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| AfricaArray | |
|---|---|
| Name | AfricaArray |
| Formation | 2003 |
| Type | Research network |
| Location | Johannesburg, South Africa |
| Region served | Africa |
AfricaArray AfricaArray is a pan-African geophysical research and training network that coordinates seismic, geodetic, and geophysical monitoring across the African continent. It links academic institutions, national geological surveys, and international research centers to improve understanding of seismic hazards, lithospheric structure, and continental dynamics. The initiative fosters collaboration among scientists from diverse institutions to enhance observational coverage, data sharing, and capacity building.
AfricaArray originated in the early 2000s as an effort to address sparse seismic coverage on the African Plate by connecting researchers from University of the Witwatersrand, University of Johannesburg, Council for Geoscience (South Africa), and international partners such as IRIS (Incorporated Research Institutions for Seismology), US Geological Survey, and GFZ German Research Centre for Geosciences. Initial deployments of temporary broadband seismic arrays drew on techniques developed at Caltech, Massachusetts Institute of Technology, and Scripps Institution of Oceanography. Regional workshops hosted in cities like Cape Town, Nairobi, and Addis Ababa brought together scientists from Makerere University, University of Dar es Salaam, University of Lagos, and Université Cheikh Anta Diop. Over subsequent years the network expanded through collaborations with national institutions including Kenya Meteorological Department and Ethiopian Institute of Geological Survey and by participating in multinational programs such as GEOSCOPE and African Union initiatives on natural hazards.
AfricaArray’s mission centers on improving seismic and geophysical observational capacity across Africa to support hazard assessment, resource exploration, and fundamental research. Objectives include deploying seismic and GPS stations in under-monitored regions, generating open geophysical datasets for use by researchers at Imperial College London, Columbia University, University of Oxford, and Université de Cape Town, and strengthening regional expertise through training with organizations like UNESCO and International Union of Geodesy and Geophysics. The network aims to inform policy decisions made by institutions such as African Development Bank and regional bodies including the Intergovernmental Authority on Development.
AfricaArray operates as a distributed collaboration among universities, national surveys, and international research bodies. Core members historically included University of the Witwatersrand, University of Cape Town, Rhodes University, and Stellenbosch University, while affiliated partners have included University of Nairobi, University of Ibadan, University of Khartoum, and Cairo University. The governance model involves steering committees with representatives from partner institutions and liaison roles for agencies like IRIS and European-Mediterranean Seismological Centre. Membership encompasses postgraduate students, early-career researchers, and senior scientists from institutions such as University of Pretoria, Addis Ababa University, University of Zambia, and University of Botswana.
Activities include temporary and permanent seismic deployments, GPS campaigns, magnetotelluric surveys, and outreach workshops. Field programs have placed instruments in tectonically relevant regions like the East African Rift, Atlas Mountains, and Cape Fold Belt, often collaborating with national surveys such as the Geological Survey of Namibia and Sudan Geological Research Directorate. AfricaArray organizes summer schools and short courses hosted by institutions including University of the Witwatersrand, University of Nairobi, Université Cheikh Anta Diop, and laboratories at GFZ. Public-facing activities have engaged stakeholders from South African National Defence Force disaster units, municipal authorities in Johannesburg, and emergency management agencies.
Research outputs include earthquake catalogs, seismic tomography models, crustal thickness maps, and mantle shear-wave velocity profiles used by researchers at University of California, Berkeley, University of Cambridge, Swiss Seismological Service, and National Oceanography Centre. AfricaArray-generated datasets feed into global repositories maintained by IRIS, ORFEUS, and GFZ Data Services. Scientific results have been published in journals read by scientists at Nature Geoscience, Journal of Geophysical Research, Geophysical Journal International, and Tectonophysics, advancing understanding of African lithosphere segmentation, rift dynamics, and intraplate seismicity.
Capacity building emphasizes hands-on training for students and technicians from universities and national surveys. Programs have included instrument installation workshops, data processing clinics, and mentorship opportunities involving faculty from Massachusetts Institute of Technology, University of Oxford, Stanford University, and regional lecturers from University of the Witwatersrand and Makerere University. Alumni have progressed to roles in national institutions including the Kenya Meteorological Department, Geological Survey of Tanzania, and private-sector exploration companies operating in basins such as the Mozambique Channel and Niger Delta.
Funding has come from a mix of national research councils, international agencies, and philanthropic sources, with contributions from entities such as National Science Foundation (United States), UK Research and Innovation, European Commission, and foundations involved in global science capacity like the Carnegie Corporation. Partnerships extend to multinational scientific consortia including IRIS, African Union, GEOSCOPE, and university networks spanning University of Cape Town, Imperial College London, and Columbia University. Collaborative grants have supported instrument procurement, long-term station maintenance, and regional training initiatives coordinated with agencies like UNESCO and African Development Bank.
Category:Earth science organizations