A tsunami (津波?) (English pronunciation: /(t)suːˈnɑːmi/) is a series of water waves In fluid dynamics, wind waves or, more precisely, wind-generated waves are surface waves that occur on the free surface of oceans, seas, lakes, rivers, and canals or even on small puddles and ponds. They usually result from the wind blowing over a vast enough stretch of fluid surface. Some waves in the oceans can travel thousands of miles before (called a tsunami wave train[1]) that is caused by the displacement of a large volume The volume of any solid, liquid, gas, plasma, or vacuum is how much three-dimensional space it occupies, often quantified numerically. One-dimensional figures and two-dimensional shapes (such as squares) are assigned zero volume in the three-dimensional space. Volume is commonly presented in units such as cubic meters, cubic centimeters, liters, of a body of water A body of water or waterbody is any significant accumulation of water, usually covering the Earth or another planet. The term body of water most often refers to large accumulations of water, such as oceans, seas, and lakes, but it may also include smaller pools of water such as ponds, puddles or wetlands. Rivers, streams, canals, and other, such as an ocean An ocean (from Greek Ωκεανός, Okeanos ) is a major body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface (~3.61 X 1014 m2) is covered by ocean, a continuous body of water that is customarily divided into several principal oceans and smaller seas. The original Japanese term literally translates as "harbor wave." Tsunamis are a frequent occurrence in Japan; approximately 195 events have been recorded.[2] Due to the immense volumes of water and energy involved, tsunamis can devastate coastal regions. Casualties can be high because the waves move faster than humans can run.
Earthquakes An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves. Earthquakes are recorded with a seismometer, also known as a seismograph. The moment magnitude (or the related and mostly obsolete Richter magnitude) of an earthquake is conventionally reported, with magnitude 3 or lower earthquakes being, volcanic eruptions During a volcanic eruption, lava, tephra , and various gases, are expelled from a volcanic vent or fissure and other underwater explosions An underwater explosion, also known as an UNDEX, is an explosion beneath the surface of water. The type of explosion may be chemical or nuclear. They are categorized in accordance with their depth beneath the water's surface, because this has a strong influence on their effects (detonations of nuclear devices A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission or a combination of fission and fusion. Both reactions release vast quantities of energy from relatively small amounts of matter; a modern thermonuclear weapon weighing little more than a thousand kilograms can produce an explosion at sea), landslides A landslide or landslip is a geological phenomenon which includes a wide range of ground movement, such as rock falls, deep failure of slopes and shallow debris flows, which can occur in offshore, coastal and onshore environments. Although the action of gravity is the primary driving force for a landslide to occur, there are other contributing and other mass movements Mass wasting, also known as slope movement or mass movement, is the geomorphic process by which soil, regolith, and rock move downslope under the force of gravity. Types of mass wasting include creep, slides, flows, topples, and falls, each with its own characteristic features, and taking place over timescales from seconds to years. Mass wasting, bolide impacts An impact event is the collision of a large meteorite, asteroid, comet, or other celestial object with the Earth or another planet. Impact events have been a plot and background element in science fiction since knowledge of real impacts became established in the scientific mainstream, and other disturbances above or below water all have the potential to generate a tsunami.
The Greek Ancient Greece is the civilization belonging to the period of Greek history lasting from the Archaic period of the 8th to 6th centuries BC to 146 BC and the Roman conquest of Greece after the Battle of Corinth. At the center of this time period is Classical Greece, which flourished during the 5th to 4th centuries, at first under Athenian historian Thucydides Thucydides (Greek Θουκυδίδης, Thoukydídēs) was a Greek historian and author of the History of the Peloponnesian War, which recounts the 5th century BC war between Sparta and Athens to the year 411 BC. Thucydides has been dubbed the father of "scientific history" due to his strict standards of evidence-gathering and analysis was the first to relate tsunami to submarine earthquakes A submarine, undersea, or underwater earthquake is an earthquake that occurs underwater at the bottom of a body of water, especially an ocean. They are the leading cause of tsunamis. The magnitude can be measured scientifically by the use of either the Richter scale or the Mercalli scale,[3][4] but understanding of tsunami's nature remained slim until the 20th century and is the subject of ongoing research. Many early geological Geology is the science and study of the solid and liquid matter that constitutes the Earth. The field of geology encompasses the study of the composition, structure, physical properties, dynamics, and history of Earth materials, and the processes by which they are formed, moved, and changed. The field is a major academic discipline, and is also, geographical Geography is the study of the Earth and its lands, features, inhabitants, and phenomena. A literal translation would be "to describe or write about the Earth". The first person to use the word "geography" was Eratosthenes (276-194 B.C.). Four historical traditions in geographical research are the spatial analysis of natural and, and oceanographic Oceanography , also called oceanology or marine science, is the branch of Earth science that studies the ocean. It covers a wide range of topics, including marine organisms and ecosystem dynamics; ocean currents, waves, and geophysical fluid dynamics; plate tectonics and the geology of the sea floor; and fluxes of various chemical substances and texts refer to tsunamis as "seismic sea waves."
Some meteorological Meteorology is the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting . Studies in the field stretch back millennia, though significant progress in meteorology did not occur until the eighteenth century. The nineteenth century saw breakthroughs occur after observing networks developed across conditions, such as deep depressions A low pressure area, or "low", is a region where the atmospheric pressure at sea level is lower in relation to surrounding locations. Low pressure systems form under areas of wind divergence which occur in upper levels of the troposphere. Within the field of atmospheric dynamics, these areas of wind divergence aloft are either on the that cause tropical cyclones A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones feed on heat released when moist air rises, resulting in condensation of water vapor contained in the moist air. They are fueled by a different heat mechanism than other cyclonic, can generate a storm surge Storm surge is an offshore rise of water associated with a low pressure weather system, typically a tropical cyclone. Storm surge is caused primarily by high winds pushing on the ocean's surface. The wind causes the water to pile up higher than the ordinary sea level. Low pressure at the center of a weather system also has a small secondary effect,, called a meteotsunami, which can raise tides Tides are the rise and fall of sea levels caused by the combined effects of the rotation of the Earth and the gravitational forces exerted by the Moon and the Sun. The tides occur with a period of approximately 12 and a half hours and are influenced by the shape of the near-shore bottom several metres above normal levels. The displacement comes from low atmospheric pressure Atmospheric pressure is the force per unit area exerted against a surface by the weight of air above that surface in the Earth's atmosphere. In most circumstances atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point. Low pressure areas have less atmospheric mass above within the centre of the depression. As these storm surges Storm surge is an offshore rise of water associated with a low pressure weather system, typically a tropical cyclone. Storm surge is caused primarily by high winds pushing on the ocean's surface. The wind causes the water to pile up higher than the ordinary sea level. Low pressure at the center of a weather system also has a small secondary effect, reach shore, they may resemble (though are not) tsunamis, inundating vast areas of land. Such a storm surge inundated Burma Burma, officially the Union of Myanmar, is the largest country by geographical area in Indochina . The country is bordered by China on the north-east, Laos on the east, Thailand on the south-east, Bangladesh on the west, India on the north-west and the Bay of Bengal to the south-west with the Andaman Sea defining its southern periphery. One-third (Myanmar Burma, officially the Union of Myanmar, is the largest country by geographical area in Indochina . The country is bordered by China on the north-east, Laos on the east, Thailand on the south-east, Bangladesh on the west, India on the north-west and the Bay of Bengal to the south-west with the Andaman Sea defining its southern periphery. One-third) in May 2008.
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KMTR NewsSource 16
Bandon (KMTR) - Long before the tsunami advisory for the Oregon coast this weekend, the city of Bandon was planning a "TsunamiReady, TsunamiPrepared ...
(PTWC)
hu, 18 Feb 2010 01:23:34 GM
Message Time: 17 Feb 2010 03:23 pm HST. Message Num: Message Text: click to read. Message Type: . Tsunami. Information. Warning: none. Watch: none. ETAs / Obs: none. Origin Time: 17 Feb 2010 3:13 pm HST. Magnitude: 6.8 Mwp (reviewed by ...
Q. According to reports the tsunami hit Samoa at 6.48pm. What time would that be in the uk?
Asked by wizzbang1972 - Wed Sep 30 16:41:00 2009 - - 1 Answers - 0 Comments
A. According to the news linked below, the tsunami struck the Samoa and American Samoa at 1748 GMT on September 29. I don't know if you are in or are using daylight saving time, but in standard time, that should be 5:48 PM in the UK.
Answered by UALog - Thu Oct 1 06:34:40 2009
