The coastal sites of Ramnagar-I and Ramnagar-II Administrative Blocks (Kanthi Coastal Plain), Purba Medinipur District, West Bengal, India, reveal various morphological features, which are represented by four categories of surface formation under different processes in the present study through a contour plan with 50 cm contour interval. The first category of landform being some isolated ridges with above 10 m elevation, which are stretched out in a linear pattern parallel to the modern shoreline behind Ramnagar-Deuli beach ridge section. The second set of landforms of the area which ranges from 7 m to 10 m elevation from the MSL is extended in the form of sandy terrace and continuous sand ridge surface along the sides of the first category landform. The third category of landform is visible along the edges of the second category of continuous sand ridge topography in the form of an extensive sandy tract with the reactivated sand surface.Last category of the ancient surface with an elevation of 2.5 m to 5.0 m above MSL is also clearly visible from the wide valley flat surface depressions in between the Contai-Paniparul beach ridge section and Ramnagar-Deuli beach ridge section at present. Some crenulated ridges of sandy sediments observed in the the present contour plan, particularly along the bank of abandoned channels. These are most probably evolved in the ancient period by natural levee depositions from various fluvio-tidal channels of the coastal plain. They are also categorized into older natural levees and younger natural levees delineated from the tonal contrasts of images and field verification of lose sediments. The older natural levees represent oxidized soils and the younger one represents the grey white color of sediments. Tidal prisms are the result of spring time tidal waves, keeping pressure on the seaward sides and spill over the backshore area by entering into the tidal channels at the time of high tide in the coastal belt. The study reveal the effects of significant increase of tidal prism estimated from 1990 to 2017.

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印度西孟加拉邦Digha-Sankarpur沿海地带的地貌演化和一些受侵蚀影响的地区的评估

印度西孟加拉邦Purba Medinipur区Ramnagar-I和Ramnagar-II行政街区（坎提沿海平原）的沿海地点揭示了各种形态特征，在本研究中，本研究通过不同过程中的四种地表形成来表示这些形态特征。等高线图，等高线间隔为50厘米。第一类地貌是海拔10 m以上的一些孤立的山脊，它们以与Ramnagar-Deuli海滩山脊段后面的现代海岸线平行的线性模式伸展。从MSL海拔7 m到10 m的区域的第二组地形沿着第一类地形的侧面以沙阶和连续的沙脊表面的形式延伸。第三类地貌沿第二类连续沙脊形貌的边缘可见，呈广泛的沙带形式，具有重新活化的沙面，最后一类古陆面海拔高于MSL 2.5 m至5.0 m从目前的Contai-Paniparul海滩山脊部分和Ramnagar-Deuli海滩山脊部分之间的宽谷平面凹陷处也可以清楚地看到。在目前的等高线平面图中，特别是沿废弃河道的岸边观察到一些砂状沉积物的山脊。这些很可能是在古代由沿海平原各种潮汐河道的天然堤防沉积物演化而来的。根据图像的色调对比和损失沉积物的现场验证，它们还分为较旧的天然堤防和较年轻的天然堤防。较旧的天然堤防代表氧化土壤，较年轻的天然堤防代表沉积物为灰白色。潮汐棱镜是春季潮汐的结果，它们在沿海带涨潮时进入潮汐通道，从而保持了向海两侧的压力并溢出沿海地区。该研究揭示了从1990年到2017年估计的潮汐棱镜显着增加的影响。在沿海带涨潮时进入潮汐通道，从而保持向海两侧的压力并溢出后海区域。该研究揭示了从1990年到2017年估计的潮汐棱镜显着增加的影响。在沿海带涨潮时进入潮汐通道，从而保持向海两侧的压力并溢出后海区域。该研究揭示了从1990年到2017年估计的潮汐棱镜显着增加的影响。