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

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Presentation on theme: "Fig. 10-CO, p. 264. Fig. 10-1, p. 266 Wave direction Wave."— Presentation transcript:

1 Fig. 10-CO, p. 264

2 Fig. 10-1, p. 266

3 Wave direction Wave

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

5 Fig. 10-2, p. 266

6 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

7 Fig. 10-3, p. 267

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

9 Fig. 10-4, p. 267

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

11 Table 10-1, p. 268

12 Fig. 10-5, p. 269

13 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) 110100 Frequency (waves per second) 12 hr.

14 Fig. 10-6, p. 269

15 Fig. 10-7, p. 270

16 30.6 Wavelength (m) 0100200300400500600 27.8 18 17 62 25.0 15 22.2 11 14 13 16 50 9 12 37 19.4 16.6 11.0 5.6 4 13 8.4 3 5 7 Speed (mph) Period (in seconds) 25 13.8 Speed (m/sec) 2.8 0.0 1 0 2 Wavelength (ft) 0328656984 1,312 1,640 1,968 10 8 6

17 Fig. 10-8, p. 271

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

19 Fig. 10-9, p. 271

20 Fig. 10-10, p. 272

21 5432 1 65432 1 65432 76543 76543 7654 8765 876 5

22 Stepped Art 76543 65432 876 5 8765 76543 5432 1 7654 65432 1

23 Fig. 10-11, p. 273

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

25 Table 10-2, p. 273

26 Fig. 10-12, p. 274

27 Fig. 10-13, p. 274

28 Fig. 10-14, p. 275

29 7 across 1 high 120°

30 Fig. 10-15, p. 275

31 12 a b Constructive interference (addition) Destructive interference (subtraction) Constructive interference (addition)

32 Fig. 10-16, p. 276

33 Fig. 10-17, p. 277

34 1 2 4 5 3 Depth = 1/2 wavelength Surf zone

35 Box 10-1, p. 278

36 Fig. 10-18a, p. 279

37 Fig. 10-18b, p. 279

38 Fig. 10-19a, p. 279

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

40 Fig. 10-19b, p. 279

41 Fig. 10-20a, p. 280

42 Fig. 10-20b, p. 280

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

44 Fig. 10-21, p. 280

45 Fig. 10-22, p. 280

46 (Every tenth wave crest shown) 0 10 Waves moving 20 30 Islands Areas of wave crest reinforcement due to diffraction and interference

47 Fig. 10-23, p. 281

48 Fig. 10-23a, p. 281 Node Crest Node Crest Trough No motion Maximum water flow No motion 1 23

49 Fig. 10-23b, p. 281 Node Crest Trough Maximum water flow No motion Trough 45 Starts again at 2

50 Fig. 10-24a, p. 282

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

52 Fig. 10-24b, p. 282

53 Fig. 10-24c, p. 282

54 Fig. 10-25a, p. 283

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

56 Low atmospheric pressure CCW spin Direction of storm and storm surge Stepped Art Fig. 10-25a, p. 283

57 Fig. 10-25b, p. 283

58 Fig. 10-26a, p. 284

59 Fig. 10-26b, p. 284

60 Fig. 10-27a, p. 285

61 Fig. 10-27b, p. 285

62 176 175 Buffalo 174 173 Toledo 172 Lake Erie water level (meters above sea level) 171 12:00 0:00 12:00 0:00 12:00 0:00 12:00 12 November13 November14 November15 November b Date 0:00

63 Fig. 10-28, p. 286

64 Fig. 10-29a, p. 287

65 Fig. 10-29b, p. 287

66 Fig. 10-29c, p. 287

67 Fig. 10-29d, p. 287

68 Fig. 10-29e, p. 287

69 Fig. 10-30, p. 288

70 Fig. 10-31, p. 288

71 Fig. 10-32a, p. 289

72 Fig. 10-32b, p. 289

73 Fig. 10-32c, p. 289

74 Fig. 10-33, p. 290

75 Fig. 10-34, p. 290

76 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

77 Fig. 10-35, p. 291

78 Fig. 10-36a, p. 292

79 Fig. 10-36b, p. 292

80 Fig. 10-36c, p. 292

81 Fig. 10-37, p. 293

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

83 Table 10-3, p. 293


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