Comment on 'Dynamic Tilt Correction Using Direct Rotational Motion Measurements' by Felix Bernauer, Joachim Wassermann, and Heiner Igel

Autor:	Vladimir Graizer
Rok vydání:	2021
Předmět:	Physics Geophysics Classical mechanics Tilt (optics) 010504 meteorology & atmospheric sciences Rotation around a fixed axis 010502 geochemistry & geophysics 01 natural sciences 0105 earth and related environmental sciences
Zdroj:	Seismological Research Letters. 92:2081-2086
ISSN:	1938-2057 0895-0695
Popis:	This article identifies deficiencies in the article of Bernauer et al. (2020) in performing and describing shake table and numerical (synthetic) testing of newly designed seismic instruments for recording complex translational and rotational motion. In my opinion, this is a result from a deficiency in referencing previously published peer-reviewed papers in this area. I also disagree with Bernauer et al. (2020) interpretation of the origin of errors in a vertical sensor’s recording because the sensitivity of a vertical pendulum type sensor to small tilts is much lower than that of the horizontal. Complete differential equations of pendulum-type horizontal and vertical seismometers are presented and examples of previously performed numerical and shake table tests of seismic instruments are shown.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d72bd2eeba39de867dccda2776d06bda https://doi.org/10.1785/0220200250 Zobrazit plný text záznamu