2:00 PM - 2:15 PM
[SEM34-08] Past continental shape inferred from GPS data part 2
Keywords:GPS, Past continental shape, Paleomagnetic data
We applied a same method as Kawai et al.,2014 with more GPS data and calculated past and future shapes of all continents of earth.
For quantitative examination of the results above, we used about 14 paleomagnetic data from Kono et al.,1985 and Randall et al.,1996 and compared the rotation angles with calculated rotations from GPS data at same age and locations.
Although the error sizes for GPS extrapolation and ages of paleomagnetic data are large, a positive correlation between paleomagnetic and GPS rotations are shown in this study. This also implies 20 years of GPS data is comparable with million year scale continental deformations. However, 3 out of 14 paleomagnetic data we used have a negative correlation between paleomagnetic and GPS rotations. This may show that there are some limits for our methods of analysis and that GPS data is incomparable to paleomagnetic data at certain time ago or at certain locations.