Sumatra Tsunami
Sea level instrumentation
Tides and sea level analysis
Updated versionInterpret observational data to confirm or deny the arrival of a tsunami, and to determine its strength and arrival time at the observation site
A broad but sound understanding of the instrumentation used to identify sea level changes.
A sound understanding of the theory of tides and sea level; sea level observing systems and quality control of sea level data.
Description of performance criteriaCompare observed and forecast sea level data to
confirm or deny the arrival of a tsunamiInterpret observational data to determine
tsunami strength and arrival time at the observation site
Incorporate limitations and errors in the data based on instrument response, accuracy and exposureSources of error include responses of different
instruments, exposure in relationship to tsunami direction, reliability of instrument
Required underpinning knowledge, skills & systems
The ATWS Sea Level Observation System (ASLOS) - comprising coastal based sea level stations and deep ocean tsunami detection buoys
The theory of tides and sea level; sea level observing systems and quality of sea level data.
Regional variationsDiffering sea level gauge types Exposure of individual instruments with
respect to the direction of the tsunami
Underpinning knowledge, skills and systemsInstrumentation used to identify sea level
changes - characteristics and accuracies, oceanic and coastal instruments
The ATWS Sea Level Observation System (ASLOS) - comprising coastal based sea level stations and deep ocean tsunami detection buoys
Accuracy and limitations of the data – characteristics, exposure and reliability of individual observation sites
Sea level data access systems and site information
Key Learning Resources To be added