TSUNAMI

jofizo

Aerial view of Valdez, Alaska, showing extent of inundation along coastline. The town of Valdez was situated on the edge of an outwash delta about 150 km from the generating area. During the earthquake, the shaking caused failure of the unstable, water-saturated material, and a slice, approximately 1,220 m long and 183 m wide, slid into the sea and carried the dock area and portions of the town with it. The slide generated a wave which slammed into the waterfront within two to three minutes of the onset of the earthquake. This wave demolished what was left of the waterfront facilities, caused the loss of the fishing fleet, and penetrated about two blocks into the town. Property damage of $15 million was incurred at Valdez and there were 30 fatalities. Photograph Credit: U.S. Department of the Interior. Source: National Geophysical Data Center.

jofizo

Aerial view of Seward, Alaska shows damage to oil storage tank which caught fire and leaked their contents.

jofizo

View of the north end of Resurrection Bay at Seward, Alaska, about 75 km from the epicenter. An overturned ship, demolished Texaco chemical truck, and torn-up dock strewn with logs and scrap metal are visible. At Seward, a community of about 2,300, a section of the waterfront slid into Resurrection Bay. Waves spread in all directions destroying the Alaska railroad docks, washing out railroad and highway bridges, and piling railroad rolling stock into giant windrows of wreckage. It spread flaming petroleum over the waterfront, igniting the rolling stock, the electrical generation plant, and some residences. Resurrection Bay received $14.6 million in damage. Eleven fatalities occurred in the Seward area. Photograph Credit: U.S. Department of the Interior. Source: National Geophysical Data Center.

jofizo

Originally posted by kulit at 6-9-2004 01:34 PM:
wah devastating
cam dilanda hurricane je

mungkin ianya jauh lebih hebat dari hurricane sebab tiada satu bendapun yg dapat menalang dari hempasan ombak besar dari arah laut....ombak yg setinggi bangunan.... cam citer the day after tomorrow ...

jofizo

Pada masa kini tidak terdapat banyak yang dapat dibuat oleh mereka yang berhadapan dengan gelombang tsunami. Di kepulauan Jepun, kerajaan telah membina benteng dipersisiran pantai untuk menahan bandar dari bahaya gelombang tsunami, tetapi bagi  orang perseorangan, tidak banyak yang dapat dibuat oleh mereke kecuali mengosongkan kawasan yang dijangka akan dilanda tsunami.

Penduduk dipersisiran pantai dikawasan yang sering menghadapi tsunami juga perlu pergi kearah tanah tinggi apabila berlaku gempa bumi atau letusan gunung berapi bagi yang tinggal berhampiran gunung berapi. Mereka juga perlu mengelakkan dari pergi ke arah pantai sekiranya berlaku tanda-tanda awal tsunami seperti air yang surut secara tiba-tiba.

Tsunami juga mampu melanda beberapa kali, oleh itu adalah tidak digalakkan untuk pergi ke kawasan pantai untuk melihat kerosakan selepas ombak tsunami pertama melanda. Ini adalah untuk mengelakkan dilanda ombak tsunami yang berikutnya.

jofizo

Tsunamis that strike coastal locations in the Pacific Ocean Basin are most always caused by earthquakes. These earthquakes might occur far away or near where you live.

Some tsunamis can be very large. In coastal areas their height can be as great as 30 feet or more (100 feet in extreme cases), and they can move inland several hundred feet.

All low-lying coastal areas can be struck by tsunamis.

A tsunami consists of a series of waves. Often the first wave may not be the largest. The danger from a tsunami can last for several hours after the arrival of the first wave.

Tsunamis can move faster than a person can run.

Sometimes a tsunami causes the water near the shore to recede, exposing the ocean floor.

The force of some tsunamis is enormous. Large rocks weighing several tons along with boats and other debris can be moved inland hundreds of feet by tsunami wave activity. Homes and other buildings are destroyed. All this material and water move with great force and can kill or injure people.

Tsunamis can occur at any time, day or night.

Tsunamis can travel up rivers and streams that lead to the ocean.

jofizo

Be aware of tsunami facts. This knowledge could save your life! Share this knowledge with your relatives and friends. It could save their lives!

If you are in school and you hear there is a tsunami warning, you should follow the advice of teachers and other school personnel.

If you are at home and hear there is a tsunami warning, you should make sure your entire family is aware of the warning. Your family should evacuate your house if you live in a tsunami evacuation zone. Move in an orderly, calm and safe manner to the evacuation site or to any safe place outside your evacuation zone. Follow the advice of local emergency and law enforcement authorities.

If you are at the beach or near the ocean and you feel the earth shake, move immediately to higher ground, DO NOT wait for a tsunami warning to be announced. Stay away from rivers and streams that lead to the ocean as you would stay away from the beach and ocean if there is a tsunami. A regional tsunami from a local earthquake could strike some areas before a tsunami warning could be announced.

Tsunamis generated in distant locations will generally give people enough time to move to higher ground. For locally-generated tsunamis, where you might feel the ground shake, you may only have a few minutes to move to higher ground.

High, multi-story, reinforced concrete hotels are located in many low-lying coastal areas. The upper floors of these hotels can provide a safe place to find refuge should there be a tsunami warning and you cannot move quickly inland to higher ground. Local Civil Defense procedures may, however, not allow this type of evacuation in your area. Homes and small buildings located in low-lying coastal areas are not designed to withstand tsunami impacts. Do not stay in these structures should there be a tsunami warning.

Offshore reefs and shallow areas may help break the force of tsunami waves, but large and dangerous wave can still be a threat to coastal residents in these areas. Staying away from all low-lying areas is the safest advice when there is a tsunami warning.

jofizo

Since tsunami wave activity is imperceptible in the open ocean, do not return to port if you are at sea and a tsunami warning has been issued for your area. Tsunamis can cause rapid changes in water level and unpredictable dangerous currents in harbors and ports.

If there is time to move your boat or ship from port to deep water (after a tsunami warning has been issued), you should weigh the following considerations:

Most large harbors and ports are under the control of a harbor authority and/or a vessel traffic system. These authorities direct operations during periods of increased readiness (should a tsunami be expected), including the forced movement of vessels if deemed necessary. Keep in contact with the authorities should a forced movement of vessel be directed.

Smaller ports may not be under the control of a harbor authority. If you are aware there is a tsunami warning and you have time to move your vessel to deep water, then you may want to do so in an orderly manner, in consideration of other vessels. Owners of small boats may find it safest to leave their boat at the pier and physically move to higher ground, particularly in the event of a locally-generated tsunami. Concurrent severe weather conditions (rough seas outside of safe harbor) could present a greater hazardous situation to small boats, so physically moving yourself to higher ground may be the only option.
Damaging wave activity and unpredictable currents can effect harbors for a period of time following the initial tsunami impact on the coast. Contact the harbor authority before returning to port making sure to verify that conditions in the harbor are safe for navigation and berthing.

eva

jo... takutnyaaaaaaaaaaaa

jofizo

takut-takut jugak...... tapi teringin jugak nak tengok ombak yg besar tu....

eva

Originally posted by jofizo at 16-9-2004 00:18:
takut-takut jugak...... tapi teringin jugak nak tengok ombak yg besar tu....

gi US la sekarang jo.. banyak wave tidal mencecah bermeter meter :cak:

klau nak sangat tengok tsunami tu.. u can go to serawak.. i dun remember musim apa eiks :hmm: but somewhere la around sibu-mukah yg mengadap laut china selatan coz mesti once in ever year akan terjadi tsunami ;)

jofizo

:hmm::hmm::hmm:....... yg kat S'wak tu pernah masuk berita. ia tentang fenomena ombak besar kat sg di s'wak tu, siap ada pesta lagi....

eva

Originally posted by jofizo at 17-9-2004 00:37:
:hmm::hmm::hmm:....... yg kat S'wak tu pernah masuk berita. ia tentang fenomena ombak besar kat sg di s'wak tu, siap ada pesta lagi....

yeah btol.. memang kejadian tsunami tu ramai yg meraikannya.. lupa la pulak nama dia aper..

KasutBaru

very informative....
aku jarang tinguk laut..kalau dpt pi pantai jerk mesti jakun sikit....so kalu dpt tinguk tsunami nih mesti laaagi jakun...tapi takut aaa...

alphawolf

Yang kat Sarawak tu klu tak salah dipanggil tidal bore..hanya ada beberapa tempat aje ada fenomena tu.

eva

Originally posted by alphawolf at 20-10-2004 00:46:
Yang kat Sarawak tu klu tak salah dipanggil tidal bore..hanya ada beberapa tempat aje ada fenomena tu.

;) btol... 10 mrkh buat alpha :clap:

eva

Originally posted by alphawolf at 20-10-2004 00:46:
Yang kat Sarawak tu klu tak salah dipanggil tidal bore..hanya ada beberapa tempat aje ada fenomena tu.

oh ok now alpha.. i got info about 'tsunami' kat serawak tu.. known as 'ombak benak'  nie explanation about ombak tu k

[quote]Tarikan dan Pelancongan

Pesta Benak

Bandar Sri Aman terkenal dengan fenonema 揃enak 搒atu kejadian semulajadi yang menakjubkan. Benak atau ombak besar yang mengalun membawa air pasang di Batang Lupar boleh dilihat mengikut tarikh catatan 憄aras air tinggi

hulubelang

nf:nf: Emmm...Hulu rasa kalau masuk bab bab lautan nie
..Hulu phobia sikit....terutamanya ombak ombak beso

puterikhaleeda

iskk... bila puteri baca tajuk... ingat kek tsunami...

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