MGL1110 Conductivity, Temperature

Raw ship-based Thermosalinograph Data from the Alaska: Aleutians Focus Site: GeoPRISMS acquired during the Marcus G. Langseth expedition MGL1110 (2011)

This data set was acquired with a ship-based Sea-Bird SBE-23 Thermosalinograph during Marcus G. Langseth expedition MGL1110 conducted in 2011 (Chief Scientist: Dr. Donna Shillington). These data files are in ASCII TSG format and include Temperature and Conductivity data that have not been processed. Data were acquired as part of the project(s): Alaska/Aleutian megathrust and Megathrust seismic hazards by reflection mapping, and funding was provided by NSF grant(s): OCE09-26614.

Shillington, Donna

Investigator

LDEO

Device Info

Thermosalinograph

Sea-Bird:SBE-23

Platform

Marcus G. Langseth

LDEO

Awards

OCE09-26614

Quality

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

Report Incorrect Information

Data Files

Documents

ISO/XML Metadata

Seismic Acquisition Parameters

Download as Text: MGL1110

MGL1110_ACQ001 (Lines: Sequence numbers 8-10)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 12

Shot Interval (m): 62.5

Distance to Near Channel (m): 325.84

Distance to Antenna (m): 222.7

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 2

Channels Per Cable: 636

Channels Recorded: 1272

Group Spacing (m): 12.5

Cable Spacing (m): 450

Cable Length (m): 7950

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

CNAV 3050 - primary

WGS84

Acquisition System

Digital

Name: Syntron Syntrak 960

Sample Interval (msec): 2

Record Length (sec): 22.528

Details

Near channel numbers were 636 and 1272

Streamer 1 was towed at a depth of 9m, Streamer 2 at 12m

MGL1110_ACQ002 (Lines: Sequence numbers 11-26)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 12

Shot Interval (m): 62.5

Distance to Antenna (m): 222.7

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 2

Channels Per Cable: 636

Channels Recorded: 1272

Group Spacing (m): 12.5

Cable Spacing (m): 225

Cable Length (m): 7950

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

CNAV 3050 - primary

WGS84

Acquisition System

Digital

Name: Syntron Syntrak 960

Sample Interval (msec): 2

Details

Streamer 1 was towed at a depth of 9m, Streamer 2 at 12m

Streamer 1 was towed from the stern, distance from center of source to near group was 235.68m

Streamer 2 was towed from the paravane, distance from center of source to near group was 325.84m

Near channel numbers were Streamer 1: 636 and Streamer 2 : 1272

Lines 11-26 were recorded for 22.528s except for part of Line 24 which was recorded only for 18.430s

MGL1110_ACQ003 (Lines: Sequence numbers 27-33)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 12

Shot Interval (m): 62.5

Distance to Near Channel (m): 325.84

Distance to Antenna (m): 222.7

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): 12

Near Channel Number: 636

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

CNAV 3050 - primary

WGS84

Acquisition System

Digital

Name: Syntron Syntrak 960

Sample Interval (msec): 2

Details

Data was recorded by a single streamer, Streamer 2, towed from the paravane

Distance from center of source to near group was 325.84m

Lines 27-33 were recorded for 22.528s except for part of Line 29 which was recorded only for 18.430s

org.marine-geo:MGL1110_ACQ001 (Lines: )

Source Information

AirGun

Receiver Information

Hydrophone:Streamer

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

WGS84

Acquisition System

Digital

Name:

Details

Receiver Type: Hydrophone_Streamer

Source Type: SeismicSource_Gun_Air

Acquisition System Name: null

Acquisition System Type: null

Seismic Nav System: null

Survey Datum: WGS84

Source to Near Channel (m): 235.68

Antenna to Source (m): 222.7

Number of Channels Recorded: null

Channel Length (m): null

Cable Receiver Depth (m): null

Source Volume (cubicInches): 6600

Source Pressure (bars): null

Source Number: 10

Source Depth (m): null

Shot Control: null

Shot Interval (s or m): null

Compass Birds: no

Tail Buoy Positioning: no

Recording Delay: no

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