Marine Geoscience Data System

Seismic Reflection/Refraction Data at the Academic Seismic Portal

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Expeditions / Compilations

Norseman_1101

Norseman II

MGL1109

Marcus G. Langseth

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Acquisition Information

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Seismic:Navigation:ShotTime

Data DOI: 10.1594/IEDA/317665

Seismic Shot Point Navigation Data from the Gulf of Alaska acquired during the Marcus G. Langseth expedition MGL1109 (2011)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:OBS

Events

Station:Bottom:Deployed Log

Line Log

Locale

Alaska:GulfOfAlaska

Gulf

File Format

ASCII

Quality

Details

Spectra shot logs

Barth, Ginger

USGS

Gulick, Sean

UTIG

Childs, Jonathan

USGS

Seismic:WideAngle, Seismic:WideAngle:OBS

Data at IRIS

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:OBS

WHOI:D2

Events

Station:Bottom:Deployed Log

Line Log

Locale

Alaska:GulfOfAlaska

Gulf

File Format

NotProvided

Quality

Details

Seismic refraction data obtained from OBSs that were deployed on cruise Norseman_1101 with shots fired from Langseth cruise MGL1109.

Tate, George

Barth, Ginger

USGS

Childs, Jonathan

USGS

Event Logs

Line (MGL1109)

Device Info

Related Devices

Barth, Ginger

USGS

Line (MGL1109)

Device Info

Seismic:MCS

Platform: Marcus G. Langseth (Array)

Seismic:OBS

Platform: Marcus G. Langseth (Array)

Barth, Ginger

USGS

Station:Bottom:Deployed (Norseman_1101)

Device Info

Related Devices

Tate, George

USGS

Station:WaterColumn:Released (MGL1109)

Device Info

Probe:Expendable:XBT

Sippican:T-5

Platform: Marcus G. Langseth

Childs, Jonathan

USGS

Station:WaterColumn:Released (MGL1109)

Device Info

Probe:Expendable:XBT

Sippican:T-7

Platform: Marcus G. Langseth

Childs, Jonathan

USGS

Station:WaterColumn:Released (MGL1109)

Device Info

Probe:Expendable:XCTD

Sippican:XCTD-1

Platform: Marcus G. Langseth

Childs, Jonathan

USGS

Station:WaterColumn:Released (MGL1109)

Device Info

Probe:Expendable:XCTD

Sippican:XCTD-2

Platform: Marcus G. Langseth

Childs, Jonathan

USGS

Seismic Acquisition Parameters

Download As Text

MGL1109_ACQ001 (Lines: MCS lines 1-14)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 6600

Depth (m): 9

Distance to Near Channel (m): 176

Distance to Antenna (m): 399.1

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 primary

WGS84

Acquisition System

Digital

Name: Syntron Syntrak 960

Sample Interval (msec): 2

Record Length (sec): 16

Details

Line 5 (MCS04A) was shot by Time at 30 second intervals, lines 1-4 and 5-15 were shot by Distance at 50m spacing

Airguns Bolt 1500LL and 1900LL were used.

MGL1109_ACQ002 (Lines: Lines 15 and 16)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 6600

Depth (m): 9

Shot Interval (m): 150

Distance to Near Channel (m): 176

Distance to Antenna (m): 399.1

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Group Spacing (m): 12.5

Cable Depth (m): 9

Near Channel Number: 636

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav 3050 primary

WGS84

Acquisition System

Digital

Name: Syntron Syntrak 960

Sample Interval (msec): 2

Record Length (sec): 16

Details

Lines 15 and 16 were also recorded by OBS

At Line 16 shotpoint 2009, the streamer was shortened to 5850m (468 channels)

Airguns Bolt 1500LL and 1900LL were used.

MGL1109_ACQ003 (Lines: Lines 17-19)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 6600

Depth (m): 9

Shot Interval (m): 50

Distance to Near Channel (m): 176

Distance to Antenna (m): 399.1

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: Syntron Syntrak 960

Sample Interval (msec): 2

Record Length (sec): 16

Details

Airguns Bolt 1500LL and 1900LL were used.

org.marine-geo:MGL1109_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: Syntron Syntrak 960

Details

Receiver Type: Hydrophone_Streamer

Source Type: SeismicSource_Gun_Air

Acquisition System Name: Syntron Syntrak 960

Acquisition System Type: digital

Seismic Nav System: C-Nav 3050 primary

Survey Datum: WGS84

Source to Near Channel (m): 176

Antenna to Source (m): 399.1

Number of Channels Recorded: 636

Channel Length (m): 12.5

Cable Receiver Depth (m): null

Source Volume (cubicInches): 6600

Source Pressure (bars): null

Source Number: 36

Source Depth (m): 9

Shot Control: distance: lines 1-4, 5-19; time: line MCS04A

Shot Interval (s or m): 50m: lines 1-4, 5-14, 17-19; 150m: lines 15-16; 30s: line MCS04A

Compass Birds: yes

Tail Buoy Positioning: yes

Recording Delay: no

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