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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:17 |
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Conference: Bucharest University Faculty of Physics 2014 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
GNSS technology and its application in various research areas in Romania
Authors:
Alexandra MUNTEAN(1), E. NASTASE(1), C. IONESCU(1), V. MOCANU(2), Boudewijn A.C. AMBROSIUS(3)
Affiliation:
(1) National Institute for Earth Physics, Magurele, PO Box MG2, Romania
(2) University of Bucharest, Department of Geophysics, 6 Traian Vuia St, 020956 Bucharest 2, Romania
3) Delft University of Technology, Faculty Aerospace Engineering, 2629 HS Delft, The Netherlands
E-mail
muntean@infp.ro
Keywords:
Global Positioning System(GPS), observations, displacement
Abstract:
The present GNSS/GPS (Global Navigation Satellite System/Global Positioning System) network consists in 20 permanent stations situated in and around the Vrancea region.The network is a result of collaboration between: National Institute of Earth Physics (NIEP), Netherlands Research Center for Integrated Solid Earth Science (ISES), Delft University of Technology (TUD), Faculty of Geology and Geophysics - University of Bucharest (FGG) and more recent with TopGeocart company. The first station (LACP) was installed in 2001.The permanent network consisting of GPS antenna (LEICA AT504 choke ring and LEIAR10NONE) fixed on a pillar, receiver (LEICA CRS1000 and LEICA GRX1200) and a recording computer that operates independently, measures and records continuously GPS data observation.Data acquisition is made in real time (observation rate 1s), in RAW and RINEX data format using the Leica GNSS Spider Software.The primary goal of the network is to provide surface velocity measurement for the Vrancea region using GPS observations, and to relate these surface kinematics movements to solid Earth processes.Another type of observations performed was episodical (campaign-style) GPS observations. We have studied different areas in terms of research, a seismic swarm (Galati area) and land subsidence affected by extensiv mining works (Livezeni-Maleia mining sector, east of the Petrosani city). The aim of these studies is to characterize the present surface motion using GPS measurements. Repeated measurements over a long time span makes the technique suitable to detect the surface movements.Monitoring areas with continuous GPS measurements to identify episodic changes in the surface motions, will enable a better understanding of the dynamics and allow improved predictions of the future surface motions and the associated hazards in these areas.
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