Reduction and presentation of field data	(due Oct. 11, 2012)

In today’s class you will use the data collected on 09-22-12 just west of Bayou Corne and south of route 70, Louisiana.

Your goal is to:
1) Join the different shear-wave shotpoint gather data sets into one pseudowalkaway data set.

To this end, you should first 
* concatenate all the files into one file and examine this for large mistakes.  (Hint: examine 1013.* and 1014.*)
* concatenate the shear data collected by hitting the hammer from the south 
                                                     files: 1023,1021,1019,1017,1015, 1011,1009 
* concatenate the shear data collected by hitting the hammer from the north
                                                            files: 1024,1022,1020,1018,1016,1012,1010
* Make sure that the near offsets appear on the left of the page and the far offsets appear on the right of the page (Hint: the order of concatenation reversed in the previous bullet point)
* Subtract the two data sets from each other (sudiff)
* Examine the frequency spectrum (suxedit or sufft | suamp) 
* Choose suitable filter parameters (sufilter)
* Choose a suitable display gain (sugain)
* Display the data in both wiggleform (suxwigb) and interpolated variabledensity (suximage)
* Change the values for sx,offset,gx,fldr,tracf,cdp to that they:
(Hint: start at: 0,0,1,1001,1,101 for each parameter, respectively, and grow the parameters between traces, from nearest to farthest distance between shot and receivers successively by the following increments:
0,1,1,0,1,0)

 	Use the scripts that you worked on in class for the last laboratory session
Please hand in this laboratory exercise  printed and on paper.  Please include any screen captures you consider important.