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An Approach for Rapid Assessment of Seismic Hazards in Turkey by Continuous GPS Data
Istanbul Technical University, Department of Geodesy and Photogrammetry Engineering, Surveying Technique Division, Maslak, 34469, Istanbul, Turkey
Bogazici University, Kandilli Observatory and Earthquake Research Institute, Geodesy Department, Cengelkoy, 34680, Istanbul, Turkey
Strabag Inc., Niagara Tunnel Facility Project, 2520 Stanley Avenue, Niagara Falls, ON L2E6S4, Canada
* Author to whom correspondence should be addressed.
Received: 29 December 2008; in revised form: 15 January 2009 / Accepted: 15 January 2009 / Published: 20 January 2009
Abstract: The Earth is being monitored every day by all kinds of sensors. This leads an overflow of data in all branches of science nowadays, especially in Earth Sciences. Data storage and data processing are the problems to be solved by current technologies, as well as by those accessing and analyzing these large data sources. Once solutions have been created for collecting, storing and accessing data, then the challenge becomes how to effectively share data, applications and processing resources across many locations. The Global Positioning System (GPS) sensors are being used as geodetic instruments to precisely detect crustal motion in the Earth’s surface. Rapid access to data provided by GPS sensors is becoming increasingly important for deformation monitoring and rapid hazard assessments. Today, reliable and fast collection and distribution of data is a challenge and advances in Internet technologies have made it easier to provide the needed data. This study describes a system which will be able to generate strain maps using data from continuous GPS stations for seismic hazard analysis. Strain rates are a key factor in seismic hazard analyses. Turkey is a country prone to earthquakes with a long history of seismic hazards and disasters. This situation has resulted in the studies by Earth scientists that focus on Turkey in order to improve their understanding of the Earth’s crust structure and seismic hazards. Nevertheless, the construction of models, data access and analysis are often not fast as expected, but the combination of Internet technologies with continuous GPS sensors can be a solution to overcome this problem. This system would have the potential to answer many important questions to assess seismic hazards such as how much stretching, squashing and shearing is taking place in different parts of Turkey, and how do velocities change from place to place? Seismic hazard estimation is the most effective way to reduce earthquake losses. It is clear that reliability of data and on-line services will support the preparation of strategies for disaster management and planning to cope with hazards.
Keywords: ; deformation monitoring; strain analysis; seismic hazard; sensor web
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Ozener, H.; Dogru, A.; Unlutepe, A. An Approach for Rapid Assessment of Seismic Hazards in Turkey by Continuous GPS Data. Sensors 2009, 9, 602-615.
Ozener H, Dogru A, Unlutepe A. An Approach for Rapid Assessment of Seismic Hazards in Turkey by Continuous GPS Data. Sensors. 2009; 9(1):602-615.
Ozener, Haluk; Dogru, Asli; Unlutepe, Ahmet. 2009. "An Approach for Rapid Assessment of Seismic Hazards in Turkey by Continuous GPS Data." Sensors 9, no. 1: 602-615.