Zaftarewar ƙasa
 Zaftarewar ƙasa | |
|---|---|
 | |
| Bayanai | |
| Ƙaramin ɓangare na |
slide (en)  da masifa |
| Has cause (en) |
heavy rain (en) , girgizar ƙasa da volcanic eruption (en) |
| Has contributing factor (en) | Gandun daji |
| Nada jerin |
list of landslides (en) |
Kalmar zaftarewar ƙasa ko, ƙasa da yawa, faɗuwar ƙasa,tana nufin nau'ikan ɓarna da yawa wanda zai iya haɗawa da faffadan motsi na ƙasa, kamar dutsen dutse, gazawar gangara mai zurfi, kwararar ruwa, da tarkace. gudana[1].
Zaftarewar kasa na faruwa a wurare daban-daban, wanda ke nuna ko dai m ko mai saukin kai, daga tsaunukan tsaunuka zuwa tsaunukan bakin teku ko ma a ƙarƙashin ruwa, inda a haka ake kiran su da zaftarewar ƙasa. Nauyin nauyi shine babban abin motsawa don zaftarewar ƙasa ta faru, amma akwai wasu abubuwan da ke shafar kwanciyar hankali wanda ke haifar da takamaiman yanayi wanda ke sa gangara ya zama mai rauni[2].
A lokuta da yawa, zaftarewar ƙasa tana haifar da wani takamaiman abin da ya faru (kamar ruwan faru (kamar ruwan sama mai ƙarfi, girgizar ƙasa, yanke gangara don gina hanya, da sauran su da yawa), kodayake ba koyaushe ake iya gane wannan ba.
Sanadi
[gyara sashe | gyara masomin]Zaftarewar kasa na faruwa ne lokacin da gangaren (ko wani sashi) ke fuskantar wasu matakai da ke canza yanayin sa daga tsayayye zuwa maras tabbas. Wannan yana da mahimmanci saboda raguwar ƙarfin ƙarfi na kayan gangarawa, ƙaruwa a cikin matsin lamba na kayan, ko haɗuwa biyu. Canje -canjen kwanciyar hankali na gangarawa na iya haifar da wasu dalilai, yin aiki tare ko kuma shi kaɗai. Abubuwan da ke haifar da zaftarewar ƙasa sun haɗa da: jikewa ta hanyar shigar da ruwan sama, narkar da dusar ƙanƙara, ko narkar da kankara; mafitar ruwan karkashin kasa, ko karuwa da rami ruwa matsa lamba (misali saboda aquifer recharge a ruwa yanayi, ko da ruwan sama da ruwa infiltration)[3].
Manazarta
[gyara sashe | gyara masomin]- ↑ Landslide synonyms". www.thesaurus.com. Roget's 21st Century Thesaurus. 2013. Retrieved 16 March 2018.
- ↑ McGraw-Hill Encyclopedia of Science & Technology, 11th Edition, ISBN 9780071778343, 2012
- ↑ Hungr, Oldrich; Leroueil, Serge; Picarelli, Luciano (2014-04-01). "The Varnes classification of landslide types, an update". Landslides. 11 (2): 167–194.