Speakers
Description
The Comprehensive Nuclear-Test-Ban (CTBT) International Monitoring System (IMS) network comprises two global seismic networks: a primary, based on 50 stations, and an auxiliary, based on 120 stations. Both networks undergo ageing and obsolescence, as the equipment is reaching more than 20 years of operation in the field and, in some cases, is no longer supported by equipment providers. Keeping the network operating efficiently and continuously meeting the minimum requirements specified in the draft IMS Operational Manual for seismic technology is of paramount importance to ensure uninterrupted, high level performance and adequate sustainment of the IMS network. This work presents three examples of major recapitalization activities performed both at primary and auxiliary seismic stations: the primary seismic array PS40, based on 20 elements, and requiring major actions on equipment and power, the relocation of the seismic 3-component station PS34 and the major structural and instrumentation upgrade of the auxiliary seismic array AS57.
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