AUSPOS ON-LINE GPS DATA PROCESSING IN DETECTING CRUSTAL DISPLACEMENTS DUE TO 2005 NIAS EARTHQUAKE

Agustan  Agustan

Authors

Agustan Agustan Center for Natural Resources Inventory Technology

Abstract

The development of on-line GPS data processing nowadays is promising to be used. Therefore, it is necessary to assess the on-line GPS data processing by comparing the results to scientific GPS data processing. The 8.7Mw earthquake on 28^th March 2005 in Nias Island displaced northern part of Sumatra Island. It includes small islands in the western part of Sumatra. To detect these displacements, GPS campaigns have been conducted in Simeulue Island, Nias Island and Siberut Island. These GPS data are processed by using AUSPOS facilities. A root mean square (RMS) is used as a quality indicator in GPS data processing. The results show that on-line GPS processing can be used as a tool to process GPS data to detect crustal displacements due to a big earthquake.

Author Biography

Agustan Agustan, Center for Natural Resources Inventory Technology

Agency for the Assessment and Application of Technology (PTISDA-BPPT)
Principal contact for editorial correspondence.

References

Lowry, A. R., Hamburger, M. W., Meertens, C. M. and Ramos, E. G. (2001) GPS Monitoring of Crustal Deformation at Taal Volcano, Philippines, Journal of Volcanology and Geothermal Research, Vol. 105, pp. 35-47.

Michel, G. W., Yu, Y. Q., Zhu, S. Y., Reigber, C., Becker, M., Reinhart, E., Simons, W., Ambrosius, B., Vigny, C., Chamot-Rooke, N., Le Pichon, X., Morgan, P. and Matheussen, S. (2001) Crustal Motion and Block Behaviour in SE-Asia from GPS Measurement, Earth and Planetary Science Letters, Vol. 187, pp. 239-244.

Rossikopoulos, D., Fotiou, A., Livieratos, E. and Baldi, P. (1998) A Rigorous Analysis of GPS Data To Detect Crustal Deformations. Application in the Area of The Ionian Sea, Tectonophysics, Vol. 294, pp. 271-280.

Scherneck, H. G., Johansson, J. M., Mitrovica, J. X. and Davis, J. L. (1998) The BIFROST Project: GPS Determined 3-D Displacement rates in Fennoscandia from 800 days of Continuous Observations in the SWEPOS Network, Tectonophysics, Vol. 294, pp. 305-321.

Seeber, G. (1993) Satellite Geodesy, Foundations, Methods and Applications, Walter de Gruyter, Berlin, 531p.