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Surface Area Variability of a North-Central Tanzanian Crater Lake
Stockholm University, Faculty of Science, Department of Physical Geography.
Stockholm University, Faculty of Science, Department of Physical Geography.
Stockholm University, Faculty of Science, Department of Physical Geography.ORCID iD: 0000-0002-3388-2965
Stockholm University, Faculty of Science, Department of Physical Geography.
2016 (English)In: Geosciences, ISSN 2076-3263, Vol. 6, no 2, 27Article in journal (Refereed) Published
Abstract [en]

A history of modern (1973–2015) surface area variability for Lake Basotu in north-central Tanzania has been reconstructed using archived Landsat images from the dry season between June and October. This record was compared to local weather data as well as larger scale weather patterns. The lake has been in a state of decline interrupted by major flood events since the beginning of the satellite record. From 1973 to 1997, the lake area was between 0.97 km2 and 4.28 km2. Lake extent abruptly increased to 13.86 km2 in 1998, when a co-occurrence of El Niño and a positive Indian Ocean Dipole led to extensive flooding. It is hypothesized that local agricultural practices leading to soil erosion and subsequent basin sedimentation have most likely increased the sensitivity of Lake Basotuto climatic fluctuations.

Place, publisher, year, edition, pages
2016. Vol. 6, no 2, 27
Keyword [en]
temperature fluctuations, El Niño, climate change, Indian Ocean
National Category
Earth and Related Environmental Sciences
Research subject
Physical Geography
Identifiers
URN: urn:nbn:se:su:diva-140068DOI: 10.3390/geosciences6020027OAI: oai:DiVA.org:su-140068DiVA: diva2:1077297
Available from: 2017-02-27 Created: 2017-02-27 Last updated: 2017-05-08Bibliographically approved

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Higgins, LindseyKoutsouris, Alexander J.Westerberg, Lars-OveRisberg, Jan
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