Lecture_06 - RUNUP AND WAVE TRAP 5 TO 10 M (15 TO 30 FEET)...

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LECTURE 6: TSUNAMIS DYNAMICS 1.0 ORIGIN EARTHQUAKES EARTHQUAKE MAGNITUDE -> SIZE OF TSUNAMIS? HORIZONTAL DISPLACEMENT -> WEAK SAN FRANCISCO (1906) EARTHQUAKE VERTICAL DISPLACEMENT -> STRONG NONACCRETING -> SURFACE RUPTURE -> TSUNAMIS ACCRETING -> SLUMPING -> TSUNAMIS TSUNAMI EARTHQUAKES VOLCANIC ERUPTIONS PLINIAN ERUPTIONS - KRAKATOA 1883 30 TO 40 M HIGH WAVES SUBMARINE LANDSLIDES GOOD FRIDAY EARTHQUAKE, ALASKA 1964 30 M HIGH AT VALDEZ, 5 M HIGH IN HAWAII UNDERWATER EXPLOSIONS BIKINI ATOLL 1940S AND 1950S TERRESTRIAL LANDSLIDES VAIONT DAM DISASTER, ITALY 1965 LITUYA BAY, ALASKA 1958
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60 M HIGH WAVE 1.1 PHYSICAL CHARACTERISTICS WAVELENGTH 200 KM (120 MILES) OR GREATER IN OPEN OCEAN AMPLITUDE ONE HALF OF WAVE HEIGHT 1 M IN OPEN OCEAN (3 FEET)
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Unformatted text preview: RUNUP AND WAVE TRAP 5 TO 10 M (15 TO 30 FEET) NEAR SHORE 20 TO 40 M (60 TO 120 FEET) HIGH A BORE @ IN RESTRICTED BAYS VELOCITY APPROXIMATELY 950 KM/HOUR (600 MILES/HOUR) DRAWDOWN 1.2 RISKS AND HAZARDS 94 DESTRUCTIVE TSUNAMI OVER PAST CENTURY > 51,000 DEATHS MEASUREMENT OF TSUNAMI MAGNITUDE SCALE OF TSUNAMI INTENSITY ( -1 TO 4) TSUNAMI FREQUENCY 1.3 PREDICTION AND WARNING BASINAL-WIDE WARNING SYSTEMS (>750 KM) PACIFIC TSUNAMI WARNING CENTER. HONOLULU BASED ON SEISMIC AND TIDAL STATIONS APPROX. 1 HOUR WARNING EFFECTIVE SYSTEM REGIONAL WARNING SYSTEMS (100 TO 750 KM) JAPAN, ALASKA,, CHILE, FRENCH POLYNESIA BASED ON EARTHQUAKE MAGNITUDE AND LOCATION 10 TO 12 MINUTE WARNING MANY FALSE ALARMS...
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This note was uploaded on 07/25/2008 for the course ISP 203A taught by Professor Larson during the Fall '08 term at Michigan State University.

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Lecture_06 - RUNUP AND WAVE TRAP 5 TO 10 M (15 TO 30 FEET)...

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