------------------------------------------------------------------------------- EBCDIC ASCII Header ------------------------------------------------------------------------------- C 1 U. S. GEOLOGICAL SURVEY COASTAL AND MARINE GEOLOGY TEAM C 2 SURVEY_ID: S6-09-SC YEAR: 2009 C 3 AREA: POINT BUCHON VESSEL: R/V PARKE SNAVELY C 4 HIGH-RESOLUTION MINISPARKER REFLECTION DATA C 5 SYSTEM: SIG MINISPARKER SYSTEM /(500 JOULES) C 6 BENTHOS 15 FOOT ACTIVE SINGLE-CHANNEL STREAMER C 7 TRITON SBL DIGITAL RECORDING SYSTEM C 8 DIFFERENTIAL GPS NAVIGATION /(NO LAYBACK APPLIED) C 9 C10 C11 REC LENGTH 450 MS, SHOT RATE 500 MS C12 C13 ACQUISITION SPEED 4.5 TO 5.5 KTS. C14 C15 C16 C17 C18 C19 C20 C21 C22 DATA OUTPUT: C23 32-BIT FLOATING POINT SEG-Y OUTPUT FILE, 10.0 KHZ SAMPLING C24 C25 SEG-Y TRACE HEADER LOCATIONS: C26 FFID 9-12 INTEGER SEQUENTIAL PING OR SHOT NUMBER C27 LONGITUDE 73-76 INTEGER MILLISECONDS OF ARC C28 LATITUDE 77-80 INTEGER MILLISECONDS OF ARC C29 DAY 159-160 INTEGER JULIAN DAY C30 HOUR 161-162 INTEGER HOUR /(24-HOUR CLOCK) C31 MINUTE 163-164 INTEGER MINUTE C32 SECOND 165-166 INTEGER SECOND C33 C34 C35 C36 FOR FURTHER INFORMATION CONCERNING THIS DATASET, CONTACT: C37 PATRICK HART /(650) 329-5160 HART@USGS.GOV C38 RAY SLITER /(650) 329-5194 RSLITER@USGS.GOV C39 U. S. GEOLOGICAL SURVEY, M/S 999 C40 345 MIDDLEFIELD RD., MENLO PARK, CALIFORNIA 94025