Marine Geoscience Data System

Seismic Reflection/Refraction Data at the Academic Seismic Portal

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Expeditions / Compilations

MGL1212

Marcus G. Langseth

Raw

Acquisition Information

Raw Data Sets

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Temperature, Velocity:Sound

Raw XBT Expendable Probe Data from the Cascadia Focus Site: GeoPRISMS acquired during the Marcus G. Langseth expedition MGL1212 (2012)

Platform Info

Marcus G. Langseth

LDEO

Device Info

Probe:Expendable:XBT

Sippican:T-7

Events

Station:WaterColumn:Released Log

Locale

Cascadia

FocusSite:GeoPRISMS

File Format

EDF

Quality

Holbrook, W. Steven

University of Wyoming

Temperature, Velocity:Sound

Raw XBT Expendable Probe Data from the Cascadia Focus Site: GeoPRISMS acquired during the Marcus G. Langseth expedition MGL1212 (2012)

Platform Info

Marcus G. Langseth

LDEO

Device Info

Probe:Expendable:XBT

Sippican:T-4

Events

Station:WaterColumn:Released Log

Locale

Cascadia

FocusSite:GeoPRISMS

File Format

EDF

Quality

Holbrook, W. Steven

University of Wyoming

Temperature, Velocity:Sound

Raw XBT Expendable Probe Data from the Cascadia Focus Site: GeoPRISMS acquired during the Marcus G. Langseth expedition MGL1212 (2012)

Platform Info

Marcus G. Langseth

LDEO

Device Info

Probe:Expendable:XBT

Sippican:T-5

Events

Station:WaterColumn:Released Log

Locale

Cascadia

FocusSite:GeoPRISMS

File Format

EDF

Quality

Holbrook, W. Steven

University of Wyoming

Event Logs

Line (MGL1212)

Device Info

Related Devices

Holbrook, W. Steven

University of Wyoming

Line (MGL1212)

Device Info

Seismic:MCS

Platform: Marcus G. Langseth (Array)

Holbrook, W. Steven

University of Wyoming

Station:WaterColumn:Released (MGL1212)

Device Info

Probe:Expendable:XBT

Sippican:T-5

Platform: Marcus G. Langseth

Holbrook, W. Steven

University of Wyoming

Station:WaterColumn:Released (MGL1212)

Device Info

Probe:Expendable:XBT

Sippican:T-7

Platform: Marcus G. Langseth

Holbrook, W. Steven

University of Wyoming

Station:WaterColumn:Released (MGL1212)

Device Info

Probe:Expendable:XBT

Sippican:T-4

Platform: Marcus G. Langseth

Holbrook, W. Steven

University of Wyoming

Station:WaterColumn:Released (MGL1212)

Device Info

Probe:Expendable:XCTD

Sippican:XCTD-1

Platform: Marcus G. Langseth

Holbrook, W. Steven

University of Wyoming

Seismic Acquisition Parameters

Download As Text

MGL1212_ACQ001 (Lines: Sequences 1-10, 25)

Source Information

AirGun (BOLT:1500LL)

Pressure (psi): 2000

Depth (m): 15

Shot Interval (m): 50

Distance to Near Channel (m): 264

Distance to Antenna (m): 240

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): 7950

Cable Depth (m): 15

Near Channel Number: 636

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav 3050

WGS84

Acquisition System

Digital

Name: Sercel Syntrak 960

Sample Interval (msec): 2

Record Length (sec): 16.384

Details

Source Volume was 6600 cu.in. for Sequences 1-10

Source Volume was 3300 cu.in. for Sequence 25

Source Number was not provided, but was likely 36 airguns for Sequences 1-10, and 18 airguns for Sequence 25

MGL1212_ACQ002 (Lines: Sequences 11-23, 24)

Source Information

AirGun (BOLT:1500LL)

Pressure (psi): 2000

Depth (m): 9

Shot Interval (m): 50

Distance to Near Channel (m): 264

Distance to Antenna (m): 240

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): 7950

Cable Depth (m): 9

Near Channel Number: 636

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav 3050

WGS84

Acquisition System

Digital

Name: Sercel Syntrak 960

Sample Interval (msec): 2

Record Length (sec): 16.384

Details

Source Volume was 6600 cu.in. for Sequences 11-23

Source Volume was 3300 cu.in. for Sequence 24

Source Number was not provided, but was likely 36 airguns for Sequences 11-23, and 18 airguns for Sequence 24

org.marine-geo:MGL1212_ACQ001 (Lines: )

Source Information

AirGun

Receiver Information

NotApplicable

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: null

Seismic Nav System: C-Nav 3050 primary

Survey Datum: WGS84

Source to Near Channel (m): 264

Antenna to Source (m): 240

Number of Channels Recorded: 636

Channel Length (m): 12.5

Cable Receiver Depth (m): 15: sequences1-20, 25; 9: seq 11-23, 24

Source Volume (cubicInches): 6600: seq 1-10, 11-23; 3300: seq 24, 25

Source Pressure (bars): 138

Source Number: 1

Source Depth (m): 15: sequences1-20, 25; 9: seq 11-23, 24

Shot Control: null

Shot Interval (s or m): null

Compass Birds: yes

Tail Buoy Positioning: yes

Recording Delay: no

org.marine-geo:mgl1212_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): 172: sequences 7-15; 272: sequences 16-27

Antenna to Source (m): 232

Number of Channels Recorded: 636

Channel Length (m): 12.5

Cable Receiver Depth (m): 9

Source Volume (cubicInches): 6600; 3300: sequence 21

Source Pressure (bars): 138

Source Number: 40

Source Depth (m): 9: sequences 7-15, 16-27

Shot Control: distance

Shot Interval (s or m): 37.5: sequences 7-13, 16-22, 150: seq 14, 24-26; 500: seq 23, 27

Compass Birds: yes

Tail Buoy Positioning: yes

Recording Delay: no

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