The topographic elevations for this paper were performed along the Timis and Mures Rivers, including the following locations: Timisoara, Covaci, Lugoj, (Timis County), Milova, Arad (Arad County), Caransebes-Jupa (Caras-Severin County). Leica GPS 1200 is a very powerful device with many applications and functions that can satisfy the requirements of users worldwide. GPS1200 can be used either as reference or rover for static or kinematic measurements (RTK); it can be used for topographic elevations, tracing, monitoring, earthquake measurements. GPS1200 receivers are designed to operate under the roughest conditions. They are waterproof up to 1 m water depth, shock, vibration, rain, dust, sand and snowproof, able to operate at temperatures between -40°C and +65°C. Topographic measurements were performed to determine the volumetric quantity of different sorts of ballast mineral aggregates: sand 0-4, gravel 4-8, gravel 8-16, gravel 16-31, sieve oversize. Topographic and land survey measurements were taken with Leica GPS1200, and the data were downloaded and processed with LEICA Geo Office Combined. The data necessary for creating the 3D model of the quantities of the ballast mineral aggregates and the volumetric calculation were processed with Surfer 8.0 software created by Golden Software. The measurements were taken with ROMPOS – the Romanian Position Determination System, a project of the National Agency for Cadastre and Land Registration. This system provides precise reference positioning and ETRS European coordinates through the Network of National Permanent GNSS Stations. ROMPOS is based on Global Navigation Satellite Systems – GNSS (GPS/GLONAS/GALILEO - in the future), providing data for positioning purposes. The system allows for an improved determination of a position with millimetre accuracy. The GNSS permanent stations used for the purpose of this paper are in Timisoara, Faget, Arad and Resita.

topographic elevations, mineral exploitation, global system positioning (GPS), surfer

Presentation: oral