The shot and receiver spacing is not the same for all lines. High resolution lines are marked as HR lines. The standard version is sometimes refered to as the regional line. 23U refers to an undershoot based on lines 2 and 3. It is not clear why some lines got a suffix F during processing.
Note that HiRes line 14HR is really a "mixed resolution" line. From the chaining notes I got the following station intervals:
101(BOL)-155: 100m
155-1545: 20m
1545-1723: 100m
1724-2023: 20m
2023-2095(EOL): 100m
To make things more confusing, every station was surveyed in the HR sections, but only every second station in what the chaining notes call the regular sections. The 100 m interval corresponds to a surveyed distance, the station spacing for the regular parts (and the "regional" lines in general) is thus 50 m.
| Data type | Lines |
|---|---|
| SEGP1 files | 1, 2, 2-HR, 3, 4, 5, 6, 8, 9, 10, 12, 12A (HR), 14, all compressed (160 k) |
| CDP coordinates | 1, 2-3-4, 5, 6, 8, 9, 10, 12, 14 |
| Veritas' trace kills | 1, 2, 3, 4, 5, 6, 8, 9, 2-HR, 10, 12, 12F, 14, 14F, 14-HR, 23U, 1, 2, 2-HR, 3, 4, 5, 6, 8, 9, 10, 12, 12F, 14, 14F, 14-HR, 23U, all compressed (152 k) |
| first break picks | 2F (304 k), 12F (1032 k), 14 (6 k), 14F (208 k), all compressed |
| Observer files | compressed |