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Mission Bay Park
Mission Bay is an artificial, saltwater bay located south of the Pacific Beach community of San Diego, California, created from approximately of historical wetland, marsh, and saltwater bay habitat. The bay is part of the recreational Mission Bay Park, the largest man-made aquatic park in the United States, consisting of , approximately 46% land and 54% water. The combined area makes Mission Bay Park the ninth largest municipally-owned park in the United States. The bay was created to enhance recreational opportunities in San Diego. Wakeboarding, jet skiing, sailing, camping, cycling, jogging, roller skating, skateboarding, and sunbathing are all popular around the bay. Mission Bay Yacht Club, on the west side of the bay, conducts sailing races year-round in the bay and the nearby Pacific Ocean and has produced national sailing champions in many classes. Also on the west side of Mission Bay lieMission Bay Sportcenter which offers boat rentals in Mission Bay and boasts the larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an international border with the Mexico, Mexican state of Baja California to the south. With almost 40million residents across an area of , it is the List of states and territories of the United States by population, largest state by population and List of U.S. states and territories by area, third-largest by area. Prior to European colonization of the Americas, European colonization, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America. European exploration in the 16th and 17th centuries led to the colonization by the Spanish Empire. The area became a part of Mexico in 1821, following Mexican War of Independence, its successful war for independence, but Mexican Cession, was ceded to the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Diego River
The San Diego River is a 52 mi (84 km) river in San Diego County, California. It originates in the Cuyamaca Mountains northwest of the town of Julian, then flows to the southwest until it reaches El Capitan Reservoir, the second-largest reservoir in the river's watershed at . Below El Capitan Dam, the river runs west through Santee and San Diego. While passing through Tierrasanta it goes through Mission Trails Regional Park, one of the largest urban parks in America. It flows near Mission San Diego de Alcalá. The river's valley downstream from there is known as Mission Valley for that reason. The valley forms a transportation corridor for Interstate 8 and the San Diego Trolley's Green Line. The river discharges into the Pacific Ocean near the entrance to Mission Bay, forming an estuary. History The river has changed its course several times in recorded history. Prior to 1821, the San Diego River usually entered San Diego Bay. In the fall of 1821, however, a flood chan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SeaWorld San Diego
SeaWorld San Diego is a theme park in Mission Bay Park in San Diego, California. It is a marine mammal park, oceanarium, public aquarium, and marine animal rehabilitation center. SeaWorld, the theme park's proprietor, is owned and operated by United Parks & Resorts. SeaWorld San Diego is a member of the Association of Zoos and Aquariums (AZA). Adjacent to the property is the Hubbs-SeaWorld Research Institute, which conducts marine biology research and provides educational and outreach programs on marine issues to the general public. History SeaWorld was founded in 1964 by Milton Shedd, Kenneth S. Norris, Ken Norris, David Demott and George Millay. The four graduates of UCLA originally set out to build an underwater restaurant and marine life show. When the underwater restaurant concept was deemed unfeasible, they scrapped those plans and decided to build a park instead, and SeaWorld San Diego was opened on March 21, 1964. With a few dolphins, sea lions, six attractions and 22 a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Tetrachloride
Carbon tetrachloride, also known by many other names (such as carbon tet for short and tetrachloromethane, also IUPAC nomenclature of inorganic chemistry, recognised by the IUPAC), is a chemical compound with the chemical formula CCl4. It is a non-flammable, dense, colourless liquid with a "sweet" chloroform-like odour that can be detected at low levels. It was formerly widely used in fire extinguishers, as a precursor to refrigerants, an anthelmintic and a cleaning agent, but has since been phased out because of environmental and safety concerns. Exposure to high concentrations of carbon tetrachloride can affect the central nervous system and degenerate the liver and kidneys. Prolonged exposure can be fatal. Properties In the carbon tetrachloride molecule, four chlorine atoms are positioned symmetrically as corners in a tetrahedron, tetrahedral configuration joined to a central carbon atom by single covalent bonds. Because of this symmetric geometry, CCl4 is non-polar. methane, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyanide
In chemistry, cyanide () is an inorganic chemical compound that contains a functional group. This group, known as the cyano group, consists of a carbon atom triple-bonded to a nitrogen atom. Ionic cyanides contain the cyanide anion . This anion is extremely poisonous. Soluble cyanide salts such as sodium cyanide (NaCN), potassium cyanide (KCN) and tetraethylammonium cyanide () are highly toxic. Covalent cyanides contain the group, and are usually called nitriles if the group is linked by a single covalent bond to carbon atom. For example, in acetonitrile , the cyanide group is bonded to methyl . In tetracyanomethane , four cyano groups are bonded to carbon. Although nitriles generally do not release cyanide ions, the cyanohydrins do and are thus toxic. The cyano group may be covalently bonded to atoms different than carbon, e.g., in cyanogen azide , phosphorus tricyanide and trimethylsilyl cyanide . Hydrogen cyanide, or , is a highly volatile toxic liquid tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dredging
Dredging is the excavation of material from a water environment. Possible reasons for dredging include improving existing water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing dams, dikes, and other controls for streams and shorelines; and recovering valuable mineral deposits or marine life having commercial value. In all but a few situations the excavation is undertaken by a specialist floating plant, known as a dredger. Usually the main objectives of dredging is to recover material of value, or to create a greater depth of water. Dredging systems can either be shore-based, brought to a location based on barges, or built into purpose-built vessels. Dredging can have environmental impacts: it can disturb marine sediments, creating dredge plumes which can lead to both short- and long-term water pollution, damage or destroy seabed ecosystems, and release legacy human-sourced toxins captured in the sediment. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chamber Of Commerce
A chamber of commerce, or board of trade, is a form of business network. For example, a local organization of businesses whose goal is to further the interests of businesses. Business owners in towns and cities form these local societies to advocate on behalf of the business community. Local businesses are members, and they elect a board of directors or executive council to set policy for the chamber. The board or council then hires a president, CEO, or executive director, plus staffing appropriate to size, to run the organization. A chamber of commerce may be a voluntary or a mandatory association of business firms belonging to different trades and industries. They serve as spokespeople and representatives of a business community. They differ from country to country. History The first chamber of commerce was founded in 1599 in Marseille, France, as the "Chambre de Commerce". The Royal Barcelona Board of Trade was established in 1758. The world's oldest English-speaking c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Golden Era
''The Golden Era'' was a 19th-century San Francisco newspaper. The publication featured the writing of Mark Twain, Bret Harte, Charles Warren Stoddard (writing at first as "Pip Pepperpod"), Fitz Hugh Ludlow, Adah Isaacs Menken, Ada Clare, Prentice Mulford, Dan De Quille, J. S. Hittell and some women such as Frances Fuller Victor. Stoddard recalled the newspaper as "the chief literary organ west of the Rocky Mountains".Tarnoff, Ben. ''The Bohemians: Mark Twain and the San Francisco Writers Who Reinvented American Literature''. New York: The Penguin Press, 2014: 40. History ''The Golden Era'' began in 1852 as a weekly founded by Rollin M. Daggett and J. Macdonough Foard. In 1860 it was sold to James Brooks and Joseph E. Lawrence. In the spring of 1860, they hired Bret Harte as editor and he focused on making it a more literary publication. He had previously published his first poem in the ''Golden Era'' in 1857 and, in October of that same year, his first prose piece on "A Trip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rose Hartwick Thorpe
Rose Hartwick Thorpe (July 18, 1850 – July 19, 1939) was an American poet and writer, remembered largely for the narrative poem, '' Curfew Must Not Ring Tonight'' (1867), which gained national popularity. It was translated into nearly every language of the world and was universally recognized as a veritable classic. Other poems followed, among them being "The Station Agent's Story", "Red Cross", and "In a Mining Town". Although a busy and prolific author, she was ill for some years. In 1888, she and her family moved to San Diego, California, living in Rosemere, Pacific Beach. Thorpe gave San Diego's "False Bay" the new moniker " Mission Bay" in a poem published in 1888 in ''The Golden Era''; the name persists today. Early years and education Rose Alnora Hartwick was born in Mishawaka, Indiana, July 18, 1850. She was the daughter of William Morris and Mary Louisa (Wight) Hartwick. Her father's family were artists. In 1861, her parents moved to Hillsdale County, where she grew u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weir
A weir or low-head dam is a barrier across the width of a river that alters the flow characteristics of water and usually results in a change in the height of the water level. Weirs are also used to control the flow of water for outlets of lakes, ponds, and reservoirs. There are many weir designs, but commonly water flows freely over the top of the weir crest before cascading down to a lower level. There is no single definition as to what constitutes a weir. ''Weir'' can also refer to the skimmer found in most in-ground swimming pools, which controls the flow of water pulled into the filtering system. Etymology The word likely originated from Middle English ''were'', Old English ''wer'', a derivative of the root of the verb ''werian,'' meaning "to defend, dam". The German cognate is ''Wehr'', which means the same as English weir. Function Commonly, weirs are used to prevent flooding, measure water discharge, and help render rivers more Navigability, navigable by boat. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levee
A levee ( or ), dike (American English), dyke (British English; see American and British English spelling differences#Miscellaneous spelling differences, spelling differences), embankment, floodbank, or stop bank is an elevated ridge, natural or artificial, alongside the river banks, banks of a river, often intended to flood control, protect against flooding of the area adjoining the river. It is usually soil, earthen and often runs parallel (geometry), parallel to the course of a river in its floodplain or along low-lying coastlines. Naturally occurring levees form on river floodplains following flooding. Sediment and alluvium are deposition (geology), deposited on the banks and settle, forming a ridge that increases the river channel's capacity. Alternatively, levees can be artificially constructed from fill dirt, fill, designed to regulate water levels. In some circumstances, artificial levees can be environmental degradation, environmentally damaging. Ancient civilization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
