Abstract：In this paper the electrical structures for the layered seabed sediments which contain natural gas hydrate were divided to 4 categories, they are low resistance sea water, fairly high resistance marine sediment, high resistance natural gas hydrate and fairly high resistance substrate. By making use of Point source direct electric current magnetoelectric resistivity, the sediment model of the natural gas hydrate was simulated, the numerical simulation results show the following: (1) natural gas hydrate deposition can cause obvious high magnetoelectric resistivity anomaly. (2) the thickness and buried depth of the natural gas hydrate deposition do not greatly affect observation results for the high magnetoelectric resistivity anomaly. (3) device elevation change to the seabed and the location change of the devices have a great affect for the anomaly. As a result applying magnetoelectric resistivity method to conduct seabed natural gasexploration is feasible and the devices mounted close to the seabed are the best way to conduct the observation.
