A resource estimation system comprising: potential information acquisition means for acquiring potential information indicating potentials of a plurality of electrodes (20, 21) having a predetermined positional relationship measured at a plurality of positions in water, the potentials depending on an electric field generated in water by resources in the bottom of water; noise removal means for performing principal component analysis or independent component analysis using the potentials of the plurality of electrodes (20, 21) indicated by the potential information acquired by the potential information acquisition means to remove a noise contained in the measured potentials; and resource estimation means for estimating the presence of resources in the bottom of water based on the potential from which the noise has been removed by the noise removal means, wherein the noise removal means performs extraction of a separation component of a signal related to the resources or exclusion of separation components of the noise from separation components obtained by performing the principal component analysis or the independent component analysis based on a contribution rate or the amount of component load of the separation component obtained by the principal component analysis or the independent component analysis, and performs reconstruction of values of the separation components to calculate the potential from which the noise has been removed, and wherein the noise removal means determines the separation component of the noise in descending order of the contribution rate or an absolute value of the amount of component load, or wherein the noise removal means determines the separation component of the signal related to the resources in ascending order of the contribution rate or an absolute value of the amount of component load. potential information acquisition means for acquiring potential information indicating potentials of a plurality of electrodes (20, 21) having a predetermined positional relationship measured at a plurality of positions in water, the potentials depending on an electric field generated in water by resources in the bottom of water; noise removal means for performing principal component analysis or independent component analysis using the potentials of the plurality of electrodes (20, 21) indicated by the potential information acquired by the potential information acquisition means to remove a noise contained in the measured potentials; and resource estimation means for estimating the presence of resources in the bottom of water based on the potential from which the noise has been removed by the noise removal means, wherein the noise removal means performs extraction of a separation component of a signal related to the resources or exclusion of separation components of the noise from separation components obtained by performing the principal component analysis or the independent component analysis based on a contribution rate or the amount of component load of the separation component obtained by the principal component analysis or the independent component analysis, and performs reconstruction of values of the separation components to calculate the potential from which the noise has been removed, and wherein the noise removal means determines the separation component of the noise in descending order of the contribution rate or an absolute value of the amount of component load, or wherein the noise removal means determines the separation component of the signal related to the resources in ascending order of the contribution rate or an absolute value of the amount of component load.