Marine Geoscience Data System

Marine Geoscience Data System

Seismic Reflection/Refraction Data at the Academic Seismic Portal

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Expeditions / Compilations

New Horizon

Marcus G. Langseth

Processed

Raw

Acquisition Information

Raw Data Sets

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Seismic:Navigation

Unprocessed Seismic Navigation Data (P1 format) from the Central America Subduction Zone, Pacific Ocean, acquired during R/V Marcus G. Langseth expedition MGL0807 (2008)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Events

Locale

CentralAmerica

SubductionZone

File Format

P1

Quality

0

Holbrook, W. Steven

University of Wyoming

vanAvendonk, Harm

UTIG

Lizarralde, Dan

WHOI

show

Data Set References

Seismic:Navigation

Data DOI: 10.1594/IEDA/309915

Seismic Navigation Data (P2 format) from the Central America Subduction Zone, Pacific Ocean, acquired during R/V Marcus G. Langseth expedition MGL0807 (2008)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Events

Locale

CentralAmerica

SubductionZone

File Format

P2

Quality

0

Holbrook, W. Steven

University of Wyoming

vanAvendonk, Harm

UTIG

Lizarralde, Dan

WHOI

show

Data Set References

Seismic:Navigation

Data DOI: 10.1594/IEDA/324600

Processed Seismic Navigation Data (P1 format) from the Central America margin collected during R/V Marcus G. Langseth expedition MGL0807 (2008)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Events

Locale

CentralAmerica

SubductionZone

File Format

P1

Quality

1

Details

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

Holbrook, W. Steven

University of Wyoming

vanAvendonk, Harm

UTIG

Lizarralde, Dan

WHOI

Seismic:Navigation:ShotTime

Seismic Shot Point Navigation Data from the Central America Subduction Zone, Pacific Ocean, acquired during R/V Marcus G. Langseth expedition MGL0807 (2008)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:OBS

Events

Station:Bottom Log

Locale

CentralAmerica

SubductionZone

File Format

ASCII

Quality

1

Details

Spectra shot logs

Holbrook, W. Steven

University of Wyoming

vanAvendonk, Harm

UTIG

Lizarralde, Dan

WHOI

show

Data Set References

Seismic:Reflection:MCS

Data DOI: 10.26022/IEDA/309913

Multi-Channel Seismic Shot Data from the Central America Subduction Zone Subduction acquired during R/V Marcus G. Langseth expedition MGL0807 (2008)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Events

Locale

CentralAmerica

SubductionZone

File Format

SEGY

Quality

0

Holbrook, W. Steven

University of Wyoming

vanAvendonk, Harm

UTIG

Lizarralde, Dan

WHOI

show

Data Set References

Event Logs

Device Info

show

Related Devices

Holbrook, W. Steven

University of Wyoming

Station:Bottom (TC2NH)

Device Info

show

Related Devices

Gregg, Patricia

WHOI

Station:Land (MGL0807)

vanAvendonk, Harm

UTIG

Station:WaterColumn:Released (MGL0807)

Device Info

Probe:Expendable:XCP

Sippican

Platform: Marcus G. Langseth

Holbrook, W. Steven

University of Wyoming

Station:WaterColumn:Released (MGL0807)

Device Info

Probe:Expendable:XCTD

Sippican:XCTD-1

Platform: Marcus G. Langseth

Holbrook, W. Steven

University of Wyoming

Station:WaterColumn:Released (MGL0807)

Device Info

Probe:Expendable:XBT

Sippican:T-5

Platform: Marcus G. Langseth

Holbrook, W. Steven

University of Wyoming

Station:WaterColumn:Released (MGL0807)

Device Info

Probe:Expendable:XBT

Sippican:T-7

Platform: Marcus G. Langseth

Holbrook, W. Steven

University of Wyoming

Seismic Acquisition Parameters

Download As Text

MGL0807_ACQ001 (Lines: 2, 3, 5, 7, 8, 9, 11, 13)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 9.6

Distance to Near Channel (m): 141.6

Distance to Antenna (m): 98.3

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 Primary

WGS84

Acquisition System

Digital

Name: Syntron Syntrak 960

Sample Interval (msec): 2

Details

Shot Spacing: 37.5m for sequence lines 02,07

50m for sequence line 02,03,05,08,09

100m for sequence line 11,13

Record Length: 10 secs for sequence line 07

14 secs for sequence line 08,09

15 secs for sequence line 02 (from shot 1276),03

16 secs for sequence line 02 (until shot 1270),05

20 secs for sequence line 11,13

MGL0807_ACQ002 (Lines: 14, 16, 18, 20, 22, 24, 26, 27, 29, 31, 32, 34-38, 40, 42-49)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 9.6

Distance to Near Channel (m): 139.3

Distance to Antenna (m): 100.6

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 636

Group Spacing (m): 12.5

Cable Length (m): 7950

Cable Depth (m): 6

Near Channel Number: 636

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav Primary

WGS84

Acquisition System

Digital

Name: Syntron Syntrak 960

Details

Shot Spacing: 25m for sequence line 14

37.5m for sequence lines 34-38,40

50m for sequence lines 29,31,32,42-49

100m for sequence line 20

150m for sequence lines 22,24,26,27

Sample Interval: 500 microsecs for sequence lines 34-38,40

2000 microsecs for sequence lines 16,18,20,22,24,26,27,29,31,32,42-49

Record Length: 8 secs for sequence line 14

10 secs for sequence lines 34-38,40

15 secs for sequence line 49

16 secs for sequence lines 22,24,26,27,29,31,32,42-48

20 secs for sequence lines 16,18,20

240 channels recorded for sequence lines 34-38,40

480 channels recorded for sequence line 14

636 channels recorded for sequence lines 16,18,20,22,24,26,27,29,31,32,42-49

MGL0807_ACQ003 (Lines: 51-56, 58, 59, 71-73,75-81)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 9.6

Distance to Near Channel (m): 139.3

Distance to Antenna (m): 150.6

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 636

Group Spacing (m): 12.5

Cable Length (m): 7950

Cable Depth (m): 6

Near Channel Number: 636

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav Primary

WGS84

Acquisition System

Digital

Name: Syntron Syntrak 960

Details

Shot Spacing: 25m for sequence lines 53-56,58,59,77-79

50m for sequence lines 52,64,73,76,80,81

150m for sequence lines 67,68,70,71,75

200m for sequence lines 61,65,69

250m for sequence lines 60,62,63,66

500m for sequence line 51

Sample Interval: 500 microsecs for sequence lines 77-79

1000 microsecs for sequence lines 52-59

2000 microsecs for sequence lines 51, 60-71,73-75,76,80,81

240 channels recorded for sequence lines 77-79

480 channels recorded for sequence lines 52-59

636 channels recorded for sequence lines 51,60-71,73-75,76,80,81

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