Universidad Autónoma de Santo Domingo Facultad de Ciencias Instituto Sismológico Universitario
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Transcript of Universidad Autónoma de Santo Domingo Facultad de Ciencias Instituto Sismológico Universitario
Universidad Autónoma de Santo DomingoFacultad de Ciencias
Instituto Sismológico Universitario
The Past, Present, and Future of Seismology in the Dominican Republic
Ing. Rafael [email protected]
17th Caribbean Geological Conference
ObjectivesProvide an overview of the national seismic network of the Dominican Republic
Discuss its history and evolution
Describe current instrumentation
Outline ongoing collaborations
Discuss our plans for the future
Outline
• Founding of the Instituto Sismológico Universitario (ISU)• Descriptions of seismic stations installed in
19481984199619982002
• Collaboration with institutions in the Dominican Republic• International collaborations
The Founding of ISU• ISU was founded on the 26th
of February 1948
• It was created following a magnitude 8.1 earthquake that occurred on August 4, 1946
• ISU’s first director was Father Joseph Lynch
• Two three-component stations were installed in 1948: one short-period and one long-period instrument
• Seismograph installed in 1948 Short-period Sprengnether seismograph, 1948
Short-period seismogram, 1970 Long-period Sprengnether seismograph
Seismic Stations Installed in 1984
• The map (right) shows the 1984 stations
• The 1984 stations were installed with the support of the Lamont-Doherty Geological Observatory of Columbia University
• Teledyne Geotech Model S13 sensors were used in this network (left)
• These data formed the basis of Dr. William McCann’s PhD research at Lamont
SantiagoSan Fco. Nagua
RepeaerCotui
RepeaterHato Mayor
Central StationSto. Dgo.
Juan DolioRomana
Sabana Gde. De Boya
Seismic Stations Installed in 1996
Three short-period, vertical-component, telemetered stations were installed. Each station consisted of one:
• Kinemetrics SS1 Ranger sensor
• Kinemetrics TH-11 enclosure
• Monitron analog radio
• Teledyne Geotech analog helicorder
ISU Seismic Network 1996
Bani SDD
Hato
ISU Network 1998
Map showing the locations of stations in the San Francisco network
Moca
Bonao
SamanaSanchez
Monte Plata
Cabrera
Villa Altagracia
Cotui
San Fco.
Villa Rivas
Telemetry Field Station
Central Recording Station Data Aquisition System
Accelerograph Network 1998
Puerto Plata
SantiagoSamana
Santo Domingo
San Juan
• Digitizer: Kinemetrics Altus K2• Sensor: Kinemetrics FBA 23• Triggered recording• 6MB PCMCIA card• Power from the electrical grid, with 12-volt, 7 amp-hour battery backup
ISU Network 2002• Six short-period, vertical-component stations• Geotech S13J sensors• Viseis 64-channel digitizer at ISU.• Software DSPA64 and Smartquake.• Monitron UHF NBFM analog radios.• Broadband, three-component KS2000.• Geotech DL-24 digitizer.
Collaborations with Institutions in the Dominican Republic
•CNE (National Emergency Management Commission)
•Defensa Civil (Civil Defense Authority)
•SEOPC (Ministry of Public Works and Transportation)
•CDEEE (Electricity Production and Distribution Cooperative)
•DGM (National Directorate of Mining and Minerals)
•CODIA (a professional society of engineers, architects, and surveyers)
•Private businesses•Universities
International Collaborations
Puerto Rico Seismic Network
Universidad Complutense Madrid
The National University of Mexico (UNAM)
The University of Texas at Austin
…and others
The Puerto Rico Seismic Network
Earthworm Data Aquisition Display Realtime Internet Seismograms
http://midas.uprm.edu/waveforms/welcome.html
Project GEOPRICO-DO 2005
The Future of ISUImprovements to Infrastructure
• Rehabilitate the stations that are currently not working
• Replace stations that were vandalized and stolen
• Collaborate with the PRSN to install and maintain broadband stations in Punta Cana and Samaná, in the eastern Dominican Republic.
• Collaborate with the USGS to install and maintain a broadband station near the center of the island of Hispaniola.
• Install three broadband stations in the Dominican Republic as part of the ISU Seismic Network: One in the north and two in the south.
• Convert the vertical-component, short-period stations at Hato Mayor and Montecristi to three components.
• Install a new three-component, short-period station in Pedernales.
The Future of ISU
Improvements to Operations
• Train additional personnel to maintain the network and its stations.
• Seek support from an international agency to obtain software training for seismic analysts at ISU.
• Improve our data analysis system
• Make ISU’s waveform data available to the public via the internet
• Improve ISU’s quality control procedures to ensure that the data are of consistently high quality.
Other improvements
• Send students to study seismology outside the Dominican Republic, then return.
• Construct a new building to house ISU.
Muchas Gracias.