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U.S. Geological Survey Data Series 496

Acquisition Parameters


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Table 1. Summary of acquisition parameters.

Power
Level
(J)

Sample
Frequency
(kHz)

Record
Length
(ms)

Shot
Rate
(s)

Shot
Spacing
(m)

Navigation
System

Navigation
Receiver
Accuracy
(m)*

Fix
Interval
(s)

100

8-12

200

1

2.5

GPS

3-5

1

*The navigation information was recorded in two locations in the original SEG-Y headers. The navigation in the defined fields is only accurate
to 1 s of arc or approximately 31 m. The navigation stored in the undefined fields, used here to produce the trackline maps
and navigation files, is accurate to the degree of the GPS receiver or 3-5 m. The navigation files provided here were extracted from
the undefined fields using Delph Seismic-provided software.


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