PhD. : 2025, Characterization of saltwater intrusion dynamics in coastal aquifers of West Bengal, India: An integrated geophysical approach, IIT Kharagpur.

M.Tech. : 2016, Applied geophysics, Kurukshetra University.

B.Sc. : 2013, Physics, Mathematics, Geology, HNBGU.

• Near-surface geophysics, Exploration geophysics, Geophysical Inversion, Electrical Resistivity Tomography (ERT), Induced polarization, Time-domain Electromagnetic (TDEM).

2016 - 2018, Project Fellow, Groundwater Division, CSIR-NGRI.

1. 2023 - International Travel Scheme (ITS) Grant, DST-SERB, Govt. of India.
2. 2023 - B. P. Radhakrishna Golden Jubilee Travel Grant, Geological Society of India.
3. 2022 - International Travel Grant by Indian Institute of Technology, Kharagpur.
4. 2021 - Best Paper award, National Research Writing Competition by Mindshare Yuva, India.
5. 2020 - Institute Senior Research Fellowship (SRF) by IIT Kharagpur, India.
6. 2018 - Institute Junior Research Fellowship (JRF) by IIT Kharagpur, India.
7. 2018 - CSIR Foreign Travel Grant (Airfare, unavailed), Govt. of India.
8. 2018 - Qualified Graduate Aptitude Test in Engineering (Gate) in Geology & Geophysics (MHRD).

1. 0000-0002-7830-7294

1. Tiwari, P.*, Rupesh, R., and Sharma, S.P. (2025). Integrated geophysical characterization of saltwater intrusion: an insight into coastal aquifers of West Bengal, India. Near Surface Geophysics, 23, 343-364, https://doi.org/10.1002/nsg.70011.
2. Mondal, R., Acharya, T., Ray, A., Sur, T., Tiwari, P., Singh, A., and Biswas, A. (2025). Integrated geophysical and geological prospecting for magnetite in the ilmenite-bearing gabbroic rock of Purulia, West Bengal, India. Ore and Energy Resource Geology 18, 100088, https://doi.org/10.1016/j.oreoa.2025.100088.
3. Tiwari, P.*, Rupesh, R., Sharma, S.P., and Ciazella, J.* (2024). Dynamics of saltwater intrusion in a heterogeneous coastal environment: Experimental, DC resistivity, and numerical modeling approaches Water 16, 1950, https://doi.org/10.3390/w16141950.
4. Rupesh, R., Tiwari, P., and Sharma, S.P. (2024). Estimation of geotechnical parameters for coal exploration from quasi-3D electrical resistivity measurements. Minerals 14, 102, https://doi.org/10.3390/min14010102.
5. Kumar, P., Tiwari, P., Biswas, A., and Acharya, T. (2022). Geophysical investigation for seawater intrusion in the high-quality coastal aquifers of India: A review. Environmental Science and Pollution Research 30, 9127-9163, https://doi.org/10.1007/s11356-022-24233-9.
6. Kumar, P., Tiwari, P., Singh, A., Biswas, A., and Acharya, T. (2021). Electrical resistivity and induced polarization signatures to delineate the near-surface aquifers contaminated with seawater invasion in digha, West Bengal, India. Catena 207, 105596, https://doi.org/10.1016/j.catena.2021.105596.
7. Rupesh, R., Tiwari, P.*, and Sharma, S.P. (2021). High-resolution quasi-3d electric resistivity tomography for deciphering groundwater potential zones in lateritic terrain. Natural Resources Research 30, 3339-3353, https://doi.org/10.1007/s11053-021-09888-4.
8. Kumar, P., Tiwari, P., Biswas, A., and Acharya, T. (2020). Geophysical and hydrogeological investigation for the saline water invasion in the coastal aquifers of West Bengal, India: A critical insight in the coastal saline clay-sand sediment system. Environmental Monitoring and Assessment 192:562, 1-22, https://doi.org/10.1007/s10661-020-08520-x.

• Tiwari, P*, and Sharma, S.P. (2024). Investigating the influence of geological heterogeneity in the advancement of the saltwater wedge: A novel perspective study employing Experimental, DC Sounding and Numerical modeling approach. EGU General Assembly 2024, Vienna, Austria [Poster, Online].
• Tiwari, P*, and Sharma, S.P. (2023). Diurnal tidal influence over self-potential measurements: A noise or signal for coastal salinity dynamics. AGU Fall meeting 2023, San Francisco, USA [Poster, Online].
• Tiwari, P*, and Sharma, S.P. (2023). Time-lapse inversion for monitoring saline water intrusion in coastal aquifers. General Assembly of the International Union of Geodesy and Geophysics (IUGG) 2023, Berlin, Germany [Poster, In-person].
• Tiwari, P*, and Sharma, S.P. (2022). Characterization of saline coastal aquifers using 2D joint inversion of ERT arrays. AGU Fall meeting 2022, Chicago, USA [Poster, In-person].
• Tiwari, P*, and Sharma, S.P. (2022). Delineating the coastal saline water intrusion zones using Electrical Resistivity Tomography (ERT). EGU General Assembly 2022, Vienna, Austria [Oral, Online].
• Tiwari, P*, Rupesh, R., and Sharma, S.P. (2019). 3D ERT mapping: An advance approach of conventional ERT for real time monitoring and mapping subsurface path for groundwater flow. 3rd National Geo-research scholar meet, WIHG 2019, Dehradun, India [Poster, In-person].
• Tiwari, P*, Vidyasagar, M., Raju, K.B. et al., (2018). An integrative approach of passive seismic with conventional ERT for mapping the subsurface lithology for groundwater prospect. in 35th-36th AHI Annual Convention and National Seminar on Hydrology 2018, Andhra University, India [Oral, In-person].

1. A Technical Report (2023). Electrical Resistivity Tomography (ERT) study for delineating suitable sites for constructing earthing pits at AF STN ARJAN SINGH, Panagarh, West Bengal, India (IIT Kharagpur).
2. A Project Report (2022). Scientific study on the construction of the embankment on the Pachwara South Coal block along the Bansloi river, Dumka, Jharkhand (Dept. of Geology & Geophysics and Civil Engineering, IIT Kharagpur).
3. A Field Report (2020). Subsidence of ground across the railway track in Salanpur, Paschim Bardhaman, West Bengal, India (Dept. of Geology and Geophysics, IIT Kharagpur).
4. Project Tour Report (2017). SANGAM: Geophysical Investigation in Allahabad-Kaushambi region (CSIR-NGRI, India: SSP-755-28, SC).
5. An Inception Report (2017). High-Resolution 3-D Aquifer Mapping along Tapi River and the adjoining region near Surat City employing Heliborne and Ground Geophysical Surveys (CSIR-NGRI, India: NGRI-2017-GW-947).

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