Marine Geoscience Data System

Seismic Reflection/Refraction Data at the Academic Seismic Portal

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Expeditions / Compilations

EW9102

Maurice Ewing

Raw

Acquisition Information

Raw Data Sets

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Seismic:Navigation:ShotTime

Data DOI: 10.1594/IEDA/308531

Seismic Shot Point Navigation Data from the East Pacific Rise Spreading Center acquired during R/V Maurice Ewing expedition EW9102 (1991)

Platform Info

Array:Maurice Ewing

LDEO

Device Info

Seismic:MCS

LDEO

Events

Line Log

Station:Surface Log

Locale

EPR

SpreadingCenter

File Format

ASCII:TSN

Quality

Details

This dataset, Seismic Shot Point Navigation data, provides the primary seismic navigation source for this cruise and should be used for seismic data processing.

Detrick, Robert

URI

Mutter, John

LDEO

Data Set References

Seismic:Reflection:MCS

Data DOI: 10.1594/IEDA/308534

Raw Multi-Channel Seismic Shot Data from the East Pacific Rise Spreading Center acquired during R/V Maurice Ewing expedition EW9102 (1991)

Platform Info

Array:Maurice Ewing

LDEO

Device Info

Seismic:MCS

LDEO

Events

Line Log

Locale

EPR

SpreadingCenter

File Format

SEGY

Quality

Detrick, Robert

URI

Mutter, John

LDEO

Data Set References

Seismic:WideAngle

Data DOI: 10.1594/IEDA/321939

Raw Wide-Angle Shot Data (Sonobuoy) from the East Pacific Rise Spreading Center acquired during the Maurice Ewing expedition EW9102 (1991)

Platform Info

Array:Maurice Ewing

LDEO

Device Info

Seismic:Sonobuoy

Events

Line Log

Station:Surface Log

Locale

EPR

SpreadingCenter

File Format

SEGY

Quality

Detrick, Robert

URI

Mutter, John

LDEO

Event Logs

Line (EW9102)

Device Info

Seismic:MCS

Platform: Maurice Ewing (Array)

Mutter, John

LDEO

Line (EW9102)

Device Info

Related Devices

Detrick, Robert

URI

Station:Surface (EW9102)

Device Info

Seismic:MCS

LDEO

Platform: Maurice Ewing (Array)

Seismic:Sonobuoy

Platform: Maurice Ewing (Array)

Detrick, Robert

URI

Seismic Acquisition Parameters

Download As Text

EW9102_ACQ001 (Lines: 1081-1090, 1111, 1114, 1126, 1137)

Source Information

AirGun (BOLT:1500C)

Source Number: 10

Volume (cu in): 4193

Pressure (psi): 2000

Shot Interval (sec): 10

Distance to Near Channel (m): 358

Distance to Antenna (m): 95

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 160

Channels Recorded: 160

Group Spacing (m): 25

Near Channel Number: 160

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

Acquisition System

Digital

Name: DSS240

Sample Interval (msec): 4

Record Length (sec): 8.8

Details

See the additional descriptive acquisition information in the Report:Technical:Seismic:AcquisitionParameters file

This was a two ship cruise. See additional information for the cruise TERA01WT at http://www.marine-geo.org/tools/search/entry.php?id=TERA01WT

EW9102_ACQ002 (Lines: 1091, 1106-1110, 1112-1113, 1115-1125, 1136, 1139-1144)

Source Information

AirGun (BOLT:1500C)

Source Number: 20

Volume (cu in): 8385

Pressure (psi): 2000

Shot Interval (sec): 20

Distance to Near Channel (m): 358

Distance to Antenna (m): 95

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 160

Channels Recorded: 160

Group Spacing (m): 25

Near Channel Number: 160

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

Acquisition System

Digital

Name: DSS240

Sample Interval (msec): 4

Record Length (sec): 18.75

Details

See the additional descriptive acquisition information in the Report:Technical:Seismic:AcquisitionParameters file

This was a two ship cruise. See additional information for the cruise TERA01WT at http://www.marine-geo.org/tools/search/entry.php?id=TERA01WT

EW9102_ACQ003 (Lines: 1149,1151)

Source Information

AirGun (BOLT:1500C)

Source Number: 10

Volume (cu in): 4193

Pressure (psi): 2000

Shot Interval (sec): 10

Distance to Near Channel (m): 358

Distance to Antenna (m): 95

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 160

Channels Recorded: 160

Group Spacing (m): 25

Near Channel Number: 160

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

Acquisition System

Digital

Name: DSS240

Sample Interval (msec): 4

Record Length (sec): 8.7

Details

See the additional descriptive acquisition information in the Seismic:Ancillary file

This was a two ship cruise. See additional information for the cruise TERA01WT at http://www.marine-geo.org/tools/search/entry.php?id=TERA01WT

EW9102_ACQ004 (Lines: 1092-1105, 1127-1135)

Source Information

AirGun (BOLT:1500C)

Source Number: 20

Volume (cu in): 8385

Pressure (psi): 2000

Shot Interval (sec): 60

Distance to Near Channel (m): 358

Distance to Antenna (m): 95

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 160

Channels Recorded: 160

Group Spacing (m): 25

Near Channel Number: 160

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

Acquisition System

Digital

Name: DSS240

Sample Interval (msec): 4

Record Length (sec): 18.75

Details

See the additional descriptive acquisition information in the Report:Technical:Seismic:AcquisitionParameters file

This was a two ship cruise. See additional information for the cruise TERA01WT at http://www.marine-geo.org/tools/search/entry.php?id=TERA01WT

EW9102_ACQ005 (Lines: 1138)

Source Information

AirGun (BOLT:1500C)

Source Number: 6

Volume (cu in): 2620

Pressure (psi): 2000

Shot Interval (sec): 40

Distance to Near Channel (m): 358

Distance to Antenna (m): 95

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 160

Channels Recorded: 160

Group Spacing (m): 25

Near Channel Number: 160

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

Acquisition System

Digital

Name: DSS240

Sample Interval (msec): 4

Record Length (sec): 18.75

Details

See the additional descriptive acquisition information in the Report:Technical:Seismic:AcquisitionParameters file

This was a two ship cruise. See additional information for the cruise TERA01WT at http://www.marine-geo.org/tools/search/entry.php?id=TERA01WT

EW9102_ACQ006 (Lines: 1145-1148,1150,1152)

Source Information

AirGun (BOLT:1500C)

Source Number: 20

Volume (cu in): 8385

Pressure (psi): 2000

Shot Interval (sec): 20

Distance to Near Channel (m): 358

Distance to Antenna (m): 95

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 160

Channels Recorded: 160

Group Spacing (m): 25

Near Channel Number: 160

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

Acquisition System

Digital

Name: DSS240

Sample Interval (msec): 4

Record Length (sec): 18

Details

See the additional descriptive acquisition information in the Report:Technical:Seismic:AcquisitionParameters file

This was a two ship cruise. See additional information for the cruise TERA01WT at http://www.marine-geo.org/tools/search/entry.php?id=TERA01WT

edu.utexas.ig:ew9102_acq001 (Lines: )

Source Information

AirGun

Receiver Information

Hydrophone:Streamer

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

GPS, transit satellite

WGS84

Acquisition System

Digital

Name: DSS 240

Details

Receiver Type: Hydrophone_Streamer

Source Type: SeismicSource_Gun_Air

Acquisition System Name: DSS 240

Acquisition System Type: digital

Seismic Nav System: GPS, transit satellite

Survey Datum: WGS84

Source to Near Channel (m): 358

Antenna to Source (m): 95

Number of Channels Recorded: 160

Channel Length (m): 25

Cable Receiver Depth (m): unknown meters

Source Volume (cubicInches): 2620: line(s) 1138.<br>4193: line(s) 1081-1090; 1111;1114.1126;1137; 1149; 1152; 1149;1152.<br>8385s: line(s) 1091; 1106-1110; 1112-1113; 1115-1125; 1136;1139-1144; 1092-1105; 1145-1148;1150;1152.

Source Pressure (bars): 138

Source Number: 6: line(s) 1138.<br>10: line(s) 1081-1090; 1111;1114.1126;1137; 1149; 1152.<br>20: line(s) 1091; 1106-1110; 1112-1113; 1115-1125; 1136;1139-1144; 1092-1105; 1145-1148;1150;1152

Source Depth (m): unknown meters

Shot Control: time

Shot Interval (s or m): 10: line(s) 1081-1090; 1111;1114.1126;1137; 1149; 1152; 20: line(s) 1091; 1106-1110; 1112-1113; 1115-1125; 1136; 1139-1144; 1145-1148; 1150;1152; 40: line(s) 1138; >60: line(s) 1092-1105.

Compass Birds: no

Tail Buoy Positioning: no

Recording Delay: no

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