根据跨越加利福尼亚州Medicine湖火山的台阵得到的远震P波相对走时残差值,揭示出一些高速异常,它们位于该火山下方的地壳、上地幔之中,从很浅的地方一直延伸到至少100km深处。这些初步的资料还表明,该火山东南翼年轻的熔岩流下方有一个浅的低速体存在 Based on the teleseismic P-wave relative travel time residuals obtained from the array of the Medicine Lake volcanoes in California, some high-velocity anomalies are revealed that are located in the crust below the volcano, in the upper mantle and from very shallow to at least 100km deep. These preliminary data also show that there is a shallow low-velocity body beneath the young lava flow in the southeastern wing of the volcano