Seismic:Reflection:MCS
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Reprocessed multichannel seismic data across ODP Site 504B in the eastern Pacific Ocean, acquired in 1994 during the R/V Marcus Ewing survey EW9416
These data were reprocessed as time and depth migrations in order to compare the seismic data at ODP Site 504B to the seismic data at the IODP Expedition 352 sites. Funded by the U.S. Science Support Program.
Christeson, Gail
Investigator
Device Info
Seismic:
Platform
Maurice Ewing (Array)
LDEO
Awards
Data DOI
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).
Data Files
References
Acquisition Information
Documents
Data Citation Information
Related Data Sets
ISO/XML Metadata
References
Swift et al., 1998 Oceanic basement structure, sediment thickness, and heat flow near Hole 504B J. Geophys. Res. 103(B7). doi: 10.1029/98JB00698
Kent et al., 1997 Evidence from Hole 504B for the origin of dipping events in oceanic crustal reflection profiles as out-of-plane scattering from basement topography Geology 25(2). doi: 10.1130/0091-7613(1997)025<0131:EFHFTO>2.3.CO;2
Hoover and Trehu, 2017 Uplift, Emergence, and Subsidence of the Gorda Escarpment Basement Ridge Offshore Cape Mendocino, CA Geochem Geophys Geosyst . doi: 10.1002/2017GC007128
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: EW9416
EW9416_ACQ001 (Lines: All Costa Rica Rift lines 1267-1285)
Source Information
AirGun (BOLT:1500C)
Source Number: 10
Volume (cu in): 3005
Pressure (psi): 2000
Depth (m): 7
Shot Interval (sec): 13
Distance to Near Channel (m): 187
Distance to Antenna (m): 88
Number of Arrays: 1
Receiver Information
Hydrophone:Streamer
Number of Cables: 1
Channels Per Cable: 160
Channels Recorded: 160
Group Spacing (m): 25
Cable Length (m): 4000
Cable Depth (m): 10
Near Channel Number: 160
Used Active Tail Buoy: false
Used Compass Birds: true
Nav System
GPS, transit satellite fix, Furuno
WGS84
Acquisition System
Digital
Name: DMS2000
Sample Interval (msec): 2
Record Length (sec): 10
Details
The line numbers 1267-1285 were assigned at LDEO after the cruise.
The list below shows the correspondence between those numbers and the
'CRR' line numbers used at sea
LDEO AT SEA -- SHOTS
1267 (CRR01 B) 2-1026
1268 (CRR02 C) 110-1041
1269 (CRR03 A) 102-1393
1270 (CRR04 E) 102-805
1271 (CRR04 E) 812-1271
1272 (CRR04 E) 1272-1661
1273 (CRR04 E) 1662-2289
1274 (CRR04 E) 2290-3850
1275 (CRR09 B) 104-649
1276 (CRR09 B) 650-1805
1277 (CRR09 B) 1806-2316
1278 (CRR12 ) 101-2266
1279 (CRR12 ) 2267-2846
1280 (CRR12 B) 101-1261
1281 (CRR12 B) 1262-1764
1282 (CRR13 ) 101-4216
1283 (CRR14 ) 101-722
1284 (CRR14 ) 723-1800
1285 (CRR14 ) 1801-2565
EW9416_ACQ002 (Lines: Hole 504B Survey: lines 1-2)
Source Information
AirGun (BOLT:1500C)
Source Number: 10
Volume (cu in): 3005
Shot Interval (sec): 15
Distance to Near Channel (m): 187
Distance to Antenna (m): 88
Number of Arrays: 1
Receiver Information
Hydrophone:Streamer
Number of Cables: 1
Channels Per Cable: 160
Channels Recorded: 160
Group Spacing (m): 25
Cable Length (m): 4000
Cable Depth (m): 9
Near Channel Number: 160
Used Active Tail Buoy: false
Used Compass Birds: true
Nav System
GPS, transit satellite fix, Furuno
WGS84
Acquisition System
Digital
Name: DMS2000
Sample Interval (msec): 2
Record Length (sec): 10
Details
Source depth: 7-10 meters
EW9416_ACQ003 (Lines: Hole 504B Survey: SCS lines 3-16)
Source Information
AirGun (BOLT:1500C)
Number of Arrays: 1
Receiver Information
Hydrophone:Streamer
Number of Cables: 1
Cable Length (m): 137
Used Active Tail Buoy: false
Nav System
GPS, transit satellite fix, Furuno
WGS84
Acquisition System
Digital
Name: DMS2000
Sample Interval (msec): 2
Record Length (sec): 6
Details
Single Channel Streamer Details from Cruise Report:"The SCS streamer is configured with a 188 m leader, a 25 m stretch section, and four active sections totaling 137 m (12.5 m, 25 m, 50 m and 50 m). The data are recorded on DMS2000 data tapes on channels 4 (raw data) and channel 5 (attenuated by a factor of 20 across the entire frequency band of 0-160 Hz) (note: a total of 8 channels are recorded on the data tape, channels 1-3 and 6-8 are dummy channels)." NOTE: We assume the 4 streamer sections were summed before being recorded. There are actually 12 traces for each single channel line on tape
Source volume: 3005 cu. in. lines 3-4,6-9,10A-16, 8420 cu. in. lines 5,10
Source Number: 10 guns lines 3-4,6-9,10A-16, 20 guns used for lines 5,10
Source Depth: 5-6 meters
Shot Interval: 13 sec for lines 3-4,6-9,11-13,16
65 sec interval for line 5 shots 102-497
65 sec interval for line 10 shots 101-453
65 sec interval for lines 10A,14,15
43 sec interval for line 5 shots 498-1062
84 sec interval for line 10 shots 454-812
edu.utexas.ig:ew9416_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: DMS 2000
Details
Receiver Type: Hydrophone_Streamer
Source Type: SeismicSource_Gun_Air
Acquisition System Name: DMS 2000
Acquisition System Type: digital
Seismic Nav System: null
Survey Datum: WGS84
Source to Near Channel (m): 187
Antenna to Source (m): 88
Number of Channels Recorded: 160
Channel Length (m): 25
Cable Receiver Depth (m): 10
Source Volume (cubicInches): 3005
Source Pressure (bars): 138
Source Number: 10
Source Depth (m): 7
Shot Control: time
Shot Interval (s or m): 13
Compass Birds: no
Tail Buoy Positioning: no
Recording Delay: no
Data Set Documents
Cruise
ew9416.cruiserpt.pdf (3.0MB)
PDF
EW9416 Documents
Bathythermograph plots and Cruise data summary
EW9416_Appendix18-19_BTandData_List.pdf (179.0kB)
PDF
CRR seismics
EW9416_Appendix16_CRR_seismics.pdf (1.9MB)
PDF
Crew list and MCS info
EW9416_Appendix1-3_Crew_and_MCS_info.pdf (1.1MB)
PDF
Cruise
EW9416_science_rpt.pdf (3.0MB)
PDF
Hole504B seismics
EW9416_Appendix15_Hole504B_seismics.pdf (1.7MB)
PDF
OBS info
EW9416_Appendix4-14_OBS_info.pdf (2.3MB)
PDF
Sonobuoy log
EW9416_Appendix17_sonobuoy_log.pdf (220.0kB)
PDF
Sonobuoy Information
EW9416.CRR.sb.README (2.0kB)
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Reprocessed multichannel seismic data across ODP Site 504B in the eastern Pacific Ocean, acquired in 1994 during the R/V Marcus Ewing survey EW9416
Locale
File Format
ASCII
Quality
2
Christeson, Gail
Reprocessed multichannel seismic data across ODP Site 504B in the eastern Pacific Ocean, acquired in 1994 during the R/V Marcus Ewing survey EW9416
Locale
File Format
PDF
Quality
2
Christeson, Gail
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