Marine Geoscience Data System

Processed Data Sets

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Navigation:Primary

Shapefile of Processed ship-based Navigation Data acquired during the Maurice Ewing expedition EW9302 (1993)

Platform Info

Maurice Ewing

LDEO

Device Info

Navigation

Locale

File Format

SHP

Quality

1

Oppo, Delia

WHOI

Navigation:Primary

Data DOI: 10.1594/IEDA/311456

Processed ship-based Navigation Data acquired during the Maurice Ewing expedition EW9302 (1993)

Platform Info

Maurice Ewing

LDEO

Device Info

Navigation

Locale

File Format

MGDS:Nav

Quality

1

Oppo, Delia

WHOI

Event Logs

Line (EW9302)

Device Info

Related Devices

Manley, Patricia

Middlebury College

Line (EW9302)

Device Info

Seismic:SCS

Platform: Maurice Ewing (Array)

Manley, Patricia

Middlebury College

Seismic Acquisition Parameters

Download As Text

EW9302_ACQ001 (Lines: All Lines 1-8)

Source Information

AirGun (BOLT:1500C)

Source Number: 6

Volume (cu in): 1350

Pressure (psi): 2000

Distance to Near Channel (m): 150

Distance to Antenna (m): 95

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 4

Near Channel Number: 1

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

GPS

WGS84

Acquisition System

Digital

Name: DSS240

Sample Interval (msec): 2

Record Length (sec): 10

Details

Number of Channels: All field data files have 8 traces. It seems likely that the SCS traces are 1-4 and sonobuoys were recorded on one or more of traces 5-8

Distance from Antenna to Source = 95m

Distance from Antenna to Channel 1 = 150m

Distance from Antenna to Channel 2 = 165m

Distance from Antenna to Channel 3 = 190m

Distance from Antenna to Channel 4 = 240m

Cruise Report: Towing speed and streamer tow cable length were both adjusted to make source and receiver depths roughly equal in an attempt to improve the overall resolution and signal to noise ratio of the system.