Earth, Moon and Mars: How They Work - PowerPoint PPT Presentation

Loading...

PPT – Earth, Moon and Mars: How They Work PowerPoint presentation | free to download - id: 1d6e8a-ZDc1Z



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Earth, Moon and Mars: How They Work

Description:

Earth, Moon and Mars: How They Work – PowerPoint PPT presentation

Number of Views:41
Avg rating:3.0/5.0
Slides: 99
Provided by: michaelw84
Learn more at: http://epscx.wustl.edu
Category:
Tags: earth | mars | moon | pictures | work

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Earth, Moon and Mars: How They Work


1
Earth, Moon and Mars How They Work
Professor Michael Wysession Department of Earth
and Planetary Sciences Washington University, St.
Louis, MO Lecture 4 Earths Water Cycle
2
Water
3
Water movement, in km3/year.
4
Deep Earth water cycle
5
(No Transcript)
6
(No Transcript)
7
Hypothetical atmospheric circulation with no
planetary rotation.
8
Average annual solar radiation received at the
surface, in watts/meter2 Q? Why is peak not
always at the equator? A Clouds
9
(No Transcript)
10
Global Biosphere
11
Distribution of arid regions
12
(No Transcript)
13
Major drainage basins of the world
14
Effect of urbanization on stream run-off
15
Stream Gradient
16
Stream Gradient
Mostly erosion
Erosion and deposition
Mostly deposition
17
Stream down-cutting works together with mass
wasting
18
(No Transcript)
19
(No Transcript)
20
(No Transcript)
21
(No Transcript)
22
Stream velocities fastest at the outside of a turn
23
Development of stream meanders and oxbow lakes
24
(No Transcript)
25
Lakes and Ponds Fill in quickly through
sedimentation
26
1993 Flood Missouri, Mississippi, and Illinois
Rivers
27
(No Transcript)
28
Nile Delta
29
Deltas
30
Birdfoot Delta Mississippi River
31
(No Transcript)
32
  • Shoreline Battleground
  • Tectonics, Stream Valleys, Sea-level rise make
    shorelines jagged.
  • Wave action Ocean Currents make them straight
    again.

33
(No Transcript)
34
(No Transcript)
35
(No Transcript)
36
(No Transcript)
37
(No Transcript)
38
(No Transcript)
39
(No Transcript)
40
(No Transcript)
41
Water Table Similar to surface, but smoother
42
Water Table can change with the seasons
43
Whole crust and mantle beneath the water table is
saturated, though porosity is greatest at the top.
44
Springs form when water table or perched water
table intersects the surface.
45
Artesian System
46
Ogallala aquifer
47
Ogallala aquifer contains water from Ice Age
runoff
48
Caves form by dissolution when they are below the
water table.
49
Typical cave features
50
(No Transcript)
51
Sinkhole
52
Karst region early development
53
Karst region mature development
54
Glacial Ice Budget
55
Note the change in color, top to bottom.
56
(No Transcript)
57
(No Transcript)
58
Fjord Glacial valley flooded by rising sea level
59
(No Transcript)
60
(No Transcript)
61
Glacial ponds (kettles)
Erratics boulders carried great distances within
the ice.
62
Minnesota Land of Ten Thousand Lakes
63
Drumlin Ice moved to the right.
64
Terminal Moraines Ex/ Cape Cod and Long Island
65
Antarctica
66
Greenland
67
(No Transcript)
68
(No Transcript)
69
Glacial Loess Covers much of the Midwestern U.S.
70
(No Transcript)
71
(No Transcript)
72
(No Transcript)
73
(No Transcript)
74
Average ocean surface currents (in
February-March). Currents determined by wind
patterns, Coriolis effect, and continental
outlines.
75
GULF STREAM Brings Warm Currents to Europe
76
Notice that Great Britain is at the same latitude
as Hudson Bay and southern Alaska.
77
Who first mapped the Gulf Stream?
78
Who first mapped the Gulf Stream? Ben Franklin
79
Simplified conveyor belt of oceanic circulation.
80
If you visit Gibraltar, the current is always
flowing eastward, into the Mediterranean. How is
this possible?
81
Evaporation makes the Mediterranean water salty
and dense, so it sinks.
82
Rapid reduction in air pressure with altitude.
83
When I visited Disneyworld in the summer, people
told me that it always rains in the
afternoon. Why?
84
The warm land air rises, causing condensation and
precipitation.
Convergence
85
(No Transcript)
86
(No Transcript)
87
(No Transcript)
88
(No Transcript)
89
(ITCZ Intertropical Convergence Zone)
(Actual flow patterns are more complex.)
90
(No Transcript)
91
Warm front comes in slowly, gradually.
92
Cold front tends to move in quickly.
93
Occluded Front Two Fronts
94
(No Transcript)
95
Tornados can form out of mesocyclones.
96
Hurricane Mitch, Oct., 1998
97
(No Transcript)
98
Weather related disasters Flooding Yellow
River (China) 1931 (1-3.7 million) 1887 (1-2
million) 1332 (up to 7 million) Cyclone
Hurricanes Bangladesh Cyclone 1970
(500,000) India Cyclone 1839 (300,000) Typhoon
Nina (China) 1975 (229,000) (Included
catastrophic failure of the Banquio Dam most
died from ensuing epidemics) In Western Hem
Great Hurricane of 1780 (Caribbean) (22,000)
Hurr. Mitch (Honduras, Nicaragua) 1998
(18,277) For scale, Hurricane Katrina, 2005
(1836)
About PowerShow.com