Marine Geoscience Data System

Seismic Reflection/Refraction Data at the Academic Seismic Portal

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Expeditions / Compilations

EW0007

Maurice Ewing

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Acquisition Information

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Seismic:Reflection:MCS

Data DOI: 10.1594/IEDA/321426

Raw Multi-Channel Seismic Shot Data from the Newfoundland Margin acquired during the R/V Maurice Ewing expedition EW0007 (2000)

Platform Info

Array:Maurice Ewing

LDEO

Device Info

Seismic:MCS

Events

Line Log

Locale

EasternNorthAmericanMargin

FocusSite:GeoPRISMS

File Format

SEGY

Quality

Holbrook, W. Steven

University of Wyoming

Tucholke, Brian

WHOI

Data Set References

Event Logs

Line (EW0007)

Device Info

Related Devices

Tucholke, Brian

WHOI

Line (EW0007)

Device Info

Seismic:MCS

Platform: Maurice Ewing (Array)

Holbrook, W. Steven

University of Wyoming

Seismic Acquisition Parameters

Download As Text

EW0007_ACQ001 (Lines: All lines, sequences 1-49)

Source Information

AirGun (BOLT:1500C)

Source Number: 20

Volume (cu in): 8540

Pressure (psi): 2000

Depth (m): 7.5

Distance to Near Channel (m): 181.65

Distance to Antenna (m): 55.6

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 480

Channels Recorded: 480

Group Spacing (m): 12.5

Cable Length (m): 6000

Near Channel Number: 480

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

Trimble Tasman P-code GPS

WGS84

Acquisition System

Digital

Name: Syntrak 480

Sample Interval (msec): 4

Record Length (sec): 16

Details

Cable Depth was routinely 7.5m, but lowered to 10m in rough seas

Shot Interval was 50m for Seq 02(shots 2455-8430), Seq 04(9091-10310), Seq 09(11325-14718), Seq 10-15, 17-28, Seq 29(36564-36612), Seq 32-34, Seq 35(39880-39938), Seq 37-39, 41-49

Shot Interval was 62.5m for Seq 02(shots 8431-8564), Seq 04(10311-10316), Seq 05-08, Seq 09(11193-11324), Seq 29(36613-37078), Seq 30,31, Seq 35(39939-40366), Seq 36

Shot Interval was 75m for Seq 02 (shots 8565-8852), Seq 03, Seq 04(10317-10478)

Shot Interval was 200m for Seq 01,16,40

edu.utexas.ig:ew0007_acq001 (Lines: )

Source Information

AirGun

Receiver Information

Hydrophone:Streamer

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

Tasman P-code navigation satellite

WGS84

Acquisition System

Digital

Name: Syntrack 480

Details

Receiver Type: Hydrophone_Streamer

Source Type: SeismicSource_Gun_Air

Acquisition System Name: Syntrack 480

Acquisition System Type: digital

Seismic Nav System: Tasman P-code navigation satellite

Survey Datum: WGS84

Source to Near Channel (m): 181.65

Antenna to Source (m): 55.6

Number of Channels Recorded: 480

Channel Length (m): 12.5

Cable Receiver Depth (m): 7.5: normally; 10: in rough seas

Source Volume (cubicInches): 8540

Source Pressure (bars): null

Source Number: 20

Source Depth (m): 7.5

Shot Control: null

Shot Interval (s or m): null

Compass Birds: no

Tail Buoy Positioning: no

Recording Delay: no

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