Earth rotation parameter estimation from LLR

Time Measurement and Earth Rotation

Earth Rotation Variations – Long Period

3.11.

The empirical Earth rotation model from VLBI observations

Aims. An alternative to the traditional method for modeling kinematics of the Earth’s rotation is proposed. The purpose of developing the new approach is to provide a self-consistent and simple description of the Earth’s rotation in a way that can be directly estimated from observations without using intermediate quantities. Methods. Instead of estimating time series of pole coordinates, differ...

Determination of Sub-daily Earth Rotation Parameters from VLBI Observations

The work presented deals with the determination of sub-daily Earth Rotation Parameters (ERPs) from Very Long Baseline Interferometry (VLBI) observations. Monitoring and interpreting the Earth's rotation variations in general is an important task for Earth sciences, as they provide boundary which support other geophysical investigations. This holds especially for sub-daily variations of the Eart...

The earth dynamic system: the earth rotation vs mantle convection

The earth dynamic system is one of the key scientific questions on the earth science. The thermodynamic behavior and gravity force of the earth and the rheology nature of the mantle prove that mantle convection is the main power source leading the lithosphere to break and move. Yet the directivity of both the structures in the crust and plate movement reminds of the earth rotation. Here we demo...