FACULTY OF SCIENCE & TECHNOLOGY
366
NETWORK OPERATIONS
Central Recording Station (CRS): The CRS comprises of a combination of data acquisition and processing equipment in an integrated and dedicated ICT infrastructure. Internet connectivity issues along with several power cuts and electrical issues resulted in data loss and down time for the period. There were also several instances where the network went offline temporarily due to IT equipment or server issues, these incidents were reported and logged. The solar bank was also replaced as a result of its age and several non-functioning batteries. Jamaica Seismograph Network (JSN): The Jamaica Seismograph Network (JSN) now includes 14 seismic stations with installations across the island comprising of 12 short period analogue sensors and 14 broadband sensors (Figure 3). At the end of July 2023, 12 broadband stations were in operation, with 9 of the stations having an operational uptime of over 85% despite some of the stations not streaming in real time. A new station was installed at Paradise in Montego Bay, St. James in December 2022 and testing was completed over 6 months. The short period network continue to remain offline as critical repairs and work to the broadband network was prioritized. Throughout the period, field visits to the stations were conducted for maintenance, data collection, research and major repair works with significant improvements to various links. Some of the issues included the long wait period for payments to suppliers, vandal- ism and theft, lightning, power issues, pests/vermin and the site accessibility due to weather conditions. A significant number of trips were conducted as a result of power issues at the sites, damaged communication links and defective equipment. Communication equipment was stolen from the Shafton site and this was replaced after consultation with the host and several visits. The Unit also removed its equip- ment from the Shotover site in Portland due to the new arrangements by the owner. Jamaica Strong Motion Accelerograph Network (JSMAN): The Jamaica Strong Motion Accelerograph Network include a combination of building and free field installations. At the end of the reporting period, there were 40 accelerographs installed island wide, with 34 sites operational and 6 requiring critical repairs. Work was completed with upgrading the power at a few of the sites. Some of the issues encountered for the period included the long wait period for payments to suppliers from UWI, vandalism and theft (stolen batteries, solar panels, cables and radios), poor weather conditions, defective equipment and incomplete links due to a lack of equipment.
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