Table 1 Estimated FCN parameters and comparison with some recent results from the analysis of VLBI and gravity data.
From: Parameters of the Earth’s Free Core Nutation from Diurnal Strain Tides
Author | Data | TFCN | QFCN |
|---|---|---|---|
Rosat et al.10 | gravity | 429 ± 3(a) | 7,762 to 31,989(b) |
Krásná et al.12 | VLBI | 431.18 ± 0.10(a) | — |
Chao & Hsieh53 | VLBI | 441 ± 4.5(c) | — |
Vondrák & Ron15 | VLBI | 431.46 ± 0.04(a) | 19,500 ± 200(a) |
Rosat et al.11 | VLBI | 430.48 to 431.28(d) | 15,392 to 16,866(d) |
Rosat et al.11 | gravity | 397 to 516(d) | 7,763 to 323,888(d) |
Nurul Huda et al.16 (e) | VLBI | 431.33 ± 0.15(a) | \(17,{346}_{-414}^{+395}\)(f) |
this work(g) | strain | 429.1 (420.4 to 438.0) | 11,492 (3,392 to 7.2 × 107) |
