Marine Geoscience Data System

Processed Data Sets

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Data DOI: 10.26022/IEDA/316853

Processed ship-based Multibeam Sonar Data acquired in the western North Atlantic Ocean during the Maurice Ewing expedition EW0007 (2000)

Platform Info

Maurice Ewing

LDEO

Device Info

Sonar:Multibeam

Atlas:Hydrosweep DS

Locale

File Format

MBSystem

Quality

2

GMRT,

Raw Data Sets

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Backscatter:Acoustic, Bathymetry:Swath

Data DOI: 10.1594/IEDA/305655

Raw ship-based Multibeam Sonar Data acquired during R/V Maurice Ewing expedition EW0007 (2000)

Platform Info

Maurice Ewing

LDEO

Device Info

Sonar:Multibeam

Atlas:Hydrosweep DS

Locale

File Format

MBSystem

Quality

0

Tucholke, Brian

WHOI

Holbrook, W. Steven

University of Wyoming

Backscatter:Acoustic, Bathymetry:Swath

Data at NOAA:NCEI

Platform Info

Maurice Ewing

LDEO

Device Info

Sonar:Multibeam

Atlas:Hydrosweep DS

Locale

File Format

MBSystem

Quality

0

Tucholke, Brian

WHOI

Event Logs

Line (EW0007)

Device Info

Related Devices

Tucholke, Brian

WHOI

Line (EW0007)

Device Info

Seismic:MCS

Platform: Maurice Ewing (Array)

Holbrook, W. Steven

University of Wyoming

Seismic Acquisition Parameters

Download As Text

EW0007_ACQ001 (Lines: All lines, sequences 1-49)

Source Information

AirGun (BOLT:1500C)

Source Number: 20

Volume (cu in): 8540

Pressure (psi): 2000

Depth (m): 7.5

Distance to Near Channel (m): 181.65

Distance to Antenna (m): 55.6

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

Trimble Tasman P-code GPS

WGS84

Acquisition System

Digital

Name: Syntrak 480

Sample Interval (msec): 4

Record Length (sec): 16

Details

Cable Depth was routinely 7.5m, but lowered to 10m in rough seas

Shot Interval was 50m for Seq 02(shots 2455-8430), Seq 04(9091-10310), Seq 09(11325-14718), Seq 10-15, 17-28, Seq 29(36564-36612), Seq 32-34, Seq 35(39880-39938), Seq 37-39, 41-49

Shot Interval was 62.5m for Seq 02(shots 8431-8564), Seq 04(10311-10316), Seq 05-08, Seq 09(11193-11324), Seq 29(36613-37078), Seq 30,31, Seq 35(39939-40366), Seq 36

Shot Interval was 75m for Seq 02 (shots 8565-8852), Seq 03, Seq 04(10317-10478)

Shot Interval was 200m for Seq 01,16,40

edu.utexas.ig:ew0007_acq001 (Lines: )

Source Information

AirGun

Receiver Information

Hydrophone:Streamer

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

Tasman P-code navigation satellite

WGS84

Acquisition System

Digital

Name: Syntrack 480

Details

Receiver Type: Hydrophone_Streamer

Source Type: SeismicSource_Gun_Air

Acquisition System Name: Syntrack 480

Acquisition System Type: digital

Seismic Nav System: Tasman P-code navigation satellite

Survey Datum: WGS84

Source to Near Channel (m): 181.65

Antenna to Source (m): 55.6

Number of Channels Recorded: 480

Channel Length (m): 12.5

Cable Receiver Depth (m): 7.5: normally; 10: in rough seas

Source Volume (cubicInches): 8540

Source Pressure (bars): null

Source Number: 20

Source Depth (m): 7.5

Shot Control: null

Shot Interval (s or m): null

Compass Birds: no

Tail Buoy Positioning: no

Recording Delay: no