Rangarira ndima iri pasi apa uye wozopindura mubvunzo mushure mezvo mumutauro mumwechete sechikamu: Passage: A lee trough, inozivikanwawo seyakagadzikana trough, ndeye "Kudzvinyirira kwakagadzirwa parutivi rwegomo mumamiriro ezvinhu apo mhepo iri kuvhuvhuta nechinhu chakakosha pamusoro pegomo; inowanzoonekwa pamamepu emamiriro ekunze eUnited States kumabvazuva kweMakomo eRombo, uye dzimwe nguva kumabvazuva kweAppalachians, uko isinganyanyozivikanwa. "Inogona kuumbwa semhedzisiro yekumanikidzwa kweadiabatic yemhepo inonyura parutivi rwegomo, kana kuburikidza ne cyclogenesis inokonzerwa ne" kuwirirana kwakatwasuka kwakabatana nekutambanuka kwemakoramu emhepo anopfuura pamusoro pegomo uye achidzika padanho re lee. "Mubvunzo: Nzira yekuita sei lee trough inogona kuumbwa?
zvichida somugumisiro wokumanikidzwa kweadiabatic yemhepo inonyura parutivi rwomugomo rwegomo, kana kuti kuburikidza ne cyclogenesis inobva ku "kuchinjana kwakatwasuka kunobatanidzwa nekutambanuka kwakamira kwemakoramu emhepo achipfuura pamusoro pemutsara uye achidzika pasi pemugwagwa