seismic data centre
212011 Christchurch earthquake — Christchurch earthquake redirects here. For other uses, see Christchurch earthquake (disambiguation). For the 13 June 2011 aftershock, see June 2011 Christchurch earthquake. February 2011 Christchurch earthquake ChristChurch Cathedral and the… …
22Comprehensive Nuclear-Test-Ban Treaty Organization — For the current activities regarding the CTBT, see Comprehensive Nuclear Test Ban Treaty Organization Preparatory Commission. Opening of an exhibition by the CTBTO entitled Putting an End to Nuclear Explosions . From left to right: Michael… …
23Natural scientific research in Canada — This article outlines the history of natural scientific research in Canada, including mathematics, physics, astronomy, space science, geology, oceanography, chemistry, biology, medical research and psychology. The social sciences are not treated… …
24chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… …
25Tsunami warning system — A tsunami warning system is a system to detect tsunamis and issue warnings to prevent loss of life and property. It consists of two equally important components: a network of sensors to detect tsunamis and a communications infrastructure to issue …
26Dependent States — ▪ 2009 Introduction Europe and the Atlantic. For a list of populated Dependent States, see Table (Dependent States). In May 2008 Ilulissat, Greenland, was the site of an international summit on Arctic sovereignty attended by official… …
27Smiling Buddha — For the religious figure known as the Laughing Buddha, see Budai. Pokhran I Operation Smiling Buddha Country  India Test site Pokhran Period May 1974 …
28Teller-Ulam design — The Teller–Ulam design is a nuclear weapon design which is used in megaton range thermonuclear weapons, and is more colloquially referred to as the secret of the hydrogen bomb . It is named after two of its chief contributors, Hungarian born… …
29Sismologie — La sismologie ou séismologie (ce dernier est un anglicisme de l anglais seismology[1]), étudie les séismes (tremblements de terre) et plus généralement la propagation des ondes à l intérieur de la Terre[2]. La sismologie moderne utilise les… …
30Denmark — /den mahrk/, n. a kingdom in N Europe, on the Jutland peninsula and adjacent islands. 5,268,775; 16,576 sq. mi. (42,930 sq. km). Cap.: Copenhagen. * * * Denmark Introduction Denmark Background: Once the seat of Viking raiders and later a major… …
