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Extending a Lippmann Style Seismometer's Dynamic Range by Using a Non-linear Feedback Circuit : Volume 36, Issue 36 (11/10/2013)

By Romeo, G.

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Book Id: WPLBN0003985117
Format Type: PDF Article :
File Size: Pages 4
Reproduction Date: 2015

Title: Extending a Lippmann Style Seismometer's Dynamic Range by Using a Non-linear Feedback Circuit : Volume 36, Issue 36 (11/10/2013)  
Author: Romeo, G.
Volume: Vol. 36, Issue 36
Language: English
Subject: Science, Advances, Geosciences
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Spinelli, G., & Romeo, G. (2013). Extending a Lippmann Style Seismometer's Dynamic Range by Using a Non-linear Feedback Circuit : Volume 36, Issue 36 (11/10/2013). Retrieved from http://www.ebooklibrary.org/


Description
Description: Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy. A Lippmann style seismometer (Lippmann and Gebrande, 1983) uses a single-coil velocity-feedback method in order to extend toward lower frequencies a geophone's frequency response. Strong seismic signals may saturate the electronics, sometimes clipping the signal or producing the characteristic whale-shaped recording.

Adding a non linear feedback in the electronic circuit may avoid saturation, allowing the strong-motion use of the seismometer without affecting the usual performance. Such a seismometer will allow unsaturated data in epicentral area while offering nice low signal recording for far events.


Summary
Extending a Lippmann style seismometer's dynamic range by using a non-linear feedback circuit

Excerpt
Geothech Instruments LLC. PORTABLE SHORT-PERIOD SEISMOMETER MODEL S-13 – Operation and maintenance manual, http://www.geoinstr.com/pub/manuals/s-13.pdf, 2000.; Horowitz, P. and Hill, W.: The art of electronics, Cambridge University Press, 2006.; Lippmann, E. and Gebrande, H.: Eine einfache Methide zur Erweiterung des Meßereichs Elektrodynamischer Seismometer, Annual meeting of the German Geophysical Society, Aachen, 1983.; Romeo, G.: Whale watching: effects of strong signals on Lippmann style seismometers, J. Seismol., 16, 25–34, 2012.; Romeo, G. and Braun, T.: Appunti di sismometria, Quaderni di Geofisica, 46, (http://portale.ingv.it/portale_ingv/produzione-scientifica/quaderni-di-geofisica/archivio/quaderni-di-geofisica-2007), 2007.

 

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