The Digha–Shankarpur area in West Bengal suffers from the problem of saline water intrusion in the near-surface to shallow subsurface aquifers. In the present study, geophysical surveys were conducted and integrated with measured hydrogeological parameters to delineate the possible locations of saline water–invaded zones in the shallow aquifers. One hundred eighty-eight groundwater samples were collected, and parameters like salinity, EC, total dissolved solids (TDS), pH, temperature, and water level were measured. The geophysical survey, such as resistivity profiling, self-potential, and electrical resistivity imaging techniques, was applied. High TDS, salinity, and EC were observed in various places. Resistivity profiling survey indicates a low resistivity zone (< 10 Ωm), self-potential anomaly indicates a positive anomaly and resistivity imaging survey indicated very low resistivity zones (0–3 Ωm) in near-surface to shallow subsurface locations which are concurrent with the other coastal aquifers in the eastern part of India. These low resistivity zones are interpreted as saline water intrusion zone mixed with clay/sand layers up to a depth of 15 m possibly due to the ingression of seawater and also due to anthropogenic activities. Hence, protection from seawater intrusion from the canals into the coastal aquifers (shallow and deep) and human-made activities should be restricted to minimize the effect of saline water pollution.

西孟加拉邦的Digha-Shankarpur地区遭受了近地表水至浅表层地下地下水的盐水入侵问题。在本研究中，进行了地球物理调查，并将其与测得的水文地质参数结合起来，勾画出浅层含水层中盐水入侵区的可能位置。收集了188个地下水样品，并测量了盐度，EC，总溶解固体（TDS），pH，温度和水位等参数。应用了诸如电阻率分布图，自电位和电阻率成像技术等地球物理调查。在不同地方观察到高TDS，盐度和EC。电阻率分布图调查显示电阻率区较低（<10Ωm），自电位异常表示为正异常，电阻率成像调查显示，在近地表至浅表层以下位置，电阻率极低的区域（0–3Ωm）与印度东部的其他沿海含水层并存。这些低电阻率带被解释为盐水侵入带，其中混入黏土/砂层的深度最大为15 m，这可能是由于海水的侵入以及人为活动造成的。因此，应限制保护措施，防止海水从运河侵入沿海含水层（浅层和深层）和人为活动，以最大程度地减少盐水污染的影响。这些低电阻率带被解释为盐水侵入带，其中混入黏土/砂层的深度最大为15 m，这可能是由于海水的侵入以及人为活动造成的。因此，应限制保护措施，防止海水从运河侵入沿海含水层（浅层和深层）和人为活动，以最大程度地减少盐水污染的影响。这些低电阻率带被解释为盐水侵入带，混合了黏土/砂层，深度达15 m，这可能是由于海水的侵入以及人为活动造成的。因此，应限制保护措施防止海水从运河侵入沿海含水层（浅层和深层）和人为活动，以最大程度地减少盐水污染的影响。