EW9509
Seismic Acquisition Parameters
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Receiver Type			Hydrophone Streamer
Source Type			Bolt 1500C
Acquisition System Name		Syntrak 
Acquisition System Type		Digital
Seismic Navigation System	GPS
Survey Datum			WGS84
Source to Near Channel (meters)	
Antenna to Source (meters)	
Number of Channels Recorded	Based on the data received by LDEO:	
				160 Lines 01, 03, 23-35
				156 Lines 19-22
				144 Lines 45-48
				128 Line  49
Channel Length (meters)		25
Cable Length (meters)		
Near Channel Number		160, 156, 144, 128
Cable Receiver Depth (meters)	
Source Volume (cubic inches)	8425
Source Pressure (psi)		2000
Source Number			20
Source Depth (meters)		
Shot Control			Time
Shot Interval (seconds)		20
Sample Interval (microseconds)	2000 (Data received by LDEO sampled at 4000)
Record Length (seconds)		16.384
Compass Birds			
Tail Buoy Positioning		
Recording Delay			No
2 or more ships			No
Comments:  Shot Sequence and time in headers do not match up with the shot/time
	   entries in the ts.n files.  There are no msecs in the headers. It is
	   possible that the time is from the original SEGD general header which
	   may differ from the true time.  Dates/times are zero for lines 01 (all), 
	   03, 19, 19a, 23, 24. 29.  For some lines shot number is reset to 1  
	   in the middle of the line.

	   Lines 01, 03, 19, 19a, 21-24 were flagged as IBM Floating Point.
	   Lines 20b, 25-49  were flagged as IEEE Floating Point.

	   Line 28b contained only a partial trace after shot 138, trace 40.
	   It is assumed to be incomplete.

	   LDEO has no additional information that would allow matching navigation
	   with shots and no information about source-receiver offset.

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