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experimental

Entry: Seismograph

URI: https://terra-vocabulary.org/ncl/DataTerraRepositoryFairIncubator/motsClefs/c_3bc99fc7

To avoid the strong ambient noise caused by ocean waves (microseisms), two types of seismograph have traditionally been used to record seismic signals: one for periods longer than about 10 s and the other for those shorter than 3 s. However, this kind of filtering may result in significant signal distortions and underestimation of earthquake magnitude. A broadband seismograph can record faithfully seismic signals in a frequency range of 3 decades or some 10 octaves (e.g., between 0.1 s to 100 s) or even wider, thanks to the improved linearity range of the seismometer and dynamic range of the recorder

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is a Concept | Sensor
changed on 17 Nov 2023 08:31:48.499
submitted byElsa David
accepted on 17 Aug 2022 09:11:52.996

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date accepted 17 Aug 2022 09:11:52.996
date submitted 17 Aug 2022 08:04:10.656
definition
entity Seismograph
source graph graph

description
en Instrument that detects and records ground motions (and especially vibrations due to earthquakes) along with timing information. It consists of a seismometer, a precise timing element, and a recording device or data logger.
en To avoid the strong ambient noise caused by ocean waves (microseisms), two types of seismograph have traditionally been used to record seismic signals: one for periods longer than about 10 s and the other for those shorter than 3 s. However, this kind of filtering may result in significant signal distortions and underestimation of earthquake magnitude. A broadband seismograph can record faithfully seismic signals in a frequency range of 3 decades or some 10 octaves (e.g., between 0.1 s to 100 s) or even wider, thanks to the improved linearity range of the seismometer and dynamic range of the recorder
item class Sensor | Concept
label
en Seismograph
fr Sismographe
modified 17 Nov 2023 08:31:48.499
notation c_3bc99fc7
register mots clefs
status status experimental
submitter
account name edavid@ipgp.fr
name Elsa David

type register item
version info 6
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Definition

description
en To avoid the strong ambient noise caused by ocean waves (microseisms), two types of seismograph have traditionally been used to record seismic signals: one for periods longer than about 10 s and the other for those shorter than 3 s. However, this kind of filtering may result in significant signal distortions and underestimation of earthquake magnitude. A broadband seismograph can record faithfully seismic signals in a frequency range of 3 decades or some 10 octaves (e.g., between 0.1 s to 100 s) or even wider, thanks to the improved linearity range of the seismometer and dynamic range of the recorder
en Instrument that detects and records ground motions (and especially vibrations due to earthquakes) along with timing information. It consists of a seismometer, a precise timing element, and a recording device or data logger.
exact match c a6f7de06
in scheme Vocabulaire des mots clefs
label
en Seismograph
fr Sismographe
pref label
en Seismograph
fr Sismographe
same as c a6f7de06
source epos / GFZ
status submitted
top concept of Vocabulaire des mots clefs
type Concept | Sensor
was attributed to Pôle FormaTerre