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Wednesday, October 29, 2014

2014 SEG Annual Meeting

Geology MS student Kevin Liner in 3-day ExxonMobil SEG education course, a worldwide competitive program that admits 30 students per year. 

Kevin gives first EVER Arkansas Geoscience student presentation at SEG. 

2914/5 SEG President Chris Liner and first lady Dolores Proubasta at the President's reception. 

Chris Liner with 2015/6 SEG President and Boise St. Professor John Bradford previewing the exhibition floor under construction. Attendance was strong at 8500. Next year...New Orleans!


Friday, October 17, 2014

Open Faculty Position In Basin Analysis and Structure

In the last few years, the University of Arkansas Department of Geosciences has made significant faculty hires: Mohamed Aly,  Matt Covington,  Greg Dumond,  Christopher Liner,  Adriana PotraJohn Shaw,  Celine Suarez, and Xuan Shi.  [Full list of faculty]

These changes have set the direction of the department of many years to come. We are currently searching for another entry-level faculty member, an outstanding individual in the broad areas of basin analysis and/or crustal/brittle structural geology.  Full advertisement can be found here (closing date 11/3/2014)

The department is rebuilding, strengthening, and focusing on geology fundamentals.  If you know someone who qualifies, who would like to be a part of our renewed geology effort, and would enjoy living in a vibrant college town, please let them know about this opportunity at the University of Arkansas.

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Fayetteville AR is a great place to live.  Get a general overview on Wikipedia, or check out the award winning farmers market, civil war sites, Buffalo river country,  or who is playing at the Arkansas Music Pavilion. Wether you are into art galleries or trout fishing, this area is amazing.  Oh, and the geology is excellent!

Mississippian carbonate outcrop near Bellavista AR.

Dickson Street Inn and Pub only a few blocks from campus.

The best used book shop between Chicago and Dallas.
A glimpse into the rabbit warren that is Dickson Street Bookshop.

Monday, September 15, 2014

Mathematica Manipulate codes

15 Sept 2014

Title : Seismic direct/refraction interpretation
Version: Mathematica 10.0.0.0
Author : Christopher Liner (U Arkansas)
Date : 15 Sept 2014
Status : Open source

Note: Interpret direct wave and up to 3 refractoin arrivals.  Valid for P or S waves. Input (offset, time) data file required. Units on offset determine units on velocity. 
Download notebook
Download firstbreak.csv  (* example input data file *)
Interface image




7 July 2014

Title : 3D Gravity profile over 2 buried spheres
Version: Mathematica 8.0.0.0
Author : Christopher Liner (U Arkansas)
Date : 7 July 2014
Status : Open source

Note: Anomaly in milligals.  If spheres overlap, result in incorrect.  Radius of sphere 2 is constrained to avoid this case.
Interface image

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Title : 2D Gravity profile over 2 buried spheres
Version: Mathematica 8.0.0.0
Author : Christopher Liner (U Arkansas)
Date : 7 July 2014
Status : Open source
Note: Anomaly in milligals.  If spheres overlap, result in incorrect.  Radius of sphere 2 is constrained to avoid this case.
Download notebook
Interface image


3 July 2014

Title : 2D Gravity profile over buried sphere 
Version: Mathematica 8.0.0.0 
Author : Christopher Liner (U Arkansas) 
Date : 3 July 2014 
Status : Open source 
Note: Anomaly in milligals. Red dots indicate half-width points of anomaly. 
Interface image


2 June 2014

Title : Acoustic seismic shot record (no dip) manipulate
Version: Mathematica 8.0.0.0
Author : Christopher Liner (U Arkansas)
Date : 2 June 2014
Status : Open source
Note: Tooltip allows identification by hovering over event (cleaner than a legend)
Interface image

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21 May 2014

Got this query by email today:


Hi Chris,

I read your blog from time to time and was curious if you had any Mathematica/Manipulate packages that were downloadable for others to use in their courses?  I will be teaching an Environmental Geophysics course in the fall using Burger/Sheehan/Jones, and would like to use/create some Manipulate packages that would help the students better understand seismic refraction/reflection, magnetics, etc.

Thanks in advance for any help/advice that you might have.

Best,
Scott

M. Scott Wilkerson
DePauw University
Department of Geosciences


This makes me think of the many M codes I have written that do not get out to the geophysics community.  Could be a good time to fix that.  The main things of interest, at least initially, will be Manipulate codes.  Let's set up a template (I'm open for better suggestions):

Title : Simple 3 D seismic bin size manipulator
Version: Mathematica 9.0.1.0
Author : Christopher Liner (U Arkansas)
Date : 21 May 2014
Status : Open source
Interface image:         









The download comes from my dropbox. Of course, the notebook is only useful if you have Mathematica.  Can't help you there.  Compatibility issues with different version of Mathematica may pop up.  If you get complaints about the notebook being from a newer/older version, just push on and it will likely work. Perhaps Scott could test the notebook and report back via blog comment.