Puerto Rico: 6.5 te kaha o te ruu

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There is no widespread tsunami threat in Puerto Rico, different from first reported by some media. However a local threat could be possible.

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There is no widespread tsunami threat in Puerto Rico, different from first reported by some media. However a local threat could be possible. A strong 6.5-magnitude earthquake struck at sea off the Puerto Rican coast at a shallow depth of less than 30 km early on Monday, the US Geological Survey reports.

I pa te ru i te 56 kiromita mai i te takutai raki o te motu. Ko te whakapaipai, ko San Juan, kei reira nga tangata 400,000 e noho ana kei te taha o te motu.

Karekau he wharanga, he kino ranei i korerotia. He nui te umanga tuuruhi ki tenei wahanga o te motu. E ai ki te Whare Whakatupato Aniwhaniwha Moananui-a-Kiwa ka taea e te ru i te ngaru o te rohe, engari karekau he riri mo te whanuitanga o te ngani tainiwha.

Ko te ru o Puerto Rico i te Mane ka tata ki te 4 tau i muri mai i te ru kaha 7.0-nui i pakaru tetahi atu motu Karipiana - Haiti.

Neke atu i te 2010 te hunga i mate i te tau 100,000, a, i puta he aitua tangata ki te motu, e noho tonu ana ko tetahi o nga tino rawakore o te ao.

Seismotectonics o te Caribbean Region me te Vicinity

Ko te whaanuitanga me te matatini o nga tikanga tectonic e whakaatu ana i te paenga o te pereti Karipiana, e kore e iti iho i te wha nga pereti nui (Amerika ki te Raki, Amerika ki te Tonga, Nazca, me Cocos). Ko nga rohe ruu o te ruu nui (nga rohe o Wadati-Benioff), nga awaawa moana, me nga aria o nga puia e tohu ana i te whakahekenga o te wai moana moana i te taha o nga rohe o Amerika ki te Tonga me te Moana Atimana o te papa Karipiana, me te raru o te whenua i Guatemala, i te raki o Venezuela, me te Cayman Ko te hiwi me te Cayman Trench e tohu ana i te he o te tectonics peihana.

Kei te taha raki o te pereti Karipiana, ka neke whaka te hauauru te pereti o Amerika Te Taitokerau ki te pereti Karipiana i te tere o te 20 mm/tau. Ka noho te motini ki te maha o nga hapa hurihuri nui e toro atu ana whaka te rawhiti mai i Isla de Roatan ki Haiti, tae atu ki te Hapa Moutere o Swan me te Hapa o Oriente. Ko enei hapa e tohu ana i nga rohe tonga me te raki o te awaawa o Cayman. I tua atu ki te rawhiti, mai i te Dominican Republic ki te Moutere o Barbuda, ka piki haere nga nekehanga i waenga i te pereti o Amerika Te Taitokerau me te pereti Karipiana, a, ka uru tetahi waahanga e te tata whakarara te whakahekenga o te pereti Amerika Te Tai Tokerau i raro i te pereti Karipiana. Ko te hua tenei i te hanganga o te awa hohonu o Puerto Rico me tetahi rohe o nga rū whenua waenga (70-300 kiromita te hohonu) i roto i te papa i raro. Ahakoa te whakaaro ka taea e te rohe whakaheke o Puerto Rico te whakaputa i te ru megathrust, karekau he kaupapa pera i nga tau kua hipa. I puta te huihuinga whakamutunga (tukina te he) i konei i te 2 o Haratua, 1787, a, i rongo whanuitia puta noa i te motu me te tuhi i te whakangaromanga puta noa i te takutai raki katoa, tae atu ki a Arecibo me San Juan. Mai i te tau 1900, ko nga ru nui rawa atu e rua i puta ki tenei rohe ko te 4 o Akuhata 1946 M8.0 Samana i te raki-raki o Hispaniola me te rū o Hūrae 29, 1943 M7.6 Mona Passage, he rū whenua pāpaku e rua. Ko tetahi waahanga nui o te motini i waenga i te pereti o Amerika Te Taitokerau me te pereti Karipiana i tenei rohe ka uru mai e te maha o nga koha patu-paheke maui-maui e wehewehe ana i te motu o Hispaniola, ara ko te Septentrional Fault i te raki me te Enriquillo-Plantain. Te he o te kari ki te tonga. Ko nga mahi e tata ana ki te punaha Enriquillo-Plantain Garden Fault he pai rawa te tuhi e te rū whenua kino o Hanuere 12, 2010 M7.0 Haiti, ona ruru whai muri me tetahi ru rite i te tau 1770.

Ka neke ki te rawhiti me te tonga, ko nga kokorapa rohe huri noa i Puerto Rico me te raki o Lesser Antilles kei reira te perehana pereti o te pereti Karipiana e pa ana ki nga papa o Amerika ki te Raki me te Tonga ki te Tonga he iti ake te kiko, na te kaha o nga mahi a te motu-arc tectonics. I konei, ko nga pereti Amerika ki te Raki me Amerika ki te Tonga ka heke ki te hauauru o raro o te papa Karipiana i te taha o te Atere Iti Iti me te 20 mm / neke atu. I te mutunga o tenei hautanga, ka puta etahi ruu tuuturu waenga i waenga i nga papa i whakahekehia me te mekameka puia kaha i te taha o te aawa o te motu. Ahakoa ko nga Itire Iti Iti te mea nui i roto i te Karipiana, ko etahi o enei huihuinga kua nui ake i te M7.0 i roto i nga rautau kua hipa. Ko te moutere o Guadeloupe te waahi o tetahi o nga ruu nui rawa atu o te megathrust i tenei rohe i te Hui-tanguru 8, 1843, me te kaha o te korero nui atu i te 8.0. Ko te ruu i waenga-hohonu tino nui i pa ake i te papa iti o Lesser Antilles ko te Whiringa-a-rangi 29, 2007 M7.4 Martinique ru whenua ki te raki ma raki o Fort-De-France.

The southern Caribbean plate boundary with the South America plate strikes east-west across Trinidad and western Venezuela at a relative rate of approximately 20 mm/yr. This boundary is characterized by major transform faults, including the Central Range Fault and the Boconó-San Sebastian-El Pilar Faults, and shallow seismicity. Since 1900, the largest earthquakes to occur in this region were the October 29, 1900 M7.7 Caracas earthquake, and the July 29, 1967 M6.5 earthquake near this same region. Further to the west, a broad zone of compressive deformation trends southwestward across western Venezuela and central Columbia. The plate boundary is not well defined across northwestern South America, but deformation transitions from being dominated by Caribbean/South America convergence in the east to Nazca/South America convergence in the west. The transition zone between subduction on the eastern and western margins of the Caribbean plate is characterized by diffuse seismicity involving low- to intermediate-magnitude (M<6.0) earthquakes of shallow to intermediate depth. The plate boundary offshore of Colombia is also characterized by convergence, where the Nazca plate subducts beneath South America towards the east at a rate of approximately 65 mm/yr. The January 31, 1906 M8.5 earthquake occurred on the shallowly dipping megathrust interface of this plate boundary segment. Along the western coast of Central America, the Cocos plate subducts towards the east beneath the Caribbean plate at the Middle America Trench. Convergence rates vary between 72-81 mm/yr, decreasing towards the north. This subduction results in relatively high rates of seismicity and a chain of numerous active volcanoes; intermediate-focus earthquakes occur within the subducted Cocos plate to depths of nearly 300 km. Since 1900, there have been many moderately sized intermediate-depth earthquakes in this region, including the September 7, 1915 M7.4 El Salvador and the October 5, 1950 M7.8 Costa Rica events. The boundary between the Cocos and Nazca plates is characterized by a series of north-south trending transform faults and east-west trending spreading centers. The largest and most seismically active of these transform boundaries is the Panama Fracture Zone. The Panama Fracture Zone terminates in the south at the Galapagos rift zone and in the north at the Middle America trench, where it forms part of the Cocos-Nazca-Caribbean triple junction. Earthquakes along the Panama Fracture Zone are generally shallow, low- to intermediate in magnitude (M<7.2) and are characteristically right-lateral strike-slip faulting earthquakes. Since 1900, the largest earthquake to occur along the Panama Fracture Zone was the July 26, 1962 M7.2 earthquake.

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