Leading edge monitoring and data analysis solutions to manage risk

Engineering Seismology

We provide a suite of integrated analysis and monitoring tools to assist in the evaluation and management of seismic risk for critical infrastructure and structural integrity. With our in-depth seismic hazard assessment services you can make informed decisions about seismic risk to help ensure your assets are protected and your stakeholders are informed.  

 

The three tiers of Engineering Seismology Services are optimized as an end-to-end service solution, leveraging Nanometrics vertical integration of instrument design to seismic data products and everything in between to gain the most complete understanding of seismic hazard.  Each of the services can also be applied individually. 

Tier 1. Research Grade Seismic Catalog Development for Seismic Hazard and Risk Evaluation

Using Nanometrics industry leading seismic instrumentation, we develop, deploy and maintain a network of instruments optimized to capture a complete and accurate data set. With the resulting data catalog, Nanometrics can then apply advanced in-house development machine learning-based algorithms to turn raw data sets into derived data which can be used to accurately quantify seismic hazard and evaluate risk. 

 

The quality and richness of the source, seismic data, determines the accuracy of all subsequent hazard analysis and is critical to developing accurate predictive models. While it is possible to work with public data sources, a Nanometrics turnkey monitoring solutions will generate a superior data set which will yield more accurate and reliable seismic hazard analysis. 

 

Source Characterization
Source characterization is one of the key inputs required for ground motion prediction and hazard assessment. 

Tier 2. Ground Motion Prediction Equations (GMPEs) Improvement 

Site response characterizationGMPEs are mathematical models that quantify ground motion amplitude as a function of key seismological parameters (magnitude, stress drop, mechanism, distance, VS30, kappa). Ground motion predictions are required to develop shake maps and hazard assessments.  

 

Site Response Characterization
Near-surface site characteristics play an important role in the generation of ground motion amplitudes. Site response characterization provides an estimate of the site effects at either a specific location or across a region of interest. 

Tier 3. Reliable Seismic Hazard Analysis

Shake Maps for Scenario, Induced and Naturally Occuring Seismic Events


Seismic Hazard Assesment

 

Shake maps represent the geographical distribution of ground motions produced by an earthquake. They are complementary to the magnitude and location of an event, providing an enhanced understanding of the impact of seismic events. 

 

By combining ShakeMaps with structural parameters Nanometrics can also provide rapid assessment of damage to critical infrastructure without the need for instrumentation in every structure; alerts are then issued if a building is exposed to ground motion that exceeds the structural limits.

 

 

Probabilistic Seismic Hazard Analysis (PSHA)

Seismic hazard assessment quantifies the probability of ground motion exceeding a defined level within a given time frame. Utilizing all of the Seismic Service building blocks: source characterization, ground motion prediction and site response characterization, any uncertainties in location, size and ground motions for potential future events are accounted using a probabilistic approach (PSHA).

 

To account for changes in the geographic composition of the monitored area and other environmental or induced factors it is recommended that these steps 2 and 3  be conducted on a yearly basis to capture any changes or developing trends.

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