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Spänningsanalys är ett område som det bedr … Spänningsanalys är ett område som det bedrivs omfattande forskning inom för att finna ett sätt att förutse jordbävningar. Vid spänningsanalys mäts de spänningar i jordskorpan som finns vid jordbävningsdrabbade områden. FOI har utvecklat ett sätt att göra detta med hjälp av mikroskalvsdata, vilket innebär att de skalv som har en magnitud mellan -1 och 5 analyseras.ar en magnitud mellan -1 och 5 analyseras.
, Sacks-Evertson-Bohrloch-Dehnungsmesser (en … Sacks-Evertson-Bohrloch-Dehnungsmesser (englisch Sacks-Evertson borehole strain meter) sind kontinuierlich messende, hochauflösende geodätische Instrumente zur Messung von volumetrischen Verformungen (Extension, Kompression) der Erdkruste. Die Instrumente messen relative Volumenänderungen im Nanobereich (0,01 mm/km oder 10−8) in einer Frequenz von 60 Hz. Sie werden vorrangig in der Überwachung und Früherkennung von seismischer und magmatischer Aktivität im Untergrund eingesetzt und tragen wesentlich zum besseren Verständnis derer ursächlichen Prozesse und Steuerungsmechanismen bei.en Prozesse und Steuerungsmechanismen bei.
, 왜곡측정기 (歪計) 은 지각 변동 관측으로 암반의 변형을 정밀하게 측정하는 기계이다. 주로 지진이나 화산 분화의 예지의 관측에 사용된다. 성능이 좋은 기계는 10억분의 1의 변형도 측정 할 수 있다. 일본에서는 도카이 지진을 예지하기위, 도카이 지방, 미나미칸토 등에, 왜곡측정기가 많이 배치되어 있으며, 기상청등이 관측을 하고 있다.
, 体積ひずみ計（たいせきひずみけい）もしくは埋込式ひずみ計は、ひずみ計のうち、を計測するものである。岩盤の収縮や膨張などを精密に測定する器械であるため、主に地震や火山噴火などの観測に使用されている。特に東海地震などの予測をする上で重要な装置である。
, A strainmeter is an instrument used by geo … A strainmeter is an instrument used by geophysicists to measure thedeformation of the Earth.Linear strainmeters measure the changes in the distance between two points,using either a solid piece of material (over a short distance)or a laser interferometer (over a long distance, up to several hundred meters).The type using a solid length standard was invented by Benioff in 1932,using an iron pipe; later instruments used rods made of fused quartz.Modern instruments of this type can make measurements of length changes oververy small distances, and are commonly placed in boreholes to measuresmall changes in the diameter of the borehole.Another type of borehole instrument detects changes in a volume filled withfluid (such as silicone oil).The most common type is the dilatometer invented by Sacks and Evertson in the USA(patent 3,635,076);a design that uses specially shaped volumes to measure the strain tensorhas been developed by Sakata in Japan. All these types of strainmeters can measure deformation over frequenciesfrom a few Hz to periods of days, months, and years. This allows them to measuresignals at lower frequencies than can be detected with seismometers.Most strainmeter records show signals from the earth tides, and seismic wavesfrom earthquakes.At longer periods, they can also record the gradual accumulation of stress (physics)caused by plate tectonics, the release of this stress in earthquakes,and rapid changes of stress following earthquakes. The most extensive network of strainmeters is installed in Japan;it includes mostly quartz-bar instruments in tunnels and borehole strainmeters,with a few laser instruments.Starting in 2003 there has been a major effort (the Plate Boundary Observatory)to install many more strainmeters along the Pacific/North-America plate boundaryin the United States.The aim is to install about 100 borehole strainmeters,primarily in Washington, Oregon and California, and five laser strainmeters,all in California.five laser strainmeters,all in California.
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A strainmeter is an instrument used by geo … A strainmeter is an instrument used by geophysicists to measure thedeformation of the Earth.Linear strainmeters measure the changes in the distance between two points,using either a solid piece of material (over a short distance)or a laser interferometer (over a long distance, up to several hundred meters).The type using a solid length standard was invented by Benioff in 1932,using an iron pipe; later instruments used rods made of fused quartz.Modern instruments of this type can make measurements of length changes oververy small distances, and are commonly placed in boreholes to measuresmall changes in the diameter of the borehole.Another type of borehole instrument detects changes in a volume filled withfluid (such as silicone oil).The most common type is the dilatometer invented by Sacks type is the dilatometer invented by Sacks
, 왜곡측정기 (歪計) 은 지각 변동 관측으로 암반의 변형을 정밀하게 측정하는 기계이다. 주로 지진이나 화산 분화의 예지의 관측에 사용된다. 성능이 좋은 기계는 10억분의 1의 변형도 측정 할 수 있다. 일본에서는 도카이 지진을 예지하기위, 도카이 지방, 미나미칸토 등에, 왜곡측정기가 많이 배치되어 있으며, 기상청등이 관측을 하고 있다.
, Sacks-Evertson-Bohrloch-Dehnungsmesser (en … Sacks-Evertson-Bohrloch-Dehnungsmesser (englisch Sacks-Evertson borehole strain meter) sind kontinuierlich messende, hochauflösende geodätische Instrumente zur Messung von volumetrischen Verformungen (Extension, Kompression) der Erdkruste. Die Instrumente messen relative Volumenänderungen im Nanobereich (0,01 mm/km oder 10−8) in einer Frequenz von 60 Hz. Sie werden vorrangig in der Überwachung und Früherkennung von seismischer und magmatischer Aktivität im Untergrund eingesetzt und tragen wesentlich zum besseren Verständnis derer ursächlichen Prozesse und Steuerungsmechanismen bei.en Prozesse und Steuerungsmechanismen bei.
, Spänningsanalys är ett område som det bedr … Spänningsanalys är ett område som det bedrivs omfattande forskning inom för att finna ett sätt att förutse jordbävningar. Vid spänningsanalys mäts de spänningar i jordskorpan som finns vid jordbävningsdrabbade områden. FOI har utvecklat ett sätt att göra detta med hjälp av mikroskalvsdata, vilket innebär att de skalv som har en magnitud mellan -1 och 5 analyseras.ar en magnitud mellan -1 och 5 analyseras.
, 体積ひずみ計（たいせきひずみけい）もしくは埋込式ひずみ計は、ひずみ計のうち、を計測するものである。岩盤の収縮や膨張などを精密に測定する器械であるため、主に地震や火山噴火などの観測に使用されている。特に東海地震などの予測をする上で重要な装置である。
|
| rdfs:label |
Strainmeter
, 体積ひずみ計
, Sacks-Evertson-Bohrloch-Dehnungsmesser
, 왜곡측정기
, Spänningsanalys
|
