EW0210 Navigation:Primary

Processed ship-based Navigation Data from the Gulf of California acquired during the Maurice Ewing expedition EW0210 (2002)

This data set was acquired with a ship-based Navigation system during Maurice Ewing expedition EW0210 conducted in 2002 (Chief Scientist: Dr. Dan Lizarralde). 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): Seismic and Geologic Study of Gulf of California Rifting and Magmatism, Sea of Cortez Continental Extension and Rifting, and The PESCADOR Seismic Experiment, and funding was provided by NSF grant(s): OCE01-11738, OCE01-11983, OCE01-12058, OCE01-12149, and OCE01-12152.

Lizarralde, Dan

Investigator

Georgia Institute of Technology

Device Info

Navigation

Platform

Maurice Ewing

LDEO

Awards

OCE01-11983

Data DOI

10.1594/IEDA/311344

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: EW0210

EW0210_ACQ001 (Lines: All lines (sequences) 1-39)

Source Information

AirGun (BOLT:1500C)

Source Number: 20

Pressure (psi): 2000

Distance to Antenna (m): 55.3

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

p-code GPS used early in cruise, then WAAS GPS

WGS84

Acquisition System

Digital

Name: SYNTRAK 480

Sample Interval (msec): 4

Record Length (sec): 16.384

Details

Source Volume for Sequences 1-13 was 8490cu.in.

Source Volume for Sequences 14-39 was 7610cu.in.(from diagram)

Source Depth is unknown

Source to Near Channel was 179.25 meters for Sequences 1-25, 25-39

Source to Near Channel for Line 26 was -20m when no tow/stretch section was available

Shot Interval was 50m for Sequences 01,04-10,13,14.001-14.002(shots 17661-22203),16,27,28,29,30,38,39

Shot Interval was 100m for Sequences 19,20,21,24,25.26,31,32,33

Shot Interval was 150m for Sequences 02,03,11,12,14.003(shots 23725-24985),15,17,18,34,35,36,37

Shot Interval was likely 37.5m for Sequences 22,23

edu.utexas.ig:ew0210_acq001 (Lines: )

Source Information

AirGun

Receiver Information

Hydrophone:Streamer

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

WGS84

Acquisition System

Digital

Name:

Details

Receiver Type: Hydrophone_Streamer

Source Type: SeismicSource_Gun_Air

Acquisition System Name: null

Acquisition System Type: digital

Seismic Nav System: null

Survey Datum: WGS84

Source to Near Channel (m): null

Antenna to Source (m): null

Number of Channels Recorded: 480

Channel Length (m): 12.5

Cable Receiver Depth (m): null

Source Volume (cubicInches): 7860

Source Pressure (bars): null

Source Number: 20

Source Depth (m): null

Shot Control: distance

Shot Interval (s or m): 50: Northwest of Alarcón Rise; 60-fold data with 6.25 m CMP spacing; 150: South of Alarcón Rise; CMP spacing doubled to 12.5 m; yielding 40 fold data (Sutherland; 2006).

Compass Birds: no

Tail Buoy Positioning: no

Recording Delay: no

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