🪨 地质学与地球科学

Seismic WavesP-waves and S-waves race through Earth's layers after an earthquake, carving out the… Volcanic Eruption SimulatorControl magma viscosity, gas content and pressure to trigger explosive or effusive… Plate TectonicsDivergent, convergent and transform plate boundaries with earthquakes, subduction and… Seismic Wave Propagation — P-waves, S-waves & Shadow ZoneNewP-wave and S-wave rays refract through Earth's crust, mantle and core via Snell's law,… Glacier DynamicsAdjust snowfall, temperature and bed slope to see ice flow under Glen's law, watch the… Volcano EruptionNewRaise chamber pressure and magma viscosity to decide whether the volcano oozes lava or… Rock CycleNewFollow a single rock as heat, pressure, weathering and melting turn it from igneous to… Sand DuneNewBlow wind across a sand bed and watch grains saltate, dunes migrate downwind and vegetation… Groundwater FlowPump a well in a confined or unconfined aquifer and watch Darcy's law draw down the water… River Delta FormationNewA river meeting still water drops coarse sediment first and fine sediment further out,… Snow AvalancheNewA slab avalanche fires when stability = strength/stress drops below 1, a fracture races… Coastal ErosionNewWaves approaching at an angle drive longshore drift, eroding headlands and building beaches… River MeandersNewCurvature-driven erosion turns a slight wiggle into deep meanders, until necks pinch off… Landslide DynamicsNewTune cohesion, friction angle, slope angle and pore pressure on an infinite slope, then… Permafrost ThawNewSet annual and summer air temperatures, thermal conductivity and latent heat, then animate a… Wind ErosionNewSet wind friction velocity, grain size and soil moisture, then watch sand transport erupt… Sandstone FormationNewSet burial depth, temperature, initial porosity and grain size, then watch cementation… Earthquake FaultNewSet loading rate, friction and fault area on a stick-slip fault, then watch stress build and… Sand Dune FormationBarchan dune migration via saltation cellular automaton — Werner model, avalanche dynamics.