Marine Geoscience Data System

Seismic Reflection/Refraction Data at the Academic Seismic Portal

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Expeditions / Compilations

EW0208

Maurice Ewing

Processed

Acquisition Information

Processed Data Sets

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Seismic:WideAngle:OBS

Ocean Bottom Seismometer (OBS) data across Hydrate Ridge, Cascadia convergent margin, northwest Pacific, acquired during the R/V Maurice Ewing survey EW0203 (2002)

Platform Info

Array:Maurice Ewing

LDEO

Device Info

Seismic:OBS

Events

Line Log

Station:Bottom:Deployed Log

Locale

File Format

PDF

Quality

Nakamura, Yosio

UTIG

Data Set References

Seismic:WideAngle:OBS

Data DOI: 10.1594/IEDA/500100

Ocean Bottom Seismometer (OBS) data across Hydrate Ridge, Cascadia convergent margin, northwest Pacific, acquired during the R/V Maurice Ewing survey EW0203 (2002)

Platform Info

Array:Maurice Ewing

LDEO

Device Info

Seismic:OBS

Events

Line Log

Station:Bottom:Deployed Log

Locale

File Format

SEGY

Quality

Nakamura, Yosio

UTIG

Data Set References

Event Logs

Line (EW0208)

Device Info

Related Devices

Bangs, Nathan

UTIG

Line (EW0208)

Device Info

Seismic:MCS

Platform: Maurice Ewing (Array)

Seismic:OBS

Platform: Maurice Ewing (Array)

Bangs, Nathan

UTIG

Station:Bottom (EW0208)

Device Info

Seismic:MCS

LDEO

Platform: Maurice Ewing (Array)

Seismic:OBS

Platform: Maurice Ewing (Array)

Bangs, Nathan

UTIG

Station:Bottom:Deployed (EW0208)

Device Info

Seismic:OBS

Platform: Maurice Ewing (Array)

Bangs, Nathan

UTIG

Seismic Acquisition Parameters

Download As Text

EW0208_ACQ001 (Lines: all)

Source Information

AirGun (SERCEL:GI)

Source Number: 2

Volume (cu in): 210

Pressure (psi): 2000

Depth (m): 2.5

Shot Interval (m): 20

Distance to Near Channel (m): 56

Distance to Antenna (m): 55.3

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 120

Channels Recorded: 120

Group Spacing (m): 12.5

Cable Length (m): 1500

Cable Depth (m): 4

Near Channel Number: 120

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

Tasmon P-Code (primary)

WGS84

Acquisition System

Digital

Name: Syntron Syntrak 480

Sample Interval (msec): 1

Details

Record Length: 6.144 secs for sequence 001

10.240 secs for sequences 002-009 and 012-014

6.656 secs for sequence 010-011 and 015-045

Two Ship Work with JOIDES Resolution was done only for OBS and VSP.

edu.utexas.ig:ew0208_acq001 (Lines: )

Source Information

NotApplicable

Receiver Information

NotApplicable

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

P-code GPS

WGS84

Acquisition System

Digital

Name: Syntrack

Details

Receiver Type: Seismometer_OceanBottom

Source Type: SeismicSource_Gun_Air_GI

Acquisition System Name: Syntrack

Acquisition System Type: digital

Seismic Nav System: P-code GPS

Survey Datum: WGS84

Source to Near Channel (m): 56

Antenna to Source (m): null

Number of Channels Recorded: 120

Channel Length (m): 12.5

Cable Receiver Depth (m): 4

Source Volume (cubicInches): 210

Source Pressure (bars): 138

Source Number: 2

Source Depth (m): 2.5

Shot Control: distance

Shot Interval (s or m): 20

Compass Birds: no

Tail Buoy Positioning: no

Recording Delay: no

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