Tsunameter and buoys used by DART system

The Pacific Tsunami Warning Center (PTWC), operated by NOAA in Ewa Beach, Hawaii, USA, is one of two tsunami warning centers in the United States. PTWC is also part of an international tsunami warning system (TWS) program. PTWC serves is the operational center for TWS of the Pacific issuing bulletins and warnings to participating members and other nations in the Pacific Ocean area of responsibility . It is also the regional (local) warning center for the State of Hawai'i. The other tsunami warning center is the West Coast/Alaska Tsunami Warning Center (WC/ATWC) in Palmer, Alaska, serving all costal regions of Canada and the United States except Hawai'i. Image File history File linksMetadata Download high-resolution version (700x927, 519 KB)Buoys used as part of the Deep-ocean Assessment and Reporting of Tsunamis (DART) system, part of an expanded tsunami warning system. ... Image File history File linksMetadata Download high-resolution version (700x927, 519 KB)Buoys used as part of the Deep-ocean Assessment and Reporting of Tsunamis (DART) system, part of an expanded tsunami warning system. ... The National Oceanic and Atmospheric Administration (NOAA) is a scientific agency of the United States Department of Commerce focused on the conditions of the oceans and the atmosphere. ... Ewa Beach is a town and census-designated place (CDP) located in Ewa District and the City & County of Honolulu along the leeward coast of Oahu in Hawaii. ... A tsunami warning system is a system to detect tsunamis and issue warnings to prevent loss of life. ... State nickname: The Aloha State Other U.S. States Capital Honolulu Largest city Honolulu Governor Linda Lingle Official languages Hawaiian and English Area 28,337 km² (43rd)  - Land 16,649 km²  - Water 11,672 km² (41. ... Palmer is a city located in Matanuska-Susitna Borough, Alaska. ...

PTWC was established in 1949, following the 1946 Aleutian Island earthquake and a tsunami that resulted in 165 casualties in Hawaii and Alaska. After the Indian Ocean tsunami, PTWC has extended its warning guidance to include the Indian Ocean, Caribbean and adjacent regions until regional capability is in place for these areas. These regional centers will form a global tsunami warning system once they are in operation. 1949 (MCMXLIX) was a common year starting on Saturday (the link is to a full 1949 calendar). ... Year 1946 (MCMXLVI) was a common year starting on Tuesday. ... Aleutian Island earthquake was an earthquake near the Aleutian Islands on April 1, 1946, and was followed by a Pacific-wide tsunami wave. ... Official language(s) English Capital Juneau Largest city Anchorage Area  Ranked 1st  - Total 663,267 sq mi (1,717,855 km²)  - Width 808 miles (1,300 km)  - Length 1,479 miles (2,380 km)  - % water 13. ... Animation of the tsunami caused by the earthquake (see also the full-length version) From NOAA/PMEL. The 2004 Indian Ocean earthquake, known by the scientific community as the Sumatra-Andaman earthquake, was an undersea earthquake that occurred at 00:58:53 UTC (07:58:53 local time) on December...

The Center uses seismic data as its starting point, but then takes into account oceanographic data when calculating possible threats. Tide gauges in the area of the earthquake are checked to establish if a tsunami wave has formed. The centre then forecasts the future of the tsunami, issuing warnings to at-risk areas all around the Pacific basin if needed. There are never false alarms — if the PTWC issues a tsunami warning for a particular area, the wave is already on its way and will hit. As it takes more time for tsunamis to travel trans-oceanic distances, the PTWC can afford to take the time to make sure of its forecasts. Oceanography (from Ocean + Greek γράφειν = write), also called oceanology and marine science is the study of the earths oceans and their interlinked ecosystems and chemical and physical processes. ... Tides are the cyclic rising and falling of Earths ocean surface caused by the tidal forces of the Moon and the Sun acting on the Earth. ...

Deep ocean tsunami detection

In 1995 the US National Oceanic and Atmospheric Administration (NOAA) began developing the Deep-ocean Assessment and Reporting of Tsunamis (DART) system. By 2001 an array of six stations had been deployed in the Pacific Ocean. [1] 1995 (MCMXCV) was a common year starting on Sunday of the Gregorian calendar. ... Motto: (Out Of Many, One) (traditional) In God We Trust (1956 to date) Anthem: The Star-Spangled Banner Capital Washington D.C. Largest city New York City None at federal level (English de facto) Government Federal constitutional republic  - President George Walker Bush (R)  - Vice President Dick Cheney (R) Independence from... The National Oceanic and Atmospheric Administration (NOAA) is a scientific agency of the United States Department of Commerce focused on the conditions of the oceans and the atmosphere. ... The Deep-ocean Assessment and Reporting of Tsunamis (DART) system is a component of an enhanced tsunami warning system. ... This article is about the year 2001. ...

Beginning in 2005, as a result of heightened awareness due to the tsunamis caused by the 2004 Indian Ocean earthquake, plans were announced to add 32 more DART buoys to be operational by mid-2007. [2] 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... Tsunami strikes Ao Nang, Thailand. ... 2007 (MMVII) is the current year from UTC-7 east to the international date line. ...

These stations give detailed information about tsunamis while they are still far off shore. Each station consists of a sea-bed bottom pressure recorder (at a depth of about 6000 m) which detects the passage of a tsunami and transmits the data to a surface buoy via acoustic modem. The surface buoy then radios the information to the PTWC via the GOES satellite system. The bottom pressure recorder lasts for two years while the surface buoy is replaced every year. The system has considerably improved the forecasting and warning of tsunamis in the Pacific. A sea lion on navigational buoy #14 in San Diego Harbor Green can #11 near the mouth of the Saugatuck river. ... Goes is a municipality and a city in the southwestern Netherlands, in Zuid-Beveland. ... MILSTAR:A communication satellite A satellite is any object that orbits another object (which is known as its primary). ...

External links

• Pacific Tsunami Warning Center
• West Coast and Alaska Tsunami Warning Center
• DART
• How the Pacific Tsunami Warning System works
• Envirtech Tsunami Warning System, based on real time seafloor observatories measuring seismic waves and sea levels
• U.S. Center Provides Interim Early Warning for Indian Ocean
• IOC: Towards a Tsunami Warning System in the Indian Ocean