The field of seismology requires good knowledge of science, students aspiring to join it require a basic background in science, right from Class XI onwards. Students having a degree in geology and geophysics as well as those having a basic degree in Engineering can specialize in seismology. IIT Kharagpur, offers an M. Tech. Degree in computation seismology. Department of Earthquake Engineering, IIT Roorkee, Department of Geophysics, BHU ( Varanasi ), Wadia Institute of Himalyan Geology, Dehradun and the GIS Institute, Noida are other reliable names imparting knowledge in the field.
Hence its preferable that you pursue your sciences.
Hope this helps.