Seismic:Navigation
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Processed Seismic Navigation Data (version 1) from the Aleutian Islands Margin, Gulf Of Alaska, acquired during the R/V Marcus G. Langseth expedition MGL1110 (2011)
This data set was acquired with the LDEO Multi-Channel Seismic system during R/V Marcus G. Langseth expedition MGL1110 conducted in 2011 (Chief Scientist: Dr. Donna Shillington). These data files are of UKOOA P1/90 format and include Seismic Navigation data that were processed after data collection. Data were acquired as part of the projects: Alaska/Aleutian megathrust and Megathrust seismic hazards by reflection mapping, and funding was provided by NSF grant: OCE09-26614.
Shillington, Donna
Investigator
LDEO
Nedimovic, Mladen
Investigator
Dalhousie
Webb, Spahr
Investigator
LDEO
Device Info
Seismic:
LDEO
Platform
Marcus G. Langseth (Array)
LDEO
Awards
Data DOI
Quality
1
A level of processing has been undertaken, ensuring quality control (e.g. ping edited sonar data, edited navigation data).
Data Files
References
Acquisition Information
Documents
Data Citation Information
Related Data Sets
ISO/XML Metadata
References
Abadi et al., 2017 Estimating the location of baleen whale calls using dual streamers to support mitigation procedures in seismic reflection surveys PLoS ONE 12. doi: 10.1371/journal.pone.0171115
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
Seismic Acquisition Parameters
Download as Text: MGL1110
MGL1110_ACQ001 (Lines: Sequence numbers 8-10)
Source Information
AirGun (BOLT:1500LL)
Source Number: 36
Volume (cu in): 6600
Pressure (psi): 2000
Depth (m): 12
Shot Interval (m): 62.5
Distance to Near Channel (m): 325.84
Distance to Antenna (m): 222.7
Number of Arrays: 1
Receiver Information
Hydrophone:Streamer
Number of Cables: 2
Channels Per Cable: 636
Channels Recorded: 1272
Group Spacing (m): 12.5
Cable Spacing (m): 450
Cable Length (m): 7950
Used Active Tail Buoy: true
Used Compass Birds: true
Nav System
CNAV 3050 - primary
WGS84
Acquisition System
Digital
Name: Syntron Syntrak 960
Sample Interval (msec): 2
Record Length (sec): 22.528
Details
Near channel numbers were 636 and 1272
Streamer 1 was towed at a depth of 9m, Streamer 2 at 12m
MGL1110_ACQ002 (Lines: Sequence numbers 11-26)
Source Information
AirGun (BOLT:1500LL)
Source Number: 36
Volume (cu in): 6600
Pressure (psi): 2000
Depth (m): 12
Shot Interval (m): 62.5
Distance to Antenna (m): 222.7
Number of Arrays: 1
Receiver Information
Hydrophone:Streamer
Number of Cables: 2
Channels Per Cable: 636
Channels Recorded: 1272
Group Spacing (m): 12.5
Cable Spacing (m): 225
Cable Length (m): 7950
Used Active Tail Buoy: true
Used Compass Birds: true
Nav System
CNAV 3050 - primary
WGS84
Acquisition System
Digital
Name: Syntron Syntrak 960
Sample Interval (msec): 2
Details
Streamer 1 was towed at a depth of 9m, Streamer 2 at 12m
Streamer 1 was towed from the stern, distance from center of source to near group was 235.68m
Streamer 2 was towed from the paravane, distance from center of source to near group was 325.84m
Near channel numbers were Streamer 1: 636 and Streamer 2 : 1272
Lines 11-26 were recorded for 22.528s except for part of Line 24 which was recorded only for 18.430s
MGL1110_ACQ003 (Lines: Sequence numbers 27-33)
Source Information
AirGun (BOLT:1500LL)
Source Number: 36
Volume (cu in): 6600
Pressure (psi): 2000
Depth (m): 12
Shot Interval (m): 62.5
Distance to Near Channel (m): 325.84
Distance to Antenna (m): 222.7
Number of Arrays: 1
Receiver Information
Hydrophone:Streamer
Number of Cables: 1
Channels Per Cable: 636
Channels Recorded: 636
Group Spacing (m): 12.5
Cable Length (m): 7950
Cable Depth (m): 12
Near Channel Number: 636
Used Active Tail Buoy: true
Used Compass Birds: true
Nav System
CNAV 3050 - primary
WGS84
Acquisition System
Digital
Name: Syntron Syntrak 960
Sample Interval (msec): 2
Details
Data was recorded by a single streamer, Streamer 2, towed from the paravane
Distance from center of source to near group was 325.84m
Lines 27-33 were recorded for 22.528s except for part of Line 29 which was recorded only for 18.430s
org.marine-geo:MGL1110_ACQ001 (Lines: )
Source Information
AirGun
Receiver Information
Hydrophone:Streamer
Used Active Tail Buoy: false
Used Compass Birds: false
Nav System
WGS84
Acquisition System
Digital
Name:
Details
Receiver Type: Hydrophone_Streamer
Source Type: SeismicSource_Gun_Air
Acquisition System Name: null
Acquisition System Type: null
Seismic Nav System: null
Survey Datum: WGS84
Source to Near Channel (m): 235.68
Antenna to Source (m): 222.7
Number of Channels Recorded: null
Channel Length (m): null
Cable Receiver Depth (m): null
Source Volume (cubicInches): 6600
Source Pressure (bars): null
Source Number: 10
Source Depth (m): null
Shot Control: null
Shot Interval (s or m): null
Compass Birds: no
Tail Buoy Positioning: no
Recording Delay: no
MGL1110 Documents
Cruise Blog
Go to site
HTML
Daily Field
MGL1110_Daily_Field_Report.pdf (340.0kB)
PDF
MCS Lines
MGL1110_B15_MCS_line_log.pdf (62.0kB)
PDF
MCS Observer Watch
MGL1110_MCS_Observer_Watch.pdf (781.0kB)
PDF
Navigation Watch
MGL1110_Navigation_Watch_Log.pdf (211.0kB)
PDF
Cruise (no appendices)
cruise_report_mgl1110.pdf (57.9MB)
PDF
Cruise (with appendices)
mgl1110.cruiserpt.pdf (205.8MB)
PDF
USGS: Processing Steps and Navigation Notes
Data Collection Summary
MGL1110_DataReport_v1.3.pdf (1.3MB)
PDF
MCS Tow Offset Configuration
MGL1110_Towing_Offsets.pdf (231.0kB)
PDF
How To Cite This Data
Related Data Sets
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Seismic:Navigation
Data DOI:
10.1594/IEDA/317817
Seismic Navigation Data (P2 format) from the Aleutian Islands Margin, Gulf Of Alaska, acquired during the R/V Marcus G. Langseth expedition MGL1110 (2011)
Locale
Alaska:Aleutians
FocusSite:GeoPRISMS
File Format
P2
Quality
0
Seismic:Navigation
Data DOI:
10.1594/IEDA/317812
Raw Seismic Navigation Data (P1 format) from the Aleutian Islands Margin, Gulf Of Alaska, acquired during the R/V Marcus G. Langseth expedition MGL1110 (2011)
Locale
Alaska:Aleutians
FocusSite:GeoPRISMS
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.
Seismic:Reflection:MCS
Data DOI:
10.1594/IEDA/317810
Multi-Channel Seismic Shot Data from the Aleutian Islands Margin, Gulf Of Alaska, acquired during the R/V Marcus G. Langseth expedition MGL1110 (2011)
Locale
Alaska:Aleutians
FocusSite:GeoPRISMS
File Format
SEGD
Quality
0
Shillington, Donna
LDEO
Nedimovic, Mladen
Dalhousie
Webb, Spahr
LDEO
Seismic:Reflection:MCS
Data DOI:
10.26022/IEDA/329922
Processed depth-migrated seismic reflection data across the Aleutian arc from Langseth ALEUT cruise MGL1110 (2011)
Locale
Alaska:Aleutians
FocusSite:GeoPRISMS
File Format
SEGY
Quality
2
von Huene, Roland
USGS
Miller, John
USGS
Krabbenhoeft, Anne
GEOMAR
Seismic:Reflection:MCS
Data DOI:
10.26022/IEDA/329923
Processed depth-migrated seismic reflection image profiles across the Aleutian arc from Langseth ALEUT cruise MGL1110 (2011)
Locale
Alaska:Aleutians
FocusSite:GeoPRISMS
File Format
JPEG
Quality
2
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