| 1755 | Nov 1, 1755 - On November 1, 1755, what is thought to be the strongest earthquake to strike an urban area occurred in Lisbon, Portugal. Although no one knows for certain, the quake may have registered 9.0 on the Richter scale. (Used to measure the magnitude of an earthquake ...On November 1, 1755, what is thought to be the strongest earthquake to strike an urban area occurred in Lisbon, Portugal. Although no one knows for certain, the quake may have registered 9.0 on the Richter scale. (Used to measure the magnitude of an earthquake, the Richter scale has graded steps beginning with one and ending with ten; each step is about 60 times greater than the preceding step.) More than 60000 people died and Lisbon was destroyed.  Show more  Show lesswww.enotes.com/history-fact-finder/natural-man-made-disasters/what-strongest-earthquake-city
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| 1811 | Dec 16, 1811 - On Dec. 16, 1811, three quakes estimated at 8.0 or greater on the Richter scale struck. Other major quakes erupted in the next two months. The quakes caused major landslides and violent upheavals of the ground for hundreds of miles around. The chance that such a ...On Dec. 16, 1811, three quakes estimated at 8.0 or greater on the Richter scale struck. Other major quakes erupted in the next two months. The quakes caused major landslides and violent upheavals of the ground for hundreds of miles around. The chance that such a quake would occur again in the next 50 years is only three in 100, experts say. But a damaging earthquake greater than 6.0 on the Richter scale has a 50-50 chance of striking in the next 10 years and a 90 percent ... Show more Show lessdocs.newsbank.com/g/GooglePM/SL/lib00171,0EB04C6F8DE5E7A3.html
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| 1935 | 1935 - Dr. Charles Richter developed the Richter scale in 1935. While not a precise measure of earthquake energy, it provides a rough comparison of earthquakes. The scale is open-ended in that very small earthquakes may register as minus numbers, and no maximum limit ...Dr. Charles Richter developed the Richter scale in 1935. While not a precise measure of earthquake energy, it provides a rough comparison of earthquakes. The scale is open-ended in that very small earthquakes may register as minus numbers, and no maximum limit exists. So far, no earthquakes have registered above the magnitude 9 range. The Richter scale is logarithmic—meaning that for each unit jump (such as from 6.0 to 7.0 on the scale), the seismic wave amplitude increases 10 ... Show more Show lesswww.realtruth.org/articles/090907-006-weather.html
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| 1976 | Aug 23, 1976 - An earthquake with a force as high as 7.5 on the Richter scale rocked a mountainous region of north central China today. ... The Strasbourg Institute of (;Uohal Physics in France said the China Imvnius struck in Szechuaii and 7.25, and 7.50 on the Richter scale. with 1.7 at the Roval ... pqasb.pqarchiver.com/latimes/access/644318052.html?dids=644318052:644318052&FMT=ABS&FMTS= ABS:AI&type=historic&date=Aug+23%2C+1976&author=&pub...
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| 1985 | Sep 22, 1985 - The scale was developed by US seismologist Charles Richter in 1935, although past records make it possible to use the scale to figure out magnitudes of quakes that occurred as far back as 1906. On the scale, small numerical differences-possibly only a few decimal points-can represent ... pqasb.pqarchiver.com/latimes/access/64538380.html?dids=64538380:64538380&FMT=ABS&FMTS=ABS: FT&type=current&date=Sep+22%2C...Richter+Scale%3A...
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| 1986 | Jul 20, 1986 - (An increase of one number on the Richter scale indicates a 10-fold increase in ground motion.) The most active, and potentially most dangerous, ... Sunday's quake, centered off the coast near Oceanside, registered as moderate on the Richter scale at Pasadena's California Institute of ... pqasb.pqarchiver.com/latimes/access/57984120.html?dids=57984120:57984120&FMT=ABS&FMTS=ABS: FT&type=current&date=Jul+20%2C+1986&author...pub...
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| 1988 | Nov 26, 1988 - That is in same area where an earthquake measuring 4.5 on the Richter scale, which measures ground motion, hit on Wednesday. ... The earthquake was the most severe to hit Canada since 1935, when a tremor registering 6.4 on the Richter scale hit. The Canadian Geological Survey had ... select.nytimes.com/gst/abstract.html?res=FB0716FE3F5C0C758EDDA80994D0484D81
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| 1989 | Oct 18, 1989 - For each numerical increase for example, from a Richter scale 5 to 6 there is a 10-times increase in magnitude or size. ... But as a function of energy released during such snapping actions, each whole-number increase on the Richter scale represents a 31-fold increase. ... docs.newsbank.com/g/GooglePM/SB/lib00167,0EB0D90E85BCBEE5.html
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| 2003 | Dec 27, 2003 - 27 (Xinhuanet) -- An earthquake measuring 6.3 on the Richter scale rocked early Friday the ancient city of Bam in Kerman province of ... 21 -- A powerful quake with a magnitude of 7.6 on the Richter scale killed at least 20 people and injured more than 100 others in Mexico's central ... news.xinhuanet.com/english/2003-12/27/content_1250521.htm
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| 2004 | Mar 6, 2004 - By David Grening. HALLANDALE BEACH, Fla. -- Todd Pletcher says he believes Lion Tamer will eventually be a horse who could be successful around two turns. For now, however, Pletcher does not plan to mess with a good thing. Lion Tamer remained perfect (3 for 3) at seven furlongs, ... espn.go.com/horse/news/2004/0306/1752843.html
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