CGS initiatives in seismology in eastern and southern African countries 2 nd AfricaArray Workshop 26-27 February 2005 Palmanova, Italy Gerhard Graham.

Slides:



Advertisements
Similar presentations
DS-01 Disaster Risk Reduction and Early Warning Definition
Advertisements

International Telecommunication Union ITU Initiatives within Connect Africa presented by Marcelino Tayob ITU/BDT FTRA 2009 Lusaka, Zambia 20 May 2008.
TURKEY AWOS TRAINING 1.0 / ALANYA 2005 TRAINING COURSE ON AUTOMATED WEATHER OBSERVING SYSTEMS ( AWOS ) MODULE C.2: COMMUNICATION SONER KARATAŞ ELECTRONIC.
Introduction to Computers Lecture By K. Ezirim. What is a Computer? An electronic device –Desktops, Notebooks, Mobile Devices, Calculators etc. Require.
COMPREHENSIVE APPROACH TO INFORMATION SECURITY IN ADVANCED COMPANIES.
Networks & Components Discuss the components required for successful communications Explain the purpose of communications software Identify various sending.
Recent Seismicity in the Mozambique Region by T T Molea and L Akromah (Council for Geoscience: Seismology Unit)‏ Seisan workshop October 2008 Norway.
Society-relevant Arrays for Developing Countries: Opportunities and Challenges in South Africa Andy Nyblade Penn State University Workshop on Arrays in.
Tsunamis Detection The Mission  Tsunamis Detection can help to minimize loss of life and property from future tsunamis. Mission Introduction Mechanism.
Existing Infrastructure for International Exchange of Seismic Data Raymond J. Willemann GEM Technology, Washington, D.C. IASPEI:Includes commissions for.
NIGERIAN NATIONAL NETWORK OF SEISMIC STATIONS CENTRE FOR GEODESY AND GEODYNAMICS NATIONAL SPACE RESEARCH AND DEVELOPMENT AGENCY FEDERAL MINISTRY OF SCIENCE.
 A system consisting of a number of remote terminal units (or RTUs) collecting field data connected back to a master station via a communications system.
1 Disaster Recovery Planning & Cross-Border Backup of Data among AMEDA Members Vipin Mahabirsingh Managing Director, CDS Mauritius For Workgroup on Cross-Border.
SHORT WAVE SERVICES: The Gateway to Africa August 2012.
Smart Grid Research Consortium Conference Communications: Technologies Systems Future Trends Dr Rick Russell.
August 13-19, 2010Data Management Workshop Foz do Iguassu- Brazil Seismic Quality Assurance Rick Benson IRIS DMC Rick Benson IRIS DMC.
SCADA and Telemetry Presented By:.
Severe Weather Forecasting Demonstration project for southern African countries Portfolio committee, 21 August 2007.
Idaho National Engineering and Environmental Laboratory Upgrade of INEEL Seismic Stations and Strong Motion Accelerographs to Digital Field Acquisition.
David W. Simpson & Ray Willemann The IRIS Consortium Facilitating Free and Open Exchange of Seismological Data IRIS is a consortium of 105 US universities.
Networks and Hackers Copyright © Texas Education Agency, All rights reserved. 1.
Fundamental Principles of Computer Systems Unit B, Objective 3.01 & 3.02.
What Is a Computer? How is a computer defined?
Towards a Tsunami Warning and Mitigation System in the Indian Ocean IOC of UNESCO.
IRIS workshop on “Managing Waveform Data and Related Metadata from Seismic Networks” Hotel Windsor Suites, Bangkok, Thailand 08-13, January, 2012 Ashvin.
A U.S. Sponsored Observing System of the Global Earth Observing System of Systems  Focus on the Network –Data Management –Products Global Seismographic.
Cuban Seismic Network National Centre for Seismological Research (2010) Ing. Eduardo R. Diez Zaldívar. Centro Nacional de Investigaciones Sismológicas.
SEISLOG Linux presented at the WORKSHOP High Quality Seismic Stations and Networks for Small Budgets Volcan, Panama March, 2004 by Terje Utheim,
Definitions What is a network? A series of interconnected computers, linked together either via cabling or wirelessly. Often linked via a central server.
8-13 January 2012, Bangkok, Thailand Institute of Seismology, National Academy of Sciences, Kyrgyz Republic.
Portable Data Collection Center (PDCC) and the Nominal Response Library (NRL) Tim Ahern.
BULGARIAN SEISMOLOGICAL NETWORK D. Solakov 1, L. Dimitrova 1, S. Nikolova 1, St. Stoyanov 1, S. Simeonova 1, L. Zimakov 2, L. Khaikin 3 1 National Institute.
Building Science Capacity using Seismology Michelle Grobbelaar.
Altay-Sayan Regional Seismic Network Altai-Sayan Branch of Geophysical Survey Siberian Branch of the RAS.
1 Kenneth Osborne, 9/14/07 Inter Group communications at the Advanced Light Source. Overview of the different methods of communication between different.
Developing monitoring capability of a volcano observatory Esline Garaebiti, Sylvain Todman Vanuatu Meteorological and Geohazards Department Gill Jolly,
ESARSWG: Background and Current status Atalay Ayele AfricaArray 2 nd Workshop Palmanova, Italy February 26-27, 2005.
MICROSEISMICITY MONITORING IN ENI. 2 Seisan Workshop Microseismicity monitoring in ENI Environmental Monitoring: local authorities often requires monitoring.
Observation Center of seismic and volcanic study YEMEN REPUBLIC Ministry of Oil and Minerals بسم الله الرحمن الرحيم Naji A. S. Husain Alhetar Chief of.
Managing Waveform Data and Related Metadata for Seismic Networks OBSERVATIONAL NETWORK OF THE KAZAKHSTAN NATIONAL NUCLEAR CENTER (KAZNET) 8-13 January.
By Tim Ahern, Program Manager IRIS DMS A “Short” Introduction to the IRIS Data Management Center Data Holdings, Data Organization, and Data Access.
IRIS-PMG Station, its Significance to Papua New Guinea Mathew Moihoi Geophysical Observatory Geological Survey of Papua New Guinea Managing Waveform Data.
The existing and upgrading national seismological network in vietnam Le Tu Son Le Tu Son Institute of Geophysics, VAST Vietnam.
Seismic Hazard in the Eastern & Southern Alps: State of the Art and New Challenges S. Parolai / M. Pilz (M. Weber) GFZ-German Research Centre for Geosciences.
University of Bergen public domain software: Systems for seismic data-acquisition and processing T.Utheim 1, J.Havskov 1, Ø.Natvik 1, J.Å.Ojeda 1 and L.Ottemoeller.
Seismic Network in PNG Port Moresby Geophysical Observatory (PMGO)
J. Havskov and L. Ottem öller Key to sustainable networks: Manpower and skills more then equipment.
© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 13 1 Chapter 13: Advanced Laptops and Portable Devices IT Essentials: PC.
ESARSWG Seismological Networks Blessing Shumba Cairo, Egypt.
3.2 Software Fundamentals. A protocol is a formal description of digital message formats and the rules for exchanging those messages in or between computing.
Updates on AfSC and Seismological Activities in Africa Atalay Ayele & Michelle Grobbelaar.
An overview of Uganda Seismological Network and current activities
Introduction to Computers in General By: Dr. Emelda Ntinglet-Davis Oracle DBA Class.
Seismicity of Norway Seismo group, Department of Earth Science, University of Bergen, Norway Location of stations in the Norwegian National Seismic.
RADIO FREQUENCY SPECTRUM POLICY NOVEMBER Making South Africa a Global Leader in Harnessing ICTs for Socio-economic Development 2 WHAT IS SPECTRUM?
Repackaging of Health Information (module 6.3). Objectives Review the concept of repacking information for the health sector Note key variables for successful.
SOUTHERN AFRICA Sub Region IMPLIMENTATION ROAD MAP A STRAWMAN FOR DISCUSSION Prepared for and on behalf of the southern African EO Community Terry Newby.
DakNet (WIRELESS TECHNOLOGY). What do you do when you want to provide Digital communication services Voice mail Digital documents Isolated Villages.
Thurs Nov 12, 12:45 Nov 8-17, 2009Data Management Workshop Cairo, Egypt.
Country Report for Malawi to the UNDP CIRDA Country Program Managers Workshop 15 th to 17 th March, 2015 Livingstone, Zambia Strengthening National Climate.
Regulatory Measures and Crises Management Dr. M. Yaseen Pakistan Telecom Authority.
REPORT ON MALAWI SEISMIC NETWORK
8 - 9 MAY, 2014, PRETORIA, SOUTH AFRICA
MR. BruCE MUTEGI SEISMOLOGIST Mr. Daniel Mutua ICT Technologist
EISA ACE Southern Africa Regional Resource Centre
KWANGWARI MARIMIRA by METEOROLOGICAL SERVICES DEPARTMENT
Lecture # 1 M.Sc / BS(CS)/ BS(I.T) DPT.
REF TEK Technology Overview
Status and Plan of Regional WIGOS Center (West Asia) in
NATIONAL REPORT INDONESIA TSUNAMI EARLY WARNING SYSTEM (INATEWS)
Presentation transcript:

CGS initiatives in seismology in eastern and southern African countries 2 nd AfricaArray Workshop February 2005 Palmanova, Italy Gerhard Graham

Framework of Presentation Brief description of networks CGS is involved in: –Malawi, Mozambique, Rwanda, –Swaziland and Lesotho –Namibia (in progress) Involvement in AfricaArray Components of a CGS seismic station Data formats and management Lab facilities and technical support for the network operations Communication Support to Indian Ocean Tsunami Early Warning System Conclusions

Seismicity of Sub-Saharan Africa

CGS involvement in Seismology in Africa ESAF Working Group on Seismology: - Ethiopia (1995) - Malawi (1996) – Zimbabwe (1996) SADC: - CGS has been producing SADC regional bulletins since Sixth Eastern & Southern Africa Regional Seismological Workshop on Seismic Hazard Analysis held in Bulawayo, Zimbabwe in Mozambique co-funding: - Training of seismic instrumentation technicians, seismic analysts Course on Seismology and Seismic Hazard in collaboration with GFZ in 2003 Regional Workshops in partnership with CTBTO 1996, 1997, 2004

Networks Outside South Africa

CGS commitment to AfricaArray Pledged 11 stations from the SANSN as AfricaArray stations Data from the AfricaArray stations operated by the CGS will flow to the CGS Seismology Unit in Pretoria, where the data will be converted into miniSEED File header will be created with the Portable Data Collection Center (PDCC) software from IRIS Provision of technical training Post-graduate training of own staff

CGS involvement in AfricaArray CGS can assist in: –the installation, –the training of local operators and –the maintenance of the seismic stations CGS will be able to provide lab facilities and technical support for the network operations, and a base for a technical coordinator

SANSN Incorporating: Broadband upgrade Stations committed to the AfricaArray

Components of seismic station

EARS seismograph development EARS Alpha (1999) SPECIFICATIONS Record 1-64 channels with 2-24 bit resolution Compatible with many off the shelf digitisers Continuous data recording with adjustable ring buffers User selectable digital filtering on preferred channels Applied triggering algorithm single or multiple channels with sensitivity adjustment Operates under most popular operating systems Logfile recording for monitoring system operation and performance EARS Delta (2001) EARS Omega (2002) EARS Sigma (2002) EARS Delta + (2003)

Data Formats Seisan: –Nordic format either binary or ASCII, internal to the SEISAN program. –Nordic to miniSEED ISS: –binary data, wave form and header (description) are kept in separate files. Converted to Nordic format for analysis. Seed: –Internationally known format. Can be converted to Nordic format using SUN Solaris software. Nanometrics: –X and Y files extracted from ringbuffers are converted to Nordic format. ISC: –FFB files, data are extracted and converted to Nordic format for inclusion into SEISAN data banks.

Data Management Download from remote stations via cellular / land modem Digital data (SEISAN) Waveforms from remote stations are analysed, compared and combined for each event Involved location procedure to identify each epicentre Stored in databank Published bulletin of located events Source and spectral parameters available to public, clients, insurance enquiries and seismic hazard assessments

Laboratory Facilities Human More than 40 years experience in seismic instrumentation –4 full time technicians –1 part-time technician Extensive knowledge in designing and construction of seismograph systems. Extensive experience in site survey, construction, installation and maintenance of seismograph stations, in more than 6 southern African countries. Experience with radio telemetry, modem and satellite communications. Knowledge of different seismograph systems, such as the EARS, ISS, Nanometric, Quanterra and IRIS systems. Instrumentation Testing equipment such as digital oscilloscopes, multi-meters, communications testers, frequency counters, frequency generators, battery testers and transmission line testers. Space to set-up, calibrate and test more than 10 seismograph systems concurrently. Seismic sensors such as: short-period –Mark Products L4-C and L4-3D, –Geotech S13, –Sensor Netherland SM6, broadband –Guralp CMG-40T –Geotech KS2000 –Streckeisen STS2

Communication Dependent on location and topography of remote sites Cellular Modems –Advantages: telephonic network isolation limits effect of electrostatic discharges (lightning) –Disadvantages: expensive call rates, limited band width (9600 baud) Landline Modems –Advantages: improved data transmission speed –Disadvantages: equipment exposed to lightning damage Radio Telemetry –Advantages: utilised in small networks (Lesotho, Swaziland, client) Internet –Disadvantage: not available at all remote sites, satellite communication and licensing fees expensive WLAN –Advantage: communication with TCP/IP link Storage Media –Advantage: communication in rural areas not available, data is stored on external removable storage device such as ZIP or Flash disk, operator performs data retrieval regularly and couriers data to central site (Malawi and Mozambique)

Communication in Africa Investigations underway into Internet Very Small Aperture Terminal (IVSAT) Makes use of satellite communication

Supporting a tsunami early warning system

Conclusions Not the first attempt to increase the number of seismic stations in eastern and southern Africa, and link these to a regional data center For the first time it is seen as a single unit The SANSN and the facilities at the CGS and other parts of eastern and southern Africa could form the initial backbone of the proposed AfricaArray The long term maintenance and support of the stations and facilities of the AfricaArray will require strong international partnerships and local commitment Data communication is a weakness that should be addressed in more detail as the plans for the AfricaArray develop The CGS is in full support of the AfricaArray and will participate in the development of the facilities of this network, data processing, analyses and interpretation and training programmes The potential role of an AfricaArray network to provide primary information to a Disaster Management Centre for tsunami warnings in the Indian Ocean should be explored

Thank you!