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Cruise information : KY05-07

航海情報 : KY05-07

Cruise Data : KY05-07

Cruise ID KY05-07
Cruise Name FY2005 Seismic study at the Izu-Ogasawara region
Specification
Survey Area Izu-Bonin Arc
Cruise ID of Seismic Survey KY05-07
Link to DARWIN http://www.godac.jamstec.go.jp/darwin_cruise/view/metadata?key=KY05-07&lang=en
Period 2005/07/08～2005/08/01
Chief Scientist Seiichi Miura
Vessel Research Vessel "KAIYO"
Operation OBS Deployment
Shooting
OBS Recovery

Survey Map




 MCS Survey Line
OBS Survey Line
OBS Position

Seismic Lines
Line Name Method 2D/3D Section Seismic velocity model Start Point(Lon.) Start Point(Lat.) End Point(Lon.) End Point(Lat.) Length (km)*1 SP No. Shot Interval ch (MCS) Number of OBS OBS Interval
IBr3 OBS 2D ibr3_obs2.sh.gif 139°59.51098′E 31°26.68815′N 141°1.89968′E 25°6.91282′N 632.7 200/50 m 104 5
IBr3_G 2D 140°19.74673′E 29°58.19397′N 140°32.50623′E 29°1.05742′N 107.6 4320 - 6471 50 m 12
OBS Positions KY05-07_obspos
Notes
IBr3_G was the high-resolution seismic survey line with 50m shooting G-gun as source.
Basic Specification
of Seismic Survey
Source Airgun Bolt LL Airgun SSI G-gun
Number of Airguns 8 4
Total Volume 12000cu.in(approx.200liter) 600 cu.in.(approx.10liter)
Pressure 2000psi(about14MPa） 2000 psi(about14MPa）
Depth 10m 5 m
Shot Interval 200m Distance Mode 50 m Distance Mode
Receiver Streamer Cable IT. I Stealtharray ST-24/48 Streamer Cable（Analog） IT. I Stealtharray ST-24/48 Streamer Cable（Analog）
Number of Channel 12ch 12 ch
Receiver Interval 25m 25 m
Number of Hydrophones 5 5
Depth 10m（Standard） 8 m（G-gun）
Recording System Data Control and Acquisition System IT. I Galileo Marine Acquisition System IT. I Galileo Marine Acquisition System
Sampling Rate 4ms 4 ms
Record Length 20s 13.5 s
Filter Low cut : N/A
High cut : N/A
Recording Format SEG-D（Code8058) SEG-D（Code8058)
Number of Fold 0.75Fold (Standard) 3 Fold (Standard)
Navigation Navigation Controller Concept Systems SPECTRA
Navigation System DGPS
Coordinate System WGS－84
Projection Zone 54N
Output Format UKOOA P1/90
Ocean Bottom Seismograph KATSUJIMA POBS-150
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