Marine Geoscience Data System

Seismic Reflection/Refraction Data at the Academic Seismic Portal

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Expeditions / Compilations

TN283

Thomas G. Thompson

OC1206A

Oceanus

MGL1211

Marcus G. Langseth

Processed

Raw

Acquisition Information

Raw Data Sets

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Seismic:Navigation:ShotTime

Data DOI: 10.1594/IEDA/319006

Seismic Shot Point Navigation Data from the Cascadia Subduction Zone acquired during R/V Marcus G. Langseth expedition MGL1211 (2012)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:OBS

Events

Line Log

Station:Bottom Log

Station:Bottom:Recovered Log

Station:Bottom:Deployed Log

Locale

Cascadia

FocusSite:GeoPRISMS

File Format

ASCII

Quality

Details

Spectra shot logs for MCS and OBS lines

Carbotte, Suzanne

LDEO

Canales, JuanPablo

WHOI

Carton, Hélène

LDEO

Nedimovic, Mladen

Dalhousie

Seismic:Reflection:MCS

Data DOI: 10.1594/IEDA/319000

Multi-Channel Seismic Shot Data from the Cascadia Subduction Zone acquired during the R/V Marcus G. Langseth expedition MGL1211 (2012)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Events

Line Log

Locale

Cascadia

FocusSite:GeoPRISMS

File Format

SEGD

Quality

Carbotte, Suzanne

LDEO

Canales, JuanPablo

WHOI

Carton, Hélène

LDEO

Nedimovic, Mladen

Dalhousie

Data Set References

Event Logs

Line (MGL1211)

Device Info

Related Devices

Carbotte, Suzanne

LDEO

Line (MGL1211)

Device Info

Seismic:MCS

Platform: Marcus G. Langseth (Array)

Carbotte, Suzanne

LDEO

Station:Bottom (OC1206A)

Device Info

Related Devices

Canales, JuanPablo

WHOI

Station:Bottom:Deployed (OC1206A)

Device Info

Related Devices

Canales, JuanPablo

WHOI

Station:Bottom:Recovered (TN283)

Device Info

Related Devices

Canales, JuanPablo

Station:WaterColumn:Released (MGL1211)

Device Info

Probe:Expendable:XBT

Sippican:T-5

Platform: Marcus G. Langseth

Carbotte, Suzanne

LDEO

Station:WaterColumn:Released (MGL1211)

Device Info

Probe:Expendable:XBT

Sippican:T-7

Platform: Marcus G. Langseth

Carbotte, Suzanne

LDEO

Station:WaterColumn:Released (MGL1211)

Device Info

Probe:Expendable:XBT

Sippican:T-4

Platform: Marcus G. Langseth

Carbotte, Suzanne

LDEO

Station:WaterColumn:Released (MGL1211)

Device Info

Probe:Expendable:XSV

Sippican:XSV-02

Platform: Marcus G. Langseth

Carbotte, Suzanne

LDEO

Seismic Acquisition Parameters

Download As Text

MGL1211_ACQ001 (Lines: Sequences 1-6, 28-41)

Source Information

AirGun (BOLT:1500LL)

Source Number: 40

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 12

Number of Arrays: 1

Receiver Information

Seismic:OBS

Nav System

C-Nav 3050

WGS84

Acquisition System

Digital

Details

Shots were recorded by Ocean Bottom Seismometers (OBS)

Shot Interval for Sequences 1-6, 28, 29, 41 was 500m

Shot Interval for Sequences 30-40 was 170m

MGL1211_ACQ002 (Lines: Sequences 7-15)

Source Information

AirGun (BOLT:1500LL)

Source Number: 40

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 9

Distance to Near Channel (m): 172

Distance to Antenna (m): 232

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): 12.288

Details

Shot Interval for Sequences 07-13 was 37.5m

Shot Interval for Sequence 14 was 150m

MGL1211_ACQ003 (Lines: Sequences 16-27)

Source Information

AirGun (BOLT:1500LL)

Source Number: 40

Pressure (psi): 2000

Depth (m): 9

Distance to Near Channel (m): 272

Distance to Antenna (m): 232

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): 12.288

Details

Shot Interval for Sequences 16-22 was 37.5m

Shot Interval for Sequence 23 and 27 was 500m

Shot Interval for Sequences 24-26 was 150m

Sequences 23-27 were also recorded by OBS

Source Volume for Sequence 21 was 3300cu.in.

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