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Mapping changing shorelines in the Malombe and Chiuta lakes of Malawi-environmental effects of recent climatic variations

  • This study examines patterns of climate variability by mapping shoreline changes between 1973 and 2008 for two shallow lakes in Malawi, East Africa. Multi-temporal LANDSAT data covering eight different years within the period of investigation were utilised for lake-area mapping, using image classification techniques. The approach was verified using simple comparisons with local rainfall data and satellite altimetry data. Results indicated that the lake areas varied between the different years investigated and that, although the lakes were affected by the same climate-forcing mechanisms, the individual basin characteristics had a critical effect on their responses. The most likely drivers for the climate-related shoreline variations are the El Nino/Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD), causing synchronous changes to the water levels in both lakes, albeit showing differences in climate signal amplification.

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Metadaten
Author:Zuze DulanyaORCiD, Jane M. Reed, Martin H. Trauth
DOI:https://doi.org/10.1016/j.catena.2012.10.016
ISSN:0341-8162 (print)
Parent Title (English):Catena : an interdisciplinary journal of soil science, hydrology, geomorphology focusing on geoecology and landscape evolution
Publisher:Elsevier
Place of publication:Amsterdam
Document Type:Article
Language:English
Year of first Publication:2013
Year of Completion:2013
Release Date:2017/03/26
Tag:ENSO/IOD; Lake Chiuta; Lake Malombe; Lake-area
Volume:104
Issue:10
Pagenumber:9
First Page:111
Last Page:119
Funder:Commonwealth Commission and Chancellor College of the University of Malawi
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Erd- und Umweltwissenschaften
Peer Review:Referiert