MGL1801 - Marine Geoscience Data System

MGL1801

Field:Marine

Cruise DOI: 10.7284/907876

Map View

Locale

Hikurangi Subduction Zone

NZ3D-FWI: Hikurangi margin 3-D active-source seismic survey and Full-Waveform Inversion project

Bangs, Nathan

Chief Scientist

UTIG

Silver, Eli

Principal Investigator
(not in field)

UCSC

Tobin, Harold

Principal Investigator

University of Wisconsin

Moore, Gregory

Principal Investigator
(not in field)

UH:SOEST

Han, Shuoshuo

Co-Principal Investigator

UTIG

Awards

Platform

Marcus G. Langseth

LDEO

Start Date

2018-01-06

Napier, New Zealand

Stop Date

2018-02-09

Napier, New Zealand

Report Incorrect Information

Data Sets

Acquisition Information

References

Personnel

Instruments

Documents

Related Information

Sensor Data

Sort by:

Navigation:Primary

Device Info

Navigation

Marcus G. Langseth

Repository

R2R

Format

R2R:Nav

Bangs, Nathan

UTIG

Seismic Reflection/Refraction

Device Info

Seismic:MCS

Array:Marcus G. Langseth

Repository

MGDS

Format

P1, P2, SEGD, SEGY

Bangs, Nathan

UTIG

Han, Shuoshuo

UTIG

Tobin, Harold

Bell, Rebecca

Imperial College London

Barker, Daniel

GNS

Moore, Gregory

UH:HIGP

Aria, Ryuta

JAMSTEC

Silver, Eli

UCSC

Kodaira, Shuichi

JAMSTEC

Henrys, Stuart

GNS

Edwards, Joel

Zanskar Geothermal

Basset, Daniel

GNS

Seismic:Velocity:Model

Device Info

Seismic:MCS

Array:Marcus G. Langseth

Repository

MGDS

Format

SEGY

Bangs, Nathan

UTIG

Han, Shuoshuo

UTIG

Bell, Rebecca

Imperial College London

Barker, Daniel

GNS

Aria, Ryuta

JAMSTEC

Kodaira, Shuichi

JAMSTEC

Edwards, Joel

Zanskar Geothermal

Tobin, Harold

Moore, Gregory

UH:HIGP

Henrys, Stuart

GNS

Basset, Daniel

GNS

Event Logs

Device Info

Seismic:MCS

LDEO

Platform: Marcus G. Langseth (Array)

Bangs, Nathan

UTIG

Seismic Acquisition Parameters

Download As Text

MGL1801_ACQ001 (Lines: Sequences 1-62.)

Source Information

AirGun (BOLT:1500LL)

Source Number: 18

Volume (cu in): 3300

Pressure (psi): 2000

Depth (m): 7

Shot Interval (m): 25

Number of Arrays: 2

Source Array Separation (m): 75

Receiver Information

Hydrophone:Streamer

Number of Cables: 4

Channels Per Cable: 468

Channels Recorded: 1872

Group Spacing (m): 12.5

Cable Spacing (m): 150

Cable Length (m): 6000

Cable Depth (m): 8

Near Channel Number: 1

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav 3050 primary

WGS84

Acquisition System

Digital

Name: Sercel Seal 408

Sample Interval (msec): 2

Record Length (sec): 9.5

Details

Source was Bolt 1500LL and 1900LL.

For sequence 001, the navigation reference point (NRP) to center of source (COS) distance was 265m and the COS to center of near group (CNG) distance was 200m.

For sequences 002-004, the NRP-COS distance was 290m and COS-CNG distance was 175m.

For sequences 005-009, the NRP-COS distance was 290m and COS-CNG distance was 172m.

For sequences 010-011, the NRP-COS distance was 285m and COS-CNG distance was 170m.

For sequences 012-061, the NRP-COS distance was 280m and COS-CNG distance was 175m.

For sequence 062, there were streamer issues and no good data was recorded.

References

Arai et al., 2020 Three-dimensional P-wave velocity structure of the northern Hikurangi margin from the NZ3D experiment: Evidence for fault-bound anisotropy JGR Solid Earth . doi: 10.1029/2020JB020433

Bangs et al., 2023 Slow slip along the Hikurangi margin linked to fluid-rich sediments trailing subducting seamounts Nat. Geosci. 16. doi: 10.1038/s41561-023-01186-3

Davy et al., 2021 Generating High-Fidelity Reflection Images Directly From Full-Waveform Inversion: Hikurangi Subduction Zone Case Study Geophysical Research Letters 48. doi: 10.1029/2021GL094981

Gase et al., 2023 Subducting volcaniclastic-rich upper crust supplies fluids for shallow megathrust and slow slip Sci. Adv. 9. doi: 10.1126/sciadv.adh0150

Han et al., 2021 The many double BSRs across the northern Hikurangi margin and their implications for subduction processes Earth and Planetary Science Letters 558. doi: 10.1016/j.epsl.2021.116743

Scientific Personnel

Arai, Ryuta

Scientist

JAMSTEC

Aria, Ryuta

Investigator
(not in field)

JAMSTEC

Ball, Stephen

Student:Graduate

UCSC

Bangs, Nathan

Scientist:Chief