David Wilson
David Wilson is the director of the Global Seismographic Network.
Science and Products
Filter Total Items: 45
A collection of historic seismic instrumentation photographs at the Albuquerque Seismological Laboratory
The Albuquerque Seismological Laboratory (ASL) has preserved a collection of photographs of seismographic equipment, stations, and drawings used by the United States Coast and Geodetic Survey (USC&GS) in the early-to-mid-twentieth century. The photographs were transferred to ASL from the US Department of Commerce building in Washington DC after ASL became established as a USC&GS facility for seism
Authors
Sabrina Veronica Moore, Charles R. Hutt, Robert E. Anthony, Adam T. Ringler, Alexis Casondra Bianca Alejandro, David C. Wilson
The Albuquerque Seismological Lab WWSSN film chip preservation project
From 1961 to 1996, the Albuquerque Seismological Laboratory (ASL) installed and operated the World‐Wide Standardized Seismograph Network (WWSSN). Each station within the network consisted of three Benioff short‐period sensors and three Sprengnether Press‐Ewing long‐period sensors along with recording, timing, and calibration equipment. Approximately 3.7 million single‐day record film chips were cr
Authors
Alexis Casondra Bianca Alejandro, Charles R. Hutt, Adam T. Ringler, Sabrina Veronica Moore, Robert E. Anthony, David C. Wilson
Do low-cost seismographs perform well enough for your network? An overview of laboratory tests and field observations of the OSOP Raspberry Shake 4D
Seismologists have recently begun utilizing low-cost nodal sensors in dense deployments to sample the seismic wavefield at unprecedented spatial resolution. Earthquake Early Warning Systems (EEWS) and other monitoring networks (e.g. wastewater injection) would additionally benefit from network densification; however, current nodal systems lack power systems and/or real-time data transmission requi
Authors
Robert E. Anthony, Adam T. Ringler, David C. Wilson, Emily Wolin
Observations of rotational motions from local earthquakes using two temporary portable sensors in Waynoka, Oklahoma
Characterizing rotational motions from earthquakes at local distances has the potential to improve earthquake engineering and seismic gradiometry by better characterizing the complete seismic wavefield. Applied Technology Associates (ATA) has developed a proto‐seismic magnetohydrodynamic (SMHD) three‐component rotational rate sensor. We deploy two ATA rotational rate sensors at a temporary aftersh
Authors
Adam T. Ringler, Robert E. Anthony, David C. Wilson, A.A. Holland, C.-J. Lin
Sensor suite: The Albuquerque Seismological Laboratory Instrumentation Testing Suite
To standardize parameters used in seismometer testing and calibration and to make these algorithms accessible to the seismological community, we have developed a new seismometer testing software package called Albuquerque Seismological Laboratory (ASL) Sensor Test Suite. This software is written in Java and makes use of Seismological Exchange for Earthquake Data (SEED) format. Our goal is not to b
Authors
A. Kearns, Adam T. Ringler, James Holland, Tyler Storm, David C. Wilson, Robert E. Anthony
Seismic sensors record a hurricane’s roar
The instruments installed at Global Seismographic Network (GSN) stations were designed to record Earth’s vibrations, but they sometimes pick up sound waves from unexpected sources. For example, newly installed infrasound sensors at a station on Puerto Rico recorded the passage of Hurricane Maria on 20 September 2017.
Authors
David C. Wilson, Peter Davis, Carl Ebeling, Charles R. Hutt, Katrin Hafner
Laboratory tests of three Z‐Land Fairfield Nodal 5‐Hz, three‐component sensors
We conduct a number of laboratory tests at the Albuquerque Seismological Laboratory to verify the self‐noise and fidelity in which 3 three‐component Fairfield Nodal Z‐Land, Generation 2, 5‐Hz sensors are able to record seismic signals. In addition to the incoherent self‐noise of the sensors, we estimate the sensitivity of the units in digital volts/m/s, the damping, and the free period. These thre
Authors
Adam T. Ringler, Robert E. Anthony, M.S Karplus, Austin Holland, David C. Wilson
The widespread influence of Great Lakes microseisms across the United States revealed by the 2014 polar vortex
During the winter of 2014, a weak polar vortex brought record cold temperatures to the north‐central (“Midwest”) United States, and the Great Lakes reached the highest extent of ice coverage (92.5%) since 1979. This event shut down the generation of seismic signals caused by wind‐driven wave action within the lakes (termed “lake microseisms”), giving an unprecedented opportunity to isolate and cha
Authors
Robert E. Anthony, Adam T. Ringler, David C. Wilson
Effects of thermal variability on broadband seismometers: Controlled experiments, observations, and implications
Isolating seismic instruments from temperature fluctuations is routine practice within the seismological community. However, the necessary degree of thermal stability required in broadband installations to avoid generating noise or compromising the fidelity in the seismic records is largely unknown and likely application dependent. To quantify the temperature sensitivity of seismometers over a bro
Authors
Claire Doody, Adam T. Ringler, Robert E. Anthony, David C. Wilson, Austin Holland, Charles R. Hutt, Leo Sandoval
Detection and characterization of pulses in broadband seismometers
Pulsing - caused either by mechanical or electrical glitches, or by microtilt local to a seismometer - can significantly compromise the long‐period noise performance of broadband seismometers. High‐fidelity long‐period recordings are needed for accurate calculation of quantities such as moment tensors, fault‐slip models, and normal‐mode measurements. Such pulses have long been recognized in accele
Authors
David C. Wilson, Adam T. Ringler, Charles R. Hutt
Repeatability of testing a small broadband sensor in the Albuquerque Seismological Laboratory Underground Vault
Variability in seismic instrumentation performance plays a fundamental role in our ability to carry out experiments in observational seismology. Many such experiments rely on the assumed performance of various seismic sensors as well as on methods to isolate the sensors from nonseismic noise sources. We look at the repeatability of estimating the self‐noise, midband sensitivity, and the relative o
Authors
Adam T. Ringler, Austin Holland, David C. Wilson
Characterizing local variability in long‐period horizontal tilt noise
Horizontal seismic data are dominated by atmospherically induced tilt noise at long periods (i.e., 30 s and greater). Tilt noise limits our ability to use horizontal data for sensitive seismological studies such as observing free earth modes. To better understand the local spatial variability of long‐period horizontal noise, we observe horizontal noise during quiet time periods in the Albuquerque
Authors
M.D. Rohde, Adam T. Ringler, Charles R. Hutt, David C. Wilson, Austin Holland, L.D Sandoval, Tyler Storm
Science and Products
Filter Total Items: 45
A collection of historic seismic instrumentation photographs at the Albuquerque Seismological Laboratory
The Albuquerque Seismological Laboratory (ASL) has preserved a collection of photographs of seismographic equipment, stations, and drawings used by the United States Coast and Geodetic Survey (USC&GS) in the early-to-mid-twentieth century. The photographs were transferred to ASL from the US Department of Commerce building in Washington DC after ASL became established as a USC&GS facility for seism
Authors
Sabrina Veronica Moore, Charles R. Hutt, Robert E. Anthony, Adam T. Ringler, Alexis Casondra Bianca Alejandro, David C. Wilson
The Albuquerque Seismological Lab WWSSN film chip preservation project
From 1961 to 1996, the Albuquerque Seismological Laboratory (ASL) installed and operated the World‐Wide Standardized Seismograph Network (WWSSN). Each station within the network consisted of three Benioff short‐period sensors and three Sprengnether Press‐Ewing long‐period sensors along with recording, timing, and calibration equipment. Approximately 3.7 million single‐day record film chips were cr
Authors
Alexis Casondra Bianca Alejandro, Charles R. Hutt, Adam T. Ringler, Sabrina Veronica Moore, Robert E. Anthony, David C. Wilson
Do low-cost seismographs perform well enough for your network? An overview of laboratory tests and field observations of the OSOP Raspberry Shake 4D
Seismologists have recently begun utilizing low-cost nodal sensors in dense deployments to sample the seismic wavefield at unprecedented spatial resolution. Earthquake Early Warning Systems (EEWS) and other monitoring networks (e.g. wastewater injection) would additionally benefit from network densification; however, current nodal systems lack power systems and/or real-time data transmission requi
Authors
Robert E. Anthony, Adam T. Ringler, David C. Wilson, Emily Wolin
Observations of rotational motions from local earthquakes using two temporary portable sensors in Waynoka, Oklahoma
Characterizing rotational motions from earthquakes at local distances has the potential to improve earthquake engineering and seismic gradiometry by better characterizing the complete seismic wavefield. Applied Technology Associates (ATA) has developed a proto‐seismic magnetohydrodynamic (SMHD) three‐component rotational rate sensor. We deploy two ATA rotational rate sensors at a temporary aftersh
Authors
Adam T. Ringler, Robert E. Anthony, David C. Wilson, A.A. Holland, C.-J. Lin
Sensor suite: The Albuquerque Seismological Laboratory Instrumentation Testing Suite
To standardize parameters used in seismometer testing and calibration and to make these algorithms accessible to the seismological community, we have developed a new seismometer testing software package called Albuquerque Seismological Laboratory (ASL) Sensor Test Suite. This software is written in Java and makes use of Seismological Exchange for Earthquake Data (SEED) format. Our goal is not to b
Authors
A. Kearns, Adam T. Ringler, James Holland, Tyler Storm, David C. Wilson, Robert E. Anthony
Seismic sensors record a hurricane’s roar
The instruments installed at Global Seismographic Network (GSN) stations were designed to record Earth’s vibrations, but they sometimes pick up sound waves from unexpected sources. For example, newly installed infrasound sensors at a station on Puerto Rico recorded the passage of Hurricane Maria on 20 September 2017.
Authors
David C. Wilson, Peter Davis, Carl Ebeling, Charles R. Hutt, Katrin Hafner
Laboratory tests of three Z‐Land Fairfield Nodal 5‐Hz, three‐component sensors
We conduct a number of laboratory tests at the Albuquerque Seismological Laboratory to verify the self‐noise and fidelity in which 3 three‐component Fairfield Nodal Z‐Land, Generation 2, 5‐Hz sensors are able to record seismic signals. In addition to the incoherent self‐noise of the sensors, we estimate the sensitivity of the units in digital volts/m/s, the damping, and the free period. These thre
Authors
Adam T. Ringler, Robert E. Anthony, M.S Karplus, Austin Holland, David C. Wilson
The widespread influence of Great Lakes microseisms across the United States revealed by the 2014 polar vortex
During the winter of 2014, a weak polar vortex brought record cold temperatures to the north‐central (“Midwest”) United States, and the Great Lakes reached the highest extent of ice coverage (92.5%) since 1979. This event shut down the generation of seismic signals caused by wind‐driven wave action within the lakes (termed “lake microseisms”), giving an unprecedented opportunity to isolate and cha
Authors
Robert E. Anthony, Adam T. Ringler, David C. Wilson
Effects of thermal variability on broadband seismometers: Controlled experiments, observations, and implications
Isolating seismic instruments from temperature fluctuations is routine practice within the seismological community. However, the necessary degree of thermal stability required in broadband installations to avoid generating noise or compromising the fidelity in the seismic records is largely unknown and likely application dependent. To quantify the temperature sensitivity of seismometers over a bro
Authors
Claire Doody, Adam T. Ringler, Robert E. Anthony, David C. Wilson, Austin Holland, Charles R. Hutt, Leo Sandoval
Detection and characterization of pulses in broadband seismometers
Pulsing - caused either by mechanical or electrical glitches, or by microtilt local to a seismometer - can significantly compromise the long‐period noise performance of broadband seismometers. High‐fidelity long‐period recordings are needed for accurate calculation of quantities such as moment tensors, fault‐slip models, and normal‐mode measurements. Such pulses have long been recognized in accele
Authors
David C. Wilson, Adam T. Ringler, Charles R. Hutt
Repeatability of testing a small broadband sensor in the Albuquerque Seismological Laboratory Underground Vault
Variability in seismic instrumentation performance plays a fundamental role in our ability to carry out experiments in observational seismology. Many such experiments rely on the assumed performance of various seismic sensors as well as on methods to isolate the sensors from nonseismic noise sources. We look at the repeatability of estimating the self‐noise, midband sensitivity, and the relative o
Authors
Adam T. Ringler, Austin Holland, David C. Wilson
Characterizing local variability in long‐period horizontal tilt noise
Horizontal seismic data are dominated by atmospherically induced tilt noise at long periods (i.e., 30 s and greater). Tilt noise limits our ability to use horizontal data for sensitive seismological studies such as observing free earth modes. To better understand the local spatial variability of long‐period horizontal noise, we observe horizontal noise during quiet time periods in the Albuquerque
Authors
M.D. Rohde, Adam T. Ringler, Charles R. Hutt, David C. Wilson, Austin Holland, L.D Sandoval, Tyler Storm