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

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

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

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

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

Download Data Set Metadata Report

XML

MGDS formatted data set xml report containing verbose file and data set level metadata

ISO XML

ISO 19115-compliant xml report containing general data set level metadata

Related Acquisition Information

MGL1801

Line Log

Seismic Acquisition Parameters

Download as Text: MGL1801

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.

Data Set Documents

Science Report

Cruise report. Produced by UTIG.

MGL1801_Cruise_Report.5-22-18_2_UTIG.pdf (8.1MB)

PDF

MGL1801 Documents

Log