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

FACTS ABOUT JAMAICA Location = 18 N, W ~400Km E of Grand Cayman and 150km S of SE Cuba. Spanish Colony: British Colony : Got independence from Britain in 1962 Area = 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.

LOCATION OF JAMAICA

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

MOST DAMAGING EARTHQUAKES IN JAMAICA DATEMAXIMUM INTENSITY PLACE AFFECTEDOBSERVED DAMAGE 1667VIIILandslide March 1,1668VIIPort RoyalHouses and Ships damage June 7, 1692XPort Royal, Kingston, Vere Plains, Also felt island-wide 2000 dead; buildings collapsed, liquefaction, subsidence, landslide and water ejected September 3, 1771VIIPort Royal, KingstonDamaged to structures, felt on boats in port. November 11, 1812 VIIIKingstonSeveral peopled killed; wall fell, buildings damaged April 10, 1824VIIKingston, Clarendon, St. Catherine Some houses fell, loud noise accompanied shock

DATEMAXIMUM INTENSITY PLACE AFFECTEDOBSERVED DAMAGE November 5, 1839VIIMontego Bay, St. James Government buildings declared unsafe due to damaged June 14, 1907IXKingston, Port Royal1000 dead, fire burnt city, most buildings collapsed, water main broke, landslides and slumps, localized tsnunami August 3, 1914VIIEastern JamaicaBuildings damaged July 15,1943VIISt. Elizabeth March 1, 1957VIIIMontego Bay, St. James and felt island- wide 4 dead, landslide and bridge damage, utility poles and lines damage January 13, 1993VIIKingston, felt island- wide 2 dead, few case of damage to buildings MOST DAMAGING EARTHQUAKES IN JAMAICA

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

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

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.

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 History of Earthquake monitoring and the JSN in Jamaica

June 20, 2010PW/EQU/UWI-Mona13 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.

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

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.

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

JSN (Z)(8) JSN (3C)(4) JSMN (8) GPS (36) SEISMIC MONITORING IN JAMAICA Morant/Middle Cay Pedro/NE Cay

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.

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

June 20, 2010 PAW/EQU/UWI-Mona 20 THE JAMAICA SEISMOGRAPH NETWORK TELEMETRY LINK

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.

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

ID CodeStation NameLattitude Longitude Elevation Site Condition BBJBamboo, St. Ann N W 766m, isolated pier on limestone bedrock BNJBonny Gate, St. Mary N W 485m, concrete slab on limestone bedrock CMJCastle Mountain, Portland N W 391m, concrete slab on limestone bedrock GWJGreenwich, St. Andrew N W 1170m,concrete slab on weathered soil HOJHope (Mona), St. Andrew N W 228m, Quaternary alluvium of unknown depth Jamaica Seismograph Network Stations

MBJMontego Bay, St. James N W 513m, Concrete slab on limestone bedrock MCJMunroe College, St. Elizabeth N W 661m, Isolated pier on limestone bedrock PCJPortland Cottage, Clarendon N W 198m, isolated pier on limestone bedrock RHJ (COJ) Red Hills, St. Andrew (Cooper’s Hill) N W 779m, no sensor STHStony Hill, St. Andrew N N 504m, isolated pier on limestonebedrock CVJ Pike (Coleyville), Manchester N m, concrete slab on limestone bedrock YHJYallahs Hill, St. Thomas N W 600m, isolated pier on limestone bedrock

StationOwner of Site SensorSite Condition Stony Hill (STH) UWI3 component L4-C Etna accelerograph (Broadband Garulp CMG-3ESPD and SAM) Pier Greenwich (GWJ) Private Owner Single component L4-CVault to be constructed Yallahs (YHJ)GovernmentSingle componentPier Castle Mountain (CMJ) GovernmentMark Product L4-CPier to be constructed Bonny Gate (BNJ) GovermnentMark Product L4-C (Garulp 3ESPD and SAM) Vault Bamboo (BBJ)GovernmentMark Product L4-C single component Pier Current State of Network

Portland Cottage (PCJ) Port Authority3 component Mark product L4-C Pier Munro CollegeSchool3 component L4-C Guralp CMG ESPD and SAM Pier Negril (NEJ)PrivateSingle component L4-CVault or pier to be constructed Montego Bay (MBJ) Aeronautical Communication Leased from Government 3 component Mark product L4-C Etna accelerograph Garulp 3ESPD and SAM Vault Pike (CRJ)Civil AviationSingle component L4-CVault to be constructed Current State of Network

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

Earthquake recorded near the center of the Island

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

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

Seismic Station at Greenwich (GWJ) Remote seismic stationStation powered by solar

CENTRAL RECORDING STATION

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

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)

GPS MONITORING

June 15, 2004 The Earthquake Unit, UWI - Mona, Kingston 7, Jamaica 36 GPS Monuments across Jamaica

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

GPS Monitoring Station Portable GPS Station Fixed GPS Station

USGS-GSN Station Mount Denham Jamaica (MTDJ) Equipment at stationConducting test at station

USGS-GSN MTDJ STATION

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

CTBTO National Data Center VSAT for Jamaica NDCNDC Equipment

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

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

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.

PAW-IRIS_July 2010 THE END