研究结果初步表明该方法定位精度比较高，无论在残差、测定误差、震中分布还是震源深度方面，都比原来定位结果有较大改进。
The research result shows the location accuracy by the method is better and improves more than original location result in residual error, evaluated error, epicenter distribution and focal depth.
结果表明，用这些震相测定地震震源深度，提高了台站测定远震震源参数的精度。
It is indicated that the precision of depth determined by this station is improved for the distant earthquakes if this approach is used.
据国家地震台网测定，14日7时49分，青海省玉树藏族自治州玉树县发生7.1级地震，震源深度约33公里。
According to the National earthquake measuring, at 7:49 on the 14th, Qinghai Province, Yushu County, Yushu Tibetan Autonomous Prefecture earthquake of magnitude 7.1, focal depth about 33 km.
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