中国东北地区上地幔远震P波方位各向异性层析成像研究

来源 :地球物理学报 | 被引量 : 0次 | 上传用户：azhan

【摘要】

：

采用NECESSArray流动地震台阵2009—2011年期间纪录的154个远震波形资料,使用考虑各向异性的走时层析成像方法获得了中国东北地区上地幔三维P波速度扰动和方位各向异性图像.结果显示,东北地区上地幔P波速度扰动和方位各向异性均存在明显的横向不均匀性.阿尔山火山区下方存在深至地幔转换带的柱状低速异常,可能暗示存在来自深部的岩浆运移通道;410 km以下,阿尔山地区下方低速异常与松辽盆地下方

【作者】

：

贾若吴建平王长在张羽张龙

【机构】

：

中国地震局地球物理研究所,北京 100081;吉林省地震局,长春130000;中国地震局地球物理研究所,北京 100081;吉林省地震局,长春130000

【出处】

：

地球物理学报

【发表日期】

：

2021年06期

【关键词】

：

中国东北各向异性远震层析成像板块俯冲

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