US Geological Survey
Open-File Report 02-368
US Geological Survey
Open-File Report 02-368
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SEG-Y EBCDIC Header for 1998 Cruise |
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| C 1 | U. S. GEOLOGICAL SURVEY COASTAL AND MARINE GEOLOGY TEAM |
| C 2 | SURVEY_ID: M1-98-GM YEAR: 1998 |
| C 3 | AREA: NORTHERN GULF OF MEXICO VESSEL: R/V TOMMY MUNRO |
| C 4 | |
| C 5 | ACQUISITION: 35/35 CUBIC INCH GI GUN ; 14 SEC (20-30) METER SHOT INTERVAL |
| C 6 | 24 CHANNEL 240-METER SOLID CORE HYDROPHONE STREAMER |
| C 7 | 0.25 MS RECORDING SAMPLE INTERVAL, 2.0 SEC RECORD LENGTH |
| C 8 | |
| C 9 | NOTE: FAR 7 CHANNELS WERE EDITED OUT DUE TO STREAMER PROBLEM |
| C10 | |
| C11 | PROCESSING: RESAMPLE TO 0.5 MS, DECONVOLUTION, SPIKE EDIT |
| C12 | VELOCITY ANALYSIS, |
| C13 | DEEP-WATER DELAY STATIC CORRECTION, |
| C14 | 4-FOLD STACK, DATA GAPS FILLED WITH BLANK TRACES. |
| C15 | |
| C16 | OUTPUT: 32-BIT IBM FLOATING POINT SEG-Y |
| C17 | DATA LENGTH 2.0 SEC |
| C18 | RECORD LENGTH 3.0 TO 3.5 SEC TO INCLUDE DEEP-WATER DELAY |
| C19 | |
| C20 | |
| C21 | HEADERS: FFID NUMBER STORED IN BYTES 9-12 |
| C22 | CDP STORED AS 4-BYTE INTEGER IN BYTES 21-24 |
| C23 | NO LOCATION DATA IN TRACE HEADERS |
| C24 | SEQUENTIAL SHOT NUMBER STORED IN BYTES 181-185 |
| C25 | SHOT JULIAN DAY/HOUR/MINUTE IN BYTES 185-189 |
| C26 | |
| C27 | |
| C28 | |
| C29 | |
| C30 | |
| C31 | |
| C32 | |
| C33 | |
| C34 | |
| C35 | |
| C36 | FOR FURTHER INFORMATION CONCERNING THIS DATASET, CONTACT: |
| C37 | ALAN COOPER (650) 329-5157 ACOOPER@USGS.GOV |
| C38 | PATRICK HART (650) 329-5160 HART@USGS.GOV |
| C39 | U. S. GEOLOGICAL SURVEY, M/S 999 |
| C40 | 345 MIDDLEFIELD RD., MENLO PARK, CALIFORNIA 94025 |