Debra M. Hurwitz
James W. Head
20120824
Geologic Map of the Snegurochka Planitia Quadrangle (V-1), Venus
vector digital data
Reston, VA
U. S. Geological Survey
https://pubs.usgs.gov/sim/3178/
U.S. Geological Survey Scientific Investigations Map
SIM 3178
The Snegurochka Planitia region (V-1) is a predominantly low-lying terrain that covers the north polar region of Venus, extending from 75oN to 90oN and from 0oE to 360oE. The plains associated with Snegurochka Planitia abut the highlands of Metis Regio to the south from approximately 240oE to 300oE (V-6) and the highlands of Ishtar Terra to the south from approximately 300oE to 60oE (Lakshmi Planum, V-7; Fortuna Tessera, V-2). The plains of Louhi Planitia also lie within the V-1 region and form the northern border with the highlands of Tethus Regio from approximately 60oE to 120oE (V-3) and with the lowlands of both Atalanta Planitia (V-4) and the nearby deformed region containing a series of ridged belts (V-5) from approximately 120oE to 240oE. The plains generally lie between +500 m and -500 m of the mean planetary radius (MPR) of 6051.8 km, with the highest terrain in the region, the northernmost extent of Ishtar Terra (Itzpapalotl Tessera, 75oN, ~315oE), rising more than 6.4 km above MPR.
To develop a geologic map for the V1 Venus quad
None planned
360
0
90
75
NASA
Geology
Structure
Volcanic
synthetic aperture radar (SAR)
Magellan SAR
Topography
Gazetteer of Planetary Nomenclature
Venus, Snegurochka Planitia
None
None
Hurwitz, D.M., and Head, J.W., 2012, Geologic map of the Snegurochka Planitia quadrangle (V–1), Venus: U.S. Geological Survey Scientific Investigations Map 3178, pamphlet 28 p., 1 sheet, scale 1:5,000,000. (Available at https://pubs.usgs.gov/sim/3178/ )
Unclassified
ESRI ArcMap 9.3
19890701
Spaceborne radar observations—A guide for Magellan radar-image analysis
satellite
Spaceborne radar observations—A guide for Magellan radar-image analysis
Mapping was completed using data collected by the synthetic aperture radar (SAR) aboard the Magellan spacecraft. The Magellan SAR instrument operated at a wavelength of 12.6 cm (S-band) with horizontal and parallel transmit/receive polarization that allowed for cloud penetration and for discrimination of wavelength-scale surface roughness.
Geologic units and boundary relations are mapped using mosaics of full-resolution Magellan synthetic aperture radar (SAR) F-MIDR, F-Map, and C1-MIDR data loaded into ArcGIS mapping software at a scale of 1:5 million. Digital versions of Magellan altimetry data are also used to analyze the geology within Snegurochka Planitia (V–1).
Vector
GT-polygon composed of chains
2197
GT-polygon composed of chains
3
String
15806
Entity point
3291
String
12
String
18288
GeoUnits
Geologic Units
USGS
DataGaps
Area of no image coverage
USGS
GeoContacts
Contacts as defined as certain, approximate or gradational
USGS
LocationFeatures
features representing shields, steep-sided dome, or crater central peaks
USGS
Channels
feature mapped as a channel
USGS
LinearFeatures
linear features representing wrinkle ridges, simple ridges, lineament, or crater rims
USGS
USGS Publications
Astrogeology Science Center
See access and use constraints information.
File Geodatabase Feature Dataset
9.3
https://pubs.usgs.gov/sim/3178/
None
20120827
20120827
USGS
Trent Hare
GIS Manager
physical
2255 North Gemini Drive
Flagstaff
AZ
86001
US
thare@usgs.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
None