Table T11.

Table T11. Acquisition parameters for multichannel seismic surveys used to establish the regional seismic stratigraphy in the western Great Australian Bight.

Survey:

ESSO 1979

JNOC 1990

AGSO 1996

Line name prefix:
E79A-
JA90-
S169/

Source:
32 air guns
64 sleeve air guns
3 (6) GI air guns

Volume:
1450 in³
2180 in³
450 (900) in³

Shot interval:
25 m
25 m
12.5 (25) m

Sample rate:
4 ms
4 ms
1 ms

Record length:
6 s
6 s
3.5 (8.5) s

Cable length:
2400 m
3000 m
1000 m

Cable offset:
240 m
200 m
69.9 m

Number of groups:
48
240
80

Group interval:
50 m
12.5 m
12.5 (25) m

CDP interval:
25 m
6.25 m
6.25 (12.5) m

Fold coverage:
48
60
40 (20)

Survey:	ESSO 1979	JNOC 1990	AGSO 1996
Line name prefix:	E79A-	JA90-	S169/
Source:	32 air guns	64 sleeve air guns	3 (6) GI air guns
Volume:	1450 in³	2180 in³	450 (900) in³
Shot interval:	25 m	25 m	12.5 (25) m
Sample rate:	4 ms	4 ms	1 ms
Record length:	6 s	6 s	3.5 (8.5) s
Cable length:	2400 m	3000 m	1000 m
Cable offset:	240 m	200 m	69.9 m
Number of groups:	48	240	80
Group interval:	50 m	12.5 m	12.5 (25) m
CDP interval:	25 m	6.25 m	6.25 (12.5) m
Fold coverage:	48	60	40 (20)

Notes: Survey abbreviations: ESSO = Esso Australia; JNOC = Japan National Oil Corporation; AGSO = Australian Geological Survey Organisation; GI = generator-injector; CDP = common depth point. The parameters applied during deep-water components of AGSO Survey 169 (Lines S169/08 to S169/12) are shown in parentheses.