东天山某环状熔融岩体航空电磁场特征及深部找矿研究

杨波, 孙栋华

Airborne electromagnetic characteristics and deep prospecting of a ringed molten rock mass in eastern Tianshan

YANG Bo, SUN Dong-Hua

图9 航磁垂向一阶导数影像

Fig.9 Magnetic first vertical derivative image