Continued Operation of an Earthquake Strong Motion Accelerograph Network Along the Mexican Subduction Thrust

格雷罗加速器阵列由格雷罗州和邻近的墨西哥各州的30个强震加速器站组成。它是在国家科学基金会的CEE-82-19432赠款下安装的，并在随后得到国家科学基金会的支持和研究所的支持下继续全面运作，墨西哥国立自治大学。该阵列目前每年记录50到80次地震的加速度图，产生的数据集包括超过25次重大地震的记录，近距离有四次6.9级或更高的地震。最重要的是，它位于一个成熟的地震空区，在那里发生8.2级地震的可能性被认为比北美其他任何地方都要大。格雷罗阵列的目标是：(A)获得墨西哥俯冲推覆带上7.5级至8级地震引起的强烈震动的高质量加速度记录；(B)分发这些数据，并利用它们以足够的精度预测未来地震的强地面运动，以便对工程应用有用；以及(C)特别解决俯冲带环境中基底岩石的地面运动问题，该环境与阿拉斯加、太平洋西北部和波多黎各的情况相似。这一行动是为了继续运行该阵列；对记录的任何新数据进行编目和分发；解释已记录的加速度图；并使用现有最好的方法，试图预测由预期的未来俯冲带地震引起的强烈地面运动的性质。

The Guerrero Accelerograph Array consists of 30 strong motion accelerograph stations in Guerrero and neighboring states of Mexico. It was installed under NSF grant CEE-82-19432 and has continued to be fully operational through subsequent support from the National Science Foundation, supplemented by support from the Instituto de Ingenieria, Universidad Nacional Autonoma de Mexico. The array is currently recording accelerograms from 50 to 80 earthquakes each year, and the resulting data set includes records from over 25 significant earthquakes, with four earthquakes having magnitudes 6.9 or greater at close range. Most important, it is located in a mature seismic gap where an earthquake with magnitude up to 8.2 is considered more likely to occur than any at other place in North America. The objectives of the Guerrero array are: (a) To obtain high quality accelerograms from strong shaking caused by magnitude 7.5 to 8 earthquakes along the Mexican subduction thrust; (b) to distribute these data and to use them to predict the strong ground motions from future earthquakes with sufficient precision so as to be useful for engineering applications; and (c) in particular, to address the problem of ground motion on basement rock in a subduction zone environment similar to that found in Alaska, the Pacific Northwest and Puerto Rico. This action is for continued operation of this array; to catalog and distribute any new data recorded; to interpret the accelerograms that have been recorded; and to use the best available methods to attempt to predict the nature of the strong ground motions resulting from anticipated future subduction-zone earthquakes.