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Photographer Arnold Genthe took the most famous photo of the destruction of San Francisco by earthquake and fire on April 18, 1906. Looking Down Sacramento Street, San Francisco, April 18, 1906 is a black and white photograph taken by Arnold Genthe in San Francisco, California on the morning of April 18, 1906 in the wake of the 1906 San Francisco earthquake.
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A photograph of a neighborhood watch sign is the foreground color while the rest of the image is the background color. [1] In the document-scanning industry, this is often referred to as "bi-tonal". A binary image is a digital image that consists of pixels that can have one of exactly two colors, usually black and white.
Historical earthquakes is a list of significant earthquakes known to have occurred prior to the early 20th century. As the events listed here occurred before routine instrumental recordings – later followed by seismotomography imaging technique, [1] observations using space satellites from outer space, [2] artificial intelligence (AI)-based early earthquake warnings [3] – they rely mainly ...
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Earthquakes are common in Ecuador. Near the Nazca subduction zone the recorded history of interplate earthquakes spans 80 years. [5] At the time it struck the 1949 Ambato earthquake was the second-worst earthquake in Ecuador's modern history topped only by the 1797 Riobamba earthquake, [6] and the most devastating earthquake in the Western Hemisphere since the 1944 San Juan earthquake. [7]
In its most general sense, the word earthquake is used to describe any seismic event that generates seismic waves. Earthquakes can occur naturally or be induced by human activities, such as mining, fracking, and nuclear tests. The initial point of rupture is called the hypocenter or focus, while the ground level directly above it is the epicenter.
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