Surface Area Variability of a North-Central Tanzanian Crater Lake [Elektronisk resurs]

• 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 km 2 and 4.28 km 2 . Lake extent abruptly increased to 13.86 km 2 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. 

Ämnesord

Natural Sciences  (hsv)

Earth and Related Environmental Sciences  (hsv)

Naturvetenskap  (hsv)

Geovetenskap och miljövetenskap  (hsv)

naturgeografi  (su)

Physical Geography  (su)

Genre

government publication  (marcgt)

Indexterm och SAB-rubrik

temperature fluctuations

El Niño

climate change

Indian Ocean