Terremoto y tsunami en Japón

Éste es el Boletin de alerta de Tsunami enviado por 

la NOAA después del terremoto de M 8.8 occurrido 

esta madrugada en Japón. 

 TSUNAMI BULLETIN NUMBER 002
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 0643Z 11 MAR 2011

THIS BULLETIN APPLIES TO AREAS WITHIN AND BORDERING THE PACIFIC
OCEAN AND ADJACENT SEAS...EXCEPT ALASKA...BRITISH COLUMBIA...
WASHINGTON...OREGON AND CALIFORNIA.

... A TSUNAMI WARNING AND WATCH ARE IN EFFECT ...

A TSUNAMI WARNING IS IN EFFECT FOR

 JAPAN / RUSSIA / MARCUS IS. / N. MARIANAS / GUAM / WAKE IS. /
 TAIWAN

A TSUNAMI WATCH IS IN EFFECT FOR

 YAP / PHILIPPINES / MARSHALL IS. / BELAU / MIDWAY IS. /
 POHNPEI / CHUUK / KOSRAE / INDONESIA / PAPUA NEW GUINEA /
 NAURU / JOHNSTON IS. / SOLOMON IS. / KIRIBATI / HAWAII

FOR ALL OTHER AREAS COVERED BY THIS BULLETIN... IT IS FOR
INFORMATION ONLY AT THIS TIME.

THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES.  ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE
DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND
ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

 ORIGIN TIME -  0546Z 11 MAR 2011
 COORDINATES -  38.2 NORTH  142.5 EAST
 DEPTH       -  10 KM
 LOCATION    -  NEAR EAST COAST OF HONSHU  JAPAN
 MAGNITUDE   -  8.8

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

 GAUGE LOCATION        LAT   LON    TIME        AMPL         PER
 -------------------  ----- ------  -----  ---------------  -----
 DART 21418           38.7N 148.7E  0619Z   1.08M /  3.5FT  06MIN


 LAT  - LATITUDE (N-NORTH, S-SOUTH)
 LON  - LONGITUDE (E-EAST, W-WEST)
 TIME - TIME OF THE MEASUREMENT (Z IS UTC IS GREENWICH TIME)
 AMPL - TSUNAMI AMPLITUDE MEASURED RELATIVE TO NORMAL SEA LEVEL.
        IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT.
        VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
 PER  - PERIOD OF TIME IN MINUTES(MIN) FROM ONE WAVE TO THE NEXT.

 NOTE - DART MEASUREMENTS ARE FROM THE DEEP OCEAN AND THEY
        ARE GENERALLY MUCH SMALLER THAN WOULD BE COASTAL
         MEASUREMENTS AT SIMILAR LOCATIONS.


EVALUATION

 SEA LEVEL READINGS INDICATE A TSUNAMI WAS GENERATED. IT MAY HAVE
 BEEN DESTRUCTIVE ALONG COASTS NEAR THE EARTHQUAKE EPICENTER AND
 COULD ALSO BE A THREAT TO MORE DISTANT COASTS. AUTHORITIES SHOULD
 TAKE APPROPRIATE ACTION IN RESPONSE TO THIS POSSIBILITY. THIS
 CENTER WILL CONTINUE TO MONITOR SEA LEVEL DATA TO DETERMINE THE
 EXTENT AND SEVERITY OF THE THREAT.

 FOR ALL AREAS - WHEN NO MAJOR WAVES ARE OBSERVED FOR TWO HOURS
 AFTER THE ESTIMATED TIME OF ARRIVAL OR DAMAGING WAVES HAVE NOT
 OCCURRED FOR AT LEAST TWO HOURS THEN LOCAL AUTHORITIES CAN ASSUME
 THE THREAT IS PASSED. DANGER TO BOATS AND COASTAL STRUCTURES CAN
 CONTINUE FOR SEVERAL HOURS DUE TO RAPID CURRENTS. AS LOCAL
 CONDITIONS CAN CAUSE A WIDE VARIATION IN TSUNAMI WAVE ACTION THE
 ALL CLEAR DETERMINATION MUST BE MADE BY LOCAL AUTHORITIES.

ESTIMATED INITIAL TSUNAMI WAVE ARRIVAL TIMES AT FORECAST POINTS
WITHIN THE WARNING AND WATCH AREAS 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
SUCCESSIVE WAVES CAN BE FIVE MINUTES TO ONE HOUR.

 LOCATION         FORECAST POINT     COORDINATES     ARRIVAL TIME
 --------------------------------    ------------    ------------
 JAPAN            KATSUURA           35.1N 140.3E    0635Z 11 MAR
                  KUSHIRO            42.9N 144.3E    0642Z 11 MAR
                  HACHINOHE          40.5N 141.5E    0700Z 11 MAR
                  SHIMIZU            32.8N 133.0E    0756Z 11 MAR
                  OKINAWA            26.2N 127.8E    0912Z 11 MAR
 RUSSIA           URUP_IS            46.1N 150.5E    0714Z 11 MAR
                  SEVERO_KURILSK     50.8N 156.1E    0834Z 11 MAR
                  PETROPAVLOVSK_K    53.2N 159.6E    0836Z 11 MAR
                  UST_KAMCHATSK      56.1N 162.6E    0840Z 11 MAR
                  MEDNNY_IS          54.7N 167.4E    0903Z 11 MAR
 MARCUS IS.       MARCUS_IS.         24.3N 154.0E    0757Z 11 MAR
 N. MARIANAS      SAIPAN             15.3N 145.8E    0853Z 11 MAR
 GUAM             GUAM               13.4N 144.7E    0909Z 11 MAR
 WAKE IS.         WAKE_IS.           19.3N 166.6E    0925Z 11 MAR
 TAIWAN           HUALIEN            24.0N 121.7E    0932Z 11 MAR
                  HUALIEN            24.0N 121.6E    0933Z 11 MAR
                  TAITUNG            22.7N 121.2E    0936Z 11 MAR
                  CHILUNG            25.2N 121.8E    1004Z 11 MAR
 YAP              YAP_IS.             9.5N 138.1E    0944Z 11 MAR
 PHILIPPINES      PALANAN            17.1N 122.6E    0955Z 11 MAR
                  LEGASPI            13.2N 123.8E    1026Z 11 MAR
                  DAVAO               6.8N 125.7E    1053Z 11 MAR
 MARSHALL IS.     ENIWETOK           11.4N 162.3E    1013Z 11 MAR
                  KWAJALEIN           8.7N 167.7E    1044Z 11 MAR
                  MAJURO              7.1N 171.4E    1124Z 11 MAR
 BELAU            MALAKAL             7.3N 134.5E    1025Z 11 MAR
 MIDWAY IS.       MIDWAY_IS.         28.2N 182.6E    1026Z 11 MAR
 POHNPEI          POHNPEI_IS.         7.0N 158.2E    1027Z 11 MAR
 CHUUK            CHUUK_IS.           7.4N 151.8E    1034Z 11 MAR
 KOSRAE           KOSRAE_IS.          5.5N 163.0E    1043Z 11 MAR
 INDONESIA        GEME                4.6N 126.8E    1049Z 11 MAR
                  BEREBERE            2.5N 128.7E    1058Z 11 MAR
                  WARSA               0.6S 135.8E    1110Z 11 MAR
                  MANOKWARI           0.8S 134.2E    1118Z 11 MAR
                  PATANI              0.4N 128.8E    1124Z 11 MAR
                  JAYAPURA            2.4S 140.8E    1135Z 11 MAR
                  SORONG              0.8S 131.1E    1135Z 11 MAR
 PAPUA NEW GUINE  MANUS_IS.           2.0S 147.5E    1124Z 11 MAR
                  KAVIENG             2.5S 150.7E    1124Z 11 MAR
                  VANIMO              2.6S 141.3E    1134Z 11 MAR
                  WEWAK               3.5S 143.6E    1146Z 11 MAR
                  RABAUL              4.2S 152.3E    1154Z 11 MAR
                  KIETA               6.1S 155.6E    1205Z 11 MAR
                  AMUN                6.0S 154.7E    1211Z 11 MAR
                  MADANG              5.2S 145.8E    1215Z 11 MAR
 NAURU            NAURU               0.5S 166.9E    1149Z 11 MAR
 JOHNSTON IS.     JOHNSTON_IS.       16.7N 190.5E    1202Z 11 MAR
 SOLOMON IS.      PANGGOE             6.9S 157.2E    1221Z 11 MAR
                  FALAMAE             7.4S 155.6E    1222Z 11 MAR
                  MUNDA               8.4S 157.2E    1239Z 11 MAR
 KIRIBATI         TARAWA_IS.          1.5N 173.0E    1228Z 11 MAR

BULLETINS WILL BE ISSUED HOURLY OR SOONER IF CONDITIONS WARRANT.
THE TSUNAMI WARNING AND WATCH WILL REMAIN IN EFFECT UNTIL
FURTHER NOTICE.

THE JAPAN METEOROLOGICAL AGENCY MAY ALSO ISSUE TSUNAMI MESSAGES
FOR THIS EVENT TO COUNTRIES IN THE NORTHWEST PACIFIC AND SOUTH
CHINA SEA REGION.  IN CASE OF CONFLICTING INFORMATION... THE
MORE CONSERVATIVE INFORMATION SHOULD BE USED FOR SAFETY.

THE WEST COAST/ALASKA TSUNAMI WARNING CENTER WILL ISSUE PRODUCTS
FOR ALASKA...BRITISH COLUMBIA...WASHINGTON...OREGON...CALIFORNIA.

Aquí tenéis una imagen de cómo se extiende a lo largo del Pacífico unas 12 horas después (tomada de la página del  Servicio de Información de Emergencias y Desastres Naturales de Hungría http://hisz.rsoe.hu/alertmap/):

Y aquí os pongo otra imagen del sismograma del terremoto y el epicentro del seismo (tomadas de http://bcespquakes.wordpress.com/):

Finalmente un vídeo de cómo la naturaleza, en este caso en forma de tsunami, puede con cualquier elemento creado por el hombre, lo que debería hacernos pensar cuan insignificantes somos a pesar de pensar que somos más importantes que cualquier otro ser vivo o cualquier elemento del Planeta/Universo.

Salu2