Usefulness of AFORS—autonomous fibre-optic rotational seismograph for investigation of rotational phenomena

Usefulness of AFORS—autonomous fibre-optic rotational seismograph for investigation of rotational phenomena

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时间:2019-07-11

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1、JSeismolDOI10.1007/s10950-011-9258-3ORIGINALARTICLEUsefulnessofAFORS—autonomousfibre-opticrotationalseismographforinvestigationofrotationalphenomenaLeszekR.Jaroszewicz&ZbigniewKrajewski&KrzysztofP.TeisseyreReceived:15July2011/Accepted:10November2011#Spri

2、ngerScience+BusinessMediaB.V.2011AbstractWeoutlinetheresearchleadingtodevel-protectlinearchangesofsensitivityinaboveopmentandapplicationoftheautonomousfibre-opticbandpass.ThefirstexperimentalresultsofAFORS-1rotationalseismograph(AFORS),whichutilisestheop

3、erationintheKsiąż(Poland)seismologicalobserva-Sagnaceffectforadirectmeasurementofrotation.toryarealsopresentedandcomparedwithdataobtainedThemainadvantageofAFORScomparingtootherfromothertypesofrotationaldevicessimultaneouslykindsofrotationalseismometersis

4、itcompletesusedinthisobservatory.insensitivitytolinearmotionsaswellasadirectmeasurementofrotationalcomponentsemittedduringKeywordsFibre-opticdevice.Seismograph.seismicevents.ThepresentedsystemcontainsaRotationalseismicmotions.Experimentalspecialautonomou

5、ssignalprocessingunitwhichinvestigationoptimisesitsoperationforthemeasurementofrotationmotions,whereasanewlyappliedtelemetricsystembasedontheInternetallowsforaremote1IntroductionAFORScontrol.Thelaboratoryinvestigationofthetwosuchdevicesindicatedtheykeepa

6、ccuracynolessTheexistenceofrotationalmotionsintheseismic−9−8than5.1·10to5.5·10rad/sinthefrequencyfieldisdiscussedfromthebeginningoftheearth-bandpassfrom0.83to106.15Hz.Moreover,theyquakeinvestigations.Theinterestinthisphenomenonhasbeenstimulatedbystrange,

7、rotaryandevenscrew-likedeformationsafterearthquakes,oftenL.R.Jaroszewicz(*):Z.KrajewskiappearingonthepartsofthetombsandmonumentsInstituteofAppliedPhysics,(Ferrari2006;Kozak2006).TheclassicaltextbooksMilitaryUniversityofTechnology,2GenSylwestraKaliskiegoS

8、tr.,onseismologydenyanypossibilityofrotational00-908Warsaw,Polandmotions,sotherotationaleffectsoftheearthquakese-mail:jarosz@wat.edu.plwereexplainedbyaninteractionofseismicwaveswithacompoundstructureoftheobjectstheyZ.Kraje

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