A hurricane is a tropical storm formed over the ocean by low atmospheric pressure. As a hurricane approaches land, inordinate ocean swells with a very high tides accompany the hurricane. Normally for a hurricane, there is an "eye" located at the center with very low wind velocity. Figure Q2a depicts a hurricane hovering over the ocean swell below. The atmospheric pressure at the point 1, generally normal for the ocean, which is located 300 km from the eye is 10 m in mercury (Hg). At point 1, the winds are calm. Given that the density of seawater and mercury is 1023.6 kg/m3 and 13534 kg/m3 , respectively, and the density of air at normal sea level temperature and pressure to be 1.22 kg/m3. i. Apply a proper form of energy conservation principle and estimate the ocean swells at the eye of the hurricane at point 3 (h1) and point 2 (h2). Please note that the wind velocity at the eye of the hurricane (point 3) is very low and the wind velocity at point 2 is 70 m/s. List down all the assumptions made for this calculation. ii. If the wind velocity at point 2 is now 150 m/s, analyze the change in ocean swell at point 2 (h2) and compare it with the answer in Q2a(1)
A hurricane is a tropical storm formed over the ocean by low atmospheric pressure. As a hurricane approaches land, inordinate ocean swells with a very high tides accompany the hurricane. Normally for a hurricane, there is an "eye" located at the center with very low wind velocity. Figure Q2a depicts a hurricane hovering over the ocean swell below. The atmospheric pressure at the point 1, generally normal for the ocean, which is located 300 km from the eye is 10 m in mercury (Hg). At point 1, the winds are calm. Given that the density of seawater and mercury is 1023.6 kg/m3 and 13534 kg/m3 , respectively, and the density of air at normal sea level temperature and pressure to be 1.22 kg/m3. i. Apply a proper form of energy conservation principle and estimate the ocean swells at the eye of the hurricane at point 3 (h1) and point 2 (h2). Please note that the wind velocity at the eye of the hurricane (point 3) is very low and the wind velocity at point 2 is 70 m/s. List down all the assumptions made for this calculation. ii. If the wind velocity at point 2 is now 150 m/s, analyze the change in ocean swell at point 2 (h2) and compare it with the answer in Q2a(1)
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Transcribed Image Text:A hurricane is a tropical storm formed over the ocean by low atmospheric pressure. As a hurricane
approaches land, inordinate ocean swells with a very high tides accompany the hurricane. Normally for a
hurricane, there is an "eye" located at the center with very low wind velocity. Figure Q2a depicts a
hurricane hovering over the ocean swell below. The atmospheric pressure at the point 1, generally normal
for the ocean, which is located 300 km from the eye is 10 m in mercury (Hg). At point 1, the winds are calm.
Given that the density of seawater and mercury is 1023.6 kg/m3 and 13534 kg/m3 , respectively, and the
density of air at normal sea level temperature and pressure to be 1.22 kg/m3.
i. Apply a proper form of energy conservation principle and estimate the ocean swells at the eye of the
hurricane at point 3 (h1) and point 2 (h2). Please note that the wind velocity at the eye of the hurricane
(point 3) is very low and the wind velocity at point 2 is 70 m/s. List down all the assumptions made for this
calculation.
ii. If the wind velocity at point 2 is now 150 m/s, analyze the change in ocean swell at point 2 (h2) and
compare it with the answer in Q2a(i)
Eye
Hurricane
Calm
ocean
o level
Ocan
Figure Q2a
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