Joshua Ahmed

Joshua Ahmed
University of Hull · Energy and Environment Institute

PhD, MESci Environmental Geoscience

About

6
Publications
2,359
Reads
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248
Citations
Citations since 2016
5 Research Items
237 Citations
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Introduction
I have broad interests in fluvial geomorphology and am particularly interested in the evolution and functioning of meandering river systems. I am fascinated by the causes and consequences of meander migration and how floodplain habitat can be created and destroyed. My current research focuses on the creation of Martian Geomorphology. My work has mainly focused on meandering rivers in the Amazon Basin and in Wales using remote sensing archives and GIS.

Publications

Publications (6)
Article
Full-text available
The existence of ancient fluvial systems on Mars is widely accepted, but little is known about how quickly they formed, or what environmental conditions controlled their evolution. We analyzed a sequence of well-preserved inner-bank bar deposits within the meander bends of a multistacked sinuous fluvial ridge in Aeolis Dorsa and compared them to si...
Conference Paper
Full-text available
Mangroves provide critical ecosystem services that support livelihoods and communities at the coastal margin. They are key natural flood defences to tropical cyclone driven storm surges, they store sediment that is vital for maintaining delta surface elevations in the face of rising sea levels, and transfer key nutrients to agricultural land. Over...
Article
Full-text available
Sediment supplies are a fundamental component of alluvial river systems, but the importance of sustained supplies of externally derived sediments for the evolution of meandering planforms remains unclear. Here we demonstrate the importance of sediment supply in enhancing the growth of point bars that influence the rate of sinuosity increase through...
Article
Full-text available
The role of externally imposed sediment supplies on the evolution of meandering rivers and their floodplains is poorly understood, despite analytical advances in our physical understanding of river meandering. The Amazon river basin hosts tributaries that are largely unaffected by engineering controls and hold a range of sediment loads, allowing us...

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Projects

Project (1)
Archived project
EGU 2019 session: GM8.1/HS9.2.8/NH1.15/SSP3.5 Fluvial Systems: Dynamics and Interactions Across Scales Convener: Eliisa Lotsari (Finland) Co-Conveners: Joshua Ahmed (UK), László Bertalan (Hungary), Christopher Hackney (UK) We invite you to present your work, your questions, your results and your method, to meet, to discuss, to exchange ideas and to consider old and new approaches.