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Fireline
A firebreak or double track (also called a fire line, fuel break, fireroad and firetrail in Australia) is a gap in vegetation or other combustible material that acts as a barrier to slow or stop the progress of a bushfire or wildfire. A firebreak may occur naturally where there is an absence of vegetation or "fuel", such as a river, lake or canyon. Firebreaks may also be man-made, and many of these also serve as roads, such as logging roads, four-wheel drive trails, secondary roads, or highways. Overview In the construction of a firebreak, the primary goal is to remove deadwood and undergrowth down to mineral soil. Various methods may be used to accomplish this initially and to maintain this condition. Ideally, the firebreak will be constructed and maintained according to the established practices of sustainable forestry and fire protection engineering, also known as best management practices (BMP). The general goals are to maximize the effectiveness of the firebreak at slowin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellowstone Fires Of 1988
The Yellowstone fires of 1988 collectively formed the largest wildfire in the recorded history of Yellowstone National Park in the United States. Starting as many smaller individual fires, the flames quickly spread out of control due to drought conditions and increasing winds, combining into several large conflagrations which burned for several months. The fires almost destroyed two major visitor destinations and, on September 8, 1988, the entire park was closed to all non-emergency personnel for the first time in its history. Only the arrival of cool and moist weather in the late autumn brought the fires to an end. A total of , or 36 percent of the park, burned at varying levels of severity. At the peak of the firefighting effort, more than 9,000 firefighters were assigned to the fires in the park, assisted by dozens of helicopters and fixed-wing aircraft which were used for water and fire retardant drops. With fires raging throughout the Greater Yellowstone Ecosystem and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Small Business
Small businesses are types of corporations, partnerships, or sole proprietorships which have a small number of employees and/or less annual revenue than a regular-sized business or corporation. Businesses are defined as "small" in terms of being able to apply for government support and qualify for preferential tax policy. The qualifications vary depending on the country and industry. Small businesses range from fifteen employees under the Australian ''Fair Work Australia, Fair Work Act 2009'', fifty employees according to the definition used by the European Union, and fewer than five hundred employees to qualify for many U.S. Small Business Administration programs. While small businesses can be classified according to other methods, such as annual revenues, shipments, sales, assets, annual gross, net revenue, net profits, the number of employees is one of the most widely used measures. Small businesses in many countries include service or retail operations such as convenience sto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interstate 15
Interstate 15 (I-15) is a major Interstate Highway in the Western United States, running through Southern California and the Intermountain West. I-15 begins near the Mexican border in San Diego County and stretches north to Alberta, Canada, passing through the states of California, Nevada, Arizona, Utah, Idaho, and Montana. The Interstate serves the cities of San Diego, San Bernardino, Las Vegas, Salt Lake City, Idaho Falls, and Great Falls. It also passes close to the urban areas of Los Angeles, Orange, and Riverside counties in California. The stretches of I-15 in Idaho, Utah, and Arizona have been designated as the "Veterans Memorial Highway". The southern end is at a junction with I-8 and State Route 15 (SR 15) in San Diego, and the northern end is at a connection with Alberta Highway 4 at the Sweetgrass–Coutts Border Crossing. I-15 was built to connect the Inland Empire with San Diego in California, facilitate tourism access to Las Vegas, prov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Ana Winds
The Santa Ana winds, occasionally referred to as the devil winds, are strong, extremely dry katabatic winds that originate inland and affect coastal Southern California and northern Baja California. They originate from cool, dry high-pressure air masses in the Great Basin. Santa Ana winds are known for the hot, dry weather that they bring in autumn (often the hottest of the year), but they can also arise at other times of the year. They often bring the lowest relative humidities of the year to coastal Southern California, and "beautifully clear skies". These low humidities, combined with the warm, compressionally-heated air mass, plus high wind speeds, create critical fire weather conditions, and fan destructive wildfires. Typically, about 10 to 25 Santa Ana wind events occur annually. A Santa Ana wind can blow from one to seven days, with an average wind event lasting three days. The longest recorded Santa Ana event was a 14-day wind in November 1957. Damage from high win ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cedar Fire
The Cedar Fire was a massive, highly-destructive wildfire, which burned of land in San Diego County, California, during October and November 2003. The fire's rapid growth was driven by the Santa Ana winds, causing the fire to spread at a rate of per hour. By the time the fire was fully contained on November 4, it had destroyed 2,820 buildings (including 2,232 homes) and killed 15 people, including one firefighter. Hotspots continued to burn within the Cedar Fire's perimeter until December 5, 2003, when the fire was fully brought under control. The fire remains one of the largest wildfires in California history and, as of January 2022, the ninth-largest wildfire in the state's modern history. According to CALFIRE, it is also the sixth-deadliest and fourth-most destructive wildfire in state history, causing just over $1.3 billion in damages. In November 2018, the Camp Fire (2018) surpassed the Tubbs Fire (which had previously surpassed the 1991 Oakland Firestorm and the Ced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contrasts - Fire
Contrasts may refer to: * Contrasts (Aziza Mustafa Zadeh album), ''Contrasts'' (Aziza Mustafa Zadeh album), 2006 * Contrasts (Bucky Pizzarelli & John Pizzarelli album), ''Contrasts'' (Bucky Pizzarelli & John Pizzarelli album), 1999 * Contrasts (Sam Rivers album), ''Contrasts'' (Sam Rivers album), 1979 * Contrasts (Larry Young album), ''Contrasts'' (Larry Young album), 1967 * Contrasts (Erroll Garner album), ''Contrasts'' (Erroll Garner album), 1955 * Contrasts (Bartók), ''Contrasts'' (Bartók), a chamber music composition See also * Contrast (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Revelstoke, British Columbia
Revelstoke () is a city in southeastern British Columbia, Canada, with a census population of 8,275 in 2021. Revelstoke is located east of Vancouver, and west of Calgary, Alberta. The city is situated on the banks of the Columbia River just south of the Revelstoke Dam and near its confluence with the Illecillewaet River. East of Revelstoke are the Selkirk Mountains and Glacier National Park, penetrated by Rogers Pass used by the Trans-Canada Highway and the Canadian Pacific Railway. South of the community down the Columbia River are the Arrow Lakes, Mount Begbie, and the Kootenays. West of the city is Eagle Pass through the Monashee Mountains and the route to Shuswap Lake. History Revelstoke was founded in the 1880s when the Canadian Pacific Railway (CPR) was built through the area; mining was an important early industry. The name was originally Farwell, after a local land owner and surveyor. In yet earlier days, the spot was called the "Second Crossing" to different ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strategy
Strategy (from Greek στρατηγία ''stratēgia'', "troop leadership; office of general, command, generalship") is a general plan to achieve one or more long-term or overall goals under conditions of uncertainty. In the sense of the " art of the general", which included several subsets of skills including military tactics, siegecraft, logistics etc., the term came into use in the 6th century C.E. in Eastern Roman terminology, and was translated into Western vernacular languages only in the 18th century. From then until the 20th century, the word "strategy" came to denote "a comprehensive way to try to pursue political ends, including the threat or actual use of force, in a dialectic of wills" in a military conflict, in which both adversaries interact. Strategy is important because the resources available to achieve goals are usually limited. Strategy generally involves setting goals and priorities, determining actions to achieve the goals, and mobilizing resources t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
City Planning
Urban planning (also called city planning in some contexts) is the process of developing and designing land use and the built environment, including air, water, and the infrastructure passing into and out of urban areas, such as transportation, communications, and distribution networks, and their accessibility. Traditionally, urban planning followed a top-down approach in master planning the physical layout of human settlements. The primary concern was the public welfare, which included considerations of efficiency, sanitation, protection and use of the environment, as well as taking account of effects of the master plans on the social and economic activities. Over time, urban planning has adopted a focus on the social and environmental " bottom lines" that focuses on using planning as a tool to improve the health and well-being of people and maintain sustainability standards. In the early 21st century, urban planning experts such as Jane Jacobs called on urban planners to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Community
A community is a social unit (a group of people) with a shared socially-significant characteristic, such as place, set of norms, culture, religion, values, customs, or identity. Communities may share a sense of place situated in a given geographical area (e.g. a country, village, town, or neighborhood) or in virtual space through communication platforms. Durable good relations that extend beyond immediate genealogical ties also define a sense of community, important to people's identity, practice, and roles in social institutions such as family, home, work, government, TV network, society, or humanity at large. Although communities are usually small relative to personal social ties, "community" may also refer to large-group affiliations such as national communities, international communities, and virtual communities. In terms of sociological categories, a community can seem like a sub-set of a social collectivity. In developmental views, a community can emerge out of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest Floor
The forest floor, also called detritus or wikt:duff#Noun 2, duff, is the part of a forest ecosystem that mediates between the living, aboveground portion of the forest and the mineral soil, principally composed of dead and decaying plant matter such as rotting wood and shed leaf, leaves. In some countries, like Canada, forest floor refers to L, F and H organic horizons. It hosts a wide variety of decomposers and predators, including invertebrates, fungi, algae, bacteria, and archaea. The forest floor serves as a bridge between the above ground living vegetation and the soil, and thus is a crucial component in nutrient transfer through the biogeochemical cycle. Leaf litter and other plant litter transmits nutrients from plants to the soil. The plant litter of the forest floor (or L horizon) prevents erosion, conserves moisture, and provides nutrients to the entire ecosystem. The F horizon consists of plant material in which decomposition is apparent, but the origins of plant res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paper Industry
The pulp and paper industry comprises companies that use wood, specifically pulpwood, as raw material and produce pulp, paper, paperboard, and other cellulose-based products. Manufacturing process In the manufacturing process, pulp is introduced into a paper machine where it is shaped into a paper web and water is extracted through pressing and drying stages. Pressing involves removing water from the sheet by applying force. This process employs a specialized type of felt, distinct from traditional felt, to absorb the water. In contrast, hand-made paper uses a blotter sheet for this purpose. Drying involves eliminating water from the paper sheets through air or heat. Historically, this was achieved by hanging the sheets to dry, similar to laundry. In modern papermaking, various heated drying mechanisms are employed, with the steam-heated can dryer being the most prevalent on paper machines. History Papermaking as a craft is ancient, and for centuries it used various fibers, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
