gensetg SHOTS: --------------------------- Enter first shot file NAME number 1001 Enter last shot file NAME number 1004 Enter first SP label NUMBER 01 Enter increment for SP label NUMBER 01 PHONES: --------------------------- Enter number of BLOCKS to define channels 2 BLOCK Number------- 1 Channels (1) through (?) Enter last channel for this block 12 Enter first label VP NUMBER for this block 01 Enter label VP increment for this block 01 BLOCK Number------- 2 Channels (13) through (?) Enter last channel for this block 24 Enter first label VP NUMBER for this block 50 Enter label VP increment for this block 1
The two files output are shots.txt and phones.txt. The shots.txt file contains the following:
1001.seg SP001 1002.seg SP002 1003.seg SP003 1004.seg SP004The phones.txt file contains the following:
01 VP001 02 VP002 03 VP003 04 VP004 05 VP005 06 VP006 07 VP007 08 VP008 09 VP009 10 VP010 11 VP011 12 VP012 13 VP050 14 VP051 15 VP052 16 VP053 17 VP054 18 VP055 19 VP056 20 VP057 21 VP058 22 VP059 23 VP060 24 VP061These SP and VP labels would correspond to those in an *.nez file produced by a surveying instrument. This example might correspond to channels 1-12 being on one bank of a river, then a jumper cable might cross the river and connect to channels 13-24 with geophones on the other bank of the river. The 4 shots might then be taken with an airgun deployed from the bridge. In reality, there would likely be more shots than 4, but this illustrates the concept.