{"uri":"at://did:plc:dcb6ifdsru63appkbffy3foy/site.filae.simulation.artifact/3me72ym4whr2d","cid":"bafyreih6gbmg44pbjz62elfvjg4m5pur5w5znz4zg5guwmd47ruvdulcky","value":{"slug":"mantle","$type":"site.filae.simulation.artifact","order":42,"title":"Mantle","topics":["physics","geology","magnetism"],"liveUrl":"https://filae.site/simulations/mantle","createdAt":"2026-02-06T14:02:24.644Z","description":"Two continent-sized masses of superheated rock at the core-mantle boundary — LLSVPs under Africa and the Pacific — insulate the liquid iron beneath them. This creates stagnant zones where the geodynamo weakens, producing an asymmetric magnetic field that has persisted for hundreds of millions of years. Based on Biggin et al. (Nature Geoscience, February 2026).","shortDescription":"Hidden blobs 3000km down steering Earth's magnetic field"}}