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Cascadia EEW in PNSN

Cascadia EEW in PNSN. A Snapshot. Structure & Direction. UW participation in GBMF “ Moore ” grant CIT, UCB, UW, (CWU) and USGS Objective: deliver prototype EEW to sophisticated customers west-coast wide.

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Cascadia EEW in PNSN

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  1. Cascadia EEW in PNSN • A Snapshot

  2. Structure & Direction • UW participation in GBMF “Moore” grant • CIT, UCB, UW, (CWU) and USGS • Objective: deliver prototype EEW to sophisticated customers west-coast wide. • Overall goal: obtain long-lived general EEW services in Western US. (Involves “politics”).

  3. UW - The Heart of Cascadia • Challenges: behind Calif., several jurisdictions, weak instrumentation. • Focus: recognition of a large Cascadia megathrust rupture in progress (or not). • First step towards more complete system • Ultimate system must be delineated soon.

  4. Specific target • Recognize M7.5+ events with 10-20s • Evaluate odds of various scenarios of bigger earthquakes are developing • Issues • Must eliminate false alarms • One-sided coverage • Gutenburg-Richter distribution? • Identification of non-subduction events • Identification of finite-faulting very useful

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