dead geophone - определение. Что такое dead geophone
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Что (кто) такое dead geophone - определение

DEVICE THAT CONVERTS GROUND MOVEMENT (VELOCITY) INTO VOLTAGE, WHICH MAY BE RECORDED AT A RECORDING STATION. THE DEVIATION OF THIS MEASURED VOLTAGE FROM THE BASE LINE IS CALLED THE SEISMIC RESPONSE AND IS ANALYZED FOR STRUCTURE OF THE EARTH.
Geophone (instrument)
  • Geosource Inc. MD-79—8 Hz, 335 Ω geophone
  • Geophone (SM-24), frequency band 10 Hz to 240 Hz, standard resistance 375 Ω
  • Man using a geophone
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  • access-date=21 July 2017}}</ref>
  • Source Receivers single fold-3 Fold
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Geophone         
A geophone is a device that converts ground movement (velocity) into voltage, which may be recorded at a recording station. The deviation of this measured voltage from the base line is called the seismic response and is analyzed for structure of the earth.
Geophone (musical instrument)         
  • Oberlin]], Ohio
MUSICAL INSTRUMENT
Geophone (percussion instrument)
The geophone is a percussion instrument, invented by the French composer Olivier Messiaen for use in his large composition for piano and orchestra entitled Des canyons aux étoiles… ("From the canyons to the stars…"). It consists of a drum filled with thousands of small lead pellets, and is played by swirling it around slowly so that the noise of the pellets resembles the sound of dry shifting earth.
dead centre         
WIKIMEDIA DISAMBIGUATION PAGE
Dead Center (album); Dead centre; Dead center (disambiguation); Dead Center
¦ noun the position of a crank when it is in line with the connecting rod and not exerting torque.
dead ringer         
WIKIMEDIA DISAMBIGUATION PAGE
Dead ringer; Dead Ringers; Deadringer; Dead ringers; Dead Ringer (disambiguation)
¦ noun informal a person or thing that looks very like another: he's a dead ringer for his late papa.
dead water         
  • doi-access=free }}</ref>
NAUTICAL TERM FOR A PHENOMENON WHICH CAN OCCUR WHEN A LAYER OF FRESH OR BRACKISH WATER RESTS ON TOP OF DENSER SALT WATER, WITHOUT THE TWO LAYERS MIXING
Dead Water; Dead water effect
¦ noun still water without any current.
Dead water         
  • doi-access=free }}</ref>
NAUTICAL TERM FOR A PHENOMENON WHICH CAN OCCUR WHEN A LAYER OF FRESH OR BRACKISH WATER RESTS ON TOP OF DENSER SALT WATER, WITHOUT THE TWO LAYERS MIXING
Dead Water; Dead water effect
Dead water is the nautical term for a phenomenon which can occur when there is strong vertical density stratification due to salinity or temperature or both. It is common where a layer of fresh or brackish water rests on top of denser salt water, without the two layers mixing.
dead letter box         
  • This (replacement) mailbox is identical to the one, and in the same location that convicted spy [[Aldrich Ames]] used to signal his Russian counterparts. Ames would place a horizontal chalk mark about 3" long above the USPS logo.
  • Dead drop spike
METHOD OF ESPIONAGE TRADECRAFT
Dead letter boxes; Dead letter box; Dead drops; Dead letterbox; Dead Drop; Dead-letter box; Dead drop spikes; Dead letter drop; Dead drop spike
¦ noun a place where messages can be left and collected without the sender and recipient meeting.
Dead zone (ecology)         
  • Red circles show the location and size of many dead zones.<br />Black dots show dead zones of unknown size.<br />''The size and number of marine dead zones—areas where the deep water is so low in dissolved oxygen that sea creatures can't survive—have grown explosively in the past half-century.'' – <small>[[NASA Earth Observatory]] (2008)<ref>[http://earthobservatory.nasa.gov/IOTD/view.php?id=44677 Aquatic Dead Zones] ''[[NASA Earth Observatory]]''. Revised 17 July 2010. Retrieved 17 January 2010.</ref></small>}}
  • Dissolved oxygen levels required by various species in Chesapeake Bay
  • Dead zone in the [[Gulf of Mexico]]
  • Baltic]] covered with dead or dying crabs, fish and clams killed by oxygen depletion
  • decay]] of [[algae]] during [[algal bloom]]s, like this one off the coast of [[La Jolla, San Diego, California]].
  • Dead zones are bodies of water that do not have sufficient oxygen (3) levels in order to support most marine life. Dead zones are caused by oxygen-depleting factors which include, but are not limited to, human pollution (4). This is a process called eutrophication, where oxygen levels decrease as elements such nitrogen and phosphorus increase. A healthy river will have increased amounts of oxygen for consumption by organisms (1). As nitrogen increases, algae (5) produce large amounts of oxygen, but die from increased nitrogen. Decomposers then use all of the remaining oxygen decomposing the algae, resulting in no oxygen left and no oxygen being produced. (2).
  • date=2012-06-23
}}</ref> At the same time, as sunlight increases during the spring, algal growth in the dead zones increases dramatically. In fall months, tropical storms begin to enter the [[Gulf of Mexico]] and break up the dead zones, and the cycle repeats again in the spring.
LOW-OXYGEN AREAS IN OCEANS AND LARGE LAKES CAUSED BY NUTRIENT AND FERTILIZER POLLUTION
Marine dead zone; Hypoxic zone; Anoxic zones; Gulf of Mexico dead zone; Ecological dead zone; Biologically dead; Dead zone (ecology; Ocean dead zone; Economic impact of the Gulf of Mexico dead zone
Dead zones are hypoxic (low-oxygen) areas in the world's oceans and large lakes. Hypoxia occurs when dissolved oxygen (DO) concentration falls to or below 2 mg of O2/liter.
Dead drop         
  • This (replacement) mailbox is identical to the one, and in the same location that convicted spy [[Aldrich Ames]] used to signal his Russian counterparts. Ames would place a horizontal chalk mark about 3" long above the USPS logo.
  • Dead drop spike
METHOD OF ESPIONAGE TRADECRAFT
Dead letter boxes; Dead letter box; Dead drops; Dead letterbox; Dead Drop; Dead-letter box; Dead drop spikes; Dead letter drop; Dead drop spike
A dead drop or dead letter box is a method of espionage tradecraft used to pass items or information between two individuals (e.g.
Dead rubber         
SPORTS MATCH WHICH MATHEMATICALLY CANNOT CHANGE THE OVERALL RESULT OF A SERIES
Dead-rubber
Dead rubber is a term used in sporting parlance to describe a match in a series where the series result has already been decided by earlier matches. The dead rubber match therefore has no effect on the winner and loser of the series, other than the total number of matches won and lost.

Википедия

Geophone

A geophone is a device that converts ground movement (velocity) into voltage, which may be recorded at a recording station. The deviation of this measured voltage from the base line is called the seismic response and is analyzed for structure of the earth.