| Lindem Data Acquisition | Filename : 8901TSL1 |
| University of Jyvaskyla |
ECHOANALYSIS: Experiment TS/Length
DATE : 17/04/89 DATA FROM TRANSECT : ts around light boats
ECHOSOUNDER : EY-M
REMARKS: tape a320 b70
NUMBER OF PINGS ANALYZED : 950. START AT PING NO. 5
IN 3 DEPTHLAYERS FROM 2 TO 60 METERS.
CALCULATED MEAN FISH DENSITY ALONG TRANSECT: 19718 FISH/HECTARE.
| DEPTH METERS | REGISTRATION SINGLE FISH | INTEGRAL SINGLE FISH | INTEGRAL SCHOOLS | TOTAL FISHDENSITY |
| 2–20 | 2492 F/HA | 6.1235E+06 | 2.8058E+07 | 13911 FISH/HA |
| 20–40 | 510 F/HA | 8.5197E+06 | 3.2277E+07 | 2441 FISH/HA |
| 40–60 | 636 F/HA | 6.0165E+06 | 2.5836E+07 | 3366 FISH/HA |
FISH DENSITY SPLIT INTO 3 SIZEGROUPS.
(CALCULATED WITH DATA FROM SINGLEFISH-ECHOES.)
| TS 44–50 DB: | SINGLE FISH | RES. | TOTAL. | |
| DEPTH: | 2–20 METERS | 1524 FISH/HA | 17.9 % | 8510 FISH/HA |
| DEPTH: | 20–40 METERS | 319 FISH/HA | 20.9 % | 1526 FISH/HA |
| DEPTH: | 40–60 METERS | 97 FISH/HA | 18.9 % | 513 FISH/HA |
| TOTAL: | 10548 FISH/HA | |||
| TS 51–59 DB: | SINGLE FISH | RES. | TOTAL. | |
| DEPTH: | 2–20 METERS | 971 FISH/HA | 17.9 % | 5421 FISH/HA |
| DEPTH: | 20–40 METERS | 191 FISH/HA | 20.9 % | 916 FISH/HA |
| DEPTH: | 40–60 METERS | 539 FISH/HA | 18.9 % | 2853 FISH/HA |
| TOTAL: | 9189 FISH/HA | |||
| TS 60–62 DB: | SINGLE FISH | RES. | TOTAL. | |
| DEPTH: | 2–20 METERS | 0 FISH/HA | 0.0 % | 0 FISH/HA |
| DEPTH: | 20–40 METERS | 0 FISH/HA | 0.0 % | 0 FISH/HA |
| DEPTH: | 40–60 METERS | 0 FISH/HA | 0.0 % | 0 FISH/HA |
| TOTAL : | 0 FISH/HA | |||
ALL SINGLE FISH ECHOES GREATER THAN TS=-38 DB ARE TRUNCATED
AND SHIFTED DOWN INTO THE -38 DB SIZEGROUP.
IF FISH DENSITY IN A DEPTHLAYER IS FOLLOWED BY A :
“?”: THE NUMBER OF SINGLE FISH ECHOES IS TOO LOW AND THE CALCULATED
DENSITY HAS POOR ACCURACY !
“**”: TOO MANY MULTIPLE ECHOES, ROUNDING ERRORS MAY OCCUR DUE TO
INTEGER PRESENTATION OF REAL VARIABLES....!!
ECHOSIGNALS FROM TRANSECT : ts around light boats
DEPTH LAYER : 2 – 20 METERS. CALCULATED MEAN DEPTH: 20 METERS.
NUMBER OF PINGS ANALYSED: 950 OUT OF 950. START NO.: 5
BOTTOM HAS BLOCKED UP 0 PINGS IN THIS DEPTHLAYER.
SINGLEFISH RESOLUTION IN DEPTHLAYER : 17.9 %.
INTEGRATED VALUE FROM SCHOOLS : 2.8058E+07
| TS(DB): | ECHO-NUMBER: | VOLUME DENSITY, FISH/1000 M**3: | AREA DENSITY, FISH/HECTARE: | TR VAL: | TS VAL: |
| -44 | 2 | 0.451 | 81 | 0.0558 | 6400 |
| -46 | 7 | 1.144 | 206 | 0.0782 | 5080 |
| -48 | 33 | 5.925 | 1066 | 0.0948 | 4040 |
| -50 | 73 | 9.302 | 1674 | 0.1084 | 3200 |
| -52 | 118 | 10.798 | 1944 | 0.1199 | 2560 |
| -54 | 156 | 9.630 | 1733 | 0.1300 | 2000 |
| -56 | 194 | 10.025 | 1804 | 0.1389 | 1600 |
| -58 | 200 | 3.182 | 573 | 0.1468 | 1280 |
| -60 | 310 | 26.792 | 4823 | 0.1539 | 1000 |
| -62 | 297 | 0.033 | 6 | 0.1603 | 800 |
| SINGLE FISH: | 1390 | TOTAL: | 13911 FISH/HA. |
RELATIVE SIZEDISTRIBUTION OF FISH.
(THE NUMBERS GIVE PERCENTAGE OF TOTAL DENSITY)
ECHOSIGNALS FROM TRANSECT : ts around light boats
DEPTH LAYER : 20 – 40 METERS. CALCULATED MEAN DEPTH: 40 METERS.
NUMBER OF PINGS ANALYSED: 950 OUT OF 950. START NO.: 5
BOTTOM HAS BLOCKED UP 0 PINGS IN THIS DEPTHLAYER.
SINGLEFISH RESOLUTION IN DEPTHLAYER : 20.9 %
INTEGRATED VALUE FROM SCHOOLS : 3.2277E+07
| TS(DB): | ECHO-NUMBER: | VOLUME DENSITY, FISH/1000 M**3: | AREA DENSITY, FISH/HECTARE: | TR VAL: | TS VAL |
| -44 | 3 | 0.083 | 17 | 0.0558 | 640 |
| -46 | 11 | 0.224 | 45 | 0.0782 | 508 |
| -48 | 49 | 1.061 | 212 | 0.0948 | 404 |
| -50 | 117 | 1.929 | 386 | 0.1084 | 320 |
| -52 | 135 | 0.624 | 125 | 0.1199 | 256 |
| -54 | 218 | 2.446 | 489 | 0.1300 | 200 |
| -56 | 255 | 1.263 | 253 | 0.1389 | 160 |
| -58 | 307 | 1.741 | 348 | 0.1468 | 128 |
| -60 | 376 | 2.257 | 451 | 0.1539 | 100 |
| -62 | 380 | 0.580 | 116 | 0.1603 | 80 |
| SINGLE FISH: | 1851 | TOTAL: | 2441 FISH/HA. |
RELATIVE SIZEDISTRIBUTION OF FISH.
(THE NUMBERS GIVE PERCENTAGE OF TOTAL DENSITY)
ECHOSIGNALS FROM TRANSECT: ts around light boats
DEPTH LAYER : 40 – 60 METERS. CALCULATED MEAN DEPTH: 60 METERS.
NUMBER OF PINGS ANALYSED : 950 OUT OF 950. START NO.: 5
BOTTOM HAS BLOCKED UP 0 PINGS IN THIS DEPTHLAYER.
SINGLEFISH RESOLUTION IN DEPTHLAYER : 18.9 %
INTEGRATED VALUE FROM SCHOOLS : 2.5836E+07
| TS(DB): | ECHO-NUMBER: | VOLUME DENSITY, FISH/1000 M**3: | AREA DENSITY, FISH/HECTARE: | TR VAL: | TS VAL: |
| -44 | 0 | 0.000 | 0 | 0.0558 | 6400 |
| -46 | 0 | 0.000 | 0 | 0.0782 | 5080 |
| -48 | 12 | 0.135 | 27 | 0.0948 | 4040 |
| -50 | 29 | 0.196 | 39 | 0.1084 | 3200 |
| -52 | 85 | 0.643 | 129 | 0.1199 | 2560 |
| -54 | 184 | 1.150 | 230 | 0.1300 | 2000 |
| -56 | 216 | 0.442 | 88 | 0.1389 | 1600 |
| -58 | 280 | 0.820 | 164 | 0.1468 | 1280 |
| -60 | 502 | 2.627 | 525 | 0.1539 | 1000 |
| -62 | 1443 | 10.816 | 2163 | 0.1603 | 800 |
| SINGLE FISH: | 2751 | TOTAL: | 3366 FISH/HA. |
RELATIVE SIZEDISTRIBUTION OF FISH.
(THE NUMBERS GIVE PERCENTAGE OF TOTAL DENSITY)
