Jules Verne Voyager: Venus Features Help

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Venus Features Help Index:


For more information about our Voyager map tool, contact:   Lou Estey   (louunavco.org)
Last modified: 17 Mar 2011



Overview    

See Getting Started for a quick overview of the Jules Verne Voyager map tool capabilities.

For items specific to voyaging Venus, continue to read this Venus Features Help page.

To learn how to use the grd, gmt, geo, lbl, vel, mon, msc, and/or opt codes to customize a starting view, see Advanced Help: URL customizing.


Voyager Venus features     The default Venus uses a texture underlay grid grd=1 showing a Magellan synthetic aperature radar (SAR) composite image (gaps filled with lower-resolution Pioneer-Venus Orbiter data or a constant mid-range value) with simulated surface color based on Soviet Venera 13 and 14 surface images.

The texture underlay grids available in the [Features:] menu of Voyager: Venus are:

[Magellan SAR + color]  http://jules.unavco.org/Venus grd = 1   see above (0.0714° resolution)
[Magellan SAR grey]  http://jules.unavco.org/Venus?grd=2 grd = 2   grey-tone Magellan SAR image (0.0714° resolution)
[Galileo (Jónsson)]  http://jules.unavco.org/Venus?grd=13 grd = 13   upper-level atmosphere, derived from Galileo Feb 1990 flyby images, by Björn Jónsson
[Radius (GTDR)]  http://jules.unavco.org/Venus?grd=9 grd = 9   planetary radius, derived from Magellan radar, GTDR dataset (0.044° resolution)
[Radius (smoothed)]  http://jules.unavco.org/Venus?grd=3 grd = 3   planetary radius, derived from Magellan radar, smoothed by spherical harmonic fit (1° resolution)
[Geoid]  http://jules.unavco.org/Venus?grd=6 grd = 6   geoid model, derived from Magellan orbit data, spherical harmonic fit (1° resolution)
[Geoid error]  http://jules.unavco.org/Venus?grd=8 grd = 8   geoid model error of above (1° resolution)
[Free air gravity]  http://jules.unavco.org/Venus?grd=5 grd = 5   free air gravity anomaly, derived from Magellan orbit data, spherical harmonic fit (1° resolution)
[Free air error]  http://jules.unavco.org/Venus?grd=7 grd = 7   free air gravity anomaly error of above (1° resolution)
[Bouguer gravity]  http://jules.unavco.org/Venus?grd=4 grd = 4   Bouguer gravity anomaly, derived from Magellan orbit data, spherical harmonic fit (1° resolution)
[Emissivity (GEDR)]  http://jules.unavco.org/Venus?grd=10 grd = 10   surface emissivity (ratio of radiant energy emitted by surface to that emitted by a blackbody at the same temperature), derived from Magellan radar, GEDR dataset (0.044° resolution)
[Reflectivity (GREDR)]  http://jules.unavco.org/Venus?grd=11 grd = 11   surface reflectity, derived from Magellan radar, GREDR dataset (0.044° resolution)
[Slope (GSDR)]  http://jules.unavco.org/Venus?grd=12 grd = 12   surface slope, derived from Magellan radar, GSDR dataset (0.044° resolution)

The standard image overlays available in the [Features:] menu for optional longitude and latitude marking or distance scale bars are explained Advanced Help: generic options.

Other image overlays for Voyager: Venus available in the [Features:] menu are:

[Region outlines] 
no thumbnail
image
geo = 8   border outlines of major geographic regions
[Region names] 
no thumbnail
image
lbl = 8   names of major geographic regions

The IAU gazetteer image overlays for Voyager: Venus available in the [Features:] menu under [--IAU gazetteer--] are:

[Impact outlines] 
no thumbnail
image
geo = 1   outlines of impact sites
[Impact names] 
no thumbnail
image
gaz = 1   impact site names
[Volcanism related] 
no thumbnail
image
gaz = 2   flow terrain and small domical mountains
[various regions] 
no thumbnail
image
gaz = 4   e.g. regio, labyrinthus, planatia
[Corona] 
no thumbnail
image
gaz = 8   ovoid-shaped features
[Mons & collis] 
no thumbnail
image
gaz = 16   mountains and small hills
[Dorsum] 
no thumbnail
image
gaz = 32   ridges
[Rupes] 
no thumbnail
image
gaz = 64   scarps
[Chasma] 
no thumbnail
image
gaz = 128   deep, elongated, steep-sided depressions
[Tessera] 
no thumbnail
image
gaz = 256   polygonal terrain
[Farrum] 
no thumbnail
image
gaz = 512   pancake-like structures
[Patera] 
no thumbnail
image
gaz = 1024   irregular or scalloped shaped crater
[Linea] 
no thumbnail
image
gaz = 2048   elongate markings
[Unda (dunes)] 
no thumbnail
image
gaz = 4096   dune or dune fields
[Fossa & vallis] 
no thumbnail
image
gaz = 8192   long narrow depressions and valleys

The image overlays available in the [Missions:] menu (background material at Planetary Missions) are:

[site labels] 
no thumbnail
image
lbl = 1   names of all selected missions included on zoomed-in maps
[ancillary site data] 
no thumbnail
image
lbl = 2   (currently) dates of all selected missions included on zoomed-in maps
[USSR Venera sites]  http://jules.unavco.org/Venus?mon=1 mon = 1   sites of USSR Venera landings
[USA Pioneer Venus sites]  http://jules.unavco.org/Venus?mon=2 mon = 2   sites of USA Pioneer Venus atmospheric probe landings or impacts
[USSR Vega sites]  http://jules.unavco.org/Venus?mon=4 mon = 4   sites of USSR Vega landers

Note: Any grd, gmt, geo, lbl, vel, mon, msc, or opt code might change in the future, so be sure to check here for the current values!



Comments, questions, problems about Jules Verne Voyager? Send mail to   Lou Estey   (louunavco.org)


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Jules Verne Voyager: Venus Features Help last modified on Thu, 17 Mar 2011 19:07 UTC
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