MSL ArcGIS Map
Version 1
January 2011

An ArcGIS map was generated for each candidate Mars Science Laboratory (MSL) 
landing site. The maps and the data layers included are in an equirectangular 
projection centered at 0 degree longitude and the center latitude of each 
landing ellipse. Most of the data used in the map including both standard PDS 
products and special products can be accessed through MSL Orbital Data 
Explorer (ODE) website at the following link. 
http://odetest.rsl.wustl.edu/ode_landing_site/indexProductSearch.aspx. 

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Data Sources
Footprint shape files: http://ode.rsl.wustl.edu/mars/indextools.aspx 
Shaded relief maps and landing ellipses from Jet Propulsion Laboratory (JPL).
CRISM IR/VNIR browse images: http://crism.jhuapl.edu/msl_landing_sites/#label1
THEMIS mosaics: 
    http://astrogeology.usgs.gov/Projects/MSL/
    http://themis.asu.edu/landingsites/
    http://webgis.wr.usgs.gov/msl/


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Map File Names
Eberswalde_crater_maps.zip
Gale_crater_maps.zip
Holden_crater_fan.zip
Mawrth_Vallis_site2_maps.zip    

----Projection----
All datasets are formatted as
Projection: Equirectangular 
Central Meridian (clon) = 0
Standard Parallel (clat) = center latitude of each landing ellipse at 
                           the candidate MSL landing sites (see delow)

Center of each landing ellipse for candidate MSL landing sites [1]
Landing Site               Lat()     Lon[0, 360]()
Eberswalde Crater         -23.86         326.73
Gale Crater               -4.49          137.42
Holden Crater             -26.37         325.1
Mawrth Vallis(2)          24.01          341.03

Coordinates System = Planetocentric (Areocentric)
                     relative to IAU2000 reference frame 
Positive Longitude Direction = East  
Major Axis = 3396190.0 m 
Minor Axis = 3396190.0 m   

----Footprint Shape Files----
Footprints were added for: MRO HiRISE red and color images, MRO CRISM TRDR data, 
and MRO CTX EDR data covering the four candidate MSL landing sites. More 
shape files could be added upon user request.

The landing ellipse layers use the revised parameters listed below. The maps 
will be updated when the new ellipse parameters are released in 2011.
  
Center of each landing ellipse for candidate MSL landing sites [2]
Landing Site             Lat()        Lon[0, 360]()
Eberswalde Crater       -23.8953         326.7426
Gale Crater             -4.4868          137.4239
Holden Crater           -26.4007         325.1615
Mawrth Vallis(2)        23.9883          341.0399
*notes: All the coordinates in this file are areocentric and relative to IAU2000 
reference frame.

----Raster Images----
CRISM IR/VNIR browse images were downloaded from CRISM team website, 
http://crism.jhuapl.edu/msl_landing_sites/browse/Holden_Crater_Fan/index.php. 
Map projection parameters were read from the image label and added into the 
*.tfw world file. All of the CRISM browse data are in equirectangular projection 
centered at 0 longitude and the center latitude of each old landing ellipse [1]. 
Original crism images are saved in png format. They were output to tif format 
images because ArcGIS has a bug in 9.3.1 version. ArcGIS 9.3.1 can not read 
the correct map projection information from the png format raster images, but 
it works well with the tif format images.             

The basemap includes THEMIS daytime IR, night-time IR, Qualitative Thermal Inertia,
VIS data and MGS MOLA/MEX HRSC shaded relief maps.

The original THEMIS images were created by Robin Fergason and the THEMIS Team. 
These images were in Equidistant Cylindrical (Simple Cylindrical) projection 
centered at 180 longitude and 0 latitude. The THEMIS data were re-projected 
into the same coordinate systems as the CRISM IR/VNIR browse images. After 
re-projection, the THEMIS data were also moved horizontally (x and y direction) 
in order to match with the features in the CRISM IR/VNIR images.

Two shaded relief maps were created at JPL. One was generated using the MEX HRSC
DTM (~75m/pixel) with its 12m/pixel visible orthophoto draped over it. The other 
used MOLA with THEMIS daytime IR product draped over it. The shaded relief maps 
was originally delivered in Equidistant Cylindrical projection centered at 0 
latitude and 0 longitude. The maps were re-projected into the same coordinate 
systems as the CRISM IR/VNIR browse images at PDS Geosciences Node. The 
re-projected shaded relief maps were moved slightly in the horizontal direction 
(x and y direction) in order to match with the features in the CRISM IR/VNIR 
images and THEMIS mosaics. The registration will not always be perfect between 
the layers at these resolutions.  

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Using ArcGIS Maps
1) copy or download the "*.zip" files to your hard drive.
2) unzip the files.
3) Run "*.mxd" by double click, or open directly in Arcmap, currently supported 
   by Arcmap 10 (*_AGS10.mxd) and Arcmap 9.3.1 (*_AGS931.mxd)

----Note----
In ArcMap, you can access the PDS products using the attribute information saved in 
footprint shape file through the following two methods. 
Method 1: use the Hyperlink tool in ArcMap to click the interested shape polygons
in the map directly. A web browser will be opened automatically and linked to the 
ODE data product search page.                                                  
Method 2: copy the url from the shape attribute table and open it in any web browser.
  1) in the opened *.mxd file, in the left TOC window, select the shape file, 
  right click, and select "Open Attribute Table", 
  2) in the pop-up attribute dialog, find the field named "ProductURL",
  you can copy the url link in the table by right click and selecting copy, 
  3) paste the url in a web browser, you can view the product directly in the 
  ODE data product search page. 

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Reference
[1] Golombek M., J. Grant, A.R. Vasavada, J. Grotzinger, M. Watkins, D. Kipp, 
    E. Noe Dobrea, J. Griffes, and T. Parker, 2009, Selection of Four Landing 
    Sites for the Mars Science Laboratory, LPSC XL, 2009, Abstract #1404.
(http://marsoweb.nas.nasa.gov/landingsites/msl2009/memoranda/MSL_Site_Selection_March2009.pdf)
[2] Golombek, M., J. Grant, A.R. Vasavada, J. Grotzinger, M. Watkins, D. Kipp, 
    E. Noe Dobrea, J. Griffes, and T. Parker, 2011, Final Four Landing Sites 
    for the Mars Science Laboratory, LPSC 2011 March.
    
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Contact
June Wang
wang@wunder.wustl.edu
http://geo.pds.nasa.gov/

Washington University in St. Louis
Campux Box 1169
Department of Earth and Planetary Sciences
St. Louis, MO 63130
(314) 935-7033
