This paper explores the geomorphological features of Ninety East Ridge (NER), Indian Ocean. NER presents especially long and linear topographic structure formed as a result complex regional geophysical geologic development. The research is based on high precision bathymetric, geological gravity data. submarine geomorphology was digitized three cross-sectional profiles. profiles were selected in...

Study area is located in the higher folded belt in the Zagros Mountain in the Iraqi Kurdistan. Analyzed geomorphic indices included sixteen sub basins: the stream gradient index (SL), drainage basin asymmetry (AF), hypsometric integral (Hi), Valley floor width-valley height ratio (VF) and mountain front sinuosity (J) is obtained relative of tectonic activity in the study area. These indices abo...