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Year Published: 2011

Some possible causes of and corrections for STS-1 response changes in the Global Seismographic Network

The Global Seismographic Network (GSN) (Figure 1) plays a key role in providing seismic data for global earthquake monitoring (e.g., Benz et al. 2005), earthquake science (e.g., Tsai et al. 2005), and studies of Earth structure (e.g., Dalton et al. 2008). One of the key GSN design goals is to "provide high fidelity digital recordings of all...

Hutt, C.R.; Ringler, A.T.
Some possible causes of and corrections for STS-1 response changes in the Global Seismographic Network; 2011; Article; Journal; Seismological Research Letters; Hutt, C. R.; Ringler, A. T.

Year Published: 2011

Albuquerque Seismological Laboratory--50 years of global seismology

The U.S. Geological Survey Albuquerque Seismological Laboratory is about 15 miles southeast of Albuquerque on the Pueblo of Isleta, adjacent to Kirtland Air Force Base. The Albuquerque Seismological Laboratory supports the Global Seismographic Network Program and the Advanced National Seismic System through the installation, operation, and...

Hutt, C.R.; Peterson, Jon; Gee, Lind; Derr, John; Ringler, Adam; Wilson, David
Albuquerque Seismological Laboratory--50 years of global seismology; 2011; FS; 2011-3065; Hutt, C. R.; Peterson, Jon ; Gee, Lind ; Derr, John ; Ringler, Adam ; Wilson, David

Year Published: 2011

The Global Seismographic Network

Gee, Lind S.; Leith, William S.
The Global Seismographic Network; 2011; FS; 2011-3021; Gee, Lind S.; Leith, William S.

Year Published: 2010

Temporal variations in Global Seismic Stations ambient noise power levels

Recent concerns about time-dependent response changes in broadband seismometers have motivated the need for methods to monitor sensor health at Global Seismographic Network (GSN) stations. We present two new methods for monitoring temporal changes in data quality and instrument response transfer functions that are independent of Earth seismic...

Ringler, A.T.; Gee, L.S.; Hutt, C.R.; McNamara, D.E.
Temporal variations in Global Seismic Stations ambient noise power levels; 2010; Article; Journal; Seismological Research Letters; Ringler, A.T.; Gee, L.S.; Hutt, C.R.; McNamara, D.E.

Year Published: 2008

The USGS Caribbean Seismic Network

Jamaica, Cuba, Turks and Caicos, Domincan Republic, Antigua-Barbuda, Grenada, Barbados, Panama, Honduras—what an itinerary! Palm trees, beaches, iguanas and seismic stations.

Gee, Lind; McNamara, Dan; Weaver, Jean; Benz, Harley; Ford, Doug; Gyure, Gay
The USGS Caribbean Seismic Network; 2008; Report; Report; Chapter in the IRIS 2008 Annual Report; Gee, Lind; Mcnamara, Dan; Weaver, Jean; Benz, Harley; Ford, Doug; Gyure, Gay

Year Published: 1998

Experimental investigations regarding the use of sand as an inhibitor of air convection in deep seismic boreholes

Tilt has been the nemesis of horizontal long period seismology since its inception. Modern horizontal long period seismometers with their long natural periods are incredibly sensitive to tilt. They can sense tilts smaller than 10-11 radians. To most readers, this is just a very very small number, so we will begin with an example, which should help...

Holcomb, L. Gary; Sandoval, Leo; Hutt, Bob
Experimental Investigations Regarding the Use of Sand as an Inhibitor of Air Convection in Deep Seismic Boreholes; 1998; OFR; 98-362; Holcomb, L. Gary; Sandoval, Leo; Hutt, Bob

Year Published: 1997

Taking the Earth's pulse

During the past 35 years, scientists have developed a vast network of seismometers that record earthquakes, volcanic eruptions, and nuclear explosions throughout the world. Seismographic data support disaster response, scientific research, and global security. With this network, the United States maintains world leadership in monitoring the...

Woodward, Robert L.; Benz, Harly M.; Brown, William M.
Taking the Earth's pulse; 1997; FS; 103-97; Woodward, Robert L.; Benz, Harly M.; Brown, William M., III

Year Published: 1993

Observations and modeling of seismic background noise

The preparation of this report had two purposes. One was to present a catalog of seismic background noise spectra obtained from a worldwide network of seismograph stations. The other purpose was to refine and document models of seismic background noise that have been in use for several years. The second objective was, in fact, the principal reason...

Peterson, Jon R.
Observations and Modeling of Seismic Background Noise; 1993; OFR; 93-322; Peterson, Jon R.

Year Published: 1992

An evaluation of installation methods for STS-1 seismometers

This report documents the results of a series of experiments conducted by the authors at the Albuquerque Seismological Laboratory (ASl) during the spring and summer of 1991; the object of these experiments was to obtain and document quantitative performance comparisons of three methods of installing STS-1 seismometers. Historically, ASL has...

Holcomb, L. Gary; Hutt, Charles R.
An Evaluation of Installation Methods for STS-1 Seismometers; 1992; OFR; 92-302; Holcomb, L. Gary; Hutt, Charles R.

Year Published: 1991

A C language implementation of the SRO (Murdock) detector/analyzer

A signal detector and analyzer algorithm was described by Murdock and Hutt in 1983. The algorithm emulates the performance of a human interpreter of seismograms. It estimates the signal onset, the direction of onset (positive or negative), the quality of these determinations, the period and amplitude of the signal, and the background noise at the...

Murdock, James N.; Halbert, Scott E.
A C Language Implementation of the SRO (Murdock) Detector/Analyzer; 1991; OFR; 87-158; Murdock, James N.; Halbert, Scott E.

Year Published: 1990

A numerical study of some potential sources of error in side-by-side seismometer evaluations

This report presents the results of a series of computer simulations of potential errors in test data, which might be obtained when conducting side-by-side comparisons of seismometers. These results can be used as guides in estimating potential sources and magnitudes of errors one might expect when analyzing real test data. First, the derivation...

Holcomb, L. Gary
A Numerical Study of Some Potential Sources of Error in Side-by-Side Seismometer Evaluations; 1990; OFR; 90-406; Holcomb, L. Gary

Year Published: 1989

A direct method for calculating instrument noise levels in side-by-side seismometer evaluations

The subject of determining the inherent system noise levels present in modem broadband closed loop seismic sensors has been an evolving topic ever since closed loop systems became available. Closed loop systems are unique in that the system noise can not be determined via a blocked mass test as in older conventional open loop seismic sensors....

Holcomb, L. Gary
A Direct Method for Calculating Instrument Noise Levels in Side-by-Side Seismometer Evaluations; 1989; OFR; 89-214; Holcomb, L. Gary