Rubuta ci gaba don wannan sakin layi - Girgizar kasa ta Algarve ta 1722 girgizar kasa ce a ranar 27 ga Disamba 1722 wanda aka ji a duk yankin Portugal na Algarve kuma ya lalata babban yanki a kudancin Portugal yana haifar da tsunami na gida wanda ya ambaliya yankunan da ba su da zurfi na Tavira. Ba a bayyana ba ko asalinsa ya kasance a kan tudu ko a bakin teku kuma, a kowane hali, menene tushen tectonic da ke da alhakin taron. Wasu ayyukan bincike na kimiyya sun kammala cewa girgizar kasa da tsunami na 27 ga Disamba 1722 na Algarve wataƙila an samar da shi a cikin teku, kusa da 37 ° 01 'N, 7 ° 49' W. Girgizar kasa ta 1722 ta kasance shekaru 33 kafin babban girgizar kasa na 1755
wanda ya kasance babban abin da ya faru a tarihin Portuguese, musamman saboda tasirinsa a Lisbon wanda aka shafe shi ta hanyar rushewar tsarin, wuta sannan kuma ambaliyar ruwa daga tsunami wanda ya hau Kogin Tagus. Yawancin takaddun abubuwan girgizar kasa na Algarve na 1722 an aika su zuwa Lisbon don adanawa kuma sun ɓace bayan gobarar da ta biyo bayan girgizar kasa ta 1755. Amma 'yan rubuce-rubucen rubuce-rubucen da ke akwai na girgizar kasa ta 1722 sun bayyana jerin abubuwan da suka faru da suka shafi yankuna da yawa na Algarve tare da girgizar ƙasa mai ƙarfi da suka sa kararrawa ta yi sauti a Tavira, Faro da Loulé. A Tavira wani jirgin ruwa da aka ajiye a kogin Gilão ya bar shi ya bushe kafin tsunami ya buga tare da ma'aikatan da suka yi mamakin iya tafiya zuwa bakin teku. An kiyasta ƙarfin ya yi rajista 7.8 digiri a kan sikelin Richter wanda ke haifar da tsoro na gaba ɗaya: rushewa, rushewa tare da mummunar lalacewar gine-gine da yawa, lalacewar tushe, fashewa a cikin ƙasa, da kuma samar da maɓuɓɓugan ruwa da ambaliyar ruwa. Girgizar kasa ta 1722 wataƙila ta haifar da diapirism inda dutsen mai zurfi daga matakan zurfi a ƙarƙashin matsin lamba ya huda kayan da ba su da zurfi. A sakamakon haka, an halaka birnin Loulé gabaki ɗaya. A cikin shekarun 2010, nazarin haɗarin girgizar ƙasa ya kiyasta cewa za a sami kusan mutuwar 12,000 idan girgizar ƙasa daidai da ta 1722 ta faru a lokacin.