Marine Geoscience Data System

Seismic Reflection/Refraction Data at the Academic Seismic Portal

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EW0008

Maurice Ewing

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Acquisition Information

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Seismic:Ancillary

Ancillary data supporting Multi-channel Seismic study of the Blake Ridge, offshore eastern North America, acquired during R/V Maurice Ewing expedition EW0008 (2000)

Platform Info

Array:Maurice Ewing

LDEO

Device Info

Seismic:MCS

LDEO

Locale

File Format

ASCII

Quality

Holbrook, W. Steven

University of Wyoming

Seismic:Reflection:MCS

Data DOI: 10.1594/IEDA/317210

Raw Multi-Channel Seismic Shot Data from the Blake Ridge, offshore eastern North America, acquired during R/V Maurice Ewing expedition EW0008 (2000)

Platform Info

Array:Maurice Ewing

LDEO

Device Info

Seismic:MCS

Locale

File Format

SEGY

Quality

Holbrook, W. Steven

University of Wyoming

Pecher, Ingo

UTIG

Lizarralde, Dan

Georgia Institute of Technology

Data Set References

Event Logs

Line (EW0008)

Device Info

Related Devices

Holbrook, W. Steven

University of Wyoming

Line (EW0008)

Device Info

Seismic:MCS

Platform: Maurice Ewing (Array)

Holbrook, W. Steven

University of Wyoming

Seismic Acquisition Parameters

Download As Text

EW0008_ACQ001 (Lines: Sequences 12-70)

Source Information

AirGun (SERCEL:GI)

Source Number: 2

Volume (cu in): 210

Depth (m): 2.5

Shot Interval (m): 37.5

Distance to Near Channel (m): 181.65

Distance to Antenna (m): 53.4

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 324

Channels Recorded: 324

Group Spacing (m): 12.5

Cable Length (m): 4050

Cable Depth (m): 4

Near Channel Number: 324

Used Compass Birds: true

Nav System

GPS Trimble 4000DS plus Fugro

WGS84

Acquisition System

Digital

Name: SYNTRAK 480

Sample Interval (msec): 2

Record Length (sec): 10.24

Details

From the Data Reduction Summary: "The tailbuoy was logged continuously, but it never really worked."

EW0008_ACQ002 (Lines: Sequences 71-82,87.002-118)

Source Information

AirGun (SERCEL:GI)

Source Number: 2

Volume (cu in): 210

Depth (m): 2.5

Shot Interval (m): 37.5

Distance to Near Channel (m): 181.65

Distance to Antenna (m): 53.4

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 324

Channels Recorded: 324

Group Spacing (m): 12.5

Cable Length (m): 4050

Cable Depth (m): 4

Near Channel Number: 324

Used Compass Birds: true

Nav System

GPS Trimble 4000DS plus Fugro

WGS84

Acquisition System

Digital

Name: SYNTRAK 480

Sample Interval (msec): 2

Record Length (sec): 9.216

Details

EW0008_ACQ003 (Lines: Sequences 83-87.001)

Source Information

AirGun (SERCEL:GI)

Source Number: 2

Volume (cu in): 210

Depth (m): 2.5

Shot Interval (m): 37.5

Distance to Near Channel (m): 181.65

Distance to Antenna (m): 53.4

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 312

Channels Recorded: 312

Group Spacing (m): 12.5

Cable Length (m): 3090

Cable Depth (m): 4

Near Channel Number: 312

Used Compass Birds: true

Nav System

GPS Trimble 4000DS plus Fugro

WGS84

Acquisition System

Digital

Name: SYNTRAK 480

Sample Interval (msec): 2

Record Length (sec): 9.216

Details

EW0008_ACQ004 (Lines: Sequences 1-11,119-139)

Source Information

AirGun (SERCEL:GI)

Source Number: 2

Volume (cu in): 210

Depth (m): 2.5

Shot Interval (m): 37.5

Distance to Near Channel (m): 181.65

Distance to Antenna (m): 53.4

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 480

Channels Recorded: 480

Group Spacing (m): 12.5

Cable Length (m): 6000

Cable Depth (m): 4

Near Channel Number: 480

Used Compass Birds: true

Nav System

GPS Trimble 4000DS plus Fugro

WGS84

Acquisition System

Digital

Name: SYNTRAK 480

Sample Interval (msec): 2

Details

Record Length = 10.240 for sequences 1-11

Record Length = 9.216 for sequences 119-139

edu.utexas.ig:ew0008_acq001 (Lines: )

Source Information

NotApplicable

Receiver Information

Hydrophone:Streamer

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

GPS

WGS84

Acquisition System

Digital

Name: Syntrak 480

Details

Receiver Type: Hydrophone_Streamer

Source Type: SeismicSource_Gun_Air_GI; SeismicSource_Gun_Air

Acquisition System Name: Syntrak 480

Acquisition System Type: digital

Seismic Nav System: GPS

Survey Datum: WGS84

Source to Near Channel (m): 181.65

Antenna to Source (m): 53.4: GI: 48.8: Bolt

Number of Channels Recorded: 480: 2D lines;<br>324: 3D lines<br>36: OBS lines

Channel Length (m): 12.5

Cable Receiver Depth (m): 2.5 - 7: 2D shoot; 4: target depth for 3D shoot

Source Volume (cubicInches): 210: GI; 8540: bolt

Source Pressure (bars): null

Source Number: GI: 2<br>Bolt: 6

Source Depth (m): 2.5: GI on 2D; 3D lines; 5: GI on OBS lines; 5: Bolt on 2D; 3D and OBS lines

Shot Control: distance

Shot Interval (s or m): 37.5: 2D and 3D; 20: OBS

Compass Birds: no

Tail Buoy Positioning: no

Recording Delay: no

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