Buttes and Knobs in =
Cydonia=20
Region (PSP_005924_2210)
Credit: NASA/JPL/University =
of=20
Arizona=20
The Cydonia region on Mars is located in =
Arabia Terra=20
at the boundary between the Northern lowlands and Southern =
highlands. This=20
region gained notoriety when Viking imaged a landform that looked =
like a=20
face.
The =93face=94 has subsequently been imaged by many =
orbiters,=20
including HiRISE (=20
PSP_003234_2210), showing that it is simply a rocky =
mound,=20
and the face-like appearance was due to a trick of shadows. This=20
observation was taken of a region slightly to the southwest of =
that=20
landform.
This region is characterized by knobs and buttes. =
Knobs=20
are rounded hills and buttes are hills with steep vertical sides =
and a=20
flat top. A butte is similar to a plateau, but smaller in scale. =
These are=20
features that are resistant to erosion, and there are several ways =
that=20
such features may become more resistant than the surrounding =
areas. They=20
can be plutonic intrusions or volcanic rocks that are more =
resistant rock=20
types than the surrounding sedimentary rock. Alternatively, these =
regions=20
may be resistant because they have been cemented by water carrying =
dissolved ions that precipitate as minerals binding the sediment =
together.=20
Either way, they provide important information about the geologic =
history=20
of the region.
Of note in this image is the interesting=20
pitted and patterned ground. This pitting may have =
resulted=20
from the sublimation of interstitial ice. (Sublimation is a =
process by=20
which a solid form turns directly to a gas.) Patterned ground is =
common=20
throughout the northern mid-latitude plains.
| OBSERVATION TOOLBOX =
|
| Acquisition=20
date: |
01 November 2007 |
Local Mars=20
time: |
2:03 PM |
| Latitude=20
(centered): |
40.5 =B0 |
Longitude=20
(East): |
350.1 =B0 |
| Range to target=20
site: |
301.8 km =
(188.6=20
miles) |
Original image=20
scale range: |
30.2 cm/pixel
(with 1 =
x 1=20
binning) so objects ~91 cm across=20
are resolved |
| Map =
projected=20
scale: |
25 cm/pixel and =
north is=20
up |
Map =
projection: |
EQUIRECTANGULAR |
| Emission=20
angle: |
4.7 =B0 |
Phase angle: |
60.1 =B0 |
| Solar incidence=20
angle: |
57 =B0, with the Sun about 33 =B0 above the=20
horizon |
Solar=20
longitude: |
340.1 =B0, Northern Winter |
| For =
non-map=20
projected products: |
| North azimuth: |
97 =B0 |
Sub-solar=20
azimuth: |
313.3 =B0 |
| For =
map projected=20
products: |
| North=20
azimuth: |
270=B0 |
Sub =
solar=20
azimuth |
127.675=B0 | |
|
JPEG PRODUCTS
Full=20
image (grayscale, map projected)
Full=20
image (grayscale, non-map projected)
IRB=20
color (map projected)
IRB=20
color (non-map projected)
RGB=20
color (non-map projected)
JP2 QUICKLOOK (IAS Viewer)
Full=20
image (grayscale, map projected)
Full=20
image (grayscale, non-map projected)
IRB=20
color (map projected)
IRB=20
color (non-map projected)
RGB=20
color (non-map projected)
JP2 QUICKLOOK (Download)
Full=20
image (grayscale, map projected)
(387.9 MB)
Full=20
image (grayscale, non-map projected)
(301.3 MB)
IRB=20
color (map projected)
(134.2 MB)
IRB=20
color (non-map projected)
(203.7 MB)
RGB=20
color (non-map projected)
(217.3 =
MB)
JP2 PRODUCTS (Download)
Full=20
image (grayscale, map projected)
(801.4 MB)
IRB=20
color (map projected)
(339.1 MB)=20
....................
IMAGE PRODUCT=20
INFORMATION
Grayscale=20
label description
Color=20
product label
EDR=20
products
SUBIMAGES IN THIS =
OBSERVATION
(627KB)
SCIENCE =
THEME
Fluvial=
=20
Processes
RESOURCES
About =
color=20
products (PDF)
IAS Viewer =
help
HiRISE =
Online=20
Image Viewer
WALLPAPER
800x600
1024x768
1152x864
1280x960
1440x1080
1600x1200
1920x1440
2048x1536
2560x1600
REFERENCE =
SHEET
|
![3D"The](3D"http://hirise.lpl.arizona.edu/images/2007/labanniere_02.jpg"=20)
![3DHome=20](3D"http://hirise.lpl.arizona.edu/images/2007/navbar/home.jpg"=20)
![3D"New](3D"http://hirise.lpl.arizona.edu/images/2007/navbar/new.jpg"=20)
![3DCatalog=20](3D"http://hirise.lpl.arizona.edu/images/2007/navbar/catalog.jpg"=20)
![3D"Science](3D"http://hirise.lpl.arizona.edu/images/2007/navbar/sim.jpg"=20)
![3DFAQ=20](3D"http://hirise.lpl.arizona.edu/images/2007/navbar/faq.jpg"=20)
![3DHiBLOG=20](3D"http://hirise.lpl.arizona.edu/images/2007/navbar/hiblog.jpg"=20)
![3DOutreach=20](3D"http://hirise.lpl.arizona.edu/images/2007/navbar/mars.jpg"=20)
![3DMobile=20](3D"http://hirise.lpl.arizona.edu/images/2007/navbar/mobile.jpg"=20)
![3DTools=20](3D"http://hirise.lpl.arizona.edu/images/2007/navbar/tools.jpg")
![3DSearch=20](3D"http://hirise.lpl.arizona.edu/images/2007/navbar/search.jpg"=20)