Lab 5A

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University of Houston Downtown *

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1304

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Geography

Date

Dec 6, 2023

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docx

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Uploaded by ChiefHerringPerson172

1.While viewing the first portion of the video above the equator, imagine seeing an object on the equator itself. As Earth rotates, the object rotates with it and _________. a. moves straight ahead 2. From above the North Pole, all points on Earth's surface (except directly at the North Pole follow curved paths concentric to the North Pole as Earth rotates. Seen this way, Earth's rotation is ________. b. counterclockwise 3. As viewed from above the South Pole, all points on Earth's surface (except directly at the South Pole) circle the South Pole as Earth rotates. Earth's rotation from this vantage point is ________. a. clockwise 4. In the Northern Hemisphere, a high-pressure system (H) has a high-pressure core at the center. The air flows from higher pressure at the center to lower pressure along the perimeter. Along this path, because of the Coriolis Effect, air curves to the right producing _______ motion. a. clockwise 5. Off the coast of Africa, the water in the Canary Current flows south between 30°N and 10°N. The freely moving water is deflected by the Coriolis Effect _________. b. to the right into the open ocean 6. Run the Wind Direction Video (Link 5A-3), looking for similarities between it and Figure 5A-1. The observed surface wind circulation in the North Atlantic Ocean of the video flows generally _______. This _______ follow what you would expect for the Northern Hemisphere subtropical anticyclones (high) as seen in Figure 5A-l. a. clockwise ... does 7. In the Water Mound video, the winds over the North Atlantic Ocean basin exhibit a clockwise circulation, as seen from above, with the center in the _______ portion of the North Atlantic Ocean Basin. c. west-central 8. From the area described in #7, the net wind-generated Ekman transport is to the ______, producing convergence of water and _______ of surface water.

b. right ... mounding 9. Contour lines approximate the configuration of the water mound. The highest part of the mound is in the ________ portion of the basin. This final shape displayed by the contour lines in the video is a common characteristic of the large subtropical gyres of the world ocean. c. west-central 10. In the Ocean Current video, the light blue parcel of water initially near the center of the mound is set into motion down the sloping water surface by the pressure gradient force (thin blue arrow). As soon as the water parcel starts moving, a Coriolis force (green arrow) arises to account for the effect of Earth's rotation and begins to deflect the parcel to the _______ of its direction of movement in the _______ hemisphere. b. right ... Northern 11. The water parcel speeds up as it flows down the sloping surface, which strengthens the Coriolis force. As seen in the Ocean Current video, this causes the parcel to curve more. Throughout, the pressure gradient force always remains oriented directly downhill and perpendicular to the contour lines. In the second position of the water parcel, the thick white arrow shows the direction of motion. In the global view, this causes the light blue water parcel to turn more toward the _________. b. west 12. The parcel will continue to speed up, causing the Coriolis force to increase, which will result in the parcel curving more. The Coriolis force increases until it is equal in magnitude and acting in the direction opposite to the pressure gradient force. Once the two forces balance, the animation shows that the water flows _______ the contour lines. a. parallel to 13. In the Northern Hemisphere, the paths of water parcels initially flowing downhill from the center of the mound (the highest part) turn to produce an overall ________ circulation. a. clockwise 14. Because the contour lines in the western portion of the mound are more closely spaced than elsewhere in the dome, you can assume that is where the pressure gradient force is the ______. a. strongest

15. The Coriolis Effect also plays a similar role in the formation and maintenance of subtropical gyres in the Southern Hemisphere. There, the Coriolis force arising from the Coriolis Effect acts 90° to the left of the direction of motion and produces subtropical ocean gyres that circulate _______when seen from above. b. counterclockwise 16. The Florida Current and Gulf Stream current extend from near the southern tip of Florida to Cape Hatteras, NC. Its position and flow form one leg of the _______. a. North Atlantic gyre 17. The right limb of the Southern pacific gyre consists of the __ Current that travels to the ____. a. Peru ... north

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Lab 5A

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