Other
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufm.p11b1043g&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #P11B-1043
Other
5400 Planetology: Solid Surface Planets, 5464 Remote Sensing, 5470 Surface Materials And Properties, 6225 Mars
Scientific paper
Identifying and mapping areas of hydrothermal alteration on Mars are important parts of understanding the water cycle on that planet. The summit of Mauna Kea, Hawaii, provides an environment that exhibits hydrothermal alteration within a volcanic terrain that may be analogous to Mars. Hydrothermal alteration zones exposed on Mauna Kea cinder cones have been mapped using AVIRIS hyperspectral imaging data, which has 10-nm spectral band widths between 0.4 and 2.5 micrometers and a ground resolution of about 15 m. Mapped alteration minerals on Mauna Kea include kaolinite, montmorillonite, saponite, hematite, and jarosite. These altered areas have been observed on cinder cones with basal diameters from 500 m to about 1 km, with exposures of altered material being between 50 to 400 m. As a test of the likelihood that similar alteration zones will be detectable on Mars by the OMEGA spectrometer on Mars Express or the CRISM imaging spectrometer on Mars Reconnaissance Orbiter, AVIRIS data of Mauna Kea have been resampled to match spatial resolutions of these instruments and then analyzed to search for the same alteration minerals found in the full-resolution data. At the resolution of the CRISM multispectral mapping mode (200 m/pixel), most of the Mauna Kea altered zones are still identifiable even though the strength of absorption features are somewhat reduced. Even at the 300-500 m/pixel resolution expected for OMEGA observations, the larger altered zones on Mauna Kea are still discernible. Several researchers have identified regions throughout the northern and southern plains on Mars containing numerous km-sized cones that are thought to be volcanic in origin. Thus, regions on Mars containing km-sized cones would be ideal places to target with OMEGA and CRISM observations to search for hydrothermal alteration zones where fractures and mass wasting might have exposed and dispersed any altered materials, making them more detectable by OMEGA and CRISM.
Arvidson Ray E.
Deal Kim S.
Graff Trevor G.
Guinness Edward A.
Jolliff Brad L.
No associations
LandOfFree
Mapping Hydrothermal Alteration Zones on Mauna Kea Using AVIRIS Data: An Analog for Mars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Mapping Hydrothermal Alteration Zones on Mauna Kea Using AVIRIS Data: An Analog for Mars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mapping Hydrothermal Alteration Zones on Mauna Kea Using AVIRIS Data: An Analog for Mars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1424954