MGL1803 Data - Marine Geoscience Data System

Marine Geoscience Data System

MGL1803 Seismic Reflection/Refraction

Seismic:Reflection:MCS

GeoPRISMS:Funded

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Pre-stack depth-migrated seismic reflection images from the 2018 SISIE seismic survey (MGL1803)

This data set presents image files of pre-stack depth-migrated Multi-Channel Seismic (MCS) reflection data from the SISIE marine seismic experiment. These versions of the data are uninterpreted and are displayed with automatic gain control. For interpreted images, see Shuck et al. (2021), Tectonics. Note that MCS17B and MCS17C were merged into a single reflection image after processing. These image files are in JPG format and were generated as part of the project called SISIE: South Island Subduction Initiation Experiment. Funding was provided through NSF grants OCE16-54689 and OCE16-54766.

Shuck, Brandon

Investigator

LDEO

Gulick, Sean

Investigator

UTIG

vanAvendonk, Harm

Investigator

UTIG

Saustrup, Steffen

Investigator

UTIG

Hess, Thomas

Investigator

JSG

Gurnis, Michael

Investigator

CalTech

Device Info

Seismic:MCS

LDEO

Platform

Marcus G. Langseth (Array)

LDEO

Awards

Data DOI

10.26022/IEDA/330848

Quality

2

The data have been processed/modified to a level beyond that of basic quality control (e.g. final processed sonar data, photo-mosaics).

Report Incorrect Information

Data Files

References

Acquisition Information

Documents

Data Citation Information

Related Data Sets

ISO/XML Metadata

Related Acquisition Information

Seismic Acquisition Parameters

Download as Text: MGL1803

MGL1803_ACQ001 (Lines: Sequences 001 and 002, OBS only.)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 9

Shot Interval (m): 150

Distance to Antenna (m): 220

Number of Arrays: 1

Receiver Information

Seismic:OBS

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

C-Nav 3050 primary

WGS84

Acquisition System

Digital

Name: OBS

Details

Source was Bolt 1500LL and 1900LL. This set of acquisition parameters was used for airgun shooting to OBS instruments. No streamer was used so there are no cables or channels.

MGL1803_ACQ002 (Lines: Sequences 003-009.)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 9

Shot Interval (m): 50

Distance to Near Channel (m): 202

Distance to Antenna (m): 220

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 1008

Channels Recorded: 1008

Group Spacing (m): 12.5

Cable Length (m): 12600

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): 16

Details

Source was Bolt 1500LL and 1900LL.

For sequence 003 the streamer (cable) depth changed from 10m to 12m during the line due to weather.

Sequences 004, 005 used 12m streamer depth.

During sequence 006, streamer depth changed from 12m to 18m due to weather.

Sequences 007, 008 used 18m streamer depth.

During sequence 009, streamer depth raised from 18m to 14m due to weather.

MGL1803_ACQ003 (Lines: Sequences 010-014.)

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 9

Shot Interval (m): 50

Distance to Near Channel (m): 185

Distance to Antenna (m): 220

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 324

Channels Recorded: 324

Group Spacing (m): 12.5

Cable Length (m): 4050

Cable Depth (m): 14

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): 14

Details

Source was Bolt 1500LL and 1900LL.

During sequence 012 the streamer (cable) depth changed from 14m to 18m and back to 14m due to weather.

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