The study integrates the morphometric analysis, lineament evaluation and fluvial geomorphology to investigate the morphotectonic setup of Sai basin. The Sai river basin forms an integral part of the central Ganga plain where the gentle slope is significantly controlled by intra-basinal tectonic activity. The fluvial setup of the Sai basin which comprises of vast old flood plains now is displayed as an entrenched river with straight channel symmetry with multiple sinuous bends. The structural control and geomorphic asymmetry can be well established by using multi criteria approach of morphometric parameters and lineament analysis. The morphometric analysis of the basin shows that the Sai river comprises of 5th order stream basin with high elongation ratio and high bifurcation ratio suggesting structural and tectonic controls. The form factor, drainage density, and length of overland flow shows low permeability with low infiltration rate indicating sheet erosion as a major denudational process. The lineament analysis from the stream pattern analysis indicates structural control for drainages while geomorphology corresponds to the landscape of the basin. The lineaments analysis shows a major NW-SE trend in concordance to present foreland basin. Thus, the study confirms that the Sai basin has conclusive evidences of morpho-tectonic control in the central Ganga plain indicating the role of the tectonics in basin evoluation.

中文翻译：

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北方邦赛河流域地貌构造评价的多标准方法

本研究将形态测量分析、线状评价和河流地貌学相结合，研究赛盆地的地貌构造设置。赛河流域是恒河中部平原的一个组成部分，其缓坡受盆地内构造活动的显着控制。由广阔的古老洪泛平原组成的赛盆地的河流设置现在显示为一条根深蒂固的河流，具有直通道对称和多个蜿蜒的弯道。结构控制和地貌不对称可以通过使用形态测量参数和线性分析的多准则方法很好地建立。流域形态测量分析表明，赛河由五级流域组成，具有高伸长率和高分叉率，表明构造和构造控制。外形因素，排水密度和地表流长度显示低渗透率和低渗透率，表明片状侵蚀是主要的剥蚀过程。河流模式分析的线性分析表明排水结构控制，而地貌对应于盆地的景观。线条分析显示了与当前前陆盆地一致的主要 NW-SE 趋势。因此，该研究证实了赛盆地在恒河中部平原具有形态构造控制的确凿证据，表明构造在盆地演化中的作用。河流模式分析的线性分析表明排水结构控制，而地貌对应于盆地的景观。线条分析显示了与当前前陆盆地一致的主要 NW-SE 趋势。因此，该研究证实了赛盆地在恒河中部平原具有形态构造控制的确凿证据，表明构造在盆地演化中的作用。河流模式分析的线性分析表明排水结构控制，而地貌对应于盆地的景观。线条分析显示了与当前前陆盆地一致的主要 NW-SE 趋势。因此，该研究证实了赛盆地在恒河中部平原具有形态构造控制的确凿证据，表明构造在盆地演化中的作用。