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Seismic Reflection/Refraction Data at the Academic Seismic Portal

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MGL1408

Marcus G. Langseth

Processed

Acquisition Information

Processed Data Sets

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Seismic:WideAngle:OBS

Broadband ocean bottom seismometer (BBOBS) data, off North Carolina, acquired during R/V Marcus G. Langseth expedition MGL1408 (2014) as part of the Eastern North America Community Seismic Experiment (ENAM CSE)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:OBS

Events

Line Log

Locale

File Format

PDF

Quality

vanAvendonk, Harm

UTIG

Data Set References

Seismic:WideAngle:OBS

Data DOI: 10.1594/IEDA/500110

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:OBS

Events

Line Log

Locale

File Format

SEGY

Quality

vanAvendonk, Harm

UTIG

Data Set References

Event Logs

Line (MGL1408)

Device Info

Related Devices

Shillington, Donna

LDEO

Line (MGL1408)

Device Info

Seismic:MCS

Platform: Marcus G. Langseth (Array)

Seismic:OBS

Platform: Marcus G. Langseth (Array)

Seismic:Seismometer

Platform: Marcus G. Langseth (Array)

Shillington, Donna

LDEO

Station:Bottom (EN546)

Device Info

Related Devices

vanAvendonk, Harm

UTIG

Seismic Acquisition Parameters

Download As Text

MGL1408_ACQ001 (Lines: Sequences 1,3,10,13,14,15)

Source Information

AirGun (BOLT:1500)

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 9

Shot Interval (m): 225

Distance to Near Channel (m): 307.5

Distance to Antenna (m): 216

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 636

Channels Recorded: 636

Group Spacing (m): 12.5

Cable Length (m): 8000

Cable Depth (m): 9

Near Channel Number: 636

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav3050 - Primary

WGS84

Acquisition System

Digital

Name: Sercel Syntrak 960

Sample Interval (msec): 2

Record Length (sec): 18

Details

Source Number was 36 airguns

MGL1408_ACQ002 (Lines: Sequences 2,4,5,6,11,12,16,17,18,23,24,25)

Source Information

AirGun (BOLT:1500)

Pressure (psi): 2000

Shot Interval (m): 50

Distance to Near Channel (m): 307.5

Distance to Antenna (m): 216

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 636

Channels Recorded: 636

Group Spacing (m): 12.5

Cable Length (m): 8000

Near Channel Number: 636

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav3050 - Primary

WGS84

Acquisition System

Digital

Name: Sercel Syntrak 960

Sample Interval (msec): 2

Record Length (sec): 18

Details

Source Volume = 6600cu in for Sequences 2,4,16,17,18,23

Source Volume = 3300cu in for Sequences 5,6,11,12,24,25

Source Volume = 6600cu in for Sequences 28 and 29

Source Volume = 3300cu in for Sequence 30

Source Number was 18 airguns for 3300cu.in. and 36 airguns for 6600cu.in.

Streamer Depth = 6m and Source Depth = 6m for Sequences 5,6,11,12,24,25

Streamer Depth = 9m and Source Depth = 9m for Sequences 2,4,16,17,18,23

MGL1408_ACQ003 (Lines: Sequences 7,8,9,19,20,21,22,26,27)

Source Information

AirGun (BOLT:1500)

Volume (cu in): 3300

Pressure (psi): 2000

Distance to Near Channel (m): 307.5

Distance to Antenna (m): 216

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): 6

Near Channel Number: 480

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav3050 - Primary

WGS84

Acquisition System

Digital

Name: Sercel Syntrak 960

Sample Interval (msec): 1

Record Length (sec): 9

Details

Shot Interval = 37.5m for Sequence 9

Shot Interval = 25m for Sequences 7,8,19,20,21,22,26,27

Source Number was 18 airguns for 3300cu.in.

MGL1408_ACQ004 (Lines: Sequences 28-30)

Source Information

AirGun (BOLT:1500)

Pressure (psi): 2000

Distance to Near Channel (m): 307.5

Distance to Antenna (m): 216

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 636

Channels Recorded: 636

Group Spacing (m): 12.5

Cable Length (m): 8000

Near Channel Number: 636

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav3050 - Primary

WGS84

Acquisition System

Digital

Name: Sercel Syntrak 960

Sample Interval (msec): 2

Record Length (sec): 18

Details

Shot Interval = 62.5m for Sequence 28

Shot Interval = 75m for Sequence 29

Shot Interval = 50m for Sequence 30

Source Depth = 9m and Streamer Depth = 9m for Sequences 28,29

Source Depth = 6m and Streamer Depth = 6m for Sequence 30

Source Volume = 6600cu.in. for Sequences 28 and 29

Source Volume = 3300cu in for Sequence 30

Source Number was 18 airguns for 3300cu.in. and 36 airguns for 6600cu.in.

org.marine-geo:MGL1408_ACQ001 (Lines: )

Source Information

AirGun

Receiver Information

NotApplicable

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

WGS84

Acquisition System

Digital

Name:

Details

Receiver Type: Hydrophone:Streamer

Source Type: SeismicSource_Gun_Air

Acquisition System Name: null

Acquisition System Type: null

Seismic Nav System: null

Survey Datum: WGS84

Source to Near Channel (m): 307.5

Antenna to Source (m): 216 (nav ref point to source)

Number of Channels Recorded: 636: lines mcs01, mcs01a, mcs01b, mcs02, mcs03, mcs31, mcs32, mcs41, mcs42, mcs04a, mcs0a4a, mcs04b, mcs62, mcs63, mcs71, obs01, obs01a, obs01b, obs03, obs04a, obs04b 480: lines mcs33, mcs34, mcs35, mcs52, mcs53, mcs57, mcs58, mcs63a, mcs64

Channel Length (m): 12.5

Cable Receiver Depth (m): 9: lines mcs01, mcs01a, mcs01b, mcs02, mcs03, mcs33, mcs34, mcs35, mcs04a, mcs0a4a, mcs04b, mcs52, mcs53, mcs57, mcs58, mcs63a, mcs64, obs01, obs01a, obs01b, obs03, obs04a, obs04b 6: lines mcs31, mcs32, mcs33, mcs34, mcs35, mcs41, mcs42, mcs52, mcs53, mcs57, mcs58, mcs62, mcs63, mcs63a, mcs64, mcs71

Source Volume (cubicInches): 6600: lines mcs01, mcs01a, mcs01b, mcs02, mcs03, mcs04a, mcs0a4a, mcs04b, obs01, obs01a, obs01b, obs03, obs04a, obs04b 3300: lines mcs31, mcs32, mcs33, mcs34, mcs35, mcs41, mcs42, mcs52, mcs53, mcs57, mcs58, mcs62, mcs63, mcs63a, mcs64, mcs71

Source Pressure (bars): null

Source Number: 20: lines mcs31, mcs32, mcs33, mcs34, mcs35, mcs41, mcs42, mcs52, mcs53, mcs57, mcs58, mcs62, mcs63, mcs63a, mcs64, mcs71 40: lines mcs01, mcs01a, mcs01b, mcs02, mcs03, mcs04a, mcs0a4a, mcs04b, obs01, obs01a, obs01b, obs03, obs04a, obs04b

Source Depth (m): 9: lines mcs01, mcs01a, mcs01b, mcs02, mcs03, mcs33, mcs34, mcs35, mcs04a, mcs0a4a, mcs04b, mcs52, mcs53, mcs57, mcs58, mcs63a, mcs64, obs01, obs01a, obs01b, obs03, obs04a, obs04b 6: lines mcs31, mcs32, mcs33, mcs34, mcs35, mcs41, mcs42, mcs52, mcs53, mcs57, mcs58, mcs62, mcs63, mcs63a, mcs64, mcs71

Shot Control: distance

Shot Interval (s or m): 25: lines mcs33, mcs34, mcs52, mcs53, mcs57, mcs58, mcs63a, mcs64 37.5: line mcs35 50: lines mcs01, mcs01a, mcs01b, mcs02, mcs03, mcs31, mcs32, mcs41, mcs42, mcs04b, mcs62, mcs63, mcs71 62.5: line mcs04a 75: line mcs0a4a 225: lines obs01, obs01a, obs01b, obs03, obs04a, obs04b

Compass Birds: yes

Tail Buoy Positioning: yes

Recording Delay: no

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