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Calibrating the Chiang Mai Seismic Array (CMAR) for Improved Event Location

机译:校准清迈地震阵列(CMAR)以改善事件位置

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摘要

Reliable single-array location is important for nuclear monitoring and other Earth science applications (e.g., Lindquist et al.2005; Guilbert et al. 2005; Rost and Garnero 2006). Effective use of small-to-medium-aperture (20–25 km or less) seismic arrays requires calibration to account for local and distant propagation effects. Array calibration reduces bias in bearing estimation and event location at regional and teleseismic distances.There is a need for calibration at the International Monitoring System array CMAR (Chiang Mai, Thailand). First mentioned by Koch and Kraundofer (1997) and Bondar et al. (1999), then by Guilbert et al. (2005) and Koper and Fatehi (2008), significant effort was devoted to study-specific, empirical corrections of bias in back-azimuth observed at CMAR. However, even though dipping Mohorovii discontinuity beneath CMAR was mentioned by Bondar et al., 1999 as a possible explanation of the observed parameter residuals, no further research was devoted to solving this hypothesis.
机译:可靠的单阵列定位对于核监测和其他地球科学应用至关重要(例如Lindquist等2005; Guilbert等2005; Rost和Garnero 2006)。有效使用中小孔径(20-25 km或更短)的地震阵列需要进行校准,以解决局部和远距离的传播影响。阵列校准可以减少在区域和远震距离的方位估计和事件定位方面的偏差。国际监测系统阵列CMAR(泰国清迈)需要进行校准。首先由Koch和Kraundofer(1997)和Bondar等人提到。 (1999),然后由吉尔伯特等。 (2005年)和Koper和Fatehi(2008年),在CMAR观测到的针对背向方位角偏差的研究特定的,经验性校正方面投入了大量精力。但是,尽管Bondar等人(1999年)曾提到将Mohorovii不连续性浸入CMAR下可能是对观测到的参数残差的一种可能解释,但没有进一步的研究致力于解决这一假设。

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