Oceanography questions #4 | Geography homework help


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(E4) Drill #4: Exploring Coastal Upwelling

Goals

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  • Understand how scientists reverberation address in enclose purposes, azimuth appearances, and quadrant appearances.

  • Investigate the alliance among bends, manner prevalents, sea manner atmosphere and upwelling and

downwelling.
Determine if upwelling or downwelling was occuring concurrently the Pacific Northwest seashore in September of 2013.

Seasonal upwelling is a very momentous order not exact to the Pacific Northwest but to numerous seashoreal regions in the globe. During the summer in the Northern Hemisphere, upwelling is expediten by bends blowing from the North to the South (Northerlies) that, consummately after a while the Coriolis Effect, expedite manner soak off-shore and out to sea.

Upwelling pulls occult sea soak up to the manner making the manner seashoreal sea further salty, self-possessed, and nutrient superb. The added nutrients in the resplendent manner soaks trigger firm phytoplankton development and multiplicity, which is the vile of the livelihood web and supports the momentous fisheries concurrently the West Seashore of the US.

To estimate and reverberation referring-to addresss on Earth, scientists use enclose purposes, azimuth appearances, and quadrant appearances. This estimatement classification estimates spiritless addresss, as if you were in the air looking down at a downsuitable manner. Take a few minutes to revisal these media on enclose purposes, azimuth appearances, and quadrant appearances:

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The shape adown embodys these three classifications by giving the colonization of the red something using each classification.

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Compass purpose: SE Azimuth Bearing: 140° Bearing: S40°E
(E4) Drill #4 - Page 1 of 10

Once you learn the dissonance among the three classifications (enclose purposes, azimuth appearances, and quandrant

bearings), consummate the drill adown.

On the contrivance of a enclose to the suitable, wear that “A” is naught degrees. List the enclose purpose, azimuth appearance, and quandrant appearance of learning V, W, X, Y, and Z.

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Compass Azimuth Quandrant Purpose Appearance Mien

V

______________ ______________ ______________ Z

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1) V.
2) W.
3) X.
4) Y.
5) Z. ______________ ______________ ______________

______________ ______________ ______________ ______________ ______________ ______________ ______________ ______________ ______________

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If you believe you learn enclose addresss, you may go on to the contiguous part-among-among of this drill

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Our aggravateall sight for this drill is to rejoinder the scrutiny: In past September 2013, was upwelling occurring on the Pacific Northwest seashore?

We conquer revisal indicators of upwelling using axioms from NOAA. We conquer then synthesize those indicators to specify if upwelling is occurring. Questions that you conquer rejoinder in Tests & Surveys for this drill are numbered adown and specifyd in bold, italicized extract adown.

Columbia River

Stonewall Bank Port St Georges

California

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We conquer revisal sundry axioms sources for this drill. We conquer revisal axioms from September 2013 for three NOAA support stations: Stonewall Bank, Port St Georges, and the Columbia River Bar. The abut colonization of these supports is highlighted on the map to the suitable. For your spare-time, the support axioms you conquer use is middle at the end of this drill. You do not feel to mark the links aloft for this drill, cosmical you are spirited in inspection the axioms sources.

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We conquer besides revisal maps of sea prevalent address off the seashore of Oregon. The axioms you conquer revisal is from this site: Surface Currents Of The Oregon Coastal Ocean. For your spare-time, the map you conquer use is middle at the end of this drill. You do not feel to mark the links aloft for this drill, cosmical you are spirited in inspection the axioms sources.

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(E4) Drill #4 - Page 2 of 10

Indicator #1: Bend Address

As we knowing in our extract readings, bend address is an momentous expediter of seaic upwelling. Gladden revisal this concept on page 211, shape 7.12, of your extractbook.

6) What bend address, referring-to to the shoreline, is indulgent for upwelling concurrently the west seashore of North America?

  1. Towards the seashore

  2. Away from the seashore

  3. Parallel to the seashore and blowing north

  4. Parallel to the seashore and blowing south

7) Given your rejoinder to the preceding scrutiny, what address is this in azimuth degrees on a enclose?

a. 0°
b. 90° c. 180° d. 270°

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The three graphs on pages 7 through 9 of this worksheet show bend address aggravate five days for our three colonizations. The something in the conspicuous left nook of each map corresponds to the somethings on the map on the preceding page. [Green: Columbia River, Blue: Stonewall Bank, Red: Port St Georges.] Larger statements of these graphs are besides linked on the Drill #4 page of Module (7) in Canvas. Take a few minutes to orient yourself after a while the axioms shown on each graph.

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8) What inconstant is displayed on the x-axis (horizontal, concurrently the floor) of each graph? ___________________ 9) What inconstant is displayed on the y-axis (vertical, concurrently the left interest) of each graph? ______________________ 10)What does the cerulean thread of each graph specify? ___________________________________________________________________

Using the graphs of bend address for each colonization on pages 7-9 of this worksheet, gladden rejoinder the subjoined scrutinys:

11)What is the mediocre bend address, in degrees, for each colonization? To specify the mediocre, disown any main fluctuations such as those on 9/21 and 9/24, and proceedings the esteem that is most spiritless on the graph.

  1. Columbia River Mediocre Bend Direction______________

  2. Stonewall Bank Mediocre Bend Direction______________

c. Port St. Georges Mediocre Bend Address _____________

  1. Columbia River Mediocre Bend Direction______________

  2. Stonewall Bank Mediocre Bend Direction______________

c. Port St. Georges Mediocre Bend Address _____________

12)Referring to a compass, such as this one, convert the degrees aloft to a enclose purpose (letters).

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13)Does the ascendant mediocre bend address at these colonizations specify that upwelling may be occurring? Why or why not?______________________________________________________________________________________________

________________________________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________________________________

(E4) Drill #4 - Page 3 of 10

Indicator #2: Manner Currents

Surface prevalents, expediten by bends and Ekman Transport, expedite upwelling and downwelling. Gladden revisal this concept on page 211, shape 7.12, of your extractbook and rejoinder the subjoined scrutinys.

14)In areas of upwelling, manner prevalents provoke __________________ the seashore. a. Away from

b. Towards

The personateation on page 10 of this worksheet shows the address and urge of manner prevalents concurrently the Pacific Northwest. On the map, the distortion of the triangles specifys urge and the arrows specify address. A larger statement of this personateation is on page X of this drill. A larger statements of this map is besides linked on the Drill #4 page of Module (7) in Canvas.

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15)What inconstant is displayed on the x-axis (horizontal, concurrently the floor) of the personateation? _____________________ 16)What inconstant is displayed on the y-axis (vertical, concurrently the left interest) of the personateation? ________________________ 17)What do the arrows specify on this personateation?________________________________________________________________________ 18)What do the distortions specify on this personateation? _________________________________________________________________________

Look at the ascendant specimen of manner prevalents on this map to rejoinder the scrutiny adown.

19)The axioms in the personateation of manner prevalents specifys that, aggravateall, manner soak is tender ____________________ the Pacific Northwest Coast.

a. Towards b. Away from

20)Do the manner prevalents at these colonizations specify that upwelling may be occurring? Why or why not?

____________________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________________________________

(E4) Drill #4 - Page 4 of 10

Indicator #3: Soak Atmosphere

During upwelling, the soak atmosphere concurrently a seashorethread conquer veer as sea soak is brought to the manner. Revisal exception 7.3 in your extract, and rejoinder this scrutiny:

21)Upwelling is associated after a while _______________ soak brought to the sea’s manner. a. Self-possessed

b. Warm

  1. 22)  The sea atmosphere quickly concurrently the northwest Pacific Seashore is _____________________ than that of the extreme Pacific Ocean.

    a. Warmer

    b. Colder

  2. 23)  Does the soak atmosphere concurrently the northwest Pacific Seashore specify that upwelling may be

    occurring? Why or why not? __________________________________________________________________________________________ ______________________________________________________________________________________________________________________________

The map adown is harmonious to one that you revisaled in Drill 3. This map is showing soak atmosphere, at the sea manner, for September 22, 2013. Look at the personateation, and then rejoinder the scrutiny adown the personateation.

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(E4) Drill #4 - Page 5 of 10

We feel now examined bends, manner prevalents, and sea atmosphere for the Northwest Pacific Coast. Based on these three indicators, gladden rejoinder the subjoined scrutiny:

24) In past September 2013, was upwelling occurring on the Pacific Northwest seashore? Why or why not? Compose your rejoinder in 5-10 consummate sentences that embody the three indicators you revisaled aloft. Use your own expression, no quotes and no servile and pasting from the neither extract nor onthread sources.

You conquer succumb your rejoinders to this drill in a Satire designated (E4) Drill #4 Quiz. Here are a few details on the satire:

You conquer feel 60 minutes to consummate the satire from the term you unreserved it. COMPLETE THE EXERCISE QUESTIONS BEFORE OPENING THE QUIZ!

  • The password for this satire is upwell

  • Work through the satire by rejoindering the scrutinys after a while a provision rejoinder. You conquer be rejoindering all of the

questions in the Quizzes implement.
o Questions conquer be presented as a union of multiple-choice and condensed rejoinder scrutinys. o For condensed rejoinder scrutinys, use consummate sentences and your own expression.

Your pedagogue conquer manually proceeding part-amongs of this satire. You may not see a jaw straightway. Once your pedagogue finishes grading this drill you conquer admit an assertion advising you that feedback is beneficial.

(E4) Drill #4 - Page 6 of 10

Wind Direction, September 20-25, 2013, Columbia River.

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(E4) Drill #4 - Page 7 of 10

Wind Direction, September 20-25, 2013, Stonewall Bank

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(E4) Drill #4 - Page 8 of 10

Wind Direction, September 20-25, 2013, Port St. Georges

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(E4) Drill #4 - Page 9 of 10

 

Speed of prevalent (cm/sec)