2-DIMENSIONAL MODELING BY USING COPROD2 MAGNETOTELLURIC DATA

Two-dimensional modelling on COPROD2 MT data showed that the lateral e xtent of the NACP anomalous structure is about 100 km whereas for the TOBE it is about 16 km. The NACP anomalous structure consists of two v ertical adjacent blocks with smaller resistivity (3.9 OMEGA.m) and big ger depth (14 km) to a top of the block for the western block than tho se for the eastern block (10 OMEGA.m resistivity and 9 km depth), over laying a uniform half-space resistivity of 53 OMEGA.m at 60 km depth. The TOBE anomalous structure also consists of two vertical adjacent bl ocks. The depths to the top and the bottom of western block are about 5 km and 45 km respectively and they are about 2 km and 60 km for east ern block.