# Presentation: 536304

## Universidad Autónoma de Santo DomingoFacultad de CienciasInstituto Sismológico Universitario

- The Past, Present, and Future of Seismology in the Dominican Republic
- Ing. Rafael Pujols
- rafaelpujols@hotmail.com

-         17th Caribbean Geological Conference

## Objectives

- Provide 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
- 		1948
- 		1984
- 		1996
- 		1998
- 		2002
- 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

- Santiago

- San Fco.

- Nagua

- Repeaer
- Cotui

- Repeater
- Hato Mayor

- Central Station
- Sto. Dgo.

- Juan Dolio

- Romana

- 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

- Samana

- Sanchez

- Monte Plata

- Cabrera

- Villa Altagracia

- Cotui

- San Fco.

- Villa Rivas

- Telemetry Field Station

- Central Recording Station

- Data Aquisition System

## Accelerograph Network 1998

- Puerto Plata

- Santiago

- Samana

- 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 ISU

**Improvements 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.