Abinda aka sani da sunan rissaga Al'amari ne wanda ke faruwa a wasu kwarkwata da tashoshin jiragen ruwa a Tsibirin Balearic. Ana iya fassara shi zuwa Mutanen Espanya azaman raɗaɗi. Wannan wani abu ne mai ban sha'awa wanda ya ƙunshi abubuwa da yawa a matakin teku wanda zai iya kaiwa mita 2 a faɗi a cikin mintuna 10 kawai. Ba sabon abu bane kawai ga wannan tsibirin, amma gaskiya ne cewa hakan yakan faru sau da yawa.
A cikin wannan labarin zamu gaya muku duk halaye, lalacewa da kuma yawan me rissagas ke gudana.
Menene rissagas
Wannan sunan ya faru ne saboda wani abin da ke faruwa tare da tsananin tasiri a Tsibirin Balearic. Kodayake ba irin wannan rukunin yanar gizon bane, ana yin sa a ciki tashar jirgin ruwa na Ciutadella a garin tsibirin Menorca.
Lokacin da wannan lamarin ya faru sai ya bayyana kansa a matsayin ba zato ba tsammani a matakin ruwa a tashar jirgin ruwa. Tare da wannan gangaren tudu, duk tashar jirgin kusan ba komai a cikin 'yan mintuna. A sakamakon haka, kwale-kwalen masunta sun bugi kasa kuma da yawa daga cikin kifin sun mutu saboda shaka. Koyaya, sauran yankuna na tashar jirgin ruwa basu cika fanko ba amma zaku iya ganin babban faduwa a matakin ruwa. Wannan ya sa jiragen ruwa da yawa sun makale na wani lokaci.
Mintuna kaɗan, ba zato ba tsammani, ruwan ya sake dawowa tashar jirgin ruwa kuma wannan ya sa duk jiragen ruwan rarrafe da bugun juna. Kari kan haka, da yawa daga kwale-kwalen sun nitse kuma sun haifar da barna mai yawa gaba daya. A wasu lokuta mukan sami ambaliyar ruwa kwatsam wanda ke haifar da wasu ambaliyar ruwa a yankunan da ke kusa da tashar jirgin ruwan. A cikin waɗannan wadatar ruwan mun sami babban sakamako akan ababen hawa da wuraren da suke kusa da tashar jiragen ruwa.
A yadda aka saba ana sake maimaita wannan abin mamakin na awanni. Wasu lokuta ana samun rissagas sau da yawa a rana ɗaya.
Dalilin rissagas
Kamar yadda ake tsammani, wannan lamarin baƙon abu ne kuma an yi ƙoƙari don neman dalilin asalinsa. Wannan sanannen sanannen ɗan lokaci ne, musamman daga Ciutadella. Akwai wasu bayanan da suke magana game da nutsewar jiragen ruwa a tashar jirgin ruwa na Ciutadella a cikin karni na XNUMX. Kuma shine duk waɗannan raƙuman ruwa suna da faɗuwa mai ban mamaki kuma yana faruwa a cikin ɗan gajeren lokaci kaɗan.
A yadda aka saba, ana yin la'akari da cewa faduwar igiyar taurari na Bahar Rum yawanci tana da kimanin santimita 20 a cikin awanni da yawa. Wannan wani abu ne wanda da kyar ido yake iya gani. Koyaya, rissagas sun samo asali masu girma na fiye da mita 2 a tsayin cikin minti 10 kawai.
Asalin rissagas ba a san shi da kyau ba sai a cikin 'yan kwanakin nan lokacin da aka sami ƙarin ilimin meteorology da aiki na igiyar ruwa. Anyi tunanin cewa asalin rissagas na iya zama ilimin taurari. Wannan yana nufin cewa tana da nau'ikan aiki kama da na igiyar ruwa. Hakanan an yi tunanin cewa zai iya samun asalin girgizar ƙasa. Hakan na iya faruwa saboda girgizar kasa da ke karkashin ruwa wanda ke haifar da taguwar ruwa daban-daban wanda za'a fadada don isa tashar. Koyaya, Duk waɗannan maganganun suna da ƙarfi sosai don iya bayyana abin da ya faru musamman. Mafi ƙarancin abin da za a iya bayanin shi shi ne yawaitar wannan abin a cikin wannan lambun kuma ba a cikin wasu ba.
An san ainihin dalilin a cikin 1934, bayan nazarin daban-daban kan sauye-sauye na ban mamaki a matakin teku. Nazarin ya nuna cewa dalilin rissagas shine yanayin yanayi. Suddenananan canje-canje kwatsam a matakin teku suna haɗuwa da wasu canje-canje kwatsam a cikin matsin yanayi. Game da Ciutadella a cikin ana samar da tsibirin Balearic ne sakamakon mu'amala tsakanin yanayi da teku. Wasu marubutan suna tunanin ka'idar cewa rissaga ana samar da shi ne ta hanyar tasirin raƙuman ruwa masu ƙarfi waɗanda aka samar a cikin matakan tsakiya na troposphere. Waɗannan raƙuman ruwa na ɗaukar nauyi suna faruwa ne saboda ƙarar iska da aka samu sakamakon jujjuyawar iska a cikin matsin yanayi sama da matakin ƙasa.
Yanayin yanayi
Akwai yanayin yanayi da yawa waɗanda suka fi dacewa don haɓaka rissagas. Babban yanayin yanayi guda 3 wadanda suka dace da bayyanar wannan al'amarin sune masu zuwa:
- Ya kamata a sami iska mai ƙarfi kudu maso yamma a tsakiyar da matakan babba na troposphere. Wajibi ne waɗannan iskar su hura a gaban mashigar ruwa mai zurfin da ke shafar Yankin Iberiya.
- Ta matakan ƙasa da mita 1500 Dole ne ya kasance akwai ingancin iska wanda ke haifar da kasancewar gurɓataccen zazzabi mai ƙarfi tsakanin wannan matakin da iskar da ke sama da saman teku. Iskar da ke saman teku za ta fi wannan sanyi.
- Dole akwai iska mai rauni ko matsakaiciyar iska mai gudana a saman.
Wannan yanayin na ƙarshe idan kwanan nan kun tabbatar da cewa ba lallai bane rissagas ya faru. Rissagas ya taɓa kiyayewa tare da iskoki daga kudu ko kudu maso yamma akan ƙasa. Masana ilimin yanayi na Bahar Rum sun yanke shawarar cewa waɗannan kyawawan yanayin yanayi na rissagas suna faruwa a lokacin rabin shekara mai dumi. Sabili da haka, mafi girman mita na wannan lamarin yana faruwa tsakanin Afrilu da Oktoba.
Lokaci hade da rissagas
Ofaya daga cikin mahimman abubuwan da za'a ɗauka cikin laakari da hasashen saka idanu akan rissagas shine yanayin yanayi wanda ke nuna waɗannan halayen. A cikin kwanaki a waɗanda ke samar da rissagas sama yawanci ana lulluɓe su ne ta manyan shimfidu masu ruɓaɓɓu da ruɓewa. A yadda aka saba ba safai ake samun gajimare a kasa ba, amma halayyar sama ce wacce ke da gajimare da kuma rawaya saboda hazo. Hazo kamar daga ƙurar da ke fitowa daga wannan nahiyar Afirka.
A wasu lokutan akwai 'yan gajimare kaɗan da suka watse waɗanda ba sa nuna mahimman motsi a tsaye ko dai.
Ina fatan cewa tare da wannan bayanin zaku iya ƙarin koyo game da abin da ya faru na rissagas.