October 5, 2011 RC2204 Cruise/project information ------------------------------------------------------------------------------------- Cruise Name RC2204 NGDC number 01010196 Platform Conrad Ship Operator LDEO Chief Scientist Charles Windisch Co-Chief Scientist Roger Larson Principal Investigator ? All collaborating LDEO Institutions Beginning date 03/18/79 Ending date 03/29/79 MCS start date 03/19/79 MCS end date 03/27/79 Cruise Report yes - paper Start Port Manzanillo, Mexico End Port Acapulco, Mexico Project Name East Pacific Orozco F.Z. Project Description ROSE MCS Funding organization ? Award # ? Abstract NO ------------------------------------------------------------------------------------- navigation type: US Navy Transit Satellite cdp navigation files in RC2204.cdpnav.tar: RC2204.line.start_end.cdpnav: RC2204.223.cdpnav 12.826402 -102.046631 28 1979 03 21 03 18 10 000 223 rc2204 11.206123 -101.817182 3440 1979 03 21 21 09 40 000 223 rc2204 RC2204.224.cdpnav 11.182034 -102.009767 28 1979 03 21 23 49 51 000 224 rc2204 11.144417 -102.653092 1495 1979 03 22 07 21 31 000 224 rc2204 RC2204.225.cdpnav 11.144952 -102.645412 128 1979 03 22 08 53 34 000 225 rc2204 13.024355 -102.816397 4876 1979 03 23 09 15 25 000 225 rc2204 RC2204.226.cdpnav 13.007320 -102.773181 28 1979 03 23 11 30 39 000 226 rc2204 13.252352 -103.745666 2488 1979 03 24 00 21 56 000 226 rc2204 RC2204.227.cdpnav 13.221158 -103.783073 28 1979 03 24 01 04 57 000 227 rc2204 11.266517 -103.567999 4510 1979 03 25 01 19 37 000 227 rc2204 RC2204.228.cdpnav 11.236041 -103.604996 28 1979 03 25 01 55 48 000 228 rc2204 11.271406 -104.106054 840 1979 03 25 06 19 19 000 228 rc2204 RC2204.229.cdpnav 11.313230 -104.151517 28 1979 03 25 07 00 40 000 229 rc2204 12.592875 -104.313846 2476 1979 03 25 20 15 11 000 229 rc2204 RC2204.230.cdpnav 12.635902 -104.309428 28 1979 03 25 20 42 23 000 230 rc2204 12.699595 -104.004234 609 1979 03 25 23 50 57 000 230 rc2204 RC2204.231.cdpnav 12.661875 -103.974566 28 1979 03 26 00 36 38 000 231 rc2204 12.030802 -103.887175 1607 1979 03 26 09 09 08 000 231 rc2204 RC2204.232.cdpnav 11.993771 -104.242771 28 1979 03 26 15 00 31 000 232 rc2204 12.321327 -101.760882 5454 1979 03 27 20 21 32 000 232 rc2204 Please note: All times are GMT. Nav files are in UTIG distribution format. Position_Correlation_Method: Position is at center of cmp bin and time is the time the ships's antenna was over that position. Trace_Position: trace Source_CMP_offsets_Applied: yes field data: cdp gathers on tape at LDEO - not yet in database. processed data files: 223 RC2204.223.stk.0027_3440 224 RC2204.224.stk.0024_1495 225 RC2204.225.stk.0125_4876 226 RC2204.226.stk.0025_2488 227 RC2204.227.stk.0024_4510 228 RC2204.228.stk.0024_0840 228 RC2204.228.stk.0056_0808.prestkmig 229 RC2204.229.stk.0232_1127.prestkmig.v1 229 RC2204.229.stk.0024_1065.v1.nov29 229 RC2204.229.stk.0024_2476.v1.sep26 230 RC2204.230.stk.0024_0609 231 RC2204.231.stk.0024_1607 232 RC2204.232.stk.1532_2427 232 RC2204.232.stk.1743_1979.wiener 232 RC2204.232.stk.0024_5454 232 RC2204.232.stk.0024_5454.burg.bp The delays and number of samples may vary within a line. Header info from the first and last traces in each file is in: RC2204.processed.segy.files.index. Fields are as follows: LINE CDP SHOT SOURCE DATE TIME REC_DELAY SAMPLES SAMP_INT POINT ------------------------------------------------------------------------------------- processing system LDEO MCS Inhouse processing: In the filenames: 'stk' means nmo. 'wiener' means Wiener filter. 'burg' means burg decon. 'bp' means bandpass 'v0' refers to the initial velocity function 'v1' refers to a second velocity function. 'prestkmig' would have been and inhouse migration. cdp spacing 50 meters ------------------------------------------------------------------------------------- ********************************************************** RC2204 Seismic Acquisition Parameters ********************************************************** Number of Channels 24 Group Spacing 100 meters Source to Near Channel 300 meters (Not precise but typical for the Conrad at this time) Antenna to Source 40 meters " " " " Near Channel Number 24 Cable Depth ? meters Acquisition System Name DFSIV I have no source information for this cruise. The numbers below are from RC2113, RC2114 and RC2308, the 2 previous cruises and the one following. The source is likely to have been the same. Source Volume 1864 Source Pressure 1850/2000 psi Source Type Bolt 1500C Source Number 4 x 466 cu in0 Source Depth 10 meter Shot Control Time (every 20 seconds or so for approximately 50 meters) Acquisition Sample Interval 4000 microseconds Record Length 12 seconds Compass No Active Tail Buoy No Recording Delay Yes Acquisition System Analog 2 or more ships No **********************************************************