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1870 Charlevoix Earthquake
The 1870 Charlevoix earthquake occurred on 20 October in the Canadian province of Quebec. It had a moment magnitude of 6.6 and a Modified Mercalli intensity rating of X (''Extreme''). The town of Baie-Saint-Paul was seriously damaged by the event, with the loss of six lives. Effects from the earthquake were felt as far as Virginia and along the New England coast of the United States. Tectonic setting The Charlevoix Seismic Zone (CSZ) lies along the St. Lawrence River, northeast of Quebec City. Although eastern Canada has relatively infrequent earthquakes, due to its location away from active plate boundaries, the CSZ is its most active part, with five earthquakes of an estimated magnitude of 6 or greater since historical records began. Focal mechanisms for earthquakes in this zone are consistent with rupture on both reverse and strike-slip faults. The main structures of the area are faults of the Saint Lawrence rift system that run parallel to the river, formed during the break ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by total area. Its southern and western border with the United States, stretching , is the world's longest binational land border. Canada's capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. Indigenous peoples have continuously inhabited what is now Canada for thousands of years. Beginning in the 16th century, British and French expeditions explored and later settled along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypocenter
In seismology, a hypocenter or hypocentre () is the point of origin of an earthquake or a subsurface nuclear explosion. A synonym is the focus of an earthquake. Earthquakes An earthquake's hypocenter is the position where the strain energy stored in the rock is first released, marking the point where the fault begins to rupture.''The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is the point directly above it at the surface of the Earth. Also commonly termed the focus.'' This occurs directly beneath the epicenter, at a distance known as the ''hypocentral depth'' or ''focal depth''. The focal depth can be calculated from measurements based on seismic wave phenomena. As with all wave phenomena in physics, there is uncertainty in such measurements that grows with the wavelength so the focal depth of the source of these long-wavelength (low frequency) waves is difficult to determine exactly. Very strong earthquakes radiate a large fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saguenay River
__NOTOC__ The Saguenay River () is a major river of Quebec, Canada. It drains Lac Saint-Jean in the Laurentian Highlands, leaving at Alma and running east; the city of Saguenay is located on the river. It drains into the Saint Lawrence River. Tadoussac, founded as a French colonial trading post in 1600, is located on the northeast bank at this site. The river has a very high flow-rate and is bordered by steep cliffs associated with the Saguenay Graben. Tide waters flow in its fjord upriver as far as Chicoutimi (about 100 kilometres). Many Beluga whales breed in the cold waters at its mouth, making Tadoussac a popular site for whale watching and sea kayaking; Greenland sharks also frequent the depths of the river. The area of the confluence of the Saguenay and Saint Lawrence is protected by the Saguenay–St. Lawrence Marine Park, one of Canada's national parks. History The Saguenay River was used as an important trade route into the interior for the First Nations people of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquefaction
In materials science, liquefaction is a process that generates a liquid from a solid or a gas or that generates a non-liquid phase which behaves in accordance with fluid dynamics. It occurs both naturally and artificially. As an example of the latter, a "major commercial application of liquefaction is the liquefaction of air to allow separation of the constituents, such as oxygen, nitrogen, and the noble gases." Another is the conversion of solid coal into a liquid form usable as a substitute for liquid fuels. Geology In geology, soil liquefaction refers to the process by which water-saturated, unconsolidated sediments are transformed into a substance that acts like a liquid, often in an earthquake. Soil liquefaction was blamed for building collapses in the city of Palu, Indonesia in October 2018. In a related phenomenon, liquefaction of bulk materials in cargo ships may cause a dangerous shift in the load. Physics and chemistry In physics and chemistry, the phase transiti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landslide
Landslides, also known as landslips, are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, deep-seated grade (slope), slope failures, mudflows, and debris flows. Landslides occur in a variety of environments, characterized by either steep or gentle slope gradients, from mountain ranges to coastal cliffs or even underwater, in which case they are called submarine landslides. Gravity is the primary driving force for a landslide to occur, but there are other factors affecting slope stability that produce specific conditions that make a slope prone to failure. In many cases, the landslide is triggered by a specific event (such as a heavy rainfall, an earthquake, a slope cut to build a road, and many others), although this is not always identifiable. Causes Landslides occur when the slope (or a portion of it) undergoes some processes that change its condition from stable to unstable. This is essentially due to a decrease in the She ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capitale-Nationale
Capitale-Nationale (; en, National Capital region) is one of the 17 List of Quebec regions, administrative regions of Quebec. It is anchored by the provincial capital, Quebec City, and is largely coextensive with that city's Communauté métropolitaine de Québec, metropolitan area. It has a land area of 18,797.45 km2. It reported a total resident population of 729,997 as of the Canada 2016 Census, with Quebec City having 73.7 percent of the total. Prior to January 2000, it was known as the Québec administrative region. Administrative divisions Regional county municipalities Equivalent territory Independent parish municipality * Notre-Dame-des-Anges, Quebec, Notre-Dame-des-Anges Native People's Reserve * Wendake, Quebec, Wendake Major communities *Baie-Saint-Paul *Boischatel, Quebec, Boischatel *Donnacona, Quebec, Donnacona *L'Ancienne-Lorette, Quebec, L'Ancienne-Lorette *La Malbaie *Lac-Beauport, Quebec, Lac-Beauport *Pont-Rouge *Quebec City (Quebec City, Ville de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Les Éboulements
Les Éboulements is a municipality in the Capitale-Nationale region of Quebec, Canada. Its population centres include Les Éboulements (located along Route 362 on the plateau overlooking the Saint Lawrence River), Éboulements-Est (at the feet of Mount Éboulements), Cap-aux-Oies, Sainte-Marie-de-Charlevoix, and Saint-Joseph-de-la-Rive ( on the shores of the Saint Lawrence facing Saint-Bernard-sur-Mer). Saint-Joseph-de-la-Rive, formerly known as Les Éboulements-en-Bas and Quai-des-Éboulements, is the departure point for ferries to L'Isle-aux-Coudres. The municipality is member of the Association of Most Beautiful Villages of Quebec due to its country heritage and to the beautiful architecture and character of its houses. Geography Les Éboulements is located in the centre of the Charlevoix impact structure. Mount Éboulements (''Mont des Éboulements''), in the eastern part of the municipality, is considered the central rebound of the earth's crust following moments after th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Survey Of Canada
The Geological Survey of Canada (GSC; french: Commission géologique du Canada (CGC)) is a Canadian federal government agency responsible for performing geological surveys of the country, developing Canada's natural resources and protecting the environment. A branch of the Earth Sciences Sector of Natural Resources Canada, the GSC is the country's oldest scientific agency and was one of its first government organizations. History In September 1841, the Province of Canada legislature passed a resolution that authorized the sum of £1,500 sterling be granted to the government for the estimated expense of performing a geological survey of the province. In 1842, the Geological Survey of Canada was formed to fulfill this request.Christy Vodden (1992)No Stone Unturned: The First 150 years of the Geological Survey of Canada Geological Survey of Canada Web site William Edmond Logan was in Montreal at the time and made it known that he was interested in participating in this survey. G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulletin Of The Seismological Society Of America
''Bulletin of the Seismological Society of America'' (BSSA) is a bimonthly peer reviewed scientific journal published by the Seismological Society of America. The editor-in-chief is Thomas Pratt ( U. S. Geological Survey). The journal covers seismology and related disciplines. Topical coverage includes theory and observation of seismic waves, specific earthquakes, the structure of the Earth, earthquake sources, hazard and risk estimation, and earthquake engineering. Publishing formats include regular papers and short notes. Publication has been continuous since 1911. Abstracting and indexing This journal is indexed by the following services:Hollis Classic Library Harvard College. 2009 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Montreal
Old Montreal (French: ''Vieux-Montréal'') is a historic neighbourhood within the municipality of Montreal in the province of Quebec, Canada. Home to the Old Port of Montreal, the neighbourhood is bordered on the west by McGill Street, on the north by Ruelle des Fortifications, on the east by rue Saint-André, and on the south by the Saint Lawrence River. Following recent amendments, the neighbourhood has expanded to include the Rue des Soeurs Grises in the west, Saint Antoine Street in the north, and Saint Hubert Street in the east. Founded by French settlers in 1642 as Fort Ville-Marie, Old Montreal is home to many structures dating back to the era of New France. The 17th century settlement lends its name to the borough in which the neighbourhood lies, Ville-Marie. In 1964, much of Old Montreal was declared a historic district by the Ministère des Affaires culturelles du Québec. History Early French settlement In 1605, Samuel de Champlain established a fur-tradin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quebec City
Quebec City ( or ; french: Ville de Québec), officially Québec (), is the capital city of the Provinces and territories of Canada, Canadian province of Quebec. As of July 2021, the city had a population of 549,459, and the Communauté métropolitaine de Québec, metropolitan area had a population of 839,311. It is the eleventhList of the largest municipalities in Canada by population, -largest city and the seventhList of census metropolitan areas and agglomerations in Canada, -largest metropolitan area in Canada. It is also the List of towns in Quebec, second-largest city in the province after Montreal. It has a humid continental climate with warm summers coupled with cold and snowy winters. The Algonquian people had originally named the area , an Algonquin language, AlgonquinThe Algonquin language is a distinct language of the Algonquian languages, Algonquian language family, and is not a misspelling. word meaning "where the river narrows", because the Saint Lawrence River na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Lawrence River
The St. Lawrence River (french: Fleuve Saint-Laurent, ) is a large river in the middle latitudes of North America. Its headwaters begin flowing from Lake Ontario in a (roughly) northeasterly direction, into the Gulf of St. Lawrence, connecting the American Great Lakes to the North Atlantic Ocean, and forming the primary drainage outflow of the Great Lakes Basin. The river traverses the Canadian provinces of Ontario and Quebec, as well as the U.S. state of New York, and demarcates part of the international boundary between Canada and the United States. It also provides the foundation for the commercial St. Lawrence Seaway. Names Originally known by a variety of names by local First Nations, the St. Lawrence became known in French as ''le fleuve Saint-Laurent'' (also spelled ''St-Laurent'') in 1604 by Samuel de Champlain. Opting for the ''grande riviere de sainct Laurens'' and ''fleuve sainct Laurens'' in his writings and on his maps, de Champlain supplanted previous Fre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
