Wardens and Facility Managers
Instant easily understood information to the decision-maker in your business.Ground shaking is instantly compared to each building’s design or assessed limits. Supports immediate, building specific actions and decisions.
Sentinel condition WHITE, AMBER or RED initiate Sentinel instant messages via App, SMS, and Email. Customise recommended action messages to suit your organisation earthquake response plan (ERP) guiding the next step.
Owners and Structural Engineers
Detailed event information for every building, sent directly to the building owner and structural engineer.Instant complete ground response spectra, relative to building Serviceability Limit State and Ultimate Limit State per NZS1170.5. Horizontal spectra aligned to building transverse and longitudinal axes. Vertical response spectrum available. Prescribe alerts to known building natural frequency.
MMI, PGA, duration and other damage indicators support post-quake damage assessment, repair and re-occupancy decisions.
Raw acceleration data available for detailed post event analysis.
Sentinel instant detailed messages via SMS, Email and App.
Inspectors and Civil Defence
Area wide summary information for the emergency management professional.Choice of damage indicators, including ground shaking relative to NZ Building code, MMI, PGA, PGV, PGD and duration.
Ultra-dense spatial resolution – true measured variability across 200 m or less.
Supports triage of area zones and/or buildings, and prioritisation of initial response.
Suitable for campus, city or regional response; reduced red-zoning, better business continuity and improved economic resilience.
Sentinel regional status dashboard. Available as map view, or as data layer to transfer to external systems via secure API.
Your building Sentinel
How does Sentinel work?
Sentinel directly compares ground shaking against the NZ Building Code design demand of any individual structure – big or small, new or old, on any ground condition and of any importance level. We do this by generating, in real time, a ground response spectrum for every individual building covered by our service.
Our approach relates the shaking acceleration (its intensity) and its frequency (how rapid the shaking is), to how the structure is expected to behave. Sentinel’s Ground Response Spectrum is easily related to building design strength in ways other measurements cannot. This provides additional insight to the potential impacts of the shaking than can be achieved using measures such as Mercalli Scale, or peak ground acceleration (PGA) alone.
Based on the expected size of large earthquakes, the NZ Building Code defines limit state curves of shaking intensity vs. frequency. The curves are scaled based on soil type, building importance level and percentage of code.
Shaking beyond the Ultimate Limit State (ULS) means the building has exceeded its tolerance, with possible structural damage. Shaking below the Serviceability Limit State (SLS) means the building should remain fully serviceable.
For more information on how Sentinel works, click here.
What do I get with Sentinel?
We’ve made Sentinel accessible to the public for free on our Latest Earthquake page. This page shows descriptive intensity and provides an area map for context to ensure that the information is easy to understand for everyone. This page provides detailed area-wide shaking information for resource prioritisation. Especially useful for emergency response managers and coordinators.
Subscribers to Sentinel including building owners or portfolio managers gain access to additional pages with relevant and more detailed information about specific shaking at their buildings via our App and alerts. We provide the non-technical “traffic light” status of your specific building and shaking information, relative to each building's tolerances.
Unique services
Using a cloud-based subscription model, combined with our super-dense sensor network EQRNet, we deliver a unique, proprietary batch of services.
Response
Specifically designed to improve city-wide future response and resilience.
Services & Solutions
Sentinel is a subscription service model based on years' of hard-won experience, delivering maximum benefits.