Related Experiment Video
Updated: Aug 8, 2025

Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
Published on: August 7, 2017
Valley formation aridifies East Africa and elevates Congo Basin rainfall
Callum Munday1, Nicholas Savage2, Richard G Jones2
1Climate Research Lab, School of Geography and the Environment, University of Oxford, Oxford, UK. callum.munday@ouce.ox.ac.uk.
East African valleys channel water vapor, causing aridification and impacting evolutionary shifts. The East African Rift System
Area of Science:
- Climate Science
- Paleoclimatology
- Evolutionary Biology
Background:
- East African aridification is a proposed driver for vegetation and animal lineage evolution, including hominins.
- The evidence for increasing aridity and the mechanisms behind it remain debated and unclear.
Purpose of the Study:
- To investigate the role of the East African Rift System (EARS) in regional aridification.
- To clarify the mechanisms driving dry conditions in East Africa and their impact on climate.
Main Methods:
- Utilized numerical model experiments to simulate climate dynamics.
- Focused on the impact of valleys within the East African Rift System on water vapor transport.
Main Results:
- Valleys in the EARS are identified as key to developing East African dry conditions.
- These valleys channel water vapor to Central Africa, enhancing Congo Basin rainfall.
- Without these valleys, EARS uplift would lead to wetter East Africa and drier Congo Basin.
Conclusions:
- The tectonic development of Africa, specifically the EARS valleys, has significantly shaped regional rainfall patterns.
- These rainfall shifts have profound implications for the evolution of African flora and fauna.
More Related Videos
08:09Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
Published on: September 12, 2017
10:19A CO2 Concentration Gradient Facility for Testing CO2 Enrichment and Soil Effects on Grassland Ecosystem Function
Published on: November 21, 2015
Related Concept Videos
Precipitation and Co-precipitation
Precipitation Processes
Formation of Concentrated Urine
Precipitation Gravimetry
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
Formation of Dilute Urine
Filtrate Osmolarity in the PCT
Initially, as the filtrate passes through the proximal convoluted tubule (PCT), its...
Precipitation of Ions
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is: