|
Mount Rainier Volcano Lahar Warning System
The Mount Rainier Volcano Lahar Warning System consists of two separate components, operating in tandem: Acoustic Flow Monitors (AFM) and the All Hazard Alert Broadcast (AHAB) sirens. The AFM system was developed by the United States Geological Survey (USGS) in 1998 and is now maintained by Pierce County Emergency Management. The purpose of the warning system is to assist in the evacuation of residents in the river valleys around Mount Rainier, a volcano in Washington, in the event of a lahar. Pierce County works in partnership with the USGS, the Pacific Northwest Seismic Network (PNSN), Washington Military Department's Emergency Management Division, and South Sound 9-1-1 to monitor and operate the system. History Mount Rainier is an active volcano in Washington. It has previously buried sections of the surrounding river valleys in a volcanic mudflow, called a lahar. The Puyallup River Valley is at greatest risk. Tens of thousands of people live in areas that may have as little as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington Military Department
The Washington Military Department is a branch of the state government of Washington, United States. The Washington State Military Department has several major operational divisions: * Washington Emergency Management Division * Washington Army National Guard * Washington Air National Guard * Washington State Guard * Washington Youth Academy * State & Federal Support Services These divisions use state and federal resources to perform homeland defense, homeland security, and emergency mitigation, preparedness, response and recovery activities. Washington State Emergency Operations Center The Washington State Emergency Operations Center is located at Camp Murray, under the Military Department's Emergency Management Division. The 28,000 square foot facility, occupied since mid 1998, is built on rollers to withstand earthquakes. The Emergency Operations Center was activated for the 2012 Washington wildfires, 2015 Washington wildfires, 2016 Washington wildfires, 2018 Washin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanism Of Washington (state)
Volcanism, vulcanism or volcanicity is the phenomenon of eruption of molten rock (magma) onto the surface of the Earth or a solid-surface planet or moon, where lava, pyroclastics, and volcanic gases erupt through a break in the surface called a vent. It includes all phenomena resulting from and causing magma within the crust or mantle of the body, to rise through the crust and form volcanic rocks on the surface. Magmas, that reach the surface and solidify, form extrusive landforms. Volcanic processes Magma from the mantle or lower crust rises through the crust towards the surface. If magma reaches the surface, its behavior depends on the viscosity of the molten constituent rock. Viscous (thick) magma produces volcanoes characterised by explosive eruptions, while non-viscous (runny) magma produce volcanoes characterised by effusive eruptions pouring large amounts of lava onto the surface. In some cases, rising magma can cool and solidify without reaching the surface. Instead ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emergency Alert System
The Emergency Alert System (EAS) is a national warning system in the United States designed to allow authorized officials to broadcast emergency alerts and warning messages to the public via cable, satellite, or broadcast television, and both AM/ FM and satellite radio. The EAS became operational on January 1, 1997, after being approved by the Federal Communications Commission (FCC) in November 1994, replacing the Emergency Broadcast System (EBS). Its main improvement over the EBS, and perhaps its most distinctive feature, is its application of a digitally encoded audio signal known as Specific Area Message Encoding (SAME), which is responsible for the "screeching" or "chirping" sounds at the start and end of each message. This signal encodes locations an alert applies to, useful for specialized encoding and decoding equipment at broadcasting stations to automatically filter alert messages that do not apply to the area and to relay messages that do. Like the EBS, the system ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emergency Management In The United States
An emergency is an urgent, unexpected, and usually dangerous situation that poses an immediate risk to health, life, property, or environment and requires immediate action. Most emergencies require urgent intervention to prevent a worsening of the situation, although in some situations, mitigation may not be possible and agencies may only be able to offer palliative care for the aftermath. While some emergencies are self-evident (such as a natural disaster that threatens many lives), many smaller incidents require that an observer (or affected party) decide whether it qualifies as an emergency. The precise definition of an emergency, the agencies involved and the procedures used, vary by jurisdiction, and this is usually set by the government, whose agencies ( emergency services) are responsible for emergency planning and management. Defining an emergency An incident, to be an emergency, conforms to one or more of the following, if it: * Poses an immediate threat to life, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disaster Preparedness In The United States
A disaster is a serious problem occurring over a short or long period of time that causes widespread human, material, economic or environmental loss which exceeds the ability of the affected community or society to cope using its own resources. Disasters are routinely divided into either "natural disasters" caused by natural hazards or "human-instigated disasters" caused from anthropogenic hazards. However, in modern times, the divide between natural, human-made and human-accelerated disasters is difficult to draw. Examples of natural hazards include avalanches, flooding, cold waves and heat waves, droughts, earthquakes, cyclones, landslides, lightning, tsunamis, volcanic activity, wildfires, and winter precipitation. Examples of anthropogenic hazards include criminality, civil disorder, terrorism, war, industrial hazards, engineering hazards, power outages, fire, hazards caused by transportation, and environmental hazards. Developing countries suffer the greatest costs whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
It Could Happen Tomorrow
''It Could Happen Tomorrow'' is a television series that premiered on January 15, 2006 on The Weather Channel. It explored the possibilities of various weather and other natural phenomena severely damaging or destroying America's cities. This included: a Category 3 hurricane hitting New York City, an F4 tornado destroying Washington, D.C., dormant volcano Mount Rainier re-activating and destroying towns in the surrounding valleys, a tsunami flooding the Pacific Northwest coast, an intraplate earthquake impacting Memphis, Tennessee, wildfires spreading into the heart of San Diego, a huge earthquake leveling San Francisco, a flash flood in Boulder, Colorado, and a flood in Sacramento. More recent episodes included an earthquake in Las Vegas, an F5 tornado ripping its way through Chicago and Dallas, and more. So far, the only scenario that has come true is the Colorado floods, which started on September 9, 2013. Because Hurricane Sandy was only a category 1 and not a 3 when New Yor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mega Disasters
''Mega Disasters'' is an American documentary television series that originally aired from May 23, 2006 to July 2008 on The History Channel. Produced by Creative Differences, the program explores potential catastrophic threats to individual cities, countries, and the entire globe. The two "mega-disasters" of the 2004 Indian Ocean tsunami and Hurricane Katrina in 2005 inspired the series and provided a reference point for many of the episodes. Excepting only two shows devoted to , the threats explored can be divided into three general categories: meteorological, |
History (U
History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well as the memory, discovery, collection, organization, presentation, and interpretation of these events. Historians seek knowledge of the past using historical sources such as written documents, oral accounts, art and material artifacts, and ecological markers. History is not complete and still has debatable mysteries. History is also an academic discipline which uses narrative to describe, examine, question, and analyze past events, and investigate their patterns of cause and effect. Historians often debate which narrative best explains an event, as well as the significance of different causes and effects. Historians also debate the nature of history as an end in itself, as well as its usefulness to give perspective on the problems of the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westminster Quarters
The Westminster Quarters, from its use at the Palace of Westminster, is a melody used by a set of four quarter bells to mark each quarter-hour. It is also known as the Westminster Chimes, Cambridge Quarters or Cambridge Chimes from its place of origin, the Church of St Mary the Great, Cambridge. Description The Westminster Quarters are sounded by four quarter bells hung next to Big Ben in the Elizabeth Tower belfry in the Palace of Westminster. These are: The quarters consist of five changes, combinations of the four pitches provided by these quarter bells ( G4, F4, E4, B3) in the key E major. This generates five unique changes as follows: # G4, F4, E4, B3 # E4, G4, F4, B3 # E4, F4, G4, E4 # G4, E4, F4, B3 # B3, F4, G4, E4 Each of the five changes is played as three crotchets (quarter note) and a minim (half note) and are always played in the sequence 1, 2, 3, 4, 5. This sequence of five changes is used twice every hour as follows: :First quarter, change 1. :Half hou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierce County, Washington
Pierce County is a county in the U.S. state of Washington. As of the 2020 census, the population was 921,130, up from 795,225 in 2010, making it the second-most populous county in Washington, behind King County, and the 60th-most populous in the United States. The county seat and largest city is Tacoma. Formed out of Thurston County on December 22, 1852, by the legislature of Oregon Territory, it was named for U.S. President Franklin Pierce. Pierce County is in the Seattle metropolitan area (formally the Seattle-Tacoma-Bellevue, WA, metropolitan statistical area). Pierce County is home to Mount Rainier, the tallest mountain and a volcano in the Cascade Range. Its most recent recorded eruption was between 1820 and 1854. There is no imminent risk of eruption, but geologists expect that the volcano will erupt again. If this should happen, parts of Pierce County and the Puyallup Valley would be at risk from lahars, lava, or pyroclastic flows. The Mount Rainier Volcano Lahar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Federal Signal Modulator
Federal Signal Modulators (also known as Modulator Speaker Arrays) are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes, fires, lahars, tsunamis, or any other disaster. They are identified mostly by their distinctive stacked "flying saucer" design. The Modulator II is sold based on the more compact chassis of the siren compared to the original Modulators. General description The modulator is composed of speaker cells (ranging from two to eight, with the exception of seven) that contain four speaker drivers per cell, although two models (model 6032 and 6048) had additional drivers available when they were still produced. Modulators have an inactive (dummy) speaker cell on the bottom of the stack that is used to help project sound in all directions. Due to the design of active cells, there would be unbalanced sound distribution without the inactive cell. Modulators that are being made now ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> History (U")
