GGR378H5 Lecture Notes - Lecture 6: Global Sea Level Observing System, Estuary, Sunda Trench
Document Summary
Tsunami monitoring and early warning: planning for the future. Basically the same as any wave terminology. Compare to seismic wave terminology, sound wave terminology, etc. Wavelength ( ) 10s to 100s of km. Velocity (v) up to 1000 km/hr. Open ocean long, low swells (1-2 m) In lakes and closed water bodies: seiche. Dec. 26, 2004 (dawn) mm = 9. 1. 430,000 homes + 100,000 fishing boats + >3,000 km of roads destroyed. Compare natural hazard damage between most and least econ developed countries. Impacts much greater b/c of reduced natural buffering capacity of shoreline. Role of aquaculture and other shoreline modification. One of the best-studied large quakes ever. Gitews (german indonesian tsunami early warning system) Detect changes in water pressure on the ocean floor. Transmit data via orbiting satellites in real time. Deep ocean assessment and reporting of tsunami (dart) buoys. Gloss (global sea level observing system) coastal tidal gauges. Compare to historical data on tsunamigenic events.