{"id":"S85129617","label":"Sudden ionospheric disturbances","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85129617","normalized_label":"sudden ionospheric disturbances","broader":["http://id.loc.gov/authorities/subjects/sh85009284"],"aliases":["Ionospheric disturbances, Sudden"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85129617","provider":"lcsh","revision":"65dfe75b529a6ba5","taxonomy_revision":"f050b5d4780b1289","title":"Sudden ionospheric disturbances","url":"/topics/S85129617","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"864770586495288896","address_version":"morton4x16-v1","coordinates":[0,20,19430,17408],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}