Fig. 10-CO, p. 264. Fig. 10-1, p. 266 Wave direction Wave.

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Presentation transcript:

Fig. 10-CO, p. 264

Fig. 10-1, p. 266

Wave direction Wave

Fig. 10-1, p. 266 Wave direction Wave Stepped Art

Fig. 10-2, p. 266

Direction of wave motion AB Wavelength Height Still water level Crest Trough Frequency: Number of wave crests passing point A or point B each second Orbital path of individual water molecule at water surface Period: Time required for wave crest at point A to reach point B

Fig. 10-3, p. 267

Direction of wave motion Wave-length Still water level Crest Trough Crest 1/2 wave- length depth

Fig. 10-4, p. 267

Stokes drift (mass transport) No mass transport Wave Closed orbit after one period Open orbit after one period

Table 10-1, p. 268

Fig. 10-5, p. 269

Seismic disruption Disturbing force landslides GravityWind Restoring force Gravity Surface tension Type of wave TideTsunamiSeicheWind wave Capillary wave (ripple) 24 hr. Amount of energy in ocean surface 100,000 sec (1 1/4 days) 10,000 sec (3 hr) 1,000 sec (17 min) 100 sec10 sec1 sec1/10 sec1/100 sec Period (time, in seconds for two successive wave crests to pass a fixed point) Frequency (waves per second) 12 hr.

Fig. 10-6, p. 269

Fig. 10-7, p. 270

30.6 Wavelength (m) Speed (mph) Period (in seconds) Speed (m/sec) Wavelength (ft) ,312 1,640 1,

Fig. 10-8, p. 271

Wind b a Sea surface Maximum wavelength 1.73 cm (0.68 in.)

Fig. 10-9, p. 271

Fig , p. 272

Stepped Art

Fig , p. 273

Fully developed seas Changing to swell Ripples to chop to wind waves Direction of wave advance Wind Length of fetch

Table 10-2, p. 273

Fig , p. 274

Fig , p. 274

Fig , p. 275

7 across 1 high 120°

Fig , p. 275

12 a b Constructive interference (addition) Destructive interference (subtraction) Constructive interference (addition)

Fig , p. 276

Fig , p. 277

Depth = 1/2 wavelength Surf zone

Box 10-1, p. 278

Fig a, p. 279

Fig b, p. 279

Fig a, p. 279

Direction of progress Wave crests Waves begin to "feel bottom" here, water depth is L/2. Bottom contours Shoreline

Fig b, p. 279

Fig a, p. 280

Fig b, p. 280

Waves A and B create a checkerboard of peaks and troughs A B

Fig , p. 280

Fig , p. 280

(Every tenth wave crest shown) 0 10 Waves moving Islands Areas of wave crest reinforcement due to diffraction and interference

Fig , p. 281

Fig a, p. 281 Node Crest Node Crest Trough No motion Maximum water flow No motion 1 23

Fig b, p. 281 Node Crest Trough Maximum water flow No motion Trough 45 Starts again at 2

Fig a, p. 282

Wind waves on surface Less dense water Pycnocline Internal wave crest Denser water

Fig b, p. 282

Fig c, p. 282

Fig a, p. 283

CCW spin Direction of storm and storm surge Low atmospheric pressure Dome of water

Low atmospheric pressure CCW spin Direction of storm and storm surge Stepped Art Fig a, p. 283

Fig b, p. 283

Fig a, p. 284

Fig b, p. 284

Fig a, p. 285

Fig b, p. 285

Buffalo Toledo 172 Lake Erie water level (meters above sea level) :00 0:00 12:00 0:00 12:00 0:00 12:00 12 November13 November14 November15 November b Date 0:00

Fig , p. 286

Fig a, p. 287

Fig b, p. 287

Fig c, p. 287

Fig d, p. 287

Fig e, p. 287

Fig , p. 288

Fig , p. 288

Fig a, p. 289

Fig b, p. 289

Fig c, p. 289

Fig , p. 290

Fig , p. 290

November 14, 1994 Mindoro Island Maximum wave: 7 m Fatalities: 49 July 12, 1993 Okushiri, Japan Maximum wave: 31 m Fatalities: 239 October 9, 1995 Jalisco, Mexico Maximum wave: 11 m Fatalities: 1 January 1, 1996 Sulawesi Island Maximum wave: 3.4 m Fatalities: 9 February 17, 1996 Irian Jaya Maximum wave: 7.7 m Fatalities: 161 September 2, 1992 Nicaragua Maximum wave: 10 m Fatalities: 170 December 12, 1992 Flores Island Maximum wave: 26 m Fatalities: >1,000 July 17, 1998 Papua New Guinea Maximum wave: 15 m Fatalities: >2,200 June 2, 1994 East Java Maximum wave: 14 m Fatalities: 238 December 26, 2004 Indonesia and vicinity Maximum wave: 35 m Fatalities: >176,000 February 21, 1996 North coast of Peru Maximum wave: 5 m Fatalities: 12

Fig , p. 291

Fig a, p. 292

Fig b, p. 292

Fig c, p. 292

Fig , p. 293

GOES Satellite Transducers Signal flag Acoustic telemetry Glass ball flotation ~6000 m Transducer Bottom pressure recorder Sensor anchor Anchor

Table 10-3, p. 293