Marine Geoscience Data System

Seismic Reflection/Refraction Data at the Academic Seismic Portal

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Expeditions / Compilations

EW0005

Maurice Ewing

Raw

Acquisition Information

Raw Data Sets

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Backscatter:Acoustic, Bathymetry:Swath

Data at NOAA:NCEI

Platform Info

Maurice Ewing

LDEO

Device Info

Sonar:Multibeam

Atlas:Hydrosweep DS

Locale

CentralAmerica

SubductionZone

File Format

MBSystem

Quality

McIntosh, Kirk

UTIG

Backscatter:Acoustic, Bathymetry:Swath

Data DOI: 10.1594/IEDA/303120

Raw ship-based Multibeam Sonar Data from the Central America Subduction Zone acquired during R/V Maurice Ewing expedition EW0005 (2000)

Platform Info

Maurice Ewing

LDEO

Device Info

Sonar:Multibeam

Atlas:Hydrosweep DS

Locale

CentralAmerica

SubductionZone

File Format

MBSystem

Quality

McIntosh, Kirk

UTIG

Event Logs

Line (EW0005)

Device Info

Related Devices

McIntosh, Kirk

UTIG

Line (EW0005)

Device Info

Seismic:MCS

Platform: Maurice Ewing (Array)

McIntosh, Kirk

UTIG

Seismic Acquisition Parameters

Download As Text

EW0005_ACQ001 (Lines: Sequences 06-07, 24-34, 36-38)

Source Information

AirGun (BOLT:1500C)

Source Number: 20

Volume (cu in): 6817

Pressure (psi): 2000

Shot Interval (m): 50

Distance to Near Channel (m): 188

Distance to Antenna (m): 56

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 240

Channels Recorded: 240

Group Spacing (m): 25

Cable Length (m): 6000

Cable Depth (m): 10

Near Channel Number: 240

Used Compass Birds: true

Nav System

Trimble Tasman Y-code GPS

WGS84

Acquisition System

Digital

Name: Syntrak 480

Sample Interval (msec): 4

Details

Record Length was 4 seconds for sequences 02, 03, 05-12, 14, 15, 16(SP 1-1425), 17-26, 27(SP 1-3003), 29(SP 953-2994), 30, 31(SP 2097-3039), 32, 33(SP 1235-2667), 34-38

Record Length was 5 seconds for sequences 01, 04, 13, 16(SP 1426-1447), 27(SP 3005-3688), 28, 29(SP 1-946), 31(SP 2097-3039), 33(SP 1-1225)

EW0005_ACQ002 (Lines: Sequences 02-05, 08-12, 14-23)

Source Information

AirGun (BOLT:1500C)

Source Number: 20

Volume (cu in): 6817

Pressure (psi): 2000

Shot Interval (sec): 20

Distance to Near Channel (m): 188

Distance to Antenna (m): 56

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 240

Channels Recorded: 240

Group Spacing (m): 25

Cable Length (m): 6000

Cable Depth (m): 10

Near Channel Number: 240

Used Compass Birds: true

Nav System

Trimble Tasman Y-code GPS

WGS84

Acquisition System

Digital

Name: Syntrak 480

Sample Interval (msec): 4

Details

Shot Interval of 20 seconds is about 50 meters

Record Length was 4 seconds for sequences 02, 03, 05-12, 14, 15, 16(SP 1-1425), 17-26, 27(SP 1-3003), 29(SP 953-2994), 30, 31(SP 2097-3039), 32, 33(SP 1235-2667), 34-38

Record Length was 5 seconds for sequences 01, 04, 13, 16(SP 1426-1447), 27(SP 3005-3688), 28, 29(SP 1-946), 31(SP 2097-3039), 33(SP 1-1225)

EW0005_ACQ003 (Lines: Sequences 01, 13)

Source Information

AirGun (BOLT:1500C)

Source Number: 20

Volume (cu in): 6817

Pressure (psi): 2000

Shot Interval (sec): 60

Distance to Near Channel (m): 188

Distance to Antenna (m): 56

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 240

Channels Recorded: 240

Group Spacing (m): 25

Cable Length (m): 6000

Cable Depth (m): 10

Near Channel Number: 240

Used Compass Birds: true

Nav System

Trimble Tasman Y-code GPS

WGS84

Acquisition System

Digital

Name: Syntrak 480

Sample Interval (msec): 4

Record Length (sec): 5

Details

Shot Interval of 60 seconds is about 125 meters

EW0005_ACQ004 (Lines: Sequence 35)

Source Information

AirGun (BOLT:1500C)

Source Number: 20

Volume (cu in): 6817

Pressure (psi): 2000

Shot Interval (m): 125

Distance to Near Channel (m): 188

Distance to Antenna (m): 56

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 240

Channels Recorded: 240

Group Spacing (m): 25

Cable Length (m): 6000

Cable Depth (m): 10

Near Channel Number: 240

Used Compass Birds: true

Nav System

Trimble Tasman Y-code GPS

WGS84

Acquisition System

Digital

Name: Syntrak 480

Sample Interval (msec): 4

Record Length (sec): 4

Details

edu.utexas.ig:ew0005_acq001 (Lines: )

Source Information

AirGun

Receiver Information

Hydrophone:Streamer

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

Y-Code; Tasmon GPS receiver

WGS84

Acquisition System

Digital

Name: Syntrack 480-24

Details

Receiver Type: Hydrophone_Streamer

Source Type: SeismicSource_Gun_Air

Acquisition System Name: Syntrack 480-24

Acquisition System Type: digital

Seismic Nav System: Y-Code; Tasmon GPS receiver

Survey Datum: WGS84

Source to Near Channel (m): 188

Antenna to Source (m): 56

Number of Channels Recorded: 240

Channel Length (m): 25

Cable Receiver Depth (m): 80

Source Volume (cubicInches): 6817

Source Pressure (bars): 138

Source Number: 20

Source Depth (m): 6.5

Shot Control: distance

Shot Interval (s or m): 50

Compass Birds: no

Tail Buoy Positioning: no

Recording Delay: no

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