Marine Geoscience Data System

Seismic Reflection/Refraction Data at the Academic Seismic Portal

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Expeditions / Compilations

MGL1112

Marcus G. Langseth

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Acquisition Information

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Seismic:Navigation

Data DOI: 10.1594/IEDA/321144

Processed Seismic Navigation Data from the Chukchi Sea, Arctic Ocean, acquired during the R/V Marcus G. Langseth expedition MGL1112 (2011)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

Events

Line Log

Locale

File Format

Quality

Details

These processed (quality=1) P190 navigation files should be used for processing the MCS data.

Coakley, Bernard

University of Alaska-Fairbanks

Seismic:Reflection:MCS

Data DOI: 10.1594/IEDA/318256

Multi-Channel Seismic Shot Data from the Chukchi Sea, Arctic Ocean, acquired during the R/V Marcus G. Langseth expedition MGL1112 (2011)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Events

Line Log

Locale

File Format

SEGD

Quality

Coakley, Bernard

University of Alaska-Fairbanks

Data Set References

Event Logs

Line (MGL1112)

Device Info

Related Devices

Coakley, Bernard

University of Alaska-Fairbanks

Line (MGL1112)

Device Info

Seismic:MCS

Platform: Marcus G. Langseth (Array)

Seismic:Sonobuoy

Platform: Marcus G. Langseth (Array)

Coakley, Bernard

University of Alaska-Fairbanks

Station:Surface:Deployed (MGL1112)

Device Info

Related Devices

Coakley, Bernard

University of Alaska-Fairbanks

Station:Surface:Deployed (MGL1112)

Device Info

Related Devices

Coakley, Bernard

University of Alaska-Fairbanks

Station:WaterColumn:Released (MGL1112)

Device Info

Probe:Expendable:XBT

Sippican:T-5

Platform: Marcus G. Langseth

Coakley, Bernard

University of Alaska-Fairbanks

Station:WaterColumn:Released (MGL1112)

Device Info

Probe:Expendable:XBT

Sippican:T-7

Platform: Marcus G. Langseth

Coakley, Bernard

University of Alaska-Fairbanks

Seismic Acquisition Parameters

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MGL1112_ACQ001 (Lines: Sequence 1,2,6,7,8,14-18,22-27,36-44,47,49,53,55-59,67-76)

Source Information

AirGun (BOLT:1500LL)

Source Number: 10

Volume (cu in): 1830

Pressure (psi): 2000

Distance to Near Channel (m): 226.7

Distance to Antenna (m): 83.3

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 468

Channels Recorded: 468

Group Spacing (m): 12.5

Cable Length (m): 5850

Cable Depth (m): 9

Near Channel Number: 468

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav 3050 primary

WGS84

Acquisition System

Digital

Name: Sercel Syntrak 960

Sample Interval (msec): 2

Details

Source Depth is 9m for lines sequence 1-5

Source Depth is 6m for all other lines

Record Length is 12s for lines sequence 1-5 and 57

Record Length is 10s for all other lines

Shot Control is Distance of 37.5m for lines sequence 1,2,6,7,8,14-18,22,23,25,27,36-40,42,44,47,49,53,55-58,67,68,70-76

Shot Control is Time of 12.8s for lines 24 and 26

Shot Control is Time of 12.0s for lines 41,53,59 and 69

MGL1112_ACQ002 (Lines: Sequence 3-5,9-13,19-21,28-35,45,46,48,50-52,54,60-66)

Source Information

AirGun (BOLT:1500LL)

Source Number: 10

Volume (cu in): 1830

Pressure (psi): 2000

Distance to Near Channel (m): 206.7

Distance to Antenna (m): 103.3

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 468

Channels Recorded: 468

Group Spacing (m): 12.5

Cable Length (m): 5850

Cable Depth (m): 9

Near Channel Number: 468

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav 3050 primary

WGS84

Acquisition System

Digital

Name: Sercel Syntrak 960

Sample Interval (msec): 2

Details

Source Depth is 9m for lines sequence 1-5

Source Depth is 6m for all other lines

Record Length is 12s for lines sequence 1-5 and 57

Record Length is 10s for all other lines

Shot Control is Distance of 37.5m for lines sequence 3,4,5,9-13,19,28,29,32,34,35,45,46,48,50,51,52,54,62,64,66

Shot Control is Time of 12.8s for lines 20 and 21

Shot Control is Time of 12.0s for lines 30,31,33,60,61,63,65

org.marine-geo:MGL1112_ACQ001 (Lines: )

Source Information

AirGun

Receiver Information

Hydrophone:Streamer

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav 3050 primary

WGS84

Acquisition System

Digital

Name: Sercel Syntrak 960

Details

Receiver Type: Hydrophone_Streamer

Source Type: SeismicSource_Gun_Air

Acquisition System Name: Sercel Syntrak 960

Acquisition System Type: digital

Seismic Nav System: C-Nav 3050 primary

Survey Datum: WGS84

Source to Near Channel (m): 226.7: lines 1,2,6,7,8,14-18,22-27,36-44,47,49,53,55-59,67-76; 206.7: lines 3-5,9-13,19-21,28-35,45,46,48,50-52,54,60-66

Antenna to Source (m): 83.3: lines 1,2,6,7,8,14-18,22-27,36-44,47,49,53,55-59,67-76; 103.3: lines 3-5,9-13,19-21,28-35,45,46,48,50-52,54,60-66

Number of Channels Recorded: 468

Channel Length (m): 12.5

Cable Receiver Depth (m): 9

Source Volume (cubicInches): 1830

Source Pressure (bars): 138

Source Number: 1

Source Depth (m): 9: lines sequence 1-5; 6: all other lines

Shot Control: time

Shot Interval (s or m): 13

Compass Birds: yes

Tail Buoy Positioning: yes

Recording Delay: no

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