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Year Published: 2015

Upgrade of the New China Digital Seismograph Network

No abstract available.

Anderson, D.; Anderson, J.; Ford, D.; Gee, Lind S.; Gyure, G.; Hutt, Charles R.; Kromer, E.; Marshall, B.; Persefield, K.; Ringler, Adam T.; Sharratt, M.; Storm, Tyler; Wilson, David C.; Yang, D.; Zheng, Z.
Seismological Research Letters, Volume 86, Number 5 September/October 2015, doi: 10.1785/0220140182

Year Published: 2015

Self-noise models of five commercial strong-motion accelerometers

Strong‐motion accelerometers provide onscale seismic recordings during moderate‐to‐large ground motions (e.g., up to tens of m/s2 peak). Such instruments have played a fundamental role in improving our understanding of earthquake source physics (Bocketal., 2011), earthquake engineering (Youdet al., 2004), and regional seismology (Zollo et al.,...

Ringler, Adam T.; Evans, John R.; Hutt, Charles R.

Year Published: 2015

The data quality analyzer: a quality control program for seismic data

The U.S. Geological Survey's Albuquerque Seismological Laboratory (ASL) has several initiatives underway to enhance and track the quality of data produced from ASL seismic stations and to improve communication about data problems to the user community. The Data Quality Analyzer (DQA) is one such development and is designed to characterize seismic...

Ringler, Adam T.; Hagerty, M.T.; Holland, James F.; Gonzales, A.; Gee, Lind S.; Edwards, J.D.; Wilson, David C.; Baker, Adam
Ringler, A. T., M. T. Hagerty, J. Holland, A. Gonzales, L. S. Gee, J. D. Edwards, D. Wilson, A. M. Baker

Year Published: 2015

Uncertainty estimates in broadband seismometer sensitivities using microseisms

The midband sensitivity of a seismic instrument is one of the fundamental parameters used in published station metadata. Any errors in this value can compromise amplitude estimates in otherwise high-quality data. To estimate an upper bound in the uncertainty of the midband sensitivity for modern broadband instruments, we compare daily microseism (...

Ringler, Adam T.; Storm, Tyler L.; Gee, Lind S.; Hutt, Charles R.; Wilson, David C.

Year Published: 2014

World-Wide Standardized Seismograph Network: a data users guide

The purpose of this report, which is based on an unpublished draft prepared in the 1970s, is to provide seismologists with the information they may need to use the WWSSN data set as it becomes available in a more easily accessible and convenient format on the Internet. The report includes a description of the WWSSN network, station facilities,...

Peterson, Jon R.; Hutt, Charles R.
Peterson, Jon, and Hutt, C.R., 2014, World-Wide Standardized Seismograph Network—A data users guide: U.S. Geological Survey Open-File Report 2014–1218, 74 p., http://dx.doi.org/10.3133/ofr20141218.

Year Published: 2014

A brief test of the Hewlett-Packard MEMS seismic accelerometer

Testing was performed on a prototype of Hewlett-Packard (HP) Micro-Electro-Mechanical Systems (MEMS) seismic accelerometer at the U.S. Geological Survey’s Albuquerque Seismological Laboratory. This prototype was built using discrete electronic components. The self-noise level was measured during low seismic background conditions and found to be 9....

Homeijer, Brian D.; Milligan, Donald J.; Hutt, Charles R.
A brief test of the Hewlett-Packard MEMS seismic accelerometer; 2014; OFR; 2014-1047; Homeijer, Brian D.; Milligan, Donald J.; Hutt, Charles R.

Year Published: 2014

Seismometer Self-Noise and Measuring Methods

Seismometer self-noise is usually not considered when selecting and using seismic waveform data in scientific research as it is typically assumed that the self-noise is negligibly small compared to seismic signals. However, instrumental noise is part of the noise in any seismic record, and in particular, at frequencies below a few mHz, the...

Ringler, Adam T.; R. Sleeman; Hutt, Charles R.; Gee, Lind S.
Ringler, A. T., R. Sleeman, C. R. Hutt, L. S. Gee (2014). Seismometer Self-Noise and Measuring Methods, Encyclopedia of Earthquake Engineering, Springer-Verlag.

Year Published: 2013

Seismic Station Installation Orientation Errors at ANSS and IRIS/USGS Stations

Many seismological studies depend on the published orientations of sensitive axes of seismic instruments relative to north (e.g., Li et al., 2011). For example, studies of the anisotropic structure of the Earth’s mantle through SKS‐splitting measurements (Long et al., 2009), constraints on core–mantle electromagnetic coupling from torsional normal...

Ringler, Adam T.; Hutt, Charles R.; Persfield, K.; Gee, Lind S.
Seismic Station Installation Orientation Errors at ANSS and IRIS/USGS Stations; 2013; Article; Journal; Seismological Research Letters; Ringler, Adam T.; Hutt, Charles R.; Persfield, K.; Gee, Lind S.

Year Published: 2013

Obtaining changes in calibration-coil to seismometer output constants using sine waves

The midband sensitivity of a broadband seismometer is one of the most commonly used parameters from station metadata. Thus, it is critical for station operators to robustly estimate this quantity with a high degree of accuracy. We develop an in situ method for estimating changes in sensitivity using sine‐wave calibrations, assuming the calibration...

Ringler, Adam T.; Hutt, Charles R.; Gee, Lind S.; Sandoval, Leo D.; Wilson, David C.
Obtaining changes in calibration-coil to seismometer output constants using sine waves; 2013; Article; Journal; Bulletin of the Seismological Society of America; Ringler, Adam T.; Hutt, Charles R.; Gee, Lind S.; Sandoval, Leo D.; Wilson, David C.

Year Published: 2012

Data quality of seismic records from the Tohoku, Japan earthquake as recorded across the Albuquerque Seismological Laboratory networks

Great earthquakes recorded across modern digital seismographic networks, such as the recent Tohoku, Japan, earthquake on 11 March 2011 (Mw = 9.0), provide unique datasets that ultimately lead to a better understanding of the Earth's structure (e.g., Pesicek et al. 2008) and earthquake sources (e.g., Ammon et al. 2011). For network operators, such...

Ringler, A.T.; Gee, L.S.; Marshall, B.; Hutt, C.R.; Storm, T.
Data quality of seismic records from the Tohoku, Japan earthquake as recorded across the Albuquerque Seismological Laboratory networks; 2012; Article; Journal; Seismological Research Letters; Ringler, A. T.; Gee, L. S.; Marshall, B. ; Hutt, C. R.; Storm, T.

Year Published: 2012

Estimating pole/zero errors in GSN-IRIS/USGS network calibration metadata

Mapping the digital record of a seismograph into true ground motion requires the correction of the data by some description of the instrument's response. For the Global Seismographic Network (Butler et al., 2004), as well as many other networks, this instrument response is represented as a Laplace domain pole–zero model and published in the...

Ringler, A.T.; Hutt, C.R.; Aster, R.; Bolton, H.; Gee, L.S.; Storm, T.
Estimating pole/zero errors in GSN-IRIS/USGS network calibration metadata; 2012; Article; Journal; Bulletin of the Seismological Society of America; Ringler, A. T.; Hutt, C. R.; Aster, R. ; Bolton, H. ; Gee, L. S.; Storm, T.

Year Published: 2012

Relative azimuth inversion by way of damped maximum correlation estimates

Horizontal seismic data are utilized in a large number of Earth studies. Such work depends on the published orientations of the sensitive axes of seismic sensors relative to true North. These orientations can be estimated using a number of different techniques: SensOrLoc (Sensitivity, Orientation and Location), comparison to synthetics (Ekstrom...

Ringler, A.T.; Edwards, J.D.; Hutt, C.R.; Shelly, F.
Relative azimuth inversion by way of damped maximum correlation estimates; 2012; Article; Journal; Computers & Geosciences; Ringler, A.T.; Edwards, J.D.; Hutt, C.R.; Shelly, F.