| MARINE SURVEY GENERAL INFORMATION |
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| GENERAL |
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Voyage No. : |
YK02-04 |
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JAMSTEC
/ others: |
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| AREA |
Puna ridge |
LINE No. |
Line9-4_30 |
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| FIRST SP No. |
1 |
LAST SP No. |
96 |
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| DATE/TIME |
15:53:40 07/18/2002 |
DATE/TIME |
16:41:15 07/18/2002 |
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| WEATHER |
Fine but Cloudy |
WEATHER |
Fine but Cloudy |
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| SEA CONDITION |
Sea rough |
SEA CONDITION |
Sea rough |
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| Latitude |
19°25.7566 |
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Latitude |
19°21.8748 |
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| Longitude |
154°28.3528 |
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Longitude |
154°27.6236 |
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| SEA DEPTH |
5228 |
m |
SEA DEPTH |
5540 |
m |
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| SOG |
4.9 |
knt |
SOG |
4.9 |
knt |
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| Wind Lebel |
Strong breeze |
Wind Lebel |
Strong breeze |
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| S.P. INTERVAL |
30 |
sec |
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7.4～8.0 |
m |
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| CABLE DEPTH |
9.7～9.9 |
m |
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| SOURCE |
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| GUN TYPE |
GI-GUN (Seismic systems, inc.) |
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| VOLUME |
350×1 |
cu.in |
([G]245cu.in, [ I ] 105cu.in) |
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| AIR PRESSURE |
1300 |
psi |
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8.966 |
Mpa) |
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| GI DELAY TIME |
35.0 |
msec |
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| RECORDING |
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| SAMPLE FREQENCY |
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1000 |
Hz |
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| RECORD LENGTH |
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12000 |
msec |
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| WATER
DELAY |
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0 |
msec |
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| Processing (SPW) |
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| ①SDC |
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| ②Bandpass |
Lo cut (Hz) |
Lo pass (Hz) |
Hi pass (Hz) |
Hi cut (Hz) |
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20 |
30 |
200 |
250 |
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| ③AGC |
Top window length (msec) |
Bottom window length |
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200 |
1000 |
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| STREAMER |
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| ACTIVE STREAMER |
65 |
m |
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| HYDROPHONE TYPE |
SIG 16 |
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| SENSITIVITY |
-90db, re1V/μ bar, ±1db |
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| No. of HYDROPHONE GROUP |
48 |
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| FRONT STRETCH
SECTION |
135 |
m |
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| FILE NAME |
Line9-4_30 |
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| REMARKS |
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| compresser No.1 stop |
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R/V YOKOSUKA |
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