aerosol agriculture airborne aircraft air pollution alaska algae alluvial alps andes animals antarctica apennines arctic arctic ocean arid soils arizona art ash atlantic ocean atmosphere atmospheric atmospheric monitoring atmospheric optics aurora aurora borealis australia austria autumn avalanche badlands baikal lake basalt beach biodiversity biomass burning birds blue calcite calcium carbonate caldera california canada canyon carbon cycle carboniferous cave caves cirrus citizen observations clay cliff climate climate change cloud clouds coast coastal coastal erosion cold soils color colour columnar basalt crater crevasse cropped soil cultural heritage cumulonimbus clouds cumulus danube delta dead dead sea delta deposits desert drone drought dune dunefield dust dyke earth earthquake #earthsciweek ecosystem egu16 egu17 environment erosion eruption etna evaporation fault field fieldwork fire fjord flood flower flysch fog fold folded layers forest forest fire forest soil fossil frost frozen fuegored full moon fumarole geology geomorphology geophysics geothermal geothermal area germany geyser glacial lake glacial landscape glacier glaciers glacier tongue gorge grand canyon granite graphic gravity waves great salt lake greenland gully erosion harz high mountains himalaya hot spring hydrology ice iceberg ice cap ice cave ice cores iceland ice sheet india indonesia ireland iron irrigation island israel italy kamchatka karst laboratory lagoon lake lake surface landscape landslide lava lava flow layers lena river delta lenticular lichen lichens light lightning limestone limnogeology limnology macro magma manganese oxide marble mediterranean mediterranean soils meeting melt meltwater metamorphism microbiotic crusts microscopy milky way mine mineral minerals mining moon moraine morocco moss mountain mountains mountain soils national park natural hazard natural hazards natural science nature new zealand northern lights norway ocean olivine oman organic matter outcrop pacific ocean paleoclimate paleosoil peat peatland penguin people peridotite permafrost peru petrography plant pollution pyrenees quartz rain rainbow rainforest reflection river road rock rocks rocky mountains romania russia saline-groundwater salt salt dome sand sandstone sarek scotland sea sea ice sediment sedimentary rocks shale siberia sinkhole sky snow soil soil aggregation soil biology soil erosion soil profile soils soil structure soil taxonomy soil texture soil water soil water repellency southern ocean spain speleology speleotherm splash spring stalactite stone stones storm stratigraphy stratocumulus stream strombolian eruption structural geology structure students sun sunlight sunrise sunset svalbard sweden switzerland taiwan tectonics terra rossa thrust thunderstorm tibetan plateau travel tree trees tundra unconformity urban usa utah valley vegetation visibility volcanic bomb volcanic landscape volcanic rock volcanism volcano volcanology water waterfall waves weather weathering white wildfire wildlife wind wind erosion winter yellowstone