DR FRIDTJOF NANSEN 31/8/86
CECAF COOPERATIVE SURVEY 1986
Record of observations during ship-to-ship
intercalibration
off northern Senegal with integration of bottom back
scattering
1. Instrument settings:
CORNIDE DE SAAVEDRA: EK 400, 38 KHz, attenuation 30 dB, QD gain -30 dB, SL + VR = 129,8 dB.2. First trial. C d S and F N. Abt 15º 20, 17º 00, 90 m depth channel 85-95 m., 30/8, 0130 hrs.N’DIAGO: EK 400,38 KHz, att. 30 dB, QD gain - 49 dB, SL + VR = 130 dB.
DR FRIDTJOF NANSEN: EK 400,38 KHz. att. 30 dB, QD gain - 14.1 dB, SL + VR = 136,6.
LOUIS SAUGER: Biosonics, 120 KHz, transmitter -13 dB. receiver - 18 dB, pulse length 0,6 ms. treshold 120 mv. band width 2 KHz, 0 dB, 0.224, SL + VR = 81.3 dB
Recorded in order from last mile completed:3 Four vessel trial: Abt 15º40, l6°45, 40 m depth, channel 30-50 m. 30/8 1500 hrs.C d S: 1145, 1107, 1520, l337, 1244, 1051, 931, 1064, 1092, 1056, 1073, 1054, 989, 889, 792.
Dr F N: 67, 71, 89, 90, 75, 63, 58, 62, 69, 64,58, 57, 52.
Recorded in order from last mile completed:L.S. (x1/100) 10.027, 10.014, 9.495,9.121, 9.234, 9.213, 8.551, 8.774, 8.793, 8.138, 7.819, 7.971, 8.043.
C d S: 793, 772, 840, 725, 762, 793, 675, 635, 637, 603, 631, 590, 578, 659, 617, 644, 571.
N’DIAGO: 52380, 55040, 60440, 54600, 54720, 49140, 46830, 46210, 42270, 42730, 41750, 42190, 43162, 41786.
Dr F.N: 50.0, 51.5, 60.2, 52.7, 53.6, 47.5, 45.2, 43.3, 40.8, 41.7, 42.2, 42.7, 44.2, 41.6, 41.6.
DR FRIDTJOF NANSEN 3/9/86
CECAF COOPERATIVE SURVEY 1986
Record of observations from DR FRIDTJOF NANSEN
during
ship to ship calibration with LOUIS SAUGER on fish
layers
2nd - 3rd August 1986.
Instruments: EK 400 38 kHz, QD integrator: auxiliary
instruments EK 400 120 kHz, QM integrators, ES 400 38 (split beam sounder) with color printer.
Integration over whole depth column with write-out each nautical mile. Units: 1/10 x m2/nm2.
Total values allocated on fish/plankton in accordance with information from ES 400 120 kHz - QM system with threshold and TS observations from ES 400.
|
1st run |
2nd run |
3rd run |
||||||
|
L S |
Dr F.N. |
L S |
||||||
|
Dr F.N. |
L S |
Dr. F.N. |
||||||
|
log |
fish |
plkt |
log |
fish |
plkt |
log |
fish |
plkt |
|
618 |
25 |
222 |
631 |
25 |
129 |
646 |
31 |
35 |
|
619 |
6 |
241 |
632 |
6 |
143 |
647 |
0 |
57 |
|
620 |
6 |
230 |
633 |
6 |
129 |
648 |
0 |
67 |
|
621 |
6 |
226 |
634 |
13 |
94 |
649 |
63 |
58 |
|
622 |
6 |
222 |
635 |
38 |
50 |
650 |
69 |
21 |
|
623 |
6 |
143 |
636 |
92 |
31 |
651 |
49 |
0 |
|
624 |
31 |
80 |
637 |
101 |
11 |
652 |
97 |
0 |
|
625 |
302 |
69 |
638 |
16 |
18 |
653 |
314 |
0 |
|
626 |
2601 |
34 |
639 |
13 |
28 |
654 |
843 |
0 |
|
627 |
25 |
48 |
640 |
35 |
31 |
655 |
314 |
0 |
|
628 |
6 |
73 |
641 |
28 |
31 |
656 |
238 |
0 |
|
629 |
6 |
106 |
642 |
50 |
34 |
|
|
|
|
|
|
|
643 |
50 |
72 |
|
|
|
|
|
|
|
644 |
19 |
94 |
|
|
|
|
|
|
|
645 |
44 |
68 |
|
|
|
