Mammoth Caves National Park, Kentucky - PowerPoint PPT Presentation

Loading...

PPT – Mammoth Caves National Park, Kentucky PowerPoint presentation | free to download - id: 15fb14-ZDc1Z



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Mammoth Caves National Park, Kentucky

Description:

Mammoth Caves National Park, Kentucky ... Vegetation growing on the sandbars ... increased from the last as more trees are now inundated with flood waters ... – PowerPoint PPT presentation

Number of Views:58
Avg rating:3.0/5.0
Slides: 39
Provided by: southa1
Category:

less

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

Title: Mammoth Caves National Park, Kentucky


1
Mammoth Caves National Park, Kentucky
  • A collection of webcams of the Green River
    showing changes that occur on the landscape scale
    throughout a year (from July 2007 to June 2008)

Teachers version Includes narrative indicating
what changes are visible between webcam images.
2
  • Vegetation growing on the sandbars in the river
  • Little distinction can be made between the
    different tree species during the summer.
  • Trees that frame the webcam are deciduous but
    other species are presently indistinguishable.
  • Sandbar outlined to show the change in size over
    next several slides, indicating a change in the
    discharge

3
  • Vegetation continues to grow on the sandbars
  • Outlined sandbar is less exposed, indicating a
    rise in the water level (increase in discharge)
  • River color is still the same as the last image
    river sediment has not changed

4
  • The sandbars in the river are at their greatest
    extent river water level (discharge) is low
  • Trees growing on the right slope are in the
    beginning stages of changing color
  • Some haze in sky (notice clearness on next slide)

5
  • Black line drawn on river marks the extent of the
    sandbar on the previous slide

6
Leaves are starting to change
7
Distinct leave color change
8
  • Vegetation on sandbar has changed to a brownish
    green color, another indication of the changing
    seasons

Noticeable differences in color
Water level as indicated by the bank
9
  • 4 days after the last image
  • Heavy amounts of sediment in river - evidenced by
    rich brown color

Water level
10
  • Water level dropped bank edge is visible
    (arrow)
  • Less sediment in river color returning to a
    greenish hue

11
  • Change of seasons makes it easier to see the
    complex series of slopes (drawn with black lines)
    within the valley
  • Water level continues to drop bank edge
  • Re-emergence of sand bar in river, indicating
    drop in water level
  • Bare trees evident

12
  • Continued water level drop and emergence of
    secondary sand bar

Note different species of trees, based on leaf
color
13
  • Increase in water level, gravel bars immersed
  • Deep red and orange leaves are most prominent now

14
Near absence of deciduous leaves remaining on
trees
15
Evergreen trees are only trees left with leaves
16
(No Transcript)
17
(No Transcript)
18
  • The river is noticeably greener indicating less
    sediment
  • Gravel bars are also re-emerging

19
  • River flooding with a high sediment load caused
    the river to turn a sandy brown color
  • The river is out of its bank with tree trunks in
    the water

20
The extent of the flooding increased from the
last slide as more trees are now inundated with
flood waters
21
A light covering of snow on the ground
illustrates the extent of the flood
22
  • 15 days after the last image
  • Flood waters have decreased
  • River is returning to a green hue

23
(No Transcript)
24
A heavier snowfall this time again indicating
the extent of flooding
25
The greatest flood event witnessed over a 12
month period with the flood waters at its
greatest extent out of its banks
26
  • Receding flood waters and a return of the natural
    color of the river
  • A slight trace of spring green up can be found
    (arrow)

27
  • River is flooding again
  • Spring green-up has begun
  • Note the budding of the tree in the foreground
    over the next several images (arrow)

28
(No Transcript)
29
(No Transcript)
30
(No Transcript)
31
Pink buds are fading, to be replaced with leaves
over the next several images
32
  • Gravel bars just beneath surface, general outline
    visible

33
  • Re-emergence of gravel bars

34
  • Submergence of gravel bars due to flooding
  • Note high sediment load of river, evident from
    water color

35
The camera angle was adjusted slightly between
May 3rd and May 6th (this webcam image). The
flood waters have receded slightly (bank is
visible (right arrow) Tree in foreground
continues to leaf-out (left arrow).
36
Evidence of a recent flood is no longer visible
in this image the river is, once again, a
greenish hue, the bank is visible, and sand bars
in the middle of the river are slowly being
exposed
37
(No Transcript)
38
The extent of sandbar exposure is similar to last
years webcam image, indicating it is probably
normal in the summer months
About PowerShow.com