MGL1109 Conductivity, Temperature

Raw ship-based Thermosalinograph Data from the Gulf of Alaska acquired during the Marcus G. Langseth expedition MGL1109 (2011)

This data set was acquired with a ship-based Sea-Bird SBE-23 Thermosalinograph during Marcus G. Langseth expedition MGL1109 conducted in 2011 (Chief Scientist: Dr. Ginger Barth; Investigator(s): Dr. Jonathan Childs). These data files are in ASCII TSG format and include Conductivity and Temperature data that have not been processed. Data were acquired as part of the project(s): US Extended Continental Shelf Project.

Childs, Jonathan

Investigator

USGS

Device Info

Thermosalinograph

Sea-Bird:SBE-23

Platform

Marcus G. Langseth

LDEO

Quality

Data have not been processed or modified since acquisition (e.g. Realtime navigation or sonar data, raw images etc.).

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Data Files

Documents

ISO/XML Metadata

Seismic Acquisition Parameters

Download as Text: MGL1109

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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