MGL1307 - Marine Geoscience Data System

Sensor Data

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Bathymetry:Swath

Device Info

Sonar:Multibeam

Marcus G. Langseth

Repository

NOAA:NCEI

Format

MBSystem

Sawyer, Dale

Rice

Gravity:Field

Device Info

Gravimeter

Marcus G. Langseth

Repository

NOAA:NCEI

Format

ASCII

Sawyer, Dale

Rice

Magnetic:Field

Device Info

Magnetometer

Marcus G. Langseth

Repository

NOAA:NCEI

Format

ASCII

Sawyer, Dale

Rice

Navigation:Primary

Device Info

Navigation

Marcus G. Langseth

Repository

R2R

Format

R2R:Nav

Sawyer, Dale

Rice

Seismic Reflection/Refraction

(Image Seismic, Segy)

Device Info

Seismic:MCS

Array:Marcus G. Langseth

Repository

MGDS

Format

ASCII, P1, P2, PDF, SEGD, SEGY

Sawyer, Dale

Rice

Reston, Tim

University of Birmingham

Ranero, Cesar

CSIC:Institut de Ciences del Mar

Shillington, Donna

LDEO

Morgan, Julia

Rice

Related References

Seismic:Active:Subbottom

Device Info

Seismic:Subbottom

Marcus G. Langseth

Repository

NOAA:NCEI

Format

KEB

Sawyer, Dale

Rice

Temperature, Velocity:Sound

Device Info

Probe:Expendable:XBT

Marcus G. Langseth

Repository

NOAA:NCEI

Repository

MGDS

Format

ASCII, EDF

Sawyer, Dale

Rice

Event Logs

Line

Device Info

Related Devices

Sawyer, Dale

Rice

Line

Device Info

Seismic:MCS

Platform: Marcus G. Langseth (Array)

Sawyer, Dale

Rice

Station:WaterColumn:Released

Device Info

Probe:Expendable:XBT

Sippican:T-5

Platform: Marcus G. Langseth

Sawyer, Dale

Rice

Seismic Acquisition Parameters

Download As Text

MGL1307_ACQ001 (Lines: Sequences shot by Distance: 1-44,46,48,50,52,54,56,58,60,62,64,66,68,69,70,72,74,76,78,79,80,82,83,85,87,88,89,91,93,94,96,97,98,100,101)

Source Information

AirGun (BOLT:1500LL)

Source Number: 18

Volume (cu in): 3300

Pressure (psi): 2000

Depth (m): 9

Distance to Near Channel (m): 210

Distance to Antenna (m): 270

Number of Arrays: 2

Source Array Separation (m): 100

Receiver Information

Hydrophone:Streamer

Group Spacing (m): 12.5

Cable Spacing (m): 200

Cable Length (m): 6000

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

Shot Spacing for Sequence 2 was 75m

Shot Spacing for Sequences 25,31,36,38 was 150m

Shot Spacing for all other sequences with distance shooting was 37.5m

Record Length for Sequences 1-41 was 15360ms

Record Length for Sequences 42-101 was 13824ms

All lines used 4 streamers except Sequence 28 was reduced to 3 streamers at SP 5858 and continued through Sequence 29

Cable Depth was 12m for Sequences 1-3

Cable Depth varied from 12m-15m for Sequence 4

Cable Depth was 15m for Sequences 5-101

Near Channel Numbers were 468,936,1404,1872 for Sequences 1-27,30-68

Near Channel Numbers were 468,936,1404 for Sequences 28 (after SP 5857) and 29

Near Channel Numbers were 368,816,1284,1752 for Sequences 69-101 after an electronics failure in Cable 1

Number of Channels Recorded for Sequences 1-27,30-41,42-68 was 1872

Number of Channels Recorded for Sequences 28 (after SP 5857) and 29 was 1404

Number of Channels Recorded for Sequences 69-101 was 1752 after an electronics failure in Cable 1

MGL1307_ACQ002 (Lines: Sequences shot by Time: 45,47,49,51,53,55,57,59,61,63,65,67,71,73,75,77,81,84,86,90,92,95,99)

Source Information

AirGun (BOLT:1500LL)

Source Number: 18

Volume (cu in): 3300

Pressure (psi): 2000

Depth (m): 9

Distance to Near Channel (m): 210

Distance to Antenna (m): 270

Number of Arrays: 2

Source Array Separation (m): 100

Receiver Information

Hydrophone:Streamer

Number of Cables: 4

Group Spacing (m): 12.5

Cable Spacing (m): 200

Cable Length (m): 6000

Cable Depth (m): 15

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

Record Length (sec): 13.824

Details

Shot Spacing for Sequences 47,61,65,71,77,86 was 30s

Shot Spacing for all other sequences shot by time was 60s

Near Channel Numbers were 468,936,1404,1872 for Sequences 1-27,30-68

Near Channel Numbers were 468,936,1404 for Sequences 28 (after SP 5857) and 29

Near Channel Numbers were 368,816,1284,1752 for Sequences 69-101 after an electronics failure in Cable 1

Number of Channels Recorded for Sequences 1-27,30-41,42-68 was 1872

Number of Channels Recorded for Sequences 28(after SP 5857) and 29 was 1404

Number of Channels Recorded for Sequences 69-101 was 1752 due to an electronics failure in Cable 1

References

Bayrakci et al., 2016 Fault-controlled hydration of the upper mantle during continentalÂ rifting Nat. Geosci. 9. doi: 10.1038/ngeo2671

Boddupalli et al., 2021 Comparison of 2-D and 3-D full waveform inversion imaging using wide-angle seismic data from the Deep Galicia Margin Geophys. J. Int. 227. doi: 10.1093/gji/ggab164

Davy et al., 2016 Continental hyperextension, mantle exhumation, and thin oceanic crust at the continent-ocean transition, West Iberia: New insights from wide-angle seismic JGR Solid Earth 121. doi: 10.1002/2016JB012825

Dean et al., 2015 Galicia Bank ocean-continent transition zone: New seismic reflection constraints Earth and Planetary Science Letters 413. doi: 10.1016/j.epsl.2014.12.045

Dean, 2014 Tectonic and gravitational fold and thrust belts: Insights from discrete element simulations and Galicia Bank ocean-continent transition zone: New seismic reflection constraints Thesis .

Lymer et al., 2019 3D development of detachment faulting during continental breakup Earth and Planetary Science Letters 515. doi: 10.1016/j.epsl.2019.03.018

Schuba et al., 2018 A low-angle detachment fault revealed: Three-dimensional images of the S-reflector fault zone along the Galicia passive margin Earth and Planetary Science Letters 492. doi: 10.1016/j.epsl.2018.04.012

Schuba et al., 2019 Origin of Serpentinization Patterns Beneath the S-Reflector Detachment Fault in the Galicia Margin, Offshore Spain Geochem Geophys Geosyst 20. doi: 10.1029/2019GC008400

Theunissen and Huismans, 2022 Mantle exhumation at magma-poor rifted margins controlled by frictional shear zones Nat Commun 13. doi: 10.1038/s41467-022-29058-1

Scientific Personnel

Accardo, Natalie

Student:Graduate

LDEO

Andres-Martinez, Miguel

Student:Graduate

Royal Holloway, University of London

Bayrakci, Gaye

Scientist

NOC

Coates, Katherine

Student:Undergraduate

NOC

Danbom, Steve

Scientist

Rice

Dean, Sarah

Student:Graduate

Rice

Gibson, James

Student:Graduate

LDEO

Gregory, Tessa

Student:Undergraduate

NOC

Holroyd, Luke

Student:Graduate

University of Birmingham

Jordan, Brian

Student:Graduate

Rice

Karplus, Marianne

Scientist

NOC

Klaeschen, Dirk

Scientist

GEOMAR

Marjanovic, Milena

Scientist

LDEO

Merry, Tobias

Student:Graduate

University of Birmingham

Minshull, Timothy A.

Investigator
(not in field)

NOC

Morgan, Julia

Scientist:Investigator:Co-Principal
(not in field)

Rice

Papenberg, Cord

Scientist

GEOMAR

Ranero, Cesar

Scientist:Co-Chief

CSIC:Institut de Ciences del Mar

Reston, Tim

Scientist:Co-Chief

University of Birmingham

Sawyer, Dale

Scientist:Chief

Rice

Shillington, Donna

Scientist:Co-Chief

LDEO

Shukla, Kemraj

Student:Graduate

Oklahoma State University

Tauscheck-Zielinski, Joao-Pedro

Student:Undergraduate

UCM

Tesi-Sanjurjo, Mari

Student:Graduate

Rice

Support Personnel

Cameron, Dara

Observer:MarineMammal

RPS

Curtis, Klayton

Technician:MCS

NCS SubSea

Ellis, Emily

Observer:MarineMammal

RPS

Garza, Rebeca

Observer:MarineMammal

RPS

Grey, Mattthew

Technician:MCS