tar.Z);
Clayton's getpar (required);
exercise using RG.
- Getpar for Java implements some of the features of Clayton's library:
source [main() is usage examp.];
tests.
- Grav2d is a simple Talwani-prism gravity inversion,
in Java so it runs on anything, with no GUI and simple text input
and output:
download
source (.java);
class exercise.
- Surv is a C code that reduces data collected with an
EDM theodolite:
download source (.c);
usage examples.
- Fttest is a C code for a 2-d FFT benchmark:
download directory;
cross-platform results.
Copyright: The free software source linked above has been placed
in the
public domain by its author, John Louie, and is free to all worldwide for any
use.
A citation is always appreciated; see the
JRG page for suggestions.
- John's research projects include:
- Read John's curriculum vita (with links),
or a 2-page resume in PDF
or
MS Word format.
- John's YouTube playlists that may be of interest to students and colleagues:
- Earthquake Scenarios- Animations of wave-propagation computations for earthquake scenarios.
- Mackay Geophysics- Students and faculty at the University of Nevada, Reno conduct geophysical surveys and present results. Some lecture materials posted for students. Links to some geophysically interesting movies by others.
- Road Flights- Timelapse videos taken from moving vehicles on trips around Nevada, California, and New Zealand. With frames taken at 1 to 5 second intervals, the apparent speeds can be in the thousands of miles per hour.
- Timelapse- Timelapse videos, mostly sunsets and sunrises, taken from stationary locations in California, Nevada, and New Zealand.
- Presentation on
Applied Geophysics at the Mackay School of Mines.
- Photos:
