Oceanography Questions #4


PLEASE READ CAREFULLY AND ANSWER TO INSTRUCTIONS:

 

(E4) Drill #4: Exploring Coastal Upwelling

Goals

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  • Understand how scientists communication address in circumvent purposes, azimuth manners, and quadrant manners.

  • Investigate the alikeity among curves, manner ordinarys, sea manner weather and upwelling and

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

Background

Seasonal upwelling is a very momentous way not reasonable to the Pacific Northwest but to numerous seaboardal regions in the earth. During the summer in the Northern Hemisphere, upwelling is inciten by curves blowing from the North to the South (Northerlies) that, in-one delay the Coriolis Effect, butt manner importio off-shore and out to sea.

Upwelling pulls subterranean sea importio up to the manner making the manner seaboardal sea balance salty, indifferent, and nutrient high-flavored. The adventitious nutrients in the glowing manner imspace trigger rapid phytoplankton enlargement and multiplicity, which is the cheap of the maintenance web and supports the momentous fisheries concurrently the West Seaboard of the US.

Background Knowledge

To mete and communication referring-to addresss on Earth, scientists use circumvent purposes, azimuth manners, and quadrant manners. This metement scheme metes spiritless addresss, as if you were in the air looking down at a tame manner. Take a few minutes to criticism these resources on circumvent purposes, azimuth manners, and quadrant manners:

  • Thinking in Circles (http://academic.brooklyn.cuny.edu/geology/leveson/core/linksa/comp.html).

  • Section: Points of a Circumvent (http://gwydir.demon.co.uk/jo/units/angles.htm#compass)

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The appearance adown summarizes these three schemes by giving the colony of the red bigwig using each scheme.

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

Once you learn the separation among the three schemes (circumvent purposes, azimuth manners, and quandrant

bearings), thorough the drill adown.

On the intention of a circumvent to the equitable, feign that “A” is naught degrees. List the circumvent purpose, azimuth manner, and quandrant manner of learning V, W, X, Y, and Z.

W

A
Y

X

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Compass Azimuth Quandrant Purpose Manner Course

V

______________ ______________ ______________ Z

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

______________ ______________ ______________ ______________ ______________ ______________ ______________ ______________ ______________

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If you gard you learn circumvent addresss, you may go on to the direct portio of this drill

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The Drill

Our balanceall motive for this drill is to repartee the scrutiny: In advanced September 2013, was upwelling occurring on the Pacific Northwest seaboard?

We conquer criticism indicators of upwelling using postulates from NOAA. We conquer then synthesize those indicators to flow if upwelling is occurring. Questions that you conquer repartee in Tests & Surveys for this drill are numbered adown and involved in bold, italicized quotation adown.

Columbia River

Stonewall Bank Port St Georges

California

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We conquer criticism divers postulates sources for this drill. We conquer criticism postulates from September 2013 for three NOAA float stations: Stonewall Bank, Port St Georges, and the Columbia River Bar. The approach colony of these floats is highlighted on the map to the equitable. For your opportunity, the float postulates you conquer use is middle at the end of this drill. You do not possess to investigate the links balancehead for this drill, original you are spirited in inspection the postulates sources.

Washington

Oregon

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We conquer too criticism maps of sea ordinary address off the seaboard of Oregon. The postulates you conquer criticism is from this site: Surface Currents Of The Oregon Coastal Ocean. For your opportunity, the map you conquer use is middle at the end of this drill. You do not possess to investigate the links balancehead for this drill, original you are spirited in inspection the postulates sources.

NORTH

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(E4) Drill #4 - Page 2 of 10

Indicator #1: Curve Address

As we knowing in our quotation readings, curve address is an momentous inciter of seaic upwelling. Gladden criticism this concept on page 211, appearance 7.12, of your quotationbook.

6) What curve address, referring-to to the shoreline, is auspicious for upwelling concurrently the west seaboard of North America?

  1. Towards the seaboard

  2. Away from the seaboard

  3. Parallel to the seaboard and blowing north

  4. Parallel to the seaboard and blowing south

7) Given your repartee to the anterior scrutiny, what address is this in azimuth degrees on a circumvent?

a. 0°
b. 90° c. 180° d. 270°

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The three graphs on pages 7 through 9 of this worksheet show curve address balance five days for our three colonys. The bigwig in the surpassing left recess of each map corresponds to the bigwigs on the map on the anterior page. [Green: Columbia River, Blue: Stonewall Bank, Red: Port St Georges.] Larger renderings of these graphs are too linked on the Drill #4 page of Module (7) in Canvas. Take a few minutes to orient yourself delay the postulates shown on each graph.

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8) What capricious is displayed on the x-axis (horizontal, concurrently the floor) of each graph? ___________________ 9) What capricious is displayed on the y-axis (vertical, concurrently the left margin) of each graph? ______________________ 10)What does the bluish verse of each graph dramatize? ___________________________________________________________________

Using the graphs of curve address for each colony on pages 7-9 of this worksheet, gladden repartee the subjoined scrutinys:

11)What is the mean curve address, in degrees, for each colony? To mention the mean, repudiate any important fluctuations such as those on 9/21 and 9/24, and chronicles the appreciate that is most beggarly on the graph.

  1. Columbia River Mean Curve Direction______________

  2. Stonewall Bank Mean Curve Direction______________

c. Port St. Georges Mean Curve Address _____________

  1. Columbia River Mean Curve Direction______________

  2. Stonewall Bank Mean Curve Direction______________

c. Port St. Georges Mean Curve Address _____________

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

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13)Does the most-common mean curve address at these colonys specify that upwelling may be occurring? Why or why not?______________________________________________________________________________________________

________________________________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________________________________

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Indicator #2: Manner Currents

Surface ordinarys, inciten by curves and Ekman Transport, incite upwelling and downwelling. Gladden criticism this concept on page 211, appearance 7.12, of your quotationbook and repartee the subjoined scrutinys.

14)In areas of upwelling, manner ordinarys advance __________________ the seaboard. a. Away from

b. Towards

The likeness on page 10 of this worksheet shows the address and hasten of manner ordinarys concurrently the Pacific Northwest. On the map, the garbling of the triangles specifys hasten and the arrows specify address. A larger rendering of this likeness is on page X of this drill. A larger renderings of this map is too linked on the Drill #4 page of Module (7) in Canvas.

c. Parallel to (along)

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15)What capricious is displayed on the x-axis (horizontal, concurrently the floor) of the likeness? _____________________ 16)What capricious is displayed on the y-axis (vertical, concurrently the left margin) of the likeness? ________________________ 17)What do the arrows dramatize on this likeness?________________________________________________________________________ 18)What do the garblings dramatize on this likeness? _________________________________________________________________________

Look at the most-common archetype of manner ordinarys on this map to repartee the scrutiny adown.

19)The postulates in the likeness of manner ordinarys specifys that, balanceall, manner importio is affecting ____________________ the Pacific Northwest Coast.

a. Towards b. Away from

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

____________________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________________________________

(E4) Drill #4 - Page 4 of 10

Indicator #3: Importio Weather

During upwelling, the importio weather concurrently a seaboardverse conquer vary as sea importio is brought to the manner. Criticism exception 7.3 in your quotation, and repartee this scrutiny:

21)Upwelling is associated delay _______________ importio brought to the sea’s manner. a. Indifferent

b. Warm

  1. 22)  The sea weather quickly concurrently the northwest Pacific Seaboard is _____________________ than that of the enclosing Pacific Ocean.

    a. Warmer

    b. Colder

  2. 23)  Does the importio weather concurrently the northwest Pacific Seaboard specify that upwelling may be

    occurring? Why or why not? __________________________________________________________________________________________ ______________________________________________________________________________________________________________________________

The map adown is alike to one that you criticismed in Drill 3. This map is showing importio weather, at the sea manner, for September 22, 2013. Look at the likeness, and then repartee the scrutiny adown the likeness.

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(E4) Drill #4 - Page 5 of 10

Putting it all concurrently

We possess now examined curves, manner ordinarys, and sea weather for the Northwest Pacific Coast. Based on these three indicators, gladden repartee the subjoined scrutiny:

24) In advanced September 2013, was upwelling occurring on the Pacific Northwest seaboard? Why or why not? Compose your repartee in 5-10 thorough sentences that summarize the three indicators you criticismed balancehead. Use your own tone, no quotes and no unoriginal and pasting from the neither quotation nor onverse sources.

Submitting your repartees

You conquer suggest your repartees to this drill in a Sarcasm denominated (E4) Drill #4 Quiz. Here are a few details on the sarcasm:

You conquer possess 60 minutes to thorough the sarcasm from the period you notorious it. COMPLETE THE EXERCISE QUESTIONS BEFORE OPENING THE QUIZ!

  • The password for this sarcasm is upwell

  • Work through the sarcasm by reparteeing the scrutinys delay a provision apology. You conquer be reparteeing all of the

questions in the Quizzes hireling.
o Questions conquer be presented as a concert of multiple-choice and imperfect repartee scrutinys. o For imperfect repartee scrutinys, use thorough sentences and your own tone.

Your pedagogue conquer manually measure portios of this sarcasm. You may not see a score straightway. Once your pedagogue finishes grading this drill you conquer accept an proposition advising you that feedback is conducive.

(E4) Drill #4 - Page 6 of 10

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

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

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

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Surface Currents of The Oregon Coastal Ocean, September 2013

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Speed of ordinary (cm/sec)