MGL1601 Seismic Reflection/Refraction

Seismic:Reflection:MCS

Seismic navigation files for reprocessed MCS prestack time-migrated data, South Atlantic CREST transect survey (MGL1601)

This data set presents navigation files for reprocessed multi-channel seismic (MCS) reflection profiles from the 2016 CREST seismic survey. The files are in ASCII text format with 3 columns: CDP number, CDP latitude, CDP longitude. Funding for the CREST project was provided by NSF awards OCE 15-37108 and OCE 15-37169.

Christeson, Gail

Investigator

UTIG

Device Info

Seismic:MCS

LDEO

Platform

Marcus G. Langseth (Array)

LDEO

Awards

OCE15-37108

OCE15-37169

Quality

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

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Data Files

References

Documents

Related Data Sets

ISO/XML Metadata

References

Estep et al., 2019 Seismic Layer 2A: Evolution and Thickness From 0- to 70-Ma Crust in the Slow-Intermediate Spreading South Atlantic JGR Solid Earth . doi: 10.1029/2019JB017302

Christeson et al., 2025 Contrasting evolution of upper crustal velocities in young oceanic crust: Insights from the Southern Mid-Atlantic Ridge Tectonophysics 914. doi: 10.1016/j.tecto.2025.230905

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

Seismic Acquisition Parameters

Download as Text: MGL1601

MGL1601_ACQ001 (Lines: Lines Sequence 1-7, all OBS lines)

Source Information

AirGun (BOLT:1500LL)

Source Number: 1

Volume (cu in): 6600

Pressure (psi): 6600

Depth (m): 9

Shot Interval (m): 150

Distance to Antenna (m): 205

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Nav System

C-Nav 3050

WGS84

Acquisition System

Digital

Details

Shots recorded only by WHOI Ocean Bottom Seismometers

Source models were Bolt 1500LL and 1900LL

MGL1601_ACQ002 (Lines: Lines Sequence 7-30 (all MCS lines))

Source Information

AirGun (BOLT:1500LL)

Source Number: 36

Volume (cu in): 6600

Pressure (psi): 2000

Depth (m): 9

Shot Interval (m): 37.5

Distance to Near Channel (m): 217.7

Distance to Antenna (m): 205

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer (SERCEL:Sentinel Solid Streamer)

Number of Cables: 1

Channels Per Cable: 1008

Channels Recorded: 1008

Group Spacing (m): 12.5

Cable Length (m): 12600

Cable Depth (m): 9

Near Channel Number: 1

Used Active Tail Buoy: true

Used Compass Birds: true

Nav System

C-Nav 3050 primary, a global satellite-based differential receiver

WGS84

Acquisition System

Digital

Name: SERCEL SEAL 408

Sample Interval (msec): 2

Details

Record Length for Seq 7-28 was 15s

Record Length for Seq 29 was 14s

Record Length for Seq 30 was 12s

Source models were Bolt 1500LL and 1900LL

Data Set Documents

Science Report

Cruise

mgl1601.cruiserpt.pdf (25.3MB)

PDF

MGL1601 Documents

Log

Daily Logs

MGL1601_DailyLogs.pdf (18.7MB)

PDF

Log

MCS Lines

MGL1601_B15_line_log_multi_channel_seismics.pdf (210.0kB)

PDF

Log

Navigation Logs

MGL1601_NavLogs.pdf (869.0kB)

PDF

Log

Observer Logs

MGL1601_ObsLog.pdf (1.0MB)

PDF

More Information

Cruise Blog

Go to site

HTML

More Information

MCS Offsets

MGL1601_Offsets_MCS.pdf (2.5MB)

PDF

More Information

Seismic configuration by sequence acquired with offsets

MGL1601_SEAL408_line_configuration_by_sequence.pdf (179.0kB)

PDF

More Information

Sercel SEAL manual, SEG-D format

seauser2.pdf (1.3MB)

PDF

Science Report

Cruise

mgl1601.cruiserpt.pdf (25.3MB)

PDF

Technical Report

Data Collection Summary

MGL1601_DataReport_Ver1.0.pdf (6.6MB)

PDF

Related Data Sets

Sort by:

Seismic:Reflection:MCS

Reprocessed MCS prestack time-migrated data (SEG-Y format), South Atlantic CREST transect survey (MGL1601)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Locale

AtlanticOcean:South

Ocean

File Format

SEGY

Quality

Christeson, Gail

UTIG

Data Set References

Estep et al., 2019

Christeson et al., 2025

Seismic:Reflection:MCS

Reprocessed MCS prestack time-migrated profiles (PNG images), South Atlantic CREST transect survey (MGL1601)

Platform Info

Array:Marcus G. Langseth

LDEO

Device Info

Seismic:MCS

LDEO

Locale

AtlanticOcean:South

Ocean

File Format

PNG

Quality

Christeson, Gail

UTIG

Data Set References

Estep et al., 2019

Christeson et al., 2025

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