3D TOMOGRAPHY OF IONOSPHERIC ANOMALIES AFTER THE 2020 TURKEY EARTHQUAKE AND TSUNAMI USING GNSS-TEC oleh Mokhamad Nur Cahyadi *email correspondence: cahyadi@geodesy.its.ac.id, Ira Mutiara Anjasmara, Ihsan Naufal Muafiry, Nurrohmat Widjajanti, Deasy Arisa, Buldan Muslim, Meilfan Eka Putra