Ice 20,959 Ice accretion 1,684 Ice air interface 1,081 Icebergs 2,448 Ice bottom surface 547 Icebound rivers 454 Icebreakers 2,600 Ice breaking 1,887 Ice breakup 1,474 Ice caps 931 Ice--Chemistry 474 Ice composition 1,901 Ice conditions 4,463 Ice control 1,075 Ice cores 5,438 Ice--Cores 668 Ice cover 4,668 Ice cover distribution 1,233 Ice cover effect 2,836 Ice cover strength 1,423 Ice cover thickness 4,881 Ice cracks 749 Ice creep 799 Ice crystal growth 1,326 Ice crystal optics 593 Ice crystals 1,621 Ice crystal structure 2,228 Ice dams 504 Ice dating 693 Ice deformation 1,886 Ice density 475 Ice detection 1,282 Ice edge 1,600 Ice electrical properties 826 Ice floes 1,269 Ice forecasting 1,964 Ice formation 3,968 Ice friction 648 Ice growth 1,292 Ice heat flux 499 Ice jams 1,469 Ice lenses 535 Ice loads 5,159 Ice mechanics 4,135 Ice melting 2,030 Ice models 1,833 Ice--Models 576 Ice movement 2,812 Ice navigation 3,879 Ice nuclei 983 Ice optics 500 Ice physics 2,318 Ice pressure 2,110 Ice prevention 1,144 Ice rafting 910 Ice removal 1,232 Ice reporting 604 Ice scoring 584 Ice sheet 619 Ice sheets 8,479 Ice shelves 2,098 Ice solid interface 2,712 Ice spectroscopy 501 Ice streams 616 Ice strength 1,503 Ice structure 1,343 Ice sublimation 557 Ice surface 966 Ice surveys 2,662 Ice temperature 1,008 Ice thermal properties 468 Ice volume 690 Ice water interface 2,790 Ice wedges 877 Icing 1,101 Igneous rocks 1,660 Image processing 927 Imagery 1,052 Impact strength 617 Impurities 765 Industrial buildings 477 Information management 624 Information systems 1,219 Infrared methods 532 Insolation 589 Instruments 2,100 Interglacial environment 1,608 International cooperation 2,850 International Polar Year 2007-08 721 Intrusions 473 Invertebrata 4,816 Ionosphere 868 Ions 576 IPY 2007-08 Research Publications 465 Iron 639 Isostasy 697 Isostatic rebound 600 Isotope analysis 1,340 Isotope ratios 4,244 Isotopes 7,706