51cg

People

Dr Lydia Sam

Dr Lydia Sam
Dr Lydia Sam
Dr Lydia Sam

MSc, PhD, AFHEA

Lecturer

Accepting PhDs

51cg
Email Address
lydia.sam@abdn.ac.uk
Office Address
St. Mary's Building
Old Aberdeen Campus
Elphinstone Road
AB24 3UF

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School/Department
School of Geosciences




Reconstruction and Characterisation of Slope Failure Events

On 7 February 2021, a flash flood triggered by a rock-ice avalanche caused significant damage of life and property in the Indian Himalaya. Using satellite datasets, digital terrain models and simulations, we report the flow characteristics of two avalanches within a 5-year interval at the slope failure site. Prior to both the events, we observed changes in surface velocity. This study highlights that we should consider antecedent conditions, for holistic assessment of hazards.

External Memberships

  • Editor of
  • Editor of , Part of Springer Nature.
  • Editor of Frontiers Research Topic
  • Editor for the open access journal Remote Sensing (ISSN 2072-4292) / Impact Factor (2018): 4.118. Also editor of special Issues:
    • Special Issue
    • Special Issue
    • Special Issue
  • Invited guest editor for a special issue ‘’ in open access journal Hydrology (ISSN 2306-5338).
Research

Research Overview

  • Remote sensing and Geographical Information System (GIS) applications
  • Landforms and surface processes
  • Glaciology; including alpine glacier dynamics, glacial geomorphology, glacial hazards and glaciers-climate interaction
  • High-resolution terrain modelling and interpretation
  • Use of Unmanned aerial systems (UAS)/drones for environmental monitoring and Mars analogue research

Research Areas

Accepting PhDs

I am currently accepting PhDs in Geography and Environment, Geology and Geophysics.

Please get in touch if you would like to discuss your research ideas further.

Geography and Environment

  • Accepting PhDs
View Research Area

Geology and Geophysics

  • Accepting PhDs
View Research Area

Research Specialisms

  • Remote Sensing
  • Geographical Information Systems
  • Glaciology and Cryospheric Systems
  • Geography
  • Planetary Science

Our research specialisms are based on the Higher Education Classification of Subjects (HECoS) which is , published under the licence.

Funding and Grants

  • Global Challange Research Internal Fund: Pump Prime grant for the project 'Ice stupa: a solution to improve Himalayan-Karakoram mountain community resilience to water scarcity'. During August 2020 - July 2021. Funding agency: The Aberdeen Grants Academy, 51cg
  • 'Geostatistical analysis of spatiotemporal trends of COVID-19 spread in UK'. NERC-Funded QUADRAT Research Experience Placement
  • 'Assessing the long-term impact of climatic variables on coastal changes in Scotland using geospatial tools'. NERC-Funded QUADRAT Research Experience Placement
  • 'Robust infrastructure – Adapting railway maintenance to climate change(CliMaint)'. Funding Agency: VINNOVA Sweden’s Innovation Agency
Teaching

Courses

Teaching Responsibilities

GG5540/GG5563 (CURRENT APPLICATIONS OF GIS): Course Coordinator and Tutor

GG3069 (REMOTE SENSING AND GEOGRAPHICAL INFORMATION SYSTEMS): Co-course coordinator and Tutor

GG5910 (DISSERTATION PROJECT IN GIS): Supervision

GL5206/5207 (THE NATURE OF GEOLOGICAL AND GEOGRAPHICAL DATA): Tutor

GL5546 (APPLIED, INDUSTRY AND RESEARCH GEOPHYSICS): Guest Lecturer

Publications

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  • Increasing glacier end-of-summer snowline altitudes in the trans-Himalayan region of Ladakh

    Soheb, M., Coleman, M., Rea, B. R., Spagnolo, M., Bhardwaj, A., Singh, S., Sam, L., Ramanathan, A.
    Geografiska Annaler Series A-Physical Geography
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • A Nation Shaped by Ice, Shaping Global Cryospheric Research

    Crawford, A. J., Nicholas, K., Oien, R., Nienow, P., Bingham, R., Zhang, W., Akbari, V., Strickland, R., Wheel, I., Harcourt, W., Picton, H., MacManaway, J., Rea, B., Young, T. J., Cook, A., Sam, L., Bhardwaj, A., Jain, L., Cameron, E. F., Langley, B., Cowton, T., Cook, S. J., Nyqvist, C. J., Recinos Rivas, B., Howe, L.
    The Geographer, vol. The Cryosphere: Glaciers, Geohazards and Greenland, pp. 8-9
    Contributions to Specialist Publications: Articles
    • [ONLINE]

  • Ice-rock avalanches in a warming Himalaya indicate pathways toward effective preparedness

    Ahmed, R., Bhardwaj, A., Sam, L., Van Tricht, L.
    Communications Earth and Environment, vol. 7, no. 1, 217
    Contributions to Journals: Review articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • Cellular automata models for simulation and prediction of urban land use change: Development and prospects

    Gui, B., Bhardwaj, A., Sam, L.
    Artificial Intelligence in Geosciences, vol. 6, no. 2, 100142
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • Simulating urban expansion as a nonlinear constrained evolution process: A hybrid logistic–Monte Carlo cellular automata framework

    Gui, B., Bhardwaj, A., Sam, L.
    Chaos, Solitons & Fractals, vol. 199, no. Part 3, 116938
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • SAGRNet: A novel object-based graph convolutional neural network for diverse vegetation cover classification in remotely-sensed imagery

    Gui, B., Sam, L., Bhardwaj, A., Gómez, D. S., Peñaloza, F. G., Buchroithner, M. F., Green, D. R.
    ISPRS Journal of Photogrammetry and Remote Sensing, vol. 227, pp. 99-124
    Contributions to Journals: Articles
    • [ONLINE]
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Time to diffuse the “ticking time bombs” of the Himalaya

    Bhardwaj, A., Ali, S. N., Sam, L., Pandey, P.
    Physics and Chemistry of the Earth, Parts A/B/C, vol. 139, 103908
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Optimizing Object-Based Agricultural and Ecological Land Use Classification via Multi-Band Fusion and Seasonal Spectral Differences

    Gui, B., Sam, L., Bhardwaj, A., Gómez, D. S., Peñaloza, F. G., Buchroithner, M. F., Green, D. R.
    International Journal of Remote Sensing, vol. 46, no. 16, pp. 6157-6188
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • A Novel Multi-Scale Deep Learning Framework for Adaptive Urban Expansion Simulation

    Gui, B., Bhardwaj, A., Sam, L.
    Sustainable Cities and Society, vol. 130, 106594
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • It is time to build GLOF-resilient communities globally before another GLOF disaster strikes

    Ahmed, R., Sam, L., Bhardwaj, A.
    Natural Hazards, vol. 2, 41
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Quantifying pre-collapse dynamics of hanging rock-ice masses using remote sensing datasets

    Sam, L., Bhardwaj, A., Temadri, P.
    Contributions to Conferences: Other Contributions
    • [ONLINE] DOI:

  • Comparative analysis of different machine learning algorithms for urban footprint extraction in diverse urban contexts using high-resolution remote sensing imagery

    Gui, B., Bhardwaj, A., Sam, L.
    Journal of Geographical Sciences, vol. 35, pp. 664-696
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • A novel automated labelling algorithm for deep learning-based built-up areas extraction using nighttime lighting data

    Gui, B., Bhardwaj, A., Sam, L.
    Knowledge-Based Systems, vol. 306, 112702
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • From roofs to renewables: Deep learning and geographic information systems insights into a comprehensive urban solar photovoltaic assessment for Stonehaven

    Gui, B., Sam, L., Bhardwaj, A.
    Energy 360, vol. 1, 100006
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Revealing the evolution of spatiotemporal patterns of urban expansion using mathematical modelling and emerging hotspot analysis

    Gui, B., Bhardwaj, A., Sam, L.
    Journal of Environmental Management, vol. 364, 121477
    Contributions to Journals: Articles
    • [ONLINE]
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]
    • [ONLINE]

  • The high-resolution map of Oxia Planum, Mars; the landing site of the ExoMars Rosalind Franklin rover mission

    Fawdon, P., Orgel, C., Adeli, S., Balme, M., Calef, F. J., Davis, J. M., Frigeri, A., Grindrod, P., Hauber, E., Le Deit, L., Loizeau, D., Nass, A., Quantin-Nataf, C., Sefton-Nash, E., Thomas, N., Torres, I., Vago, J. L., Volat, M., De Witte, S., Altieri, F., Apuzzo, A., Aramendia, J., Arana, G., Bahia, R. S., Banham, S. G., Barnes, R., Barrett, A. M., Benedix, W., Bhardwaj, A., Boazman, S. J., Bontognali, T. R. R., Bridges, J., Bultel, B., Ciarletti, V., De Sanctis, M. C., Dickeson, Z., Favaro, E. A., Ferrari, M., Foucher, F., Goetz, W., Haldemann, A. F. C., Harrington, E., Kapatza, A., Koschny, D., Krzesinska, A. M., Le Gall, A., Lewis, S. R., Lim, T., Madariaga, J. M., Man, B. J., Mandon, L., Mangold, N., Martin-Torres, J., McNeil, J. D., Molina, A., Moral, A. G., Motaghian, S., Nikiforov, S., Oudart, N., Pacifici, A., Parkes Bowen, A., Plettemeier, D., Poulakis, P., Putri, A. R. D., Ruesch, O., Sam, L., Schröder, C., Statz, C., Thomas, R., Tirsch, D., Toth, Z., Turner, S., Voelker, M., Werner, S. C., Westall, F., Whiteside, B. J., Williams, A., Williams, R. M. E., Wright, J., Zorzano, M.
    Journal of Maps, vol. 20, no. 1, 2302361
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Segment Anything Model (SAM) for Automatic Crater Detection

    Giannakis, I., Bhardwaj, A., Sam, L., Leontidis, G.
    EGU General Assembly 2024, pp. 21146
    Contributions to Conferences: Abstracts
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Methods and insights on enabling geovisualisation for coastal communities of the North Shore of Vancouver

    DiPaola, F., Bhardwaj, A., Sam, L.
    Coastal Studies & Society, vol. 3, no. 1, pp. 3-32
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Assessing the Efficacy of Glacier Inventories to Evaluate Climate Change Impacts: Key Takeaways from Baspa River Basin

    Sam, L., Bhardwaj, A., Singh, S., Sam, B. C., Kumar, R.
    Risk, Uncertainty and Maladaptation to Climate Change: Policy, Practice and Case Studies. Sarkar, A., Bandyopadhyay, N., Singh, S., Sachan, R. (eds.). 1 edition. Springer, pp. 93-124, 32 pages
    Chapters in Books, Reports and Conference Proceedings: Chapters (Peer-Reviewed)
    • [ONLINE] DOI:

  • Evaluating the Efficacy of Segment Anything Model for Delineating Agriculture and Urban Green Spaces in Multiresolution Aerial and Spaceborne Remote Sensing Images

    Gui, B., Bhardwaj, A., Sam, L.
    Remote Sensing, vol. 16, no. 2, 414
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • A flexible deep learning crater detection scheme using Segment Anything Model (SAM)

    Giannakis, I., Bhardwaj, A., Sam, L., Leontidis, G.
    Icarus, vol. 408, 115797
    Contributions to Journals: Articles
    • [ONLINE]
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Using Seismic Data from NASA’s InSight Mission to Characterize and Relate Marsquakes with any Identifiable Surface Changes

    Asare, J. P., Bhardwaj, A., Sam, L., Gilligan, A.
    AGU Fall meeting
    Contributions to Conferences: Posters
    • [ONLINE]
    • [ONLINE]

  • Rising winter temperatures might augment increasing wheat yield in Gangetic Plains

    Shekhar, M., Singh, M., Singh, S., Bhardwaj, A., Dhyani, R., Ranhotra, P. S., Sam, L., Bhattacharyya, A.
    Theoretical and Applied Climatology, vol. 150, pp. 1531–1544
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • A discussion on the plausible role of ice streams in carving Martian outflow channels: Revisiting the earliest hypothesis by Lucchitta et al. (1981)

    Sam, L., Bhardwaj, A., Gharehchahi, S.
    Progress in Physical Geography, vol. 46, no. 5, pp. 809-818
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Multitemporal glacier inventory revealing four decades of glacier changes in the Ladakh region

    Soheb, M., Ramanathan, A., Bhardwaj, A., Coleman, M., Rea, B., Spagnolo, M., Singh, S., Sam, L.
    Earth System Science Data, vol. 14, no. 9, pp. 4171–4185
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
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