由于海洋环境的严酷、海上作业的风险和海底信号微弱，要实现海底大地电磁信号采集面临着重重困难。
There are many difficulties in the marine magnetotelluric prospecting due to the cruel environment in the sea, the danger of working on the sea and the faint signal from the seabed.
海底大地电磁探测要解决的首要问题是海底信号采集。
The main problem of Marine magnetotelluric prospecting is the acquisition of Marine sea bottom signal.
海底大地电磁仪为满足上述要求，其内部配备了高精度时钟源、姿态检测器件以及与海底电磁信息采集相关的自动信号测量与存储电路。
In order to solve the problems above, the high-precision clock, detecting posture device and automatic measurement circuit are equipped in Marine magnetotelluric instrument.
大地电磁法由于天然场源信号的微弱性和随机性，在野外记录和数据采集方面需要花费巨大的努力。
Due to the weakness and randomness of natural source in magnetotelluric method, a great deal of effort is spent in the field records and data acquisition.
大地电磁法由于天然场源信号的微弱性和随机性，在野外记录和数据采集方面需要花费巨大的努力。
Due to the weakness and randomness of natural source in magnetotelluric method, a great deal of effort is spent in the field records and data acquisition.
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