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Puerto Rico Strong Motion Program (PRSMP)

Puerto Rico Strong Motion Program (PRSMP). José Martínez-Cruzado John Clinton Georgia Cua. History. 1970’s : initial strong motion sensors located around islands 1987 : existing analogue infrastructure handed over to UPRM Civil Engineering. Aims.

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Puerto Rico Strong Motion Program (PRSMP)

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  1. Puerto Rico Strong Motion Program (PRSMP) José Martínez-Cruzado John Clinton Georgia Cua

  2. History 1970’s : initial strong motion sensors located around islands 1987 : existing analogue infrastructure handed over to UPRM Civil Engineering Aims • Record motions on-scale from strongest earthquakes • Provide timely information after an event (location, magnitude, [PRSN authoritative] shaking intensity patterns, raw records) to public, emergency management authorities, scientists, engineers • Record motions from wide range of locations : isolated hard rock sites, representative soil sites in towns, critical infrastructure (tall buildings, bridges, dams), boreholes • Conduct research with goal of enhancing seismic understanding and damage mitigation • Reduce fatalities and economic loss resulting from earthquakes in Puerto Rico region Current Infrastructure • 20 standalone triaxial free-field/basement accelerometers (18-bit Kinemetrics ETNA) • 47 triaxial free-field/basement accelerometers w/ dial-up communications to UPRM (18-bit Kinemetrics ETNA) • 7 standalone multichannel accelerometers on structures (19-bit Kinemetrics K-2) • 8 free-field triaxial free-field accelerometers with real-time communications (18-bit Kinemetrics ETNA) • 8 free-field joint stations with PRSN (24-bit Kinemetrics EpiSensors) • ANTELOPE software acquires data, detects/associates/locates events, archives data

  3. PRSMP Station Map

  4. Typical Stations: Hatillo Fire Station - Dialup ETNA Minillas Building - 15 channel standalone K2 UPR Aguadilla - Continuous ETNA La Plata Dam 12 channel standalone K2

  5. Why Strong Motion alongside Broadband? Broadband sensors saturate at 1cm/s:

  6. Broadband sensors saturate at 1cm/s: Why Strong Motion alongside Broadband? For M8.3 Tokachi-Oki : all BB within 500km saturate, some up to 1000km (and sensors located in region of backwards directivity) Similar size event in North of PR (assuming similar event parameters, wave attentuation) : saturates all BB sensors in Dominican Republic, PR, some in Haiti, Jamaica, Cuba - no magnitude from local networks!

  7. PRSMP Initiatives - 1. Shakemap

  8. PRSMP Initiatives - 2. Real-time structural monitoring

  9. Dominican Republic PRSMP Initiatives - 3. New Installations on nearby islands with PRSN Samana Punta Cana

  10. PRSMP Initiatives - 3. New Installations on nearby islands with PRSN British Virgin Islands

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