منابع مشابه
Bayes Networks on Ice: Robotic Search for Antarctic Meteorites
A Bayes network based classifier for distinguishing terrestrial rocks from meteorites is implemented onboard the Nomad robot. Equipped with a camera, spectrometer and eddy current sensor, this robot searched the ice sheets of Antarctica and autonomously made the first robotic identification of a meteorite, in January 2000 at the Elephant Moraine. This paper discusses rock classification from a ...
متن کاملPutting life on ice: bacteria that bind to frozen water
Ice-binding proteins (IBPs) are typically small, soluble proteins produced by cold-adapted organisms to help them avoid ice damage by either resisting or tolerating freezing. By contrast, the IBP of the Antarctic bacterium Marinomonas primoryensis is an extremely long, 1.5 MDa protein consisting of five different regions. The fourth region, a 34 kDa domain, is the only part that confers ice bin...
متن کاملALASKA SHOREFAST ICE: INTERFACING GEOPHYSICS WITH LOCAL SEA ICE KNOWLEDGE AND USE By
This thesis interfaces geophysical techniques with local and traditional knowledge (LTK) of indigenous ice experts to track and evaluate coastal sea ice conditions over annual and interannual timescales. A novel approach is presented for consulting LTK alongside a systematic study of where, when, and how the community of Barrow, Alaska uses the ice cover. The goal of this research is to improve...
متن کاملReassessing the Organic Content of Antarctic Ice and Meteorites
Martins, C. Emmenegger, J. P. Dworkin, D. P. Glavin, R. P. Harvey, R. Zenobi, J. L. Bada and P. Ehrenfreund, Goddard Center for Astrobiology, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA ([email protected]), Goddard Earth Sciences and Technology Center, University of Maryland Baltimore County, 5523 Research Park Drive, Baltimore, MD 21228, USA, Astrobiology Laboratory, L...
متن کاملGeophysical characterization of fractured rock aquifers: Accounting for scale effects and putting hydrology in the geophysics
Characterization of fractured-bedrock aquifers is one of the most difficult problems in hydrogeology. Successful characterization of aquifers at the site scale requires the effective integration of the three basic tools at our disposal: 1) surface geophysical soundings provide full non-destructive coverage of the aquifer volume but are generally ambiguous in interpretation and fail to identify ...
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ژورنال
عنوان ژورنال: Science
سال: 2003
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.302.5646.747a