Table 5 The parameters of center of gravity migration and standard deviation ellipse of TSDPL.
Year | Center of gravity migration | Standard deviation ellipse | ||||||
|---|---|---|---|---|---|---|---|---|
Longitude of gravity center (°E) | Latitude of gravity center (°N) | Migration distance (km) | Standard deviation of x (km) | Standard deviation of y (km) | Elliptical abundance | Ellipse area (10,000 square kilometers) | Azimuth angle (°) | |
2005 | 114.558 | 35.055 | 619.294 | 1192.784 | 0.519 | 232.044 | 33.312 | |
2008 | 114.491 | 35.074 | 6.442 | 624.087 | 1177.475 | 0.530 | 230.839 | 33.195 |
2011 | 114.440 | 35.083 | 4.672 | 631.629 | 1170.336 | 0.540 | 232.213 | 33.078 |
2014 | 114.376 | 35.068 | 5.947 | 636.320 | 1160.019 | 0.549 | 231.876 | 33.067 |
2017 | 114.277 | 34.950 | 16.041 | 637.862 | 1153.737 | 0.553 | 231.179 | 33.095 |
2020 | 114.152 | 34.826 | 17.939 | 646.333 | 1143.978 | 0.565 | 232.268 | 33.231 |
