CISN: EEW Project
EEW process chart: Click to view one-pager descriptions.
Each data center
processes in real time the telemetered digital waveform data collected
at various broadband, strong motion and borehole sites distributed
throughout California. Critical waveform parameters are calculated
from this data, then dumped in a statewide waveform parameter pool.
detection, CISN's EEW algorithms rapidly detect and characterize each
event within seconds from event initiation. ShakeAlert implements a
parallel array of EEW detection algorithms to provide the Decision
Module with the best available data given the unique set of source
The Decision Module combines
earthquake information feeds from each algorithm and delivers a
"ShakeAlert" xml message about an earthquake in progress to subscribed
CISN SHAKEALERT USER DISPLAYS
User Display (UD) receives the xml-messages from the Decision Module
and displays their content in a simple and easily understandable
way. CISN TESTING CENTER (CTC)
CISN Testing Center Software provides automated and
interactive performance evaluations of ShakeAlert forecasts.
Earthquake Early Warning links:
For more information please contact firstname.lastname@example.org