Jerin girgizar ƙasa a Puerto Rico da Virgin Islands

Abubuwan da suka faru na manyan girgizar ƙasa a Haiti tare a shekarar da suka faru Puerto Rico da Virgin Islands suna kan iyaka tsakanin Caribbean da faranti Arewacin Amurka, suna sa waɗannan yankuna suna fuskantar girgizar kasa. Wannan yanki ne mai cike da girgizar ƙasa wanda ke kewaye da kuskuren da yawa; zuwa arewa, farantin Arewacin Amurka yana raguwa a ƙarƙashin farantin Caribbean, yayin da kuskurensa da yawa suka ratsa babban tsibirin Puerto Rico daga kudu maso gabas zuwa arewa maso yamma. Puerto Rico da Virgin Islands suma suna kan wani microplate wanda ke ci gaba da lalacewa ta hanyar yankin subduction zuwa arewa. Puerto Rico koyaushe tana cikin haɗarin fuskantar manyan girgizar ƙasa, mafi girma fiye da 7.0.

## Tarihi

Yankin ya kasance yana aiki da girgizar ƙasa tun zamanin da.  Manyan yankuna na Laifukan Arewa da Babban Kudancin da ke ƙetara babban tsibirin Puerto Rico a gefe suna aiki tun zamanin Eocene.  An yi rikodin girgizar ƙasa a yankin tun farkon ƙarni na 17 kuma an fara rubuta wasu ayyukan girgizar ƙasa na farko a cikin Amurka a Puerto Rico da Hispaniola.  Ɗaya daga cikin girgizar asa na farko da aka yi rikodin a yankin shine ranar 8 ga Satumba, 1615, wanda ya samo asali daga yankin Jamhuriyar Dominican kuma ya haifar da lalacewa a ko'ina cikin tsibirin.    An yi nazari kuma an yi rikodin girgizar ƙasa a Puerto Rico tun ƙarni na 20.  Cibiyar Sadarwar Seismic ta Puerto Rico (Red Sísmica de Puerto Rico ko RSPR), wacce ke ƙunshe a cikin sashin ilimin Geology na Jami'ar Puerto Rico, Mayagüez, an kafa shi a cikin 1974 ta Cibiyar Nazarin Yanayin ƙasa ta Amurka (USGS) da tsohuwar Hukumar Kula da Wutar Lantarki ta Puerto Rico (PREPA).  An kafa ta ne da manufar kimanta fasalin girgizar kasa da nufin gina tashoshin makamashin nukiliya a yankin.  Manufarta a yau ita ce ganowa, sarrafawa da nazarin ayyukan girgizar ƙasa a cikin yankin Puerto Rico.  RSPR tana aiki da seismometers 25 a ko'ina cikin Puerto Rico, Tsibirin Budurwar Amurka da Tsibirin Budurwar Biritaniya.  Biyu daga cikin waɗannan na'urori masu saukar ungulu mallakin Hukumar Injiniya ta Sojojin Amurka ne

A matsakaita, ana samun girgizar asa kusan 5 da aka yi rikodi a kowace rana kuma kusan girgizar asa 3 tare da girman 5.0 da aka yi rikodin kowace shekara a yankin.    Ganin cewa yawancin kurakuran da ke aiki suna cikin teku, yawancin girgizar asa a yankin ba sa haifar da asarar rayuka ko babbar lalacewa, kuma manyan girgizar asa da ke faruwa a Puerto Rico ba su da yawa.  Yawancin manyan girgizar kasa a tarihi sun faru ne a cikin teku wanda ke sa yankin ya kasance mai saurin kamuwa da tsunami mai lalata.  Tsunami na ƙarshe da ya haifar da babbar barna a Puerto Rico shine ranar 11 ga Oktoba, 1918, wanda girgizar ƙasa ta Aguadilla ta 1918 ta haifar.  An sami wasu abubuwan da suka faru na tsunami na baya-bayan nan, kamar a cikin 1946, wanda bai haifar da babbar illa ga tsibirin ba.  Girgizar kasa ta karshe da ta haifar da asarar rayuka ita ce jerin girgizar kasa na kudu maso yammacin Puerto Rico na 2020 wanda ya yi sanadiyar mutuwar mutane 4.  Girgizar kasa ta ƙarshe da ta haifar da babbar barna da asarar rayuka a tsibirin Virgin Islands ta faru ne a shekara ta 1867;  wannan girgizar kasa ta haifar da tsunami da ta shafi tsibirin Virgin Islands da Puerto Rico.

## Shahararrun girgizar ƙasa a Puerto Rico da Virgin Islands

## Dubi kuma

* Geology na Puerto Rico
* Jerin girgizar ƙasa a cikin Caribbean
* Jerin girgizar ƙasa
* Binciken Yanayi na Amurka (USGS)