Advantages of GNSS in Monitoring Crustal Deformation for Detection of Precursors to Strong EarthquakesReportar como inadecuado




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Earthquake predictions inChinahave had rare successes but suffered more tragic setbacks since the Xintaiearthquake in 1966. They have developed with twists and turns under theinfluence of the viewpoint that earthquakes are unpredictable etc. Though the Wenchuanearthquake of M8.0 in2008 inChina and the 2011 Tohoku earthquake of M9.0 inJapan were failed to predict, the GPSobservations before and after these 2 events have shown that there were precursors to these events and largeearthquakes are predictable. Features of different observation techniques, dataprocessing methods are compared and some recent studies on precursory crustaldeformations are summarized, so various advantages of GPS technique in monitoringcrustal deformation are emphasized. The facts show that anomalies or precursorsdetected from GPS observations before the great Wenchuan earthquake have beenthe most remarkable results of explorations on crustal movements and earthquake precursors in China. GPS is in deed an excellentobservation technique for earthquake prediction.

KEYWORDS

Crustal Deformation; Earthquake Prediction; Precursor to Earthquake; Wenchuan Earthquake; Tohoku Earthquake in Japan; GPS; GNSS

Cite this paper

Gu, G. and Wang, W. 2013 Advantages of GNSS in Monitoring Crustal Deformation for Detection of Precursors to Strong Earthquakes. Positioning, 4, 11-19. doi: 10.4236-pos.2013.41003.





Autor: Guohua Gu, Wuxing Wang

Fuente: http://www.scirp.org/



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