EW9209 Navigation:Primary

Processed ship-based Navigation Data acquired during the Maurice Ewing expedition EW9209 (1992)

This data set was acquired with a ship-based Navigation system during Maurice Ewing expedition EW9209 conducted in 1992 (Chief Scientist: Dr. William Curry). These data files are of Text File (ASCII) format and include Navigation data and were processed after data collection. Data were acquired as part of the project(s): Cenozoic Deep Water History on Ceara Rise: An Integrated Geophysical and Sedimentological Survey, and funding was provided by NSF grant(s): JOI-15-92, OCE91-16303, and OCE91-16500.

Curry, William

Investigator

WHOI

Device Info

Navigation

Platform

Maurice Ewing

LDEO

Awards

OCE91-16303

Data DOI

10.1594/IEDA/311448

Quality

A level of processing has been undertaken, ensuring quality control (e.g. ping edited sonar data, edited navigation data).

Report Incorrect Information

Data Files

Documents

Data Citation Information

Related Data Sets

ISO/XML Metadata

Seismic Acquisition Parameters

Download as Text: EW9209

EW9209_ACQ001 (Lines: All lines)

Source Information

AirGun

Pressure (psi): 2000

Depth (m): 7

Distance to Near Channel (m): 150

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 8

Cable Length (m): 106

Near Channel Number: 4

Nav System

GPS

WGS84

Acquisition System

Digital

Name: DSS240

Details

Source to Antenna Distance is unknown

Source volume: 1350 cu in for 6 airguns

Source volume: likely 210 cu in for GI gun

Source to Channel Distance: ch 4 is 150m, ch 3 is 169m, ch 2 is 206m, ch 1 is 256m

Sonobuoys were recorded on channels 5-8

Cable Depth was 50-60 feet

Shot Interval was 10 secs lines 1-19, 21-25, 30-31

Shot Interval was 17 secs for line 20

Shot Interval was 15 secs lines 26-28, 32-36

Shot Interval was 7 secs lines 29

Shot Interval was 12 secs lines 37 and 38

Sample Interval was 2000 microseconds for lines 1-19, 21-25, 29-31

Sample Interval was 4000 microseconds for lines 20, 26-28, 32-35, 36-38

Record Length was 7 seconds for lines 1-7

Record Length was 8 seconds lines 8-19, 21-25, 30-31, 36

Record Length was 15 seconds for line 20

Record Length was 12 seconds lines 26-28, 32-35

Record Length was 5 seconds for line 29

Record Length was 10 seconds lines 36-38

Sample Interval was 2000 microseconds for lines 1-19, 21-25, 29-31

Sample Interval was 4000 microseconds for lines 20, 26-28, 32-35, 36-38

edu.utexas.ig:ew9209_acq001 (Lines: )

Source Information

AirGun

Receiver Information

Hydrophone:Streamer

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

GPS

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

Survey Datum: WGS84

Source to Near Channel (m): 150: channel 4; 169: channel 3; 206: channel 2, 256: channel 1

Antenna to Source (m): unknown

Number of Channels Recorded: 8 (Sonobuoys recorded on channels 5-8)

Channel Length (m): null

Cable Receiver Depth (m): 50 to 60

Source Volume (cubicInches): 1350: for 6 airguns; 210: for GI gun ?

Source Pressure (bars): 138

Source Number: 6 (GI gun used for lines 21-25)

Source Depth (m): 6.1

Shot Control: time

Shot Interval (s or m): 10: lines 1-19, 21-25, 30-31;<br>17: line 20;<br>15: lines 26-28, 32-36;<br>7: line 29;<br>12: lines 37,38

Compass Birds: no

Tail Buoy Positioning: no

Recording Delay: no

Expand