Seismic:Ancillary
Diebold, John
Investigator
LDEO
Quality
0
Data have not been processed or modified since acquisition (e.g. Realtime navigation or sonar data, raw images etc.).
Data Files
Acquisition Information
Documents
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ISO/XML Metadata
Download Data Set Metadata Report
XML
MGDS formatted data set xml report containing verbose file and data set level metadata
Related Acquisition Information
Seismic Acquisition Parameters
Download as Text: EW9409
EW9409_ACQ001 (Lines: All lines)
Source Information
AirGun (BOLT:1500C)
Source Number: 20
Volume (cu in): 8400
Pressure (psi): 2000
Depth (m): 7.5
Shot Interval (sec): 20
Distance to Near Channel (m): 225
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): 8
Near Channel Number: 160
Used Active Tail Buoy: false
Used Compass Birds: false
Nav System
Acquisition System
Digital
Name: DMS2000
Sample Interval (msec): 2
Record Length (sec): 16
Details
Antenna to Source was 95m for Lines 1232-1237,1243
Antenna to Source was 80m for Lines 1238-1242,1244-1249
NOTE: The offsets listed here were used for the processed files. It is suspected that the correct numbers are 255 and 95. The second group of lines was processed at a later date by Peter Buhl. He must have determined the near offset to be 255 meters and adjusted the antenna to source distance so that the position of the cdps would remain the same. Peter Buhl did not remember, but Joyce interpreted these results.
NOTE 2: The estimated Record Length was actually 16-17 seconds.
edu.utexas.ig:ew9409_acq001 (Lines: )
Source Information
AirGun
Receiver Information
Hydrophone:Streamer
Used Active Tail Buoy: false
Used Compass Birds: false
Nav System
GPS
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: GPS
Survey Datum: WGS84
Source to Near Channel (m): 225: Lines 1232-1237, 1243; 255: Lines 1238-1242, 1244-1249
Antenna to Source (m): 95: Lines 1232-1237,;1243; 80: Lines 1238-1242,1244-1249
Number of Channels Recorded: 160
Channel Length (m): 25
Cable Receiver Depth (m): 7.5
Source Volume (cubicInches): 8400
Source Pressure (bars): 138
Source Number: 20
Source Depth (m): 7.5
Shot Control: time
Shot Interval (s or m): 20: seconds interval for ~ 50 meters
Compass Birds: no
Tail Buoy Positioning: no
Recording Delay: no
EW9409 Documents
Data Collection Summary
EW9409_Data_Report.pdf (945.0kB)
PDF
IRIS
Go to site
PDF
Sonobuoy Information
EW9409_sonobuoy_README.txt (4.0kB)
ASCII
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Seismic Shot Point Navigation Data from the Aleutian Islands and Bering Sea Shelf acquired during R/V Maurice Ewing expedition EW9409 (1994)
Platform Info
Array:Maurice Ewing
LDEO
Device Info
Seismic: MCS
LDEO
Events
Locale
File Format
ASCII:TSN
Quality
1
Details
This dataset, Seismic Shot Point Navigation data, provides the primary seismic navigation source for this cruise and should be used for seismic data processing.
McGeary, Susan
UDel
Diebold, John
LDEO
Klemperer, Simon
Stanford University

Data DOI:
10.1594/IEDA/303748
Raw Multi-Channel Seismic Shot Data from the Aleutian Islands and Bering Sea Shelf acquired during R/V Maurice Ewing expedition EW9409 (1994)
Locale
File Format
SEGY
Quality
0
McGeary, Susan
UDel
Diebold, John
LDEO
Klemperer, Simon
Stanford University
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