Marine Geoscience Data System

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Data DOI: 10.1594/IEDA/321188

Seismic Shot Point Navigation Data from offshore Cape Hatteras to the Mid-Atlantic Ridge acquired during R/V Gulf Seal expedition GS1974 (1974)

Platform Info

Array:Gulf Seal

Device Info

Seismic:MCS

Events

Line Log

Locale

AtlanticOcean:North

Ocean

File Format

ASCII

Quality

1

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.

Grow, John

USGS

Markl, Rudi G.

LDEO

Seismic:Reflection:MCS

Data DOI: 10.1594/IEDA/321184

Multi-Channel Seismic Shot Data from the western North Atlantic Ocean (IPOD Line) acquired during R/V Gulf Seal expedition GS1974 (1974)

Platform Info

Array:Gulf Seal

Device Info

Seismic:MCS

Events

Line Log

Locale

AtlanticOcean:North

Ocean

File Format

SEGY

Quality

0

Details

There are overlaps between files.

Grow, John

USGS

Markl, Rudi G.

LDEO

Event Logs

Line (GS1974)

Grow, John

USGS

Seismic Acquisition Parameters

Download As Text

GS1974_ACQ001 (Lines: A single seismic line called The IPOD LINE)

Source Information

AirGun (BOLT)

Source Number: 23

Volume (cu in): 1700

Pressure (psi): 1800

Depth (m): 9

Shot Interval (m): 50

Distance to Near Channel (m): 346

Distance to Antenna (m): 55

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 48

Channels Recorded: 48

Cable Length (m): 3400

Cable Depth (m): 18

Near Channel Number: 48

Nav System

Loran C, Doppler sonar and satellite systems

NAD27

Acquisition System

Digital

Name: DFS III

Sample Interval (msec): 4

Details

Airguns were Bolt Pneumatic Acoustical Repeaters (PAR)

Record Length was 10-12 seconds

The original field recording had no Delay, but a Delay is used in the archived segy files

Group Spacing for channels 48 through 25 is 50 meters

Group Spacing for channel 25 to 24 is 75 meters

Group Spacing for channels 24 through 1 is 100 meters