【摘要】 在人工地震Pg波波前成像方法结果的基础上,给出了一种新的高分辨折射地震剖面资料处理的射线数分布分析法.该方法可用来更进一步地确定地壳上部较复杂结构中可能的折射界面,特别是基底的空间位置和展布形态特征,使得高分辨折射地震测量资料的处理更加深入精细.我们将该方法应用于青藏高原东北缘阿尼玛卿缝合带东段上部地壳基底结构的研究,给出了阿尼玛卿缝合带东段及其两侧邻近区域的基底形态及展布特征.更多还原

【Abstract】 Based on the results obtained from Pg wavefront imaging in active source deep seismic sounding, we propose a new ray hit analysis method for high-resolution seismic refraction profile data processing. This method can be used to further determine possible refraction interface, especially spatial location of basement and its pattern characteristics in complex upper crustal structure region, making data processing for high-resolution refraction profiles more fine. We use this method to study the crystalline basement structure of east part of A′nyemaqen suite zone at northeast side of Qinghai-Xizang Plateau and the basement patterns as well as its spreading features at the east part of A′nyemaqen suite zone and its adjacent region were determined.更多还原