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JAMAICA SEISMOGRAPH NETWORK IRIS Metadata Workshop

JAMAICA SEISMOGRAPH NETWORK IRIS Metadata Workshop. Managing Waveform Data and Related Metadata for Seismic Networks Foz do Iguacu, Brazil August 13 -19, 2010 Presenter: Paul Williams Earthquake Unit Jamaica. FACTS ABOUT JAMAICA.

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JAMAICA SEISMOGRAPH NETWORK IRIS Metadata Workshop

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  1. JAMAICA SEISMOGRAPH NETWORKIRIS Metadata Workshop Managing Waveform Data and Related Metadata for Seismic Networks Foz do Iguacu, Brazil August 13 -19, 2010 Presenter: Paul Williams Earthquake Unit Jamaica

  2. FACTS ABOUT JAMAICA • Location = 18 N, 76-78 W ~400Km E of Grand Cayman and 150km S of SE Cuba. • Spanish Colony: 1494 -1655 • British Colony : 1655-1962 • Got independence from Britain in 1962 • Area = 11424 km sq. • Length of island east to west 243 km Width of maximum distance N- S 80 km • Mountainous with highest mountain of 2000m in the east. • Population of 2.8 million. • Experience moderate to high seismicity.

  3. LOCATION OF JAMAICA

  4. HISTORY OF EARTHQUAKES IN JAMAICAHISTORY OF EARTHQUAKES IN JAMAICA Eastern Jamaica • 1692 (X) • 1771 (VII) • 1907 (IX) • 1914 (VII) • 1993 (VII) Western Jamaica • 1839 (VII) • 1943 (VII) • 1957 (VIII)

  5. MOST DAMAGING EARTHQUAKES IN JAMAICA

  6. MOST DAMAGING EARTHQUAKES IN JAMAICA

  7. 1692 (June 7) Port Royal M? 1907 (Jan 14) Kingston Ms 6.5 PAW-IRIS_July 2010

  8. MOST ACTIVE BLOCK MARCH 2009 – APRIL 2010 JSN Local sub-region blocks Blue Mountain being the most active block

  9. History of Earthquake monitoring and the JSN in Jamaica The first modern seismograph in Jamaica was installed in the early 1960s at the Geological Survey Division. In 1963 the station was moved to the Mona campus of the University of the West Indies from where the growth of the Jamaica Seismograph Network began. In April 1990 digital recording and data processing were introduced at the Central Recording Station (CRS) using the Soufriere software of Beckles and Shepherd (1984). The system required two PC-Ats, 12-bit 16-channel digitizer and a GOES satellite clock.

  10. History of Earthquake monitoring and the JSN in Jamaica • In 1997 the Earthquake Unit started using a software called PC-Seismic Data Acquisition (PC-SDA)(developed by Avirac and Shapira) and PC-Seismic Data Processing (PC-SDP) (Malisky and Shapira). PC-SDA uses a 16 bit digitizer with Trimble GPS for timing. • In 2006 the EQU started using seislog and seisan with a 16 bit SARA digitizer. • We should start using Earthworm before the end of 2010.

  11. MISSION STATEMENT Through operating the Jamaica Seismograph Network and affiliating with other Caribbean and Regional Networks the Earthquake Unit seeks to understand earthquake processes in and around Jamaica and advise the society about earthquake hazard thereby encouraging community awareness and the application of mitigative strategies to development. PW/EQU/UWI-Mona

  12. STAFF AT THE EARTHQUAKE UNIT • 6 full-time staff: • Research Fellow/Geophysicists • Network Engineer/Manager • Seismic Analyst • Information/Electronics Technologist • Scientific Officer – Education & Information • Administrative Secretary • Plus • One Postgraduate student and two part-time staff

  13. The Earthquake Unit • The Unit operates the Jamaica Seismograph Network, Jamaica Strong Motion Network and the GPS Monitoring Network. • Archives and records all earthquake related data for Jamaica. • Conducts relative research on Jamaica seismicity and tectonics. • Performs national and site specific seismic hazard assessment for national and private entities.

  14. Earthquake Unit contd. • Informs the public about felt earthquake • Operates the National Data Centre (NDC) for Jamaica in keeping with the CTBTO • Hosts tours by schools and other community groups at the Central Recording Station

  15. SEISMIC MONITORING IN JAMAICA 1997-2010 JSN (Z)(8) JSN (3C)(4) JSMN (8) GPS (36) Morant/Middle Cay Pedro/NECay

  16. JAMAICA SEISMOGRAPH NETWORK • The Jamaica Seismic Network consists of 12 analog short period stations. • There are four 3-component and 8 single vertical component station • The JSN is a telemetry network using UHF and VHF radios. • The station are mostly powered by solar power.

  17. JAMAICA TELEMETRY SEISMIC NETWORK REMOTE STATION CENTRAL RECORDING STATION RADIO LINKS RANGE FROM 15KM TO 60KM REPEATER UHF VHF REMOTE STATION UHF LINK

  18. THE JAMAICA SEISMOGRAPH NETWORK TELEMETRY LINK PAW/EQU/UWI-Mona

  19. Telemetry Link • The stations are located across the island and data from these stations is transmitted to the CRS using UHF and VHF radios. • The central recording station (CRS) is located at the University of the West Indies, Mona Campus in Kingston (HOJ on the Map). • Short links are used for radio links because of: • the terrain the links are repeated several times before reaching the CRS. • Using smaller RF power to minimize the power requirement so that solar power can be used.

  20. Jamaica Telemetry Seismic Network Antenna L4C SEISMOMETER AMPLIFIER FILTER & VCO UHF TRANSMITTER GPS ANTENNA SEISLOG & SEISAN RECEIVER 16 BIT SARA DIGITIZER DISCRIMINATOR 16 BIT NATIONAL INSTRUMENTS & MULTIPLEXER ANALOG DRUM RECORDER WINDOWS PC(SDA) & PC(SDP)

  21. Jamaica Seismograph Network Stations

  22. Current State of Network

  23. Current State of Network

  24. Seismometers in use at the JSN Mark Product L-4C Guralp CMG 40T Guralp CMG-6TD

  25. Earthquake recorded near the center of the Island

  26. REMOTE SEISMIC STATION AT NEGRIL (NEJ) and YALLAHS (YHJ)

  27. Three Component Station at Munro College (MCJ) Earthquake Unit, UWI

  28. Seismic Station at Greenwich (GWJ) Remote seismic station Station powered by solar

  29. CENTRAL RECORDING STATION

  30. Equipment at Central Recording Station Solar panels at the CRS Charge Controller and Inverter at CRS

  31. SOFTWARE USED FOR DATA ACQUISITION AND ANALYSIS For data acquisition • Seislog • PC-Seismic Data Acquisition (PC-SDA) For processing or data analysis • Seisan • PC-Seismic Data Processing (PC-SDP)

  32. GPS MONITORING

  33. GPS Monuments across Jamaica The Earthquake Unit, UWI - Mona, Kingston 7, Jamaica

  34. GPS MONITORING IN JAMAICA GPS Monitoring on Morant Cays offshore GPS installed in Geodetic Monument

  35. GPS Monitoring Station Portable GPS Station Fixed GPS Station

  36. USGS-GSN Station Mount Denham Jamaica (MTDJ) Equipment at station Conducting test at station

  37. USGS-GSN MTDJ STATION

  38. Comprehensive (Nuclear) Test Ban Treaty Organisation(CTBTO) Jamaica’s National Data Centre (NDC) Earthquake Unit, UWI

  39. CTBTO National Data Center VSAT for Jamaica NDC NDC Equipment

  40. Accelerograph Station ETNA installed on a pier in a free field installation K2 installed

  41. SUMMARY • The Jamaica Seismograph consist of 12 short period seismograph station – four 3-component station and eight single-component station. • The Jamaica Strong Motion Network consist of 8 accelerograph (6 Etnas, 1 CMG 5TD and one K2). There are three other etnas owned by the other institutions that are operated by the Earthquake Unit. And 2 REFTEK accelerograph will be installed at the NMIA airport

  42. SUMMARY CONTINUE • GPS network has 36 monitoring points three of which have a fixed GPS installation • To improve our network we hope to upgrade our network to digital. • Install 6 broadband seismometers • Have automatic solution of earthquakes. • Have real time access to accelerograph to produce shake map.

  43. THE END PAW-IRIS_July 2010

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