Marine Geoscience Data System

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Data DOI: 10.1594/IEDA/324461

Raw Seismic Navigation Data (P2 format) from the Hikurangi subduction margin collected during R/V Marcus G. Langseth expedition MGL1708 (2017)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Events

Line Log

Locale

Hikurangi

SubductionZone

File Format

P2

Quality

0

Bangs, Nathan

UTIG

vanAvendonk, Harm

UTIG

Wallace, Laura

UTIG

Proctor, William

UTIG

Pilarczyk, Jessica

USM

Marshall, Jeffrey

CalPoly:Pomona

Saffer, Demian

Penn State

Okaya, David

USC

Seismic:Navigation

Data DOI: 10.1594/IEDA/324460

Processed Seismic Navigation Data (P1 format) from the Hikurangi subduction margin collected during R/V Marcus G. Langseth expedition MGL1708 (2017)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Events

Line Log

Locale

Hikurangi

SubductionZone

File Format

P1

Quality

1

Details

These processed (quality=1) P190 navigation files should be used for processing the MCS data.

Bangs, Nathan

UTIG

vanAvendonk, Harm

UTIG

Wallace, Laura

UTIG

Proctor, William

UTIG

Pilarczyk, Jessica

USM

Marshall, Jeffrey

CalPoly:Pomona

Saffer, Demian

Penn State

Okaya, David

USC

Seismic:Navigation

Data DOI: 10.1594/IEDA/324459

Raw Seismic Navigation Data (P1 format) from the Hikurangi subduction margin collected during R/V Marcus G. Langseth expedition MGL1708 (2017)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Events

Line Log

Locale

Hikurangi

SubductionZone

File Format

P1

Quality

0

Details

These are raw, unprocessed P190 navigation files. Processed P190 navigation files exist (quality=1) and should be used for processing MCS data instead of these files.

Bangs, Nathan

UTIG

vanAvendonk, Harm

UTIG

Wallace, Laura

UTIG

Proctor, William

UTIG

Pilarczyk, Jessica

USM

Marshall, Jeffrey

CalPoly:Pomona

Saffer, Demian

Penn State

Okaya, David

USC

Seismic:Reflection:MCS

Data DOI: 10.1594/IEDA/324462

Multi-Channel Seismic Shot Data from the Hikurangi subduction margin collected during Langseth cruise MGL1708 (2017)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Events

Line Log

Locale

Hikurangi

SubductionZone

File Format

SEGD

Quality

0

Bangs, Nathan

UTIG

vanAvendonk, Harm

UTIG

Wallace, Laura

UTIG

Proctor, William

UTIG

Pilarczyk, Jessica

USM

Marshall, Jeffrey

CalPoly:Pomona

Saffer, Demian

Penn State

Okaya, David

USC

Data Set References

Event Logs

Line (MGL1708)

Device Info

Seismic:MCS

LDEO

Platform: Marcus G. Langseth (Array)

Bangs, Nathan

UTIG

Seismic Acquisition Parameters

Download As Text

MGL1708_ACQ001 (Lines: Sequences 1-3 and 10, OBS-only.)

Source Information

AirGun (BOLT:1500LL)

Source Number: 1

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 9

Distance to Antenna (m): 235

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 recorded channels.

Shot spacing is 150m for Sequence 001-003

Shot spacing is 200m for Sequence 010.

MGL1708_ACQ002 (Lines: Sequences 4-9, 11-53.)

Source Information

AirGun (BOLT:1500LL)

Source Number: 1

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 9

Shot Interval (m): 50

Distance to Near Channel (m): 188

Distance to Antenna (m): 235

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

Cable Depth (m): 10

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 and OBS

Sample Interval (msec): 2

Record Length (sec): 18

Details

Source was Bolt 1500LL and 1900LL.

Shot spacing was 75m for sequence 007.

Shot spacing was 150m for sequence 009.

Record length was 14 seconds for sequences 035 and 044.

For sequences 031-032, 036-037, 039 and 041-043 the shot spacing was 37.5m and the record length was 14 seconds.

For sequences 033-034, 040 and 045 the shot spacing was 37.5m, the record length was 14 seconds, and the cable depth was 8m.