Lab 08_ eolian and arid landscapes


Lab 08: EOLIAN AND ARID LANDSCAPES

Note: Please apply to the GETTING STARTEDmodule to imbibe how to maneuver through, and how to response the lab topics, in the Google Earth () content.

KEY TERMS

You should apprehend and imply the aftercited terms:

 

Abrasion

Loess

Rain attendant

Barchan dune

Longitudinal dune

Reversing dune

Barchanoid Ridge dune

Mesa

Star dune

Butte

Parabolic dune

Sub-tropical excellent

Canyon

Pinnacle

Transverse dune

Desertification

Plateau

Yardang

Dome dune

Playa

 

 

LAB LEARNING OBJECTIVES

After successfully completing this module, you should be telling to do the aftercited tasks:

·         Identify erosional processes and components constituted by wind

·         Identify pledgeional processes and components constituted by wind

·         Describe the processes that constitute eolian plantforms

·         Distinguish divergent sand dune emblems

·         Calculate originate

·         Interpret the topographic form of a possessionscape

 

INTRODUCTION

This module examines the eolian processes and parched environments. Topics involve dune nature, eolian processes and components, and parched plantforms. Period these subjects may reply to be different, you allure imbibe how they are inherently akin. The module starts after a period foul-mouthed commencement subjects, or vignettes, which are set-up in the cognate Google Earth improve. These vignettes give basic concepts of the eolian and parched possessionscapes. Some of the vignettes entertain brisknesss, videos, or short creed that allure yield another perspective or visual explication for the subject at workman.  After balbutiation the vignette and associated links, response the aftercited topics. Please still n ess that some links chattelsiveness interest a period to download basised on your Internet hasten.

 Expandthe INTRODUCTION folder and then check Subject 1: Introduction.

 Read Topic 1: Introduction.

Question 1: Which of the aftercited was not yieldd in the Introduction as a idiosyncrasy of an parched environment?

A.   Little subsidence

B.   Drought just vegetation

C.   Sparse vegetation

D.   Hot temperatures

 Read Topic 2: Parched Plant and Water

Question 2: What is not listed as a origin of soak for cosmical use in parched environments in Subject 2?

A.   Wells

B.   Salt soak

C.   Oases

D.   Rainfall

 Read Topic 3: Hot and Collected Deserts.

Question 3: What idiosyncrasys of polar voids compel them suittelling for examine by planetary scientists?

A.   Barren possessionscapes

B.   Cold air

C.   Isolation

D.   All of the aggravate

 Read Topic 4: Cosmical Interaction.

Question 4: Which of the aftercited is not one of the foul-mouthed techniques that cosmicals entertain occupied to seal voidification.

A.   Covering sand dunes in petroleum

B.   Building sand fences

C.   Covering sand dunes in plastic

D.   Planting vegetation

 Read Topic 5: Eolian Landscapes.

Question 5: Where is the thickest apprehendn Loess pledge and what is the profundity?

A.   Kansas, 120m

B.   Nebraska, 95m

C.   China, 335m

D.   Iran, 40m

 Collapse and uncheck INTRODUCTION

GLOBAL PERSPECTIVE

 Expand GLOBAL PERSPECTIVE. Double-click and choseneded Major Cosmos-people Deserts.

This map shows the colonization of elder voids (in tan) throughout the cosmos-people.  It is dignified to still n ess that period voids are regularly considered parched environments, parched environments are not regularly voids.  Parched environments as-well involve Mediterranean districts and semi-parched possessions, incompact others.  Areas where soak is severely scant, eolian processes befit the dominant mechanism for erosion, vehicle and pledgeion of sediments.

 Expand and choseneded Major Cities.

This map shows the colonization of elder cities located in parched environments. At give, such cities are placing increasing urgency on soak resources and contributing to voidification.

For Questions 6 to 9, emblem the instruction yieldd in the Search tab in Google Earth and comcompress Enter. When you get at your arrival, experience the instruction to gorge in the blanks underneath.

Question 6:         Cairo, Egypt (population : X)

Latitude/Longitude:

A.   30N, 31E

B.   31N, 30E

C.   C. 30S, 31W

D.   D. 31N, 30 W

Question 7: Riyad, Saudi Arabia (population : X)

Latitude/Longitude:

A.   24N, 46E

B.   46S, 24E

C.   24N, 46W

D.   46N, 24W

Question 8:         12° 2'49.53"S, 77° 0'37.67"W (population : X)

City:

A.   Santiago

B.   Lima

C.   Bogotá

D.   Paracas

Question 9:33°22'22.03"N, 112°34'48.60"W (population : X)

City:

A.   Las Vegas

B.   Los Angeles

C.   Phoenix

D.   Tucson

 Collapse and uncheck GLOBAL PERSPECTIVE

 

LOCATION OF ARID REGIONS

The aftercited constituents govern the colonization of voids:

·         Subtropical excellent urgency systems

·         Rain attendant chattels

·         Ocean floating temperatures

·         Distance to big bodies of soak

It is dignified to still n ess that two or past of these constituents may govern the colonization of voids.

 Expand the LOCATION OF ARID REGIONS folder. Double‑click and choseneded Sahara Desert.

Subtropical excellent urgency systems are generally located among 15 and 30 degrees north and south. At these colonizations, excellent urgency systems await, after a period descending air warming as it falls. The development is a air of hot temperatures and insignificant subsidence. The Sahara void is a good-natured-natured-tempered-tempered pattern of a void formed consequently of a subtropical excellent urgency system.

 Double‑click and choseneded Oregon Great Sandy Desert.

The rain attendant chattels can be seen on the leeward cause on mountain files. An air bulk approaching a mountain file is distressing upward by the mountains and subsidence developments on the windward cause of the file. On the leeward cause, the air bulk loses most of its humidity and warms as it descends the mountain file. The development is a semi-parched to parched possessionscape. The Oregon Great Sandy void is a good-natured-natured-tempered-tempered pattern.

 Double‑click and choseneded Atacama Desert.

Cold sea floatings do not significantly intensity air bulk aggravate them. The development is an air bulk containing insignificant humidity, and when the air bulk reaches plant, subsidence is closely non-existent. The Atacama Void is a good-natured-natured-tempered-tempered pattern.

 Double‑click and choseneded Gobi Desert.

The length to a big mass of soak such as an sea or sea, is a constituent, consequently soak bodies can yield humidity to air bulkes, which in round direct to subsidence. The further an area is from a big mass of soak, the short slight it is to assent-to humidity. The Gobi Void straddling the China-Mongolia band is an pattern of an parched district far from a big mass of soak.

 Double‑click and choseneded Namib Desert.

Question 10: Which of the aftercited constituents is primarily lawful for the colonization of the Namib Desert?

A.   Subtropical excellent urgency

B.   Rain attendant chattels

C.   Cold sea floatings

D.   Distance from big mass of soak

Question 11: Why did you pluck the response, or responses, you did in topic 10?

A.   Lack of clouds in imagery shows it is a subtropical excellent area

B.   The coastal beaches constitute a rain attendant toward

C.   The collected sea floating limits humidity in weather creating the coastal void

D.  The void is a covet length from any inplant mass of soak

 Double‑click and choseneded Patagonia.

Question 12: Which of the aftercited constituents are primarily lawful for the colonization of the parched possessions in Patagonia?

A.   Subtropical excellent urgency

B.   Rain attendant chattels

C.   Cold sea floatings

D.   Distance from big mass of soak

Question 13: Why did you pluck the response, or responses, you did in topic 12?

A.   It is a still n essd subtropical excellent area

B.   The coastal mountains constitute a rain attendant toward

C.   The collected sea floating limits humidity in weather creating the coastal void

D.   The void is a covet length from any inplant mass of soak

 Double‑click and choseneded Taklimakan Desert.

Question 14: Which of the aftercited constituents are primarily lawful for the colonization of the Taklimakan Desert?

A.   Subtropical excellent urgency

B.   Rain attendant chattels

C.   Cold sea floatings

D.   Distance from big mass of soak

Question 15: Why did you pluck the response, or responses, you did in topic 14?

A.   It is a still n essd subtropical excellent area

B.   The coastal beaches constitute a rain attendant toward

C.   The collected sea floating limits humidity in weather creating the coastal void

D.   The void is a covet length from any inplant mass of soak

 Double‑click, and chosened, Mojave Desert.

Question 16: Which of the aftercited constituents are primarily lawful for the colonization of the Mojave Desert?

A.   Subtropical excellent urgency

B.   Rain attendant chattels

C.   Cold sea floatings

D.   Distance from big mass of soak

Question 17: Why did you pluck the response, or responses, you did in topic 16?

A.   It is a still n essd subtropical excellent area

B.   The parched environment constitutes a rain attendant toward

C.   The collected sea floating limits humidity in weather creating the coastal void

D.   The void is a covet length from any mass of soak

 Collapse and uncheck LOCATION OF ARID REGIONS

 

 

 

EROSIONAL AND TRANSPORTATION PROCESSES AND LANDFORMS

 Expand EROSIONAL AND TRANSPORTATION PROCESSES AND LANDFORMS.

 Expand Erosional Features.

 Double‑click and choseneded Fly Over. Watch the fly aggravate of the Spider Rock colonization to get an aggravateview of the components and terrain in the area.

 Select Spider Rock. Use the transparency slide adherent to parallel the aerial photograph to the topographic map. As you can see, there are divers components contemptible to this parched environment.

 

Identify the components labeled  through .

Question 18: Component : D

A. Canyon

B. Alluvial Fan

C. Butte

D. Pinnacle

E. Plateau

F. Playa

Question 19: Component : C

A. Canyon

B. Alluvial Fan

C. Butte

D. Pinnacle

E. Plateau

F. Playa

Question 20: Component : E

A. Canyon

B. Alluvial Fan

C. Butte

D. Pinnacle

E. Plateau

F. Playa

Question 21: Component : A

A. Canyon

B. Alluvial Fan

C. Butte

D. Pinnacle

E. Plateau

F. Playa

 Double‑click . This component is set-up at the last loftiness after a periodin the district, where excellent evaporation rates liberty minerals (salt) from the soak onto the basis demeanor.

Question 22: Component : F

A. Canyon

B. Alluvial Fan

C. Butte

D. Pinnacle

E. Plateau

F. Playa

 

Depositional Processes and Landforms

 Double-click Depositional Feature. Double-click and choseneded .

Question 23: Warrant Component : B

A. Canyon

B. Alluvial Fan

C. Butte

D. Pinnacle

E. Plateau

F. Playa

 

 Double-click and choseneded Measure Length

Question 24: Abuse the length (in km) balance the Component :

A.   2km

B.   4km

C.   6km

D.   8km

Question 25: What sign awaits of cosmical essential-quality on Component ?

A.   Landing strip

B.   Trailer park

C.   Road

D.   Beach

 Double-click and choseneded Slope 1. Right‑click the distinction Slope 1, and then choseneded Show Loftiness Profile.

Using the loftiness balbutiations (that is, locate your cursor aggravate the loftiness form chart), abuse the originate of the threads. Recall that originate is rise/run and the units deficiency to be the selfselfsame when dividing (that is, twain in feet).

Question 26: What is the RISE (loftiness mould) in feet? (Select the response closest to the one you see in the Loftiness Form Window)

A.   400 ft

B.   51.4 ft

C.   21.8 ft

D.   35 ft

Question 27: What is the RUN of the thread (distance) in miles? (Select the response closest to the one you see in the Loftiness Form Window).

A.   7.73 miles

B.   4.11 miles

C.   2.05 miles

D.   5.14 miles

Question 28: What is the originate of the thread (middle originate)? (Select the response closest to the one you see in the Loftiness Form Window).

A.   25%

B.   -51.4%

C.   3.8%

D.   -35%

 Double-click and choseneded Slope 2. Right‑click the distinction Slope 2, choseneded Show Loftiness Profile, and then abuse the originate of the red thread.

Question 29: What is the RISE (loftiness mould) in feet? (Select the response closest to the one you see in the Loftiness Form Window)

A.   3000 ft

B.   -449 ft

C.   1005 ft

D.   2077 ft

Question 30: What is the RUN of the thread (distance) in miles? (Select the response closest to the one you see in the Loftiness Form Window)

A.   8.0 miles

B.   3.3 miles

C.   0.28 miles

D.   26.5 miles

Question 31: What is the originate of the thread (definitive middle originate)? (Select the response closest to the one you see in the Loftiness Form Window)

A.   84.4%

B.   -39.4%

C.   22.5%

D.   -10.9%

The x-axis is the length acovet the loftiness form.  

Question 32: The original originate is located among which length markers on the x-axis?

A.   0.75 miles and 1 mile

B.   2.25 miles and 2.5 miles

C.   2.5 miles and 2.75 miles

D.   2.75 miles and 3 miles

Question 33: Describe the topographic form of an parched possessionscape that would amount Component

A.   Steep originates gradually giving way to a tender originate

B.   Steep originates acovet the total form

C.   Gentle originates acovet the total form

D.   Alternating elevated and tender originates

SAND DUNE CLASSIFICATION

 Click SAND DUNE CLASSIFICATION.

Use the briskness to warrant idiosyncrasys of dune emblems and to consummate the ttelling underneath. The original one has been executed for you as an pattern

Dune emblem

Wind

Sand

Vegetation

Barchan

A.   Periodic reversing of direction

B.   Two directions

C.   One steady direction

D.  Varitelling directions

A.   Limited

B.   Moderate

C.   Abundant

D.   Variable

A.   Yes

B.   No

Question 34: Barchanoid Ridge

A.   Periodic reversing of direction

B.   Two directions

C.   Varitelling directions

D.   One steady direction

A.   Limited

B.   Abundant

C.   Moderate

D.   Variable

A.   Yes

B.   No

Question 35: Transverse

A.   Periodic reversing of direction

B.   Two directions

C.   One steady direction

D.   Varitelling directions

A.   Limited

B.   Moderate

C.   Variable

D.   Abundant

A.   Yes

B.   No

Question 36: Longitudinal

A.   Periodic reversing of direction

B.   One steady direction

C.   Two directions

D.  Varitelling directions

A.   Limited

B.   Moderate

C.   Abundant

D.   Variable

A.   Yes

B.   No

Question 37: Parabolic

A.   Periodic reversing of direction

B.   One steady direction

C.   Two directions

D.  Varitelling directions

A.   Limited

B.   Moderate

C.   Abundant

D.   Variable

A.   Yes

B.   No

Question 38: Star

A.   Periodic reversing of direction

B.   One steady direction

C.   Two directions

D.  Varitelling directions

A.   Limited

B.   Moderate

C.   Abundant

D.   Variable

A.   Yes

B.   No

Question 39: Dome

A.   Periodic reversing of direction

B.   One steady direction

C.   Two directions

D.  Varitelling directions

A.   Limited

B.   Moderate

C.   Variable

D.   Abundant

 

A.   Yes

B.   No

Question 40: Reversing

A.   Periodic reversing of direction

B.   One steady direction

C.   Two directions

D.  Varitelling directions

A.   Limited

B.   Moderate

C.   Abundant

D.   Variable

A.   Yes

B.   No