Trauma experience not only could predict long-term physical and mental health problems, but also could have impact on the cognitive processes. Modified Stroop task and subliminal masked priming task were used to examine the automatic cognitive processing of earthquake-related stimulus (disaster-related, rescue-related, and earthquake-unrelated words) of healthy undergraduates at one month and two years since the Wenchuan earthquake happened, who came from the worst-hit areas of the Wenchuan earthquake. The results showed that the earthquake interference effects were showed in modified Stroop task and reversed priming effects were found in subliminal masked priming task at one month after the Wenchuan earthquake. However, two years later, earthquake interference effects and reversed priming effects were not found in the same experiments. The results showed the automatic cognitive processing of healthy subjects experienced trauma was affected by the earthquake episodic memory, and these interference effects were weakened with the passage of time.
Earthquake predictions inChinahave had rare successes but suffered more tragic setbacks since the Xintai
earthquake in 1966. They have developed with twists and turns under the
influence of the viewpoint that earthquakes are unpredictable etc. Though the Wenchuan
earthquake of M8.0 in2008 inChina and the 2011 Tohoku earthquake of M9.0 inJapan were failed to predict, the GPS
observations before and after these 2 events have shown that there were precursors to these events and large
earthquakes are predictable. Features of different observation techniques, data
processing methods are compared and some recent studies on precursory crustal
deformations are summarized, so various advantages of GPS technique in monitoring
crustal deformation are emphasized. The facts show that anomalies or precursors
detected from GPS observations before the great Wenchuan earthquake have been
the most remarkable results of explorations on crustal movements and earthquake precursors in China. GPS is in deed an excellent
observation technique for earthquake prediction.
对国内地电场观测的分析结果表明，地电场观测资料中存在着各种不规则的扰动变化和多种频谱的周期性变化，这种与地磁场或者固体潮正常变化相关的电场变化和地震前兆变化混杂在一起，很难从原始资料中识别和提取地震前兆信息。考虑到与地震有关的近场变化对地震预测的研究更具实际意义，本文中选取了汶川、玉树地震震源区附近的39个台站和文安地区12个台站的地电场观测资料，通过计算同台、同测向观测资料的长、短极距测值的比值对地震前兆信息进行分析、研究。结果表明，震中区的多数台站地电场的比值震前存在不同形态的异常变化。The analysis of geoelectric observation in Chinaindicates that geoelectric data contain various irregular changes and multiform spectrum periodic changes. These changes are correlated with normal geomagnetic field or earth tide and mixed with seismic precursor information, which make it difficult to detect and extract seismic precursor information from raw data. Considering that changes in near field are more significant to earthquake prediction, the data from 39 stations near the epicenter area of Wenchuan and Yushu earthquake and 12 near the epicenter area of Wen’an earthquake have been collected in order to calculate the ratio for further research using the long and short dipole distance observation data in the same direction of the same station. The result indicates that most of the stations appear ratio anomaly with different shape before an earthquake in the epicenter area.