The IMS Infrasound Network: Design and Establishment of Infrasound Stations

Christie, D. R.; Campus, P.

doi:10.1007/978-1-4020-9508-5_2

Cited by 152 publications

(109 citation statements)

References 30 publications

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“…The array design is such, which the array response function has a circular main lobe and low-amplitude sidelobes, far from the main lobe at frequencies of interest. The latter is done in order to avoid spatial aliasing [Christie and Campus, 2010]. The array processing of the ETN data consists of a delay and sum analysis-based algorithm to detect eruptions, determine the peak-to-peak pressure, and to identify the active Etna crater [Ulivieri et al, 2013].…”

Section: Infrasound Measurements and Data Processing Techniquesmentioning

confidence: 99%

Evaluation of wind and temperature profiles from ECMWF analysis on two hemispheres using volcanic infrasound

et al. 2014

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In this paper, we evaluate vertical wind and temperature profiles that are produced by the European Centre for Medium‐Range Weather Forecasts (ECMWF) atmospheric analysis. The evaluation is carried out on both hemispheres: we make use of stratospheric infrasound arrivals from Mount Etna (37°N) and Mount Yasur (22°S). The near‐continuous, high activity of both volcanoes permits the study of stratospheric propagation along well‐defined paths with a time resolution ranging from hours to multiple years. Infrasound observables are compared to theoretical estimates obtained from acoustic propagation modeling using the ECMWF analysis. While a first‐order agreement is found for both hemispheres, we report on significant discrepancies around some of the equinox periods and other intervals during which the atmosphere is in a state of transition and dynamical oscillations of the atmosphere dominate over the general circulation. We present an inversion study in which we make use of measured trace velocity estimates to estimate first‐order effective sound speed model updates in a Bayesian framework. Deviations from the a priori models around the stratopause up to 10% (≈ 30 m s−1) are estimated. Such updates are in line with the results from comparisons between ECMWF analysis and observations from lidar and microwave Doppler spectroradiometer facilities that were colocated during the course of the 2012–2013 Atmospheric dynamics Research and InfraStructure in Europe (ARISE) measurement campaign.

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Section: Infrasound Measurements and Data Processing Techniquesmentioning

confidence: 99%

Evaluation of wind and temperature profiles from ECMWF analysis on two hemispheres using volcanic infrasound

et al. 2014

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“…This was the biggest impact over land since the poorly observed Tunguska impact in 1908, for which kinetic energy estimates range from 3 to 5 (2) to 10 to 50 MT (3). From the measured period of infrasound waves circum-traveling the globe (4), an early estimate of~470 kT was derived for Chelyabinsk (5). Infrasound data from Russia and Kazakhstan provide 570 T 150 kT; see supplementary materials (SM) section 1.4 (6).…”

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confidence: 99%

Chelyabinsk Airburst, Damage Assessment, Meteorite Recovery, and Characterization

Попова¹,

Jenniskens²,

Emel’yanenko³

et al. 2013

Science

509

379

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Deep Impact? On 15 February 2013, the Russian district of Chelyabinsk, with a population of more than 1 million, suffered the impact and atmospheric explosion of a 20-meter-wide asteroid—the largest impact on Earth by an asteroid since 1908. Popova et al. (p. 1069 , published online 7 November; see the Perspective by Chapman ) provide a comprehensive description of this event and of the body that caused it, including detailed information on the asteroid orbit and atmospheric trajectory, damage assessment, and meteorite recovery and characterization.

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“…The IMS infrasound arrays have been deployed worldwide over the last 15 years or so (Christie and Campus, 2010). Table 1 gives the locations of the 46 arrays certified and sending data as of August 2014.…”

Section: The Global Network Of Infrasound Arraysmentioning

confidence: 99%

Could the IMS Infrasound Stations Support a Global Network of Small Aperture Seismic Arrays?

Gibbons

Kværna

Mykkeltveit

2015

Seismological Research Letters

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The IMS Infrasound Network: Design and Establishment of Infrasound Stations

Cited by 152 publications

References 30 publications

Evaluation of wind and temperature profiles from ECMWF analysis on two hemispheres using volcanic infrasound

Evaluation of wind and temperature profiles from ECMWF analysis on two hemispheres using volcanic infrasound

Chelyabinsk Airburst, Damage Assessment, Meteorite Recovery, and Characterization

Could the IMS Infrasound Stations Support a Global Network of Small Aperture Seismic Arrays?

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