The Earth tide processing package “ETERNA”
allows the recording, pre-processing and analysis of earth tide observations
under operating system MS-DOS on an
IBM-AT compatible personal computer 80386/387 upwards. The new standard format for the storage and exchange of
high rate or high resolution Earth tide data (Wenzel 1995) is used in all parts
of this software package. The most accurate tidal
potential catalogue by Hartmannn and Wenzel (1995a,b) are included into the Earth tide analysis package
ETERNA (Wenzel 1994b,c). In all programs, the DUT1
correction due to the Earth's variable rotation has been implemented
using DUT1 values provided by the International Earth Rotation Service (IERS). Together
with the Hartmann and Wenzel (1995a,b) tidal potential catalogue, this software
package enables the pre-processing and analysis of Earth tide observations and
the prediction of Earth tide signals with a model
accuracy better than 1 ngal (1 ngal = 0.01 nm/s²). A software to compute
oceanic tidal loading effects is also included in this package.