Meghna Sengupta

• Postdoc at Leibniz Centre for Tropical Marine Research

With projections of accelerating sea-level rise, changing weather and wave regimes and increasing intensity of storm events associated with anthropogenic climate change, the physical persistence and consequently habitability of coral reef islands is a global concern. This study presents an analysis of shoreline changes on 104 coral reef islands fro...

Constructed of poorly lithified carbonate sediments with elevations of < 3-5 m above MSL, coral reef islands are considered extremely vulnerable to the effects of anthropogenic climate change, particularly sea-level rise. While some studies have shown islands are dynamic landforms with the ability to physically adjust their shape and position on th...

Reef islands are considered highly vulnerable to the impacts of anthropogenic climate change. While existing studies provide evidence of high dynamism and predominant stability over recent periods of sea-level rise, efforts to statistically link recorded morphological changes to processes are limited. We analyse shoreline changes across an expansiv...

Reef islands, elevated only a few meters above sea-level and restricted in area, are not only confronted with rising sea-levels, but the surrounding reef ecosystems, which are the only source of sediment maintaining those islands, are threatened by global (e.g. ocean warming and acidification) and local anthropogenic (e.g. pollution and destructive...

Climatic change threatens the persistence of atoll islands and the cultural and ecosystem services they support. However, adaptation and ecosystem management are constrained by lack of knowledge of island-specific transformations. We present an empirically-based island change framework that characterises the physical trajectory of islands, based on...

Empirical records of reef island shoreline change show magnitude and styles of island change are highly variable over various spatio-temporal scales. However, the attribution of processes as drivers of observed change is poorly resolved. In this study, we develop machine-learning models to explore the drivers of shoreline and positional change of i...

This study discusses the calving event took place in Prydz Bay of East Antarctica during the epoch of 2013-2015 using high resolution multispectral data from Indian Linear Imaging Self Scanning Sensor (LISS-IV) aboard IRS-P6 satellite. The present study has been conducted on Larsemann Hills, Prydz Bay, East Antarctica. The two LISS-IV images (5.8 m...