Results 261 to 270 of about 22,636 (288)

Instrument noise in seismometers

Bulletin of the Seismological Society of America, 1961
Abstract Methods are developed to analyze the effects of thermal noise and seismic noise in masking small earth vibrations. The procedure is applied to a simple seismometer, seismometers with electronic and galvanometer amplifiers, and a seismometer with a shunt capacity.
openaire   +2 more sources

Subtracting Tilt from a Horizontal Seismometer Using a Ground‐Rotation Sensor

, 2017
We demonstrate the use of a high‐precision ground‐rotation sensor to subtract wind‐induced tilt noise in a horizontal broadband seismometer at frequencies above 10 mHz. The measurement was carried out at the LIGO Hanford Observatory using a low‐frequency
K. Venkateswara, C. Hagedorn, J. Gundlach, J. Kissel, J. Warner, H. Radkins, T. Shaffer, B. Lantz, R. Mittleman, F. Matichard, R. Schofield   +10 more
semanticscholar   +1 more source

The determination of seismometer damping [PDF]

Bulletin of the Seismological Society of America, 1966
a4bstract Eaton's method of determining the seismometer damping is extended, in order to make it more easily applicable to any value of period and damping. The theory of the seismometer response to the release test is developed, showing that, for the application of this method, both release and tapping tests are equivalent.
openaire   +1 more source

Density Anomalies in Subsurface Layers of Mars: Model Estimates for the Site of the InSight Mission Seismometer

Solar system research, 2020
T. Gudkova, I. E. Stepanova, A. Batov
semanticscholar   +1 more source

A Torsion Seismometer

Journal of the Optical Society of America, 1924
J. A. Anderson, H. O. Wood
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AN ASTRONOMICAL SEISMOMETER

Astronomy & Astrophysics, 1993
We present the design of a new type of instrument to measure small doppler shifts in spectral lines. Our instrument is a form of Heterodyned, Holographic Spectrometer, here optimized for high photon efficiency. It should be suitable for the measurement of solar or stellar oscillations, which is our primary goal, or in the search for stellar-planetary ...
FRANDSEN, S, DOUGLAS, NG, BUTCHER, HR
openaire   +1 more source

A seismometer in orbit

Physics Today, 2013
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Passive Seismometers

2014
Gerardo Alguacil, Jens Havskov
openaire   +1 more source

The Galitzin seismometer

Bulletin of the Seismological Society of America, 1936
Frank Wenner, H. E. McComb
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A Portable Seismometer

Journal of the Optical Society of America, 1922
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