Related by context. Frequent words. (Click for all words.) 59 Weddell Sea 59 lithosphere 58 Ross Ice Shelf 58 Greenland glacier 55 Gusev crater 54 subglacial 54 oceanic crust 53 Antarctic glaciers 53 icecap 53 crustal 53 glacier 53 polar vortex 53 icy crust 52 magma chamber 52 Antarctica 52 equatorial waters 52 polar 52 deglaciation 52 tundra 51 martian soil 51 polar craters 51 basalt rock 51 lunar craters 51 Antarctic 50 Lake Vostok 50 permafrost 50 lunar soil 50 subarctic 50 Svalbard archipelago 50 martian surface 50 cryosphere 50 lava tubes 50 floe 50 temperature gradient 50 corrugations 50 Earth crust 50 Arctic permafrost 50 McMurdo Sound 49 Antarctic ice 49 biogeochemical 49 marine sediments 49 continental crust 49 ice 49 Cape Royds 49 northerly trending 49 upper troposphere 49 rock outcrop 49 glacial till 49 landmasses 49 seabed 49 igneous rocks 48 hydrothermal fluids 48 icecaps 48 foliation 48 foraminifera 48 Tasman Glacier 48 jarosite 48 poleward 48 temperature gradients 48 equatorial Pacific Ocean 48 erosional 48 Arctic Ocean 48 Dry Valleys 48 Namib Desert 48 transect 48 undersea volcanoes 48 Spitzbergen 48 clathrates 47 glacial ice 47 volcanic cone 47 Nordkapp 47 Martian dust 47 meteor impacts 47 Wilkins Ice Shelf 47 hydrologic cycle 47 hummocks 47 seafloor 47 sediment cores 47 glacial 47 ANDRILL 47 plate tectonics 47 hydrothermal vent 47 Valles Marineris 47 fiords 47 Greenland 47 Spitsbergen 47 Antarctic peninsula 47 Alaskan tundra 47 geochemical samples 47 IODP 47 tropopause 47 talus 47 mesosphere 47 quartz monzonite 47 clastic 47 magnetic reconnection 47 depositional 47 ellipsoid 47 subduction 47 termite mounds 47 glaciations