RC2411 Cruise/project information ------------------------------------------------------------------------------------- Cruise Name RC2411 NGDC number 01010272 Platform Conrad Ship Operator LDEO Platform Prospekta Ship Operator BGR Chief Scientist Conrad: John C.Mutter Principal Investigator John C. Mutter. LDEO Peter Buhl, LDEO All collaborating UTIG, BGR Institutions Beginning date 08/16/83 Ending date 09/07/83 MCS start date 08/20/83 MCS end date 09/06/83 Cruise Report No (We do have various lab logs and recording logs) Start Port Bergen, Norway End Port Sandnessjoen, Norway Project Name Geophysical Investigation of the Conjugate Passive Margins of the Norwegian-Greenland Sea Project Description 2-ship Marine Survey Funding organization NSF Award # 82160614 Abstract ------------------------------------------------------------------------------------- RC2411.cdpnav.tar: cdp navigation files RC2411.line.start_end.cdpnav: 1st and last entry in each cdp navigation file. NOTE: Conrad navigation used for all lines. 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 NOTE: A distance along the line was calculated from the navigation (Conrad) for each shot. Mini Ranger and Raydist readings were recorded digitally to determine the ship to ship range between the Conrad and the Prospekta. In most case Raydist readings were used for the final range. This final range, the ships' geometries and the distance calculated from the nav were used to determine the offset for each trace recorded on the 2 ships and its cdp bin. The expectation was that the cdps for each of the offsets would match for a given line. C_C = Conrad shooting and Conrad recording P_P = Prospekta shooting and Prospekta recording C_P = Conrad shooting and Prospekta recording P_C = Prospekta shooting and Conrad recording Prospekta was the lead ship during COPs for all lines. ------------------------------------------------------------------------------------- field data: cdp gathers on 9-track tape at LDEO Below is a list of processed SEG-Y files: 08 RC2411.08.C_C.v5.85_09_21.stk.0089_4216 08 RC2411.08.C_C.v5.89_12_08.nf.vf.stk.0089_4205 08 RC2411.08.C_P.v5.85_09_03.stk.0150_4280 08 RC2411.08.C_P.v5.89_09_12.nf.vf.stk.0155_2400 08 RC2411.08.P_C.v4.85_09_03.stk.0153_4276 08 RC2411.08.P_P.v4.85_05_28.stk.0211_4339 08 RC2411.08.P_P.v5.89_09_06.nf.vf.stk.2751_4325 09 RC2411.09.C_C.v3.84_07_31.stk.1163_2639 09 RC2411.09.C_C.v4.89_12_09.nf.vf.stk.1163_2628 09 RC2411.09.C_P.v3.84_08_09.stk.1222_2659 09 RC2411.09.C_P.v4.89_10_31.nf.vf.stk.1225_2644 09 RC2411.09.P_C.v3.84_08_09.stk.1225_2712 09 RC2411.09.P_P.v3.84_08_01.stk.1257_2764 09 RC2411.09.C_C+P_C.v3.84_08_09.1163_2639 09 RC2411.09.C_C+C_P+P_C.v3.84_08_09.1163_2639 09 RC2411.09.P_P+C_P.v3.85_02_07.stk.1222_2764 09 RC2411.09.P_P+C_P+P_C.v3.85_03_22.1222_2764 09 RC2411.09.P_P+C_P+P_C.v3.85_04_24.stk.1222-2764 09 RC2411.09.P_P+C_P+P_C.wt4.v3.85_04_22.stk.1222.2764 09 RC2411.09.P_P+C_P+P_C.wt6.v3.85_04_22.stk.1222_2712 12 RC2411.12.C_C.v3.85_04_25.stk.2967_6724 12 RC2411.12.C_P.v3.85_04_29.stk.3051_6813 12 RC2411.12.C_P.v3.89_10_21.nf.vf.stk.3055_3654 12 RC2411.12.C_P.v3.89_10_21.nf.vf.stk.5302_6769 12 RC2411.12.P_C.v3.85_05_06.stk.3048_6786 12 RC2411.12.P_P.v3.85_04_29.stk.3086_6814 12 RC2411.12.P_P.v3.89_10_17.nf.vf.stk.3085_5100 12 RC2411.12.P_P+C_P+P_C.v3.85_05_01.stk.3048_6814 12 RC2411.12.P_P+C_P+P_C.wt4.v3.85_05_01.stk.3048_6814 12 RC2411.12.P_P+C_P+P_C.wt6.v3.85_05_01.stk.3048_6814 15 RC2411.15A.C_C.v3.85_07_11.stk.1066_2342 15 RC2411.15A.C_P.v3.85_09_21.stk.1129_1954 15 RC2411.15A.P_C.v3.85_09_21.stk.1128_1952 15 RC2411.15A.P_P.v3.85_10_09.stk.1196_2015 15 RC2411.15A.P_P.v3.89_10_30.nf.vf.stk.1200_1999 15 RC2411.15B.C_C.v3.85_07_16.stk.1487_3197 15 RC2411.15B.C_C.v3.89_12_13.nf.vf.stk.1487_3196 15 RC2411.15B.C_P.v3.85_09_21.stk.1586_3299 15 RC2411.15B.P_C.v3.85_09_21.stk.1488_3245 15 RC2411.15B.P_P.v3.85_07_11.stk.1617_3334 15 RC2411.15C.C_C.v3.85_07_17.stk.3113_3583 15 RC2411.15C.C_C.v3.89_12_15.nf.vf.stk.3113_3582 15 RC2411.15C.C_P.v3.85_09_22.stk.3193_3694 15 RC2411.15C.P_C.v3.85_09_22.stk.3176_3644 15 RC2411.15C.P_P.v3.85_07_11.stk.3223_3731 15 RC2411.15C.P_P.v3.89_10_07.nf.vf.stk.3225_3716 18 RC2411.18.C_C.v5.85_10_05.stk.0549_1735 18 RC2411.18.C_C.v5.89_12_14.nf.vf.stk.0549_1723 18 RC2411.18.C_P.v5.85_10_03.stk.0588_1801 18 RC2411.18.C_P.v6.88_06_12.vf.stk.0593_1772 18 RC2411.18.P_C.v5.85_10_05.stk.0605_1799 18 RC2411.18.P_P.v5.85_10_03.stk.0641_1862 18 RC2411.18.P_P.v5.89_11_10.endmute.stk.0641_1831 18 RC2411.18.P_P.v6.88_05_19.vf.stk.0670_1833 21 RC2411.21.C_C.v5.85_10_05.stk.0958_2760 21 RC2411.21.C_C.v5.89_12_13.nf.vf.stk.0958_2749 21 RC2411.21.C_P.v5.85_10_05.stk.1015_2823 21 RC2411.21.C_P.v5.88_06_11.vf.stk.1022_2797 21 RC2411.21.C_P.v5.88_06_19.nf.vf.stk.1019_2796 21 RC2411.21.P_C.v5.85_10_06.stk.1026_2821 21 RC2411.21.P_C.v5.88_06_21.nf.vf.stk.1029_2798 21 RC2411.21.P_P.v5.85_10_05.stk.1078_2886 21 RC2411.21.P_P.v5.88_06_19.nf.vf.stk.1082_2856 21 RC2411.21.P_P.v5.89_11_10.vf.endmute.stk.1078_2822 21 RC2411.21.P_P+C_P.v5.85_10_07.stk.1015_2886 30 RC2411.30.C_C.v3.85_05_03.stk.0957_4905 30 RC2411.30.C_C.v4.89_12_13.nf.vf.stk.0957_4894 30 RC2411.30.C_P.v3.85_05_21.stk.1044_4990 30 RC2411.30.C_P.v3.86_08_06.nf.pd.mute.stk.1015_2240 30 RC2411.30.C_P.v3.87_01_22.mute.stk.1244_4600 30 RC2411.30.P_C.v3.85_05_07.stk.1141_4939 30 RC2411.30.P_C.v4.88_06_18.nf.vf.stk.3995_4934 30 RC2411.30.P_P.v3.85_05_25.stk.1086_5025 30 RC2411.30.P_P.v3.87_01_21.mute.stk.1200_4601 30 RC2411.30.P_P.v4.88_06_16.nf.vf.strmute.stk.1091_4995 30 RC2411.30.P_P.v4.89_07_30.nf.vf.endmute.strmute.stk.1086_5010 30 RC2411.30.P_P+C_P+P_C.v3.85_05_21.stk.1044_5025 ------------------------------------------------------------------------------------- RC2411.seismic.segy.processed.files.index Fields are as follows: LINE CDP CDP SOURCE POINT DATE TIME REC_DELAY SAMPLES SAMP_INT trace # ------------------------------------------------------------------------------------- processing system LDEO MCS Inhouse processing Normal moveout and stack, some band pass, some mute, some velocity filter.. For the far offsets a weight or shade sometimes applied to equalize magnitudes. cdp spacing 50 meters ------------------------------------------------------------------------------------- *************************************************************************************** *************************************************************************************** *************************************************************************************** RC2411 Seismic Acquisition Parameters: Field_activity_ID RC2411 Acquisition_parameter_ID ACQ001 Seq/line numbers COP Lines 08,09,12,15,18,21,30 ESP Lines 01,03,05,07,10,11,13,14,16,17,19,20,22,23,25,27,29 Missing line numbers may have been CDP (Prospekta). Conrad: Receiver_type Hydrophone:Streamer Source_type Airgun Acquisition_system_name DFS IV Acquisition_system_type Digital Seismic_nav_system Northstar-6000 LORAN-C & Magnovox 1107 Satellite/Doppler Sonar probably Survey_datum WGS72 Antenna_to_source 48 m Source_to_near_channel 298 m Number_of_channels_recorded 48 Number_of_cables 1 Number_of_channels_each_cable N/A Channel_length 50 m Cable_spacing N/A Near_channel_number 48 Cable_length 2400 m Cable_depth ? Receiver_make_model ? Source_volume 2932 cu. in. Source_pressure 2000 psi Source_make_model Bolt 800C Source_number 4 Source_depth ? Prospekta : Receiver_type Hydrophone:Streamer Source_type Airgun Acquisition_system_name DFS V Acquisition_system_type Digital Seismic_nav_system Northstar-6000 LORAN-C & Magnovox 1107 Satellite/Doppler Sonar probably Survey_datum WGS72 Antenna_to_source 88 m Source_to_near_channel 150 m Number_of_channels_recorded 60 Channel_length 50 m Near_channel_number 60 Cable_length 3000 m Cable_depth ? Receiver_make_model ? Source_volume 2227 cu in Source_pressure 2000 psi Source_make_model Source_number ? Source_depth ? Shot_control Time Shot_interval 60 secs each ship, alternating every 30 secs COP Prospekta shot on 1st half min (flag 2), Conrad on 2nd half min (flag 1) 60 secs ESP Record_length 20 secs COP, 40 secs ESP Sample Interval 4000 microseconds (processed data sample interval is 8000 microseconds) Compass_birds yes tail_buoy_positioning Recording_delay Not sure but several processed files do. 2 or more ships Yes (COP and ESP lines) Prospekta was the lead ship during COPs for all lines. Conrad nav used to determine cdps. ***************************************************************************************