• Postdoc, FIU [2025-present]

• PhD in Earthquake Seismology, IIT Kharagpur (CGPA:8.69/10.00) [2019-2025]

• MSc Geophysics, IIT Kharagpur (CGPA:8.83/10.00) [2017-2019]

• BSc Physics, University of Mumbai (CGPA:6.97/7.00) [2014-2017]

• HSC (10+2), Maharashtra State Board of Secondary and Higher Secondary Education, Pune (83.38%) [2012-2014]

• SSC (10th), Maharashtra State Board of Secondary and Higher Secondary Education, Pune (92.91%) [2012]

• Recipient of CIG The Next Generation geodynamics community workshop Travel Support for attending the CIG: TNG workshop in Breckenridge, Colorado from 4-7 August 2025 (June 2025).

• Recipient of IAGA/IASPEI Travel Grant to attend the IAGA/IASPEI Joint Scientific Meeting in Lisbon, Portugal from 31 August-5 September 2025 (April 2025).

• Recipient of Judith McKenzie Visiting Early Career Researcher Fellowship from the Department of Earth and Planetary Sciences , ETH Zurich (October - December 2024).

• Recipient of International Union of Geodesy and Geophysics (IUGG) Travel Grant for attending the 28th General Assembly of IUGG 2023 in Berlin, Germany from 11-20 July 2023 (March 2023) 

• Recipient of European Geosciences Union's (EGU) Travel Support for attending the EGU General Assembly 2023 in Vienna, Austria from 23-28 April 2023 (December 2022)

• Recipient of Science and Engineering Research Board's (SERB) International Travel Support (ITS) for attending an International Academic Conference (October 2022) 

• Recipient of Prime Minister's Research Fellowship (PMRF) offered by the Ministry of Education (MoE), Govt. of India (2021-Present)

• Recipient of the INSPIRE Scholarship for Higher Education (SHE) offered by the Department of Science and Technology (DST) (2014-2019)

Following the breaking up of the huge landmass Pangea about 200 million years ago, was a period of active tectonism and plate movement which led to a series of collisions of the broken landmasses. One such significant collision was that of the Indian landmass with Asia, which resulted in the formation of the present day Himalayan range. The continent-continent collision was so impactful that even today India continues it northward drift at a reduced rate. The active tectonics along with the complex subsurface features is responsible for creating some of the continent’s largest historical earthquakes. Proximity to this on-going collision zone makes India much more vulnerable to large earthquakes. Sikkim Himalaya situated in the central-east part of the Himalayan mountain range is a structurally complex region which has witnessed several damaging earthquakes in the past. The active seismicity associated with the poorly resolved complex subsurface features makes Sikkim Himalaya a compelling region for seismological research. Also the region is specifically favorable due to the ease of accessibility unlike the rest of Himalayas. The study of earthquakes occurring in this region poses as a key to understanding not only the seismic hazard potential but also the complex subsurface structure. I intend to use ambient noise analysis, ambient noise tomography, spatial and temporal trends of seismicity and site characterization to map the subsurface structure and understand its implications in seismic hazard potential of the region.

Topic: Seismotectonic study of the Indian plate beneath Sikkim Himalaya

• Seismic ambient noise analysis
  Mapping the ambient noise environment in Sikkim Himalaya and determining the sources of ambient noise, by considering parameters such as sensor installation method, geographic variation, population density, seasonal variation and diurnal variation. Variations in the ambient noise due to the nationwide imposed lock-down during the COVID-19 pandemic was also studied.
  Status: Study is complete and paper is published in Nature's online peer-reviewed journal Scientific Reports.

• Shear wave velocity from Ambient Noise Tomography
  Noise can be assumed as source and thus we can cross-correlate the noise to determine the travel-time delays, which can be averaged to generate a model of uniform velocity change. The cross-correlated functions can be also used to generate the dispersion curves from which various subsurface physical properties can be obtained. The surface wave group velocity obtained from the dispersion curves can be then inverted to obtain shear velocity model of the subsurface. Deriving shear wave velocities from both vertical and horizontal components of the seismometer, the variations in the velocities can be used to determine the anisotropic characteristic of the subsurface.
  Status: Study is complete and manuscript is under preparation. Abstract detailing the preliminary results of surface wave group velocities was presented at SSA Fall Tomography Conference 2022. Abstract detailing the results of shear wave velocity and radial anisotropy is accepted for Poster Presentation at the 2024 AGU Fall Meeting.

• Seismicity and fault plane solution
  Analyzing the recorded waveform to identify local earthquake wave-forms and then locating them to determine the seismically active regions in Sikkim Himalaya. Determination of fault plane solutions helps in understanding the orientation and direction of movement of the fault. Inverting the fault plane solutions help in determining the most probable direction along which the stress at that particular location is oriented at. All these parameters will enable is understanding the seismotectonic evolution of the study region.
  Status: Study is complete and manuscript is published in AGU's online peer-reviewed journal Geochemistry, Geophysics, Geosystems. Abstract detailing the results obtained from locating the local earthquakes was presented at the 2023 EGU General Assembly. Abstract detailing the results of fault plane solutions was presented at the 28th General Assembly of IUGG 2023.

• Temporal Variation of Seismicity
  Formation of Himalayas is stated to have caused changes in regional climate trends. Observed spatially varying seismicity trends elicited a curiosity to explore its temporal variation. Preliminary analysis reveals a first degree variation of seismicity with seasons, specifically monsoon cycles. I intend to use variations in ambient noise, velocity, rainfall data, groundwater level fluctuations, etc to determine the possible factors inducing change is seismicity.
  Status: Preliminary analysis is complete. Additional analysis is in progress to establish a concrete correlation.

• Site Characterization
  Ambient noise analysis, seismicity trends and shear wave velocities revealed highly heterogeneous nature of crust in Sikkim Himalaya. I intend to use Horizontal-Vertical Spectral Ratio to determine how the sites get affected during the interseismic period and thus understand its implications in the seismic hazard potential of the region.
  Status: Study is complete and manuscript is published in Seismica. Abstract detailing preliminary results was presented at the 2024 SSA Annual Meeting.

Journal Publications

• Uthaman, M., Singh, C., Singh, A., & Dutta, A. (2025). Orogenic segmentation across central and eastern Himalaya: Insights from source parameters derived from local earthquakes. J. Asian Earth Sci., p. 106567. DOI https://doi.org/10.1016/j.jseaes.2025.106567. 

• Uthaman, M., Singh, C., & Singh, A. (2024). Site characterization of Sikkim Himalaya using HVSR. Seismica, 3(2). https://doi.org/10.26443/seismica.v3i2.1282. 

• Maitreyi, Singh, C., Singh, A., Uthaman, M., Sarkar, S., Kumar, G., Dutta, A., Siddiqui, A.S., Bose, S. (2024). Assessment of Seismic Station Performance in North Chhattisgarh, India: A Comprehensive Ambient Noise Analysis. Geomat. Nat. Hazards Risk, 15(1). DOI https://doi.org/10.1080/19475705.2024.2404596.

• Uthaman, M., Singh, C., Singh, A., Hetényi, G., Dutta, A., Kumar, G., & Dubey, A. K. (2024). Complex multi-fault dynamics in Sikkim Himalaya: New insights from local earthquake analysis. Geochem. Geophys. Geosyst. 25 (6), p.e2023GC011363. DOI https://doi.org/10.1029/2023GC011363. 

• Singh, A., Kumar, G., Singh, C., Kumar, M. R., Uthaman, M., Vadlamani, R., Dutta, A., Saikia, D., & Dubey, A. K. (2024). Evidence for an imbricated lower crust and its role in accommodating crustal shortening in Sikkim Himalaya. Tectonics, 43(6), p.e2023TC008044. DOI https://doi.org/10.1029/2023TC008044. 

• Kumar, G., Singh, A., Tiwari, A. K., Singh, C., Kumar, M. R., Saikia, D., Uthaman, M. & Dubey, A. K (2023). Alteration in the mantle transition zone structure beneath Sikkim and adjoining Himalaya in the response of the Indian plate subduction. J. Asian Earth Sci 105768. DOI https://doi.org/10.1016/j.jseaes.2023.105768. [PDF] 

• Uthaman, M., Singh, C., Singh, A., Jana, N., Dubey, A. K., Sarkar, S. & Tiwari, A. K. (2022) Spatial and temporal variation of the ambient noise environment of the Sikkim Himalaya. Sci Rep 12, 274. DOI https://doi.org/10.1038/s41598-021-04183-x. [PDF] 

• Uthaman, M., Singh, A., Singh, C., Dubey, A. & Kumar, G (2021) Discerning structure and seismic hazards in the Sikkim Himalayas. Eos 102, DOI https://doi.org/10.1029/2021EO156044. [PDF]

Conference Proceedings

• Uthaman, M., Wdowinski, S., Higgins, M., Marco, S. (2025): Mechanical Modeling of Long-Term Earthquake Clustering in the Dead Sea Basin in response to Climate-induced Lake Level Variations. Accepted for poster presentation at SSA Environmental Seismology Conference Fall 2025, 14-17 Oct, Denver, Colorado, USA.

• Uthaman, M., Singh, C., Singh, A. (2025): Seasonally varying seismicity in Sikkim Himalaya. Accepted for poster presentation at SSA Environmental Seismology Conference Fall 2025, 14-17 Oct, Denver, Colorado, USA.

• Uthaman, M., Wdowinski, S., Higgins, M., Marco, S. (2025): Investigating the earthquake clustering frequency in the Dead Sea Basin in response to climatic lake level variations through mechanical modelling. Accepted for poster presentation at 2025 CIG The Next Generation geodynamics community meeting, 4-7 Aug, Breckenridge, Colorado, USA.

• Uthaman, M., Singh, C., Dutta, A., Singh, A. (2025): Source parameters estimation from local earthquakes in central and eastern Himalaya: An investigation into orogenic segmentation, Accepted for presentation at 2025 IAGA/IASPEI Joint Scientific Meeting.

• Uthaman, M., Ermert, L., Ling, A., Junker, J., Ghisleni, C., Obermann, A. (2025): Temporal variation of ambient noise at the Grande Dixence reservoir recorded by a nodal deployment, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-17811, https://doi.org/10.5194/egusphere-egu25-17811, 2025.

• Uthaman, M., Singh, C., Singh, A. (2024): Source parameters from local earthquakes in Sikkim Himalaya, 2024 AGU Fall Meeting, 9-13 Dec, Washington DC, USA.

• Maitreyi, Singh, C., Singh, A, Uthaman, M., Sarkar, S., Kumar, G., Dutta, A., Siddiqui, A.S., Bose, S. (2024): Spatial variation of ambient noise in north Chhattisgarh, 2024 European Seismological Commission, Corfu, Greece.

• Uthaman, M., Singh, C., Singh, A., Bose, S. (2024): Seismic Site Characterization of Sikkim Himalaya Using HVSR, 2024 SSA Annual Meeting, Anchorage, Alaska. 

• Singh, A., Uthaman, M. & Jana, N. (2024): Seismic Structure, Lithospheric Deformation and Seismicity of the Indian Plate in Sikkim Himalaya, 2024 SSA Annual Meeting, Anchorage, Alaska. 

• Uthaman, M., Singh, A., Singh, C., Kumar, G., Dutta, A., Jana, N., Dubey, A. K. (2023): Shear wave velocity and radial anisotropy structure beneath Sikkim Himalaya, Abstract presented at 2023 AGU Fall Meeting, 12-15 Dec, San Francisco, USA.

• Uthaman, M., Singh, C., Singh, A., Dutta, A., Kumar, G., Dubey, A. K. (2023): Focal Mechanisms and Seismicity of local earthquakes beneath the Sikkim Himalaya, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023), https://doi.org/10.57757/IUGG23-2306.

• Uthaman, M., Singh, C., Singh, A., Dutta, A., Kumar Dubey, A., and Kumar, G.: Seismicity and active tectonics:  New insights from Sikkim Himalaya, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-343, https://doi.org/10.5194/egusphere-egu23-343, 2023. 

• Singh, A., Kumar, G., Singh, C., Kumar, M. R., Uthaman, M., Saikia, D., and Dubey, A. K.: Seismic constraints on the nature and geometry of the downwelling Indian crust beneath Sikkim Himalaya, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-2463, https://doi.org/10.5194/egusphere-egu23-2463, 2023. 

• Maitreyi, , Singh, C., Singh, A., Uthaman, M., Dutta, A., Kumar, G., and Kumar Dubey, A.: b- value mapping in Sikkim and adjoining Himalayas, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-5879, https://doi.org/10.5194/egusphere-egu23-5879, 2023. 

• Uthaman, M., Singh, C., Singh, A., Jana, N., Dubey, A. K., Sarkar, S. & Tiwari, A. K. (2022) Spatio-temporal Variation of Ambient Noise in the Sikkim Himalaya. Abstract #S25E-0211 presented at 2022 AGU Fall Meeting, 12-16 Dec, Chicago, USA.

• Kumar, G., Singh, A., Tiwari, A. K., Singh, C., Kumar, M. R., Saikia, D., Uthaman, M. & Dubey, A. K. (2022) Mantle Transition Zone Structure beneath Sikkim and adjoining Himalaya. Abstract #S55C-0115  presented at 2022 AGU Fall Meeting, 12-16 Dec, Chicago, USA. 

• Uthaman, M., Singh, A., Singh, C., Kumar, G. & Dubey, A. K. (2022) Imaging the Crustal Velocity Structure Beneath Sikkim Himalaya Using Ambient Noise Tomography. Abstract #8 presented at SSA Tomography Conference Fall 2022, 28-30 Oct, Toronto, Canada.