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Seismic Acquisition Parameters

Download as Text: RC2607

RC2607_ACQ001 (Lines: 506,522,533-587 (CDP Lines 01-57) Conrad only)

Source Information

AirGun (BOLT)

Source Number: 4

Volume (cu in): 1864

Pressure (psi): 2000

Depth (m): 3

Shot Interval (sec): 20

Distance to Near Channel (m): 280

Distance to Antenna (m): 48

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 48

Channels Recorded: 48

Group Spacing (m): 50

Cable Length (m): 2400

Cable Depth (m): 12

Near Channel Number: 48

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

GPS, Transit Satellite

WGS72

Acquisition System

Digital

Name: DFSIV

Sample Interval (msec): 4

Record Length (sec): 12

Details

ACQ001 - CDP lines (Conrad only)

RC2607 was a 2-ship cruise with the R/V Thomas Washington. The line numbers assigned at sea were incorrect. Add 4 to the cruise-report line number

to get the line number used in the archived filename.

The CDP and WAP segy files are archived as cdp gathers (25 meter bins). The shot number for each trace is in bytes 9-12 of the SEG-Y trace header.

RC2607_ACQ002 (Lines: 507-515,523-532 (WAP 01-13))

Source Information

AirGun (BOLT)

Source Number: 4

Volume (cu in): 1864

Pressure (psi): 2000

Depth (m): 3

Shot Interval (sec): 30

Distance to Near Channel (m): 280

Distance to Antenna (m): 48

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 48

Channels Recorded: 48

Group Spacing (m): 50

Cable Length (m): 2400

Cable Depth (m): 12

Near Channel Number: 48

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

GPS,Transit Satellite

WGS72

Acquisition System

Digital

Name: DFSIV

Sample Interval (msec): 4

Record Length (sec): 20

Details

ACQ002 - Wide Aperture reflection Lines 507-515, 523-532 (WAP Lines 01-13)

RC2607 was a 2-ship cruise with the R/V Thomas Washington. The line numbers assigned at sea were incorrect. Add 4 to the cruise-report line number

to get the line number used in the archived filename.

The CDP and WAP segy files are archived as CDP gathers (25 meter bins). The shot number for each trace is in bytes 9-12 of the SEG-Y trace header.

Conrad was the lead ship, followed by Washington at about 5200 meters. The ships alternated shooting. Each ship shot once per min, one ship on the minute, the other on the half minute. Conrad recorded all shots.

The shotnav files for WAP lines include the ship to ship range (antenna to antenna)for that shot and a flag indicating which ship was shooting (1-Conrad or 2-Washington).

Antenna to Source: 48m (Conrad), 42m (Washington)

Source Depth: 3m (Conrad), 5m (Washington)

Source Number: 4 (Conrad), 4 (Washington)

Source Volume: See Cruise Report for Conrad, 2145 cu. in. for Washington

Source Source Pressure: 2000psi (Conrad), 1800psi (Washington)

RC2607_ACQ003 (Lines: 498-505,516-521,530,531 (ESP 01-16))

Source Information

AirGun (BOLT)

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 48

Channels Recorded: 48

Group Spacing (m): 50

Cable Length (m): 2400

Cable Depth (m): 12

Near Channel Number: 48

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

Acquisition System

Digital

Name: DFSIV

Details

ACQ003 Expanding Spread Profile Refraction Lines 498-505,516-521,530,531 (ESP Lines 01-16). Various configurations of airguns and explosives were used for ESPs. See cruise report for details.

The line numbers assigned at sea were incorrect. Add 4 to the cruise-report line number to get the line number used in the archived filename.

RC2607 Documents

Science Report

Cruise

RC2607_science_rpt.pdf (1.0MB)

PDF

Technical Report

Seabeam

RC2607_seabeam_rpt.pdf (181.0kB)

PDF

Watchstander Log

Seismic recording log