Magnetotelluric data set of the northern Songliao Block, NE China

The study area covers 120,000 square kilometers in NE China. Field collection of MT data was carried out with MTU-5 instruments, manufactured by Phoenix Geophysics of Canada. This study used a total of 138 broadband MT sites. The signal acquisition time was less than one day at each site. The signal acquisition time was about 20 hours at each site. Each MT site measured 5 components, 3 magnetic field components and 2 mutually orthogonal horizontal electric field components, approximately 10 km site spacing along several lines.本研究的研究区域覆盖中国东北地区12万平方千米。大地电磁（Magnetotelluric, MT）野外数据采集采用加拿大凤凰地球物理公司（Phoenix Geophysics）生产的MTU-5型仪器完成。本研究共纳入138个宽频大地电磁测点，各测点的信号采集时长约为20小时，均不足1天。每个大地电磁测点采集5个分量的数据，包含3个磁场分量与2个相互正交的水平电场分量；多条测线上的测点间距约为10千米。