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Terremotos


Carlos Dias
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De acordo com o banco de dados do EMSC foi o maior terremoto na Nova Zelândia pelo menos dos últimos 56 anos, M7.9. Houve antes um terremoto de 8 graus no mar afastado ao sul da Costa Sul da Ilha do Sul.

Hipocentro exatamente entre outros dois Terremotos próximo de Mw7, o deslocamente deve ter sido do epicentro para nordeste.

iGp3JZo.jpg

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No banco de dados do USGS houve outro terremoto de 7.8 graus no sul da ilha do sul em 2009.

Me chama atenção o tamanho dessa lacuna sísmica no centro da Ilha do Sul. Não houve nenhum terremoto de mais de 6 graus nos últimos 116 anos e com esse movimento de hoje a pressão n'essa área, que aparenta estar bem sólida, aumenta bastante e deve ter um terremoto muito poderoso no futuro.

40j9mHL.png

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  • 2 weeks later...
Forte Terremoto no Japão

 

Epicentro foi Oceano Pacífico, próximo à região de Fukushima, leste de Honshu.

Magnitude preliminar de 7.3 graus segundo o USGS.

 

Alerta de Tsunami está em vigor na região de Fukushima

 

Tsunami Warnings / Tsunami Advisories

 

Issued at 06:02 JST, 22 Nov. 2016

 

******************Headline******************

Tsunami Warnings issued for the following coastal regions of Japan:

Evacuate immediately

FUKUSHIMA PREF.

 

*******************Text********************

Tsunami Warnings have been issued for the following coastal regions of Japan:

*FUKUSHIMA PREF.

 

Tsunami Advisories have been issued for the following coastal regions of Japan:

PACIFIC COAST OF AOMORI PREF.

IWATE PREF.

MIYAGI PREF.

IBARAKI PREF.

KUJUKURI AND SOTOBO AREA, CHIBA PREF.

 

Tsunamis are expected to arrive imminently in the following coastal regions of Japan (coastal regions above with asterisks):

FUKUSHIMA PREF.

 

***********Tsunami Forecast definitions************

Evacuate immediately

 

Tsunami Warning

Damage due to tsunami waves is expected.

Evacuate immediately from coastal regions and riverside areas to a safer place such as high ground or an evacuation building.

Tsunami waves are expected to hit repeatedly. Do not leave safe ground until the warning is lifted.

 

Tsunami Advisory

A marine threat is present. Get out of the water and leave coastal regions immediately.

Due to the risk of ongoing strong currents, do not enter the sea or approach coastal regions until the advisory is lifted.

 

Tsunami Forecast (slight sea level changes)

Slight sea-level changes may be observed in coastal regions, but no tsunami damage is expected.

 

******* Earthquake Information ********

Occurred at 05:59 JST, 22 Nov. 2016

Region name FUKUSHIMA-KEN OKI

Latitude 37.3N

Longitude 141.6E

Depth about 10 km

Magnitude 7.3

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Uma onda de 140 cm foi observada no porto de Sendai em Miyagi.

Aparentemente as ondas se propagaram no sentido Norte-Sul ou Noroeste-Sudeste. Diferente do terremoto de 2011. O que pode indicar uma acomodação de diferentes níveis da placa tectônica ou o rompimento de alguma falha.

JMA reviu a profundidade pra 24 km, ainda muito acima da região de atrito entre as placas de Okhotsky e do Pacífico.

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[highlight=yellow]PTWC agora alerta para a possibilidade de tsunami sobre a Nicaragua, El Salvador e Honduras.[/highlight]

 

http://i.imgur.com/LE5Sisp.png

 

Imagina só tsunami de um lado e um furacão do outro! Que desespero!

 

Pensei nisso. O país sendo duramente atacado pelas forças da natureza.

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Ondas de até 1 metro são previstas pelo Pacific Tsunami Warning Center.

TSUNAMI THREAT FORECAST...UPDATED

---------------------------------

 

* TSUNAMI WAVES REACHING 0.3 TO 1 METERS ABOVE THE TIDE LEVEL

ARE POSSIBLE FOR SOME COASTS OF

 

EL SALVADOR... AND NICARAGUA.

 

Pelas previsões, as primeiras ondas estão chegando agora!

 

ESTIMATED TIMES OF ARRIVAL

--------------------------

 

* ESTIMATED TIMES OF ARRIVAL -ETA- OF THE INITIAL TSUNAMI WAVE

FOR PLACES WITHIN THREATENED REGIONS ARE GIVEN BELOW. ACTUAL

ARRIVAL TIMES MAY DIFFER AND THE INITIAL WAVE MAY NOT BE THE

LARGEST. A TSUNAMI IS A SERIES OF WAVES AND THE TIME BETWEEN

WAVES CAN BE FIVE MINUTES TO ONE HOUR.

 

LOCATION REGION COORDINATES ETA(UTC)

------------------------------------------------------------

CORINTO NICARAGUA 12.5N 87.2W 1935 11/24

ACAJUTLA EL SALVADOR 13.6N 89.8W 1937 11/24

PUERTO SANDINO NICARAGUA 12.2N 86.8W 1940 11/24

SAN JUAN DL SUR NICARAGUA 11.2N 85.9W 1951 11/24

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  • 2 weeks later...

[mod=Tavares]PODEROSO TERREMOTO NAS ILHAS SALOMÃO[/mod]

 

Magnitude preliminar de 8 graus

17fzNgX.png

 

Um alerta de tsunami está em vigor para a região da Polinésia

 

SUBJECT - TSUNAMI WATCH

 

A TSUNAMI WATCH IS ISSUED FOR THE STATE OF HAWAII EFFECTIVE AT

0748 AM HST.

 

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

 

ORIGIN TIME - 0739 AM HST 08 DEC 2016

COORDINATES - 10.7 SOUTH 161.4 EAST

LOCATION - SOLOMON ISLANDS

MAGNITUDE - 8.0 MOMENT

 

EVALUATION

 

BASED ON ALL AVAILABLE DATA A TSUNAMI MAY HAVE BEEN GENERATED BY

THIS EARTHQUAKE THAT COULD BE DESTRUCTIVE ON COASTAL AREAS EVEN

FAR FROM THE EPICENTER. AN INVESTIGATION IS UNDERWAY TO DETERMINE

IF THERE IS A TSUNAMI THREAT TO HAWAII.

 

IF TSUNAMI WAVES IMPACT HAWAII THE ESTIMATED EARLIEST ARRIVAL OF

THE FIRST TSUNAMI WAVE IS

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UPDATE

 

Magnitude do tremor foi revista pra M 7.7 e o alerta de tsunami abrange Ilhas Salomão, Vanuatu, Papua Nova Guiné e Nauru.

2JIsyGL.jpg

 

TSUNAMI MESSAGE NUMBER 1

NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI

1746 UTC THU DEC 8 2016

 

...PTWC TSUNAMI THREAT MESSAGE...

 

 

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

 

THIS MESSAGE IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE

UNESCO/IOC PACIFIC TSUNAMI WARNING AND MITIGATION SYSTEM AND IS

MEANT FOR NATIONAL AUTHORITIES IN EACH COUNTRY OF THAT SYSTEM.

 

NATIONAL AUTHORITIES WILL DETERMINE THE APPROPRIATE LEVEL OF

ALERT FOR EACH COUNTRY AND MAY ISSUE ADDITIONAL OR MORE REFINED

INFORMATION.

 

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

 

 

PRELIMINARY EARTHQUAKE PARAMETERS

---------------------------------

 

* MAGNITUDE 8.0

* ORIGIN TIME 1739 UTC DEC 8 2016

* COORDINATES 10.7 SOUTH 161.4 EAST

* DEPTH 40 KM / 25 MILES

* LOCATION SOLOMON ISLANDS

 

 

EVALUATION

----------

 

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.0 OCCURRED IN

THE SOLOMON ISLANDS AT 1739 UTC ON THURSDAY DECEMBER 8 2016.

 

* BASED ON THE PRELIMINARY EARTHQUAKE PARAMETERS... WIDESPREAD

HAZARDOUS TSUNAMI WAVES ARE POSSIBLE.

 

 

TSUNAMI THREAT FORECAST

-----------------------

 

* HAZARDOUS TSUNAMI WAVES FROM THIS EARTHQUAKE ARE POSSIBLE

WITHIN THE NEXT THREE HOURS ALONG SOME COASTS OF

 

SOLOMON ISLANDS... VANUATU... PAPUA NEW GUINEA... NAURU...

NEW CALEDONIA... TUVALU AND KOSRAE

 

 

RECOMMENDED ACTIONS

-------------------

 

* GOVERNMENT AGENCIES RESPONSIBLE FOR THREATENED COASTAL AREAS

SHOULD TAKE ACTION TO INFORM AND INSTRUCT ANY COASTAL

POPULATIONS AT RISK IN ACCORDANCE WITH THEIR OWN

EVALUATION... PROCEDURES AND THE LEVEL OF THREAT.

 

* PERSONS LOCATED IN THREATENED COASTAL AREAS SHOULD STAY ALERT

FOR INFORMATION AND FOLLOW INSTRUCTIONS FROM NATIONAL AND

LOCAL AUTHORITIES.

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Depois de quase um ano sem atividade, a falha de Samambaia voltou a registrar abalos:

 

Em seis horas, terra treme 17 vezes em cidade do Agreste potiguar

 

http://g1.globo.com/rn/rio-grande-do-norte/noticia/2016/12/tremor-de-magnitude-21-e-registrado-no-agreste-potiguar.html

 

Apesar da magnitude mínima e pouco perceptível, é preocupante pois pode estar precedendo um tremor maior.

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  • 2 weeks later...
  • 4 weeks later...

Aparentemente essa revisão foi um bug. Magnitude foi revisada pra 7.9 pelo PTWC e mantida em 8.0 pelo USGS e um alerta de tsunami foi emitido para a região.

 

PTWC:

PRELIMINARY EARTHQUAKE PARAMETERS

---------------------------------

 

* MAGNITUDE 7.9

* ORIGIN TIME 0430 UTC JAN 22 2017

* COORDINATES 6.1 SOUTH 155.2 EAST

* DEPTH 168 KM / 104 MILES

* LOCATION SOLOMON ISLANDS

 

 

EVALUATION

----------

 

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.9 OCCURRED IN

THE SOLOMON ISLANDS AT 0430 UTC ON SUNDAY JANUARY 22 2017.

 

* BASED ON ALL AVAILABLE DATA... HAZARDOUS TSUNAMI WAVES ARE

FORECAST FOR SOME COASTS.

 

 

TSUNAMI THREAT FORECAST...UPDATED

---------------------------------

 

* TSUNAMI WAVES REACHING 0.3 TO 1 METERS ABOVE THE TIDE LEVEL

ARE POSSIBLE FOR SOME COASTS OF

 

SOLOMON ISLANDS AND PAPUA NEW GUINEA.

 

 

* TSUNAMI WAVES ARE FORECAST TO BE LESS THAN 0.3 METERS ABOVE

THE TIDE LEVEL FOR THE COASTS OF

 

AMERICAN SAMOA... AUSTRALIA... CHUUK... COOK ISLANDS...

FIJI... FRENCH POLYNESIA... GUAM... HAWAII... HOWLAND AND

BAKER... INDONESIA... JARVIS ISLAND... JOHNSTON ATOLL...

KIRIBATI... KOSRAE... MARSHALL ISLANDS... NAURU... NEW

CALEDONIA... NEW ZEALAND... NORTHERN MARIANAS...

NORTHWESTERN HAWAIIAN ISLANDS... PALAU... PALMYRA

ISLAND... POHNPEI... SAMOA......

TOKELAU... TONGA... TUVALU... VANUATU... WAKE ISLAND...

WALLIS AND FUTUNA... AND YAP.

 

Shakemap USGS

lNqO5wu.jpg

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  • 3 weeks later...

Um sismo ocorreu há pouco nas Filipinas

 

Magnitude 6.7

Region MINDANAO, PHILIPPINES

Date time 2017-02-10 14:03:49.7 UTC

Location 9.71 N ; 125.28 E

Depth 40 km

Macroseismic

Intensity IV Effects: Largely Observed

Distances

292 km N of Budta, Philippines / pop: 1,274,000 / local time: 22:03:49.7 2017-02-10

 

166 km SE of Cebu City, Philippines / pop: 799,000 / local time: 22:03:49.7 2017-02-10

 

20 km SW of Ipil, Philippines / pop: 3,400 / local time: 22:03:49.7 2017-02-10

 

Fonte: ESMC

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  • 1 month later...
  • 3 weeks later...
  • 2 months later...

Terremoto nas Filipinas

 

Um terremoto de magnitude M6.5 a uma profundidade de apenas 6 km ocorreu na província de Leyte, Filipinas, mesma região afetada pelo Haiyan em 2013.

Danos foram registrados em várias cidades e houve deslizamentos de terra.

Duas mortes e mais de 100 feridos foram confirmados.

 

kPjAlpp.jpg

 

[bbvideo=560,315]https://www.youtube.com/watch?v=DS19nlzuRbg[/bbvideo]

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  • 2 weeks later...

Um terremoto de Magnitude 7.4 atingiu agora a pouco a região fronteiriça entre EUA e Rússia, próximo a Kamchatka

Nota-se no Mapa que a região de deslocamento fora uma pequena lacuna sísmica.

 

Cr03ocE.jpg

 

[update] Risco de tsunamis para um raio de 300km do epicentro:

 

TSUNAMI MESSAGE NUMBER 1

NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI

2345 UTC MON JUL 17 2017

 

...PTWC TSUNAMI THREAT MESSAGE...

 

 

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

 

THIS MESSAGE IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE

UNESCO/IOC PACIFIC TSUNAMI WARNING AND MITIGATION SYSTEM AND IS

MEANT FOR NATIONAL AUTHORITIES IN EACH COUNTRY OF THAT SYSTEM.

 

NATIONAL AUTHORITIES WILL DETERMINE THE APPROPRIATE LEVEL OF

ALERT FOR EACH COUNTRY AND MAY ISSUE ADDITIONAL OR MORE REFINED

INFORMATION.

 

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

 

 

PRELIMINARY EARTHQUAKE PARAMETERS

---------------------------------

 

* MAGNITUDE 7.4

* ORIGIN TIME 2334 UTC JUL 17 2017

* COORDINATES 54.2 NORTH 169.2 EAST

* DEPTH 48 KM / 30 MILES

* LOCATION KOMANDORSKIYE OSTROVA RUSSIA REGION

 

 

EVALUATION

----------

 

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.4 OCCURRED IN

THE KOMANDORSKIYE OSTROVA, RUSSIA REGION AT 2334 UTC ON

MONDAY JULY 17 2017.

 

* BASED ON THE PRELIMINARY EARTHQUAKE PARAMETERS... HAZARDOUS

TSUNAMI WAVES ARE POSSIBLE FOR COASTS LOCATED WITHIN 300 KM

OF THE EARTHQUAKE EPICENTER.

 

 

TSUNAMI THREAT FORECAST

-----------------------

 

* HAZARDOUS TSUNAMI WAVES FROM THIS EARTHQUAKE ARE POSSIBLE

WITHIN 300 KM OF THE EPICENTER ALONG THE COASTS OF

 

RUSSIA.

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Magnitude do terremoto na Russia foi revisado pra 7.8

Alerta de tsunami emitido pra Guam, Havaí, Japão e Rússia

 

TSUNAMI MESSAGE NUMBER 2

NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI

0014 UTC TUE JUL 18 2017

 

...PTWC TSUNAMI THREAT MESSAGE...

 

 

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

 

THIS MESSAGE IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE

UNESCO/IOC PACIFIC TSUNAMI WARNING AND MITIGATION SYSTEM AND IS

MEANT FOR NATIONAL AUTHORITIES IN EACH COUNTRY OF THAT SYSTEM.

 

NATIONAL AUTHORITIES WILL DETERMINE THE APPROPRIATE LEVEL OF

ALERT FOR EACH COUNTRY AND MAY ISSUE ADDITIONAL OR MORE REFINED

INFORMATION.

 

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

 

THE TSUNAMI FORECAST IS UPDATED IN THIS MESSAGE.

 

NOTE REVISED EARTHQUAKE MAGNITUDE IS 7.8

 

PRELIMINARY EARTHQUAKE PARAMETERS

---------------------------------

 

* MAGNITUDE 7.8

* ORIGIN TIME 2334 UTC JUL 17 2017

* COORDINATES 54.5 NORTH 168.9 EAST

* DEPTH 10 KM / 6 MILES

* LOCATION KOMANDORSKIYE OSTROVA RUSSIA REGION

 

 

EVALUATION

----------

 

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.8 OCCURRED IN

THE KOMANDORSKIYE OSTROVA, RUSSIA REGION AT 2334 UTC ON

MONDAY JULY 17 2017.

 

* BASED ON ALL AVAILABLE DATA... HAZARDOUS TSUNAMI WAVES ARE

FORECAST FOR SOME COASTS.

 

 

TSUNAMI THREAT FORECAST...UPDATED

---------------------------------

 

* TSUNAMI WAVES ARE FORECAST TO BE LESS THAN 0.3 METERS ABOVE

THE TIDE LEVEL FOR THE COASTS OF

 

GUAM... HAWAII... JAPAN... JOHNSTON ATOLL... MARSHALL

ISLANDS... MIDWAY ISLAND... NORTHERN MARIANAS...

NORTHWESTERN HAWAIIAN ISLANDS... RUSSIA... WAKE ISLAND...

AND YAP.

 

 

* ACTUAL AMPLITUDES AT THE COAST MAY VARY FROM FORECAST

AMPLITUDES DUE TO UNCERTAINTIES IN THE FORECAST AND LOCAL

FEATURES. IN PARTICULAR MAXIMUM TSUNAMI AMPLITUDES ON ATOLLS

AND AT LOCATIONS WITH FRINGING OR BARRIER REEFS WILL LIKELY

BE MUCH SMALLER THAN THE FORECAST INDICATES.

 

* FOR OTHER AREAS COVERED BY THIS PRODUCT A FORECAST HAS NOT

YET BEEN COMPUTED. THE FORECAST WILL BE EXPANDED IF

NECESSARY IN SUBSEQUENT PRODUCTS.

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Segundo o boletim final do PTWC, todas as ameaças de tsunamis desse terremoto passaram.

 

EVALUATION

----------

 

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.8 OCCURRED IN

THE KOMANDORSKIYE OSTROVA, RUSSIA REGION AT 2334 UTC ON

MONDAY JULY 17 2017.

 

* BASED ON ALL AVAILABLE DATA... THE TSUNAMI THREAT FROM THIS

EARTHQUAKE HAS NOW PASSED.

 

 

TSUNAMI THREAT FORECAST...UPDATED

---------------------------------

 

* THERE IS NO LONGER A TSUNAMI THREAT FROM THIS EARTHQUAKE.

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