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MR. BruCE MUTEGI SEISMOLOGIST Mr. Daniel Mutua ICT Technologist

UNIVERISTY OF NAIROBI. Department Of Geology. SEISMOLOGY SECTION. MR. BruCE MUTEGI SEISMOLOGIST Mr. Daniel Mutua ICT Technologist. History of Seismology in Kenya.

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MR. BruCE MUTEGI SEISMOLOGIST Mr. Daniel Mutua ICT Technologist

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  1. UNIVERISTY OF NAIROBI Department Of Geology SEISMOLOGY SECTION MR. BruCE MUTEGI SEISMOLOGIST Mr. Daniel Mutua ICT Technologist

  2. History of Seismology in Kenya • 1963:-First seismic station in Kenya: World-Wide Standardized Seismographic Network (WWSSN) (IRIS) station at UoN, Chiromo Campus • 1993:-Five additional digital seismic stations (temporary) • 1995 the 1963 USGS station moved to KILIMAMBOGO (KMBO). • 2002:- Primary Seismic station installed as part of the Comprehensive Nuclear Test ban Treaty at Kilimambogo • 2002:- Infrasound (7 ARRAY STATION) by CTBTO at Karura. • 2010:- One Africa Array Seismic Station (Nairobi) • 2012:- Two GFZ-potsdam Stations ( Kibwezi and Lodwar) • 2013- 1 Africa array station (Asumbi) and 2 International Science Programmestations (Magadi & Eldoret) • 2016 – 1 ISP Seismic Station Installed at Molo (NOT WORKING PROPERLY)

  3. The General Seismicity of the East and Southern Africa Region • Kenya is located within the seismically active East African Rift System running from the Afar in the North to Mozambique in the South. • This is the main source of seismic activity in Africa.

  4. The Seismicity of Kenya • Kenya's great populations lives to the west and south west of the KRS. Unfortunately the seismic active area cuts right across these populated sections except for Mombasa City. • However, Mombasa city likewise lies close to the seismically active Davie Fracture extending from the Mid-Mediterranean oceanic ridge

  5. Current and Proposed Seismic Stations in Kenya

  6. PROPOSED GATUNGA SEISMIC STATION TOGETHER WITH CEA(CHINA EARTHQUAKE ADMINISTRATION) STN12 RMS=1.13×10-8M/S

  7. PROPOSED MARALAL SEISMIC STATION TOGETHER WITH CEA(CHINA EARTHQUAKE ADMINISTRATION) STN2 RMS=8.9×10-9M/S

  8. Kenya National Data Center • Established in 2002 • Activities and objective of the National Data Centre a) Strengthen a seismology and geophysics research and training base at the UoN b) Carrying out systematic earthquake studies and mitigation in this region of Eastern Africa which is highly vulnerable to medium and strong earthquake events (Richter scale magnitudes of 4.0 – 6.9) c) Act as a nerve centre for regular earthquake monitoring and reporting of seismic hazards through scientific publications, massmedia and seismic bulletins.

  9. Features of the Kenya National Data Center • KE-NDC is equipped with GCI equipment (VSAT, Server) Sun Workstation, PCs and NDC-in-a-Box running on linux • Currently, seismic data from 4 primary IMS stations (KMBO, BOSA, DBIC and TORD) received and archived at KE-NDC • Data from other IMS stations is available upon request NOTE: Visit https://www.ctbto.org/verification-regime/the-global-communications-infrastructure/ for more information on the GCI VSAT Network

  10. Live Wave Form Display at the Kenya National Data Center using Geotool Software

  11. What we do at the NDC • Real time recording and Storage of Data from the currently connected stations namely Lodwar, Kibwezi and Kilimambogo. • Collection of Data from 3 Stations which do not send realtime data (Magadi, Eldoret and Asumbi) every 3 months. • Regular analysis of local events. • Providing technical assistance to Staff and Students involved is Seismology related research and activities. • Monitoring, maintenance and servicing of currently active stations. • Provision of Seismic data to the Government of Kenya and Consultants whenever required.

  12. Latest local event in Embu County recorded and analysed using Seisan Software

  13. Latest Regional event in Tanzania Country, Bukoba Area with effects reaching Nyanza and Western Kenya.

  14. Challenges at the NDC • Difficulties using softwares in regards to data conversion because of different data types available. • Archiving of seismic data. • Under-staffing at KE-NDC, limited time for event analysis • Rampant power outages which affects KE-NDC Server. • Manual collection of data from un-connected stations.

  15. Expectations • Enhanced capacity building for KE-NDC staff. • Set-up of a modern data center with enough storage capacity and operating space • Creation of links to the non-linked stations across the country • Support in production of bulletins and reports of any seismic activities • Proper Archiving of old and current seismic data • KE-NDC will play an active role in contributing data and products for the verification regime as well as for civil and scientific applications.

  16. Thank You…..

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