Wata girgizar kasa mai karfin 7.5 ta faru a daren Laraba Laraba mil 185 kudu da Tsibirin Aminci. da karfe 6.08 na yamma agogon kasar, 5 ga Disamba.

Mahukuntan yankin a Vanuatu sun bayar da gargadin tsunami na cikin gida, amma a cewar USGS a Hawaii babu wani gargadi da ke kan Tekun Fasifik gami da Guam da Hawaii.

location:

168.2 kilomita (104.3 mi) ESE na Tadine, Sabon Caledonia
254.4 kilomita (157.7 mi) ESE na W Sabon Caledonia
298.9 kilomita (185.3 mi) E na Mont-Dore, Sabon Caledonia
309.9 kilomita (192.2 mi) E na Dumba, Sabon Caledonia
311.1 kilomita (192.9 mi) E na Noumea, Sabon Caledonia

Girgizar ranar 5 ga Disamba, 2018, M 7.5 a gabashin New Caledonia a kudu maso yammacin Tekun Pacific ya faru ne sakamakon kuskuren rashin daidaiton al'ada a cikin ɓawon tekun Australiya, yamma da Kudu ta Kudu New Hebrides Trench wanda ke nuna alamar iyakar tsakanin Australia da Pacific plate a wannan yankin. Hanyoyin samar da kayan masarufi suna nuna kuskure ya faru akan matsakaicin lamuran da ya shafi arewa maso yamma ko kudu maso gabas. A wurin da wannan girgizar ƙasar take, farantin Australiya yana tafiya zuwa gabas-arewa maso gabas dangane da Pacific a ƙimar kusan 78 mm / yr. A Kudancin New Hebrides Trench, Australia lithosphere ta haɗu tare da nutsewa a ƙarƙashin tekun Pacific, suna saukowa cikin alkyabbar kuma suka kafa yankin yankin New Hebrides / Vanuatu, wanda ya faro daga New Caledonia a kudu zuwa tsibirin Santa Cruz a arewa, nesa na kusan kilomita 1,600. Ranar 5 ga Disamba, 2018, girgizar kasa ta faru kusa da wannan ramin, kuma zuwa yamma, a yankin tectonic wani lokacin da aka fi sani da "hawan waje" inda farantin da ke karkashin kasa ya fara lankwashewa (yana fadada) kafin ya nitse a cikin rigar. Wuri, zurfin, da kuma hanyar magance wannan girgizar kasa duk sunyi daidai da abin da ya faru sakamakon lalatattun abubuwa a wannan yanki na waje.

Yayinda ake yawan zana shi azaman maki akan taswirori, girgizar ƙasa ta wannan girman an bayyana ta yadda ya dace azaman zamewa akan yanki mafi girman laifi. Abubuwan da suka faru na kuskuren al'ada na girman 5 Disamba, 2018 girgizar ƙasa yawanci kusan 75 × 30 kilomita a cikin girman (tsawon x nisa).

Girgizar 5 ga Disamba, 2018 ita ce girgizar ƙasa ta shida ta M 6 + da za ta faru a wannan yankin a cikin watanni uku da suka gabata, kuma wani ɓangare ne na jerin abubuwan da suka fara aiki wanda ya fara a ranar 29 ga watan Agusta, 2018 tare da M 7.1 ta hanyar daidaita girgizar ƙasa mai ɓarna a gabas. na Kudancin New Hebrides Trench da kuma kusan kilomita 70 gabas da girgizar kasar 5 ga Disamba, 2018. A wannan lokacin, game da girgizar ƙasa 140 M 4 + da USGS suka yi rikodin a cikin wannan yankin, yawancin girgiza girgizar ƙasa da ke ɓarna a gabashin iyakar iyaka. Girgizar ƙasar ta yau ta kasance ta mintina 4 da gaban M 6.8, kimanin kilomita 13 daga yamma yamma da maɓuɓɓugar tekun. Hakanan jerin aiki ya gudana tsakanin Oktoba-Disamba 2017, kawai zuwa arewacin abubuwan 2018 kuma galibi a cikin Yankin Rarshen waje. Jerin 2017 ya ƙunshi sama da abubuwan 350 M4 +, gami da abubuwan M6 bakwai (da 1 M7 +).

Yankin tsibirin Loyalty yana aiki sosai a cikin girgizar ƙasa, kuma yankin tsakanin kilomita 250 na girgizar ƙasa ta Disamba 5, 2018 ta ɗauki nauyin wasu 24 na girgizar ƙasa ta M 7 + a karnin da ya gabata. Mafi girma shine girgizar M 8.1 a watan Satumbar 1920, wanda ke kusa da kilomita 230 zuwa arewa maso yamma na taron yau, kawai zuwa gabas da maɓuɓɓugar teku. Guda biyar daga cikin waɗannan girgizar ƙasa ta M 7 + sun faru zuwa yamma na maɓuɓɓugar teku, gami da girgizar ƙasa ta M 7.7 a watan Mayu 1995, kilomita 125 zuwa kudu maso gabas, da girgizar M 7.1 a cikin Janairu 2004, kilomita 40 zuwa kudu maso gabas, da M7.0 da aka ambata a sama .2017 girgizar kasa a watan Nuwamba 70, kilomita 2004 zuwa arewa maso yamma. Babu ɗayan waɗannan da aka san ya haifar da lahani ko haɗari. Girgizar da aka yi a watan Janairun 7.1 M 270 shima wani bangare ne na jerin abubuwa kusan 2003, farawa a watan Disambar 7.3. Wannan jerin ya hada da girgizar kasa da ke haifar da kuskure (mafi girman abin da ya faru a cikin jerin shi ne M 27 girgizar kasa mai girgizawa a ranar Disamba 2003, 25 ) da kuma girgizar kasa da ke lalata yamma zuwa maɓuɓɓugar teku. Tsakanin 2003 ga Disamba, 3, da Janairu 2004, 12, girgizar ƙasa 6 na M 2003+ ya faru. Tsarin 2004-2004 ya mutu a farkon tsakiyar Fabrairu na XNUMX.

ABUBUWAN DA ZA KU GUDU DAGA WANNAN LABARI:

Girgizar kasa ta 5 ga Disamba, 2018 ita ce girgizar kasa ta M 6+ ta shida da ta afku a wannan yanki a cikin watanni uku da suka gabata, kuma wani bangare ne na jerin abubuwan da suka fara faruwa a ranar 29 ga Agusta, 2018 tare da M 7.
Girgizar kasa 5 a gabas da New Caledonia a kudu maso yammacin Tekun Pasifik ya faru ne sakamakon rashin daidaituwa na yau da kullun a cikin ɓangarorin teku na farantin Ostiraliya, a yamma da Kogin New Hebrides ta Kudu wanda ke nuna iyakar farantin tsakanin Ostiraliya da faranti na Pacific a wannan yankin. .
A Kudancin New Hebrides Trench, Ostiraliya lithosphere yana haɗuwa tare da nutsewa a ƙarƙashin farantin Pacific, yana gangarowa cikin rigar kuma ya kafa yankin Subduction New Hebrides/Vanuatu, wanda ya tashi daga New Caledonia a kudu zuwa tsibirin Santa Cruz a arewa, nesa. na kimanin kilomita 1,600.