Ice 23,614 Ice accretion 1,645 Ice air interface 998 Icebergs 2,455 Ice bottom surface 522 Icebound rivers 447 Icebreakers 2,592 Ice breaking 1,880 Ice breakup 1,418 Ice caps 1,165 Ice composition 1,351 Ice conditions 4,323 Ice control 1,066 Ice cores 4,978 Ice cover 4,678 Ice cover distribution 1,250 Ice cover effect 2,548 Ice cover strength 1,404 Ice cover thickness 4,656 Ice cracks 730 Ice creep 673 Ice crystal growth 1,307 Ice crystal optics 585 Ice crystals 1,604 Ice crystal structure 2,147 Ice dams 439 Ice dating 521 Ice deformation 1,725 Ice detection 1,222 Ice edge 1,444 Ice elasticity 441 Ice electrical properties 775 Ice floes 1,253 Ice forecasting 1,940 Ice formation 3,821 Ice friction 631 Ice growth 1,181 Ice heat flux 453 Ice jams 1,457 Ice lenses 433 Ice loads 5,066 Ice mechanics 3,878 Ice melting 1,798 Ice models 1,621 Ice movement 3,782 Ice navigation 3,870 Ice nuclei 981 Ice optics 480 Ice physics 2,204 Ice pressure 2,046 Ice prevention 1,141 Ice rafting 922 Ice removal 1,233 Ice reporting 597 Ice sheets 8,405 Ice shelves 1,958 Ice solid interface 2,457 Ice spectroscopy 472 Ice streams 770 Ice strength 1,447 Ice structure 1,214 Ice sublimation 493 Ice surface 894 Ice surveys 2,596 Ice temperature 879 Ice volume 515 Ice water interface 2,562 Ice wedges 897 Icing 1,093 Icy satellites 463 IGCP 461 Igneous rocks 3,495 Image processing 818 Imagery 1,282 Impact strength 602 Impurities 615 Indicators 658 Industrial buildings 472 Information management 636 Information systems 1,279 Infrared methods 593 Insecta 478 In situ 544 Insolation 526 Instruments 2,479 Interglacial environment 1,974 International cooperation 2,827 International Polar Year 2007-08 720 Interpretation 926 Intrusions 1,026 Invertebrata 6,458 Ionosphere 890 Ions 607 IPY 2007-08 Research Publications 464 Iron 798 Isostasy 647 Isostatic rebound 724 Isotope analysis 637 Isotope ratios 5,028 Isotopes 10,777