Seismic Reflection/Refraction Data at the Academic Seismic Portal
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Expeditions / Compilations
Maurice Ewing
Processed
Raw
Acquisition Information
Processed Data Sets
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Backscatter:Acoustic, Bathymetry:SwathData at NOAA:NCEI
Platform Info
Maurice Ewing
LDEO
Device Info
Sonar:
Atlas:Hydrosweep DS
Locale
File Format
MBSystem
Quality
1
Detrick, Robert
WHOI
Raw Data Sets
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Raw ship-based Multibeam Sonar Data acquired during R/V Maurice Ewing expedition EW9416 (1994)
Platform Info
Maurice Ewing
LDEO
Device Info
Sonar:
Atlas:Hydrosweep DS
Locale
File Format
MBSystem
Quality
0
Detrick, Robert
WHOI
Event Logs
Device Info
Related DevicesSeismic:
LDEO
Platform: Maurice Ewing (Array)
Seismic:
Platform: Maurice Ewing (Array)
Mutter, Carolyn
LDEO
Device Info
Seismic:
LDEO
Platform: Maurice Ewing (Array)
Seismic:
LDEO
Platform: Maurice Ewing (Array)
Detrick, Robert
WHOI
Device Info
Seismic:
LDEO
Platform: Maurice Ewing (Array)
Seismic:
Platform: Maurice Ewing (Array)
Detrick, Robert
WHOI
Seismic Acquisition Parameters
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
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