Applications of unmanned aerial vehicles in cryosphere : Latest advances and prospects

Peer reviewedPublisher PD

A Remote Sensing Perspective on Mass Wasting in Contrasting Planetary Environments : Cases of the Moon and Ceres

Acknowledgments All the data sources have been credited in the respective figure captions. However, we thank ETH Zurich’s Research Collection, the United States Geological Survey, previous studies [2,27,30,61,62], and Arizona State University for providing the necessary datasets and tools, which we have used to generate various figures and maps in this study.Peer reviewedPublisher PD

Editorial: : Applications of Remote Sensing in Glaciology

Peer reviewedPublisher PD

Reconstruction and Characterisation of Past and the Most Recent Slope Failure Events at the 2021 Rock-Ice Avalanche Site in Chamoli, Indian Himalaya

This article belongs to the Special Issue Applications of Remote Sensing in Glaciology Funding This research was funded from the Interdisciplinary Pump Priming Fund (grants nos.: SF10237-19 and SF10206-67) and Global Challenge Research Internal Funds (grant no.: SF10206-78) granted by the University of Aberdeen, U.K., and the Scottish Funding Council. Acknowledgments We acknowledge NASA, USGS, ESA, Planet Labs, and previous studies [36,40] for providing free-of-cost medium-to-high resolution satellite images and DTMs. We acknowledge the support provided by RAMMS Team at the Swiss Institute for Snow and Avalanche Research, Davos, Graubünden, in offering the RAMMS tool. We thank the reviewers for their constructive suggestions, which improved the quality of this paper.Peer reviewedPublisher PD

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

Open Access via SHEDL agreementPeer reviewedPublisher PD

Four Decades of Understanding Martian Geomorphology: Revisiting Baker\u27s The Geomorphology of Mars

Owing to multiple successful orbiter and rover missions in the past two and half decades, our understanding of the Martian atmosphere, terrain, and subsurface has continuously evolved. This prompts the need to revisit the first holistic review of Martian geomorphology based on useful images from Viking Mission orbiters, authored by Prof. Victor R. Baker. Several of the remote sensing-based interpretations and recommendations in Baker’s (1981) paper are as valid even today as they were four decades back. With an unprecedented focus on Mars exploration in the coming decades, it is important to briefly revisit the advances and prospects in Martian geomorphology research

Analytical approximation techniques in background loop quantum cosmology

In this report we present analytical approximation techniques to describe how a scalar field with an arbitrary potential evolves in the background of a quantum FLRW spacetime described by LQC. In general there is an initial phase of superinflation independent of the shape of the potential, then there is a damping phase which leads to turnaround and then finally we have a phase of slow-roll inflation. The percentage error between the values of observables (like scalar field $\phi$ and its derivative $\dot{\phi}$) predicted by the analytic and numerical data are in general less than 5 percent and this is shown in tables. These analytical techniques work very well for all cases of the potentials (quadratic, Starobinsky and quartic) we have considered here except for the potential energy dominated regime of the Starobinsky potential. The reason is that due to the nature of the regime there we have to use damping equations several times to reach the bottom of the potential where the next regime starts which makes it infeasible. Thus we propose an alternate way of analytically understanding that regime which agrees with the numerical results

Four decades of understanding Martian geomorphology : Revisiting Baker’s ‘The geomorphology of Mars’

Acknowledgements The authors acknowledge encouragement, helpful suggestions and support from David R. Butler. Funding The author(s) received no financial support for the research, authorship, and/or publication of this article.Peer reviewedPostprin

Inflationary Dynamics and Particle Production in a Toroidal Bose-Einstein Condensate

We present a theoretical study of the dynamics of a Bose-Einstein condensate (BEC) trapped inside an expanding toroid that can realize an analogue inflationary universe. As the system expands, we find that phonons in the BEC undergo redshift and damping due to quantum pressure effects. We predict that rapidly expanding toroidal BEC's can exhibit spontaneous particle creation, and study this phenomenon in the context of an initial coherent state wavefunction. We show how particle creation would be revealed in the atom density and density correlations, and discuss connections to the cosmological theory of inflation.Comment: 13 pages, 6 figure

The challenges and possibilities of earthquake predictions using non-seismic precursors

Open Access via the Springer Compact AgreementPeer reviewedPublisher PD