Global mantle anelasticity reflects the dissipation mechanism of Earth's interior structure. Nevertheless, there is still an ongoing debate regarding the anelastic properties of the lower mantle (660–2900 km depth). Advancements in data accuracy and record expansion have enabled geodetic technology to offer novel methods for determining the anelastic properties of the lower mantle. This study utilizes an optimal sequence estimation method to obtain tidal Love numbers based on Doppler Orbitography and Radio-positioning Integrated by Satellite (DORIS) coordinate time series. Love number of pole tides at the 433-day Chandler wobble (CW) is 0.6280 (±0.0040) - 0.0127 (±0.0037). Love numbers and of zonal body tides at the 27.55-day Lunar month (Mm) are 0.6137 (±0.0034) - 0.0032 (±0.0035) and 0.0886 (±0.0009) - 0.0015 (±0.0007), respectively. In light of these estimates, we infer the dispersion and dissipation parameters () and (), respectively, by employing the power-law absorption band model with a reference period of 200 s and determine the weighted-mean value of the frequency exponent as 0.210 ± 0.023 that links closely related to the effective viscosity. For comparison, we calculate the corresponding values from a laboratory-based extended Burgers model and show that the anelasticity parameter functions appear more compact but still support the conclusion that varies between 0.1 and 0.3. Our results could serve as a practical constraint on the anelastic behavior of the lower mantle, contributing to a better understanding of the overall dynamics of the Earth's deep interior.

中文翻译：

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使用全球 DORIS 坐标时间序列从极地和月球月潮汐推断下地幔的非弹性

全球地幔滞弹性反映了地球内部结构的耗散机制。尽管如此，关于下地幔（660-2900 公里深度）的滞弹性特性仍然存在争论。数据准确性和记录扩展的进步使大地测量技术能够提供确定下地幔迟弹性特性的新方法。本研究利用最优序列估计方法来获取基于多普勒轨道和卫星无线电定位（DORIS）坐标时间序列的潮汐洛夫数。 433 天钱德勒摆动 (CW) 的极潮 Love 数为 0.6280 (±0.0040) - 0.0127 (±0.0037)。农历月（毫米）27.55天的爱数和纬向体潮汐分别为0.6137（±0.0034） - 0.0032（±0.0035）和0.0886（±0.0009） - 0.0015（±0.0007）。根据这些估计，我们采用参考周期为 200 s 的幂律吸收带模型，分别推断色散和耗散参数 () 和 ()，并确定频率指数的加权平均值为 0.210 ±0.023即与有效粘度密切相关。为了进行比较，我们计算了基于实验室的扩展 Burgers 模型的相应值，结果表明迟弹性参数函数显得更紧凑，但仍然支持在 0.1 和 0.3 之间变化的结论。我们的结果可以作为下地幔迟弹性行为的实际约束，有助于更好地了解地球深层内部的整体动力学。