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EVALUATION OF MICROGRAVITY AND GPS/GNSS DATA TOGETHER BY THE NETWORK SYSTEM AND A CASE STUDY IN IZMIR (WESTERN TURKEY)

AUTHOR/S: O. PAMUKCU, A. YURDAKUL, M. KAHVECI, M. SALK, T. GONENC, E. ERSAY, S. ERGINTAV, A. BELGEN
Sunday 1 August 2010 by Libadmin2010

10th International Multidisciplinary Scientific GeoConference - SGEM2010, www.sgem.org, SGEM2010 Conference Proceedings/ ISBN 10: 954-91818-1-2, June 20-26, 2010, Vol. 1, 777-782 pp

ABSTRACT

The monitoring of gravity changes in a region enables the investigation of regional
structural elements depending upon the changes in mass compensation. Especially the
microgravity method, which is preferred in recent years, yields good results from
different part of the world. With the addition of GPS/GNSS monitoring to microgravity
studies, the behavior of a region both in the lateral and vertical directions can be
estimated. Besides, the main fault system and the mechanical links can be determined
owing to this study. The mass changes within the crust in vertical direction are
evaluated with the help of microgravity method while the lateral movements of the
same blocks are evaluated by GPS/GNSS. Hence, by evalauating GPS/GNSS together
with the network system, tectonical deformation can be illustrated in detail.

The objective of our study is to solve the fault mechanisms that would pose a threat and
to define the kinematic structure in space and time. In order to realize this activity,
large-scale microgravity and GPS/GNSS network system measurements are achieved in
western Turkey which has high tectonic activity by The Scientific and Technological
Research Council of Turkey (TÜBİTAK) Marmara Research Centre. Besides, another
stud within the TÜBİTAK Project numbered 108Y285 that is carried out in the south
part of Izmir at a smaller scale will be introduced. The main purpose of this small scale
activty is to focus to fault systems in the high populated areas.

As a result, the interpretation of GPS/GNSS together with the microgravity &
GPS/GNSS network system will make it possible to determine the factors governing the
active tectonism in southern Izmir which is included within the Aegean extending
system.

Keywords: GPS, microgravity, Izmir, deformation