LUCIAN BESUTIU, VASILE NEAGA, ADRIAN NICOLESCU,
GEORGETA BESUTIU, ION ILIES
(ABSTRACT)
The achievement of the gravity reference network (grn) of Republic of Moldova
represents the first step in merging the national gravity networks of Romania
and Republic of Moldova and, based on it, the construction of common gravity
images crossover the state borders. The project is a joint venture of the Geological
Institute of Romania and the Institute for Geophysics and Geology of the National
Academy of Sciences of Republic of Moldova. It stands as a part of a larger
project, GRANAT (Gravity Networks Advanced Ties) which was intended to join
gravity images over the state borders of Romania, Ukraine and Republic of Moldova,
in an area where several major geotectonic units met each other: East European
Craton, Alpine Carpathian Orogene, North Dobrogea, Moesian Plate and Scythian
Plate. The paper mainly deals with problems connected to gravity determinations
along the ties of the Moldavian grn. Instruments and used methodology are described
and results are carefully analyzed. The grn consists of 7 first order gravity
stations regularly spaced over the Moldavian territory. They have been tied
using a LaCoste & Romberg model D gravity meter and gravity intervals between
them have been highly accurate determined. Gravity vertical determinations
in every base station have been also added.
Some considerations on the achieved internal and external accuracy are made.
Provisional absolute values within the Moldavian grn have been obtained by
linking the new network to the national reference networks of Romania.
Key words: gravity, network, reference network, Romania, Republic of Moldova