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We apply cross correlation between multichannel seismic waveforms as a technique for signal detection and automatic event building at the International Data Centre (IDC). This technique allows detecting signals with amplitudes by at least a…

Geophysics · Physics 2017-01-11 Dmitry Bobrov , Ivan Kitov , Mikhail Rozhkov , Gadi Turiomuruguendo

Waveform cross correlation is an efficient tool for detection and characterization of seismic signals. The efficiency critically depends on the availability of master events. For the purposes of the Comprehensive Nuclear-Test-Ban Treaty,…

Geophysics · Physics 2013-05-15 Dmitry Bobrov , Ivan Kitov , Mikhail Rozhkov

Seismic monitoring of the Comprehensive Nuclear-Test-Ban Treaty using waveform cross correlation requires a uniform coverage of the globe with master events well recorded at array stations of the International Monitoring System. The essence…

Geophysics · Physics 2013-02-27 Dmitry Bobrov , Ivan Kitov , Mikhail Rozhkov

We demonstrate that several techniques based on cross correlation are able to significantly reduce the detection threshold of seismic sources worldwide and to improve the reliability of IDC arrivals by a more accurate estimation of their…

Geophysics · Physics 2012-12-27 Dmitry Bobrov , Ivan Kitov , Lassina Zerbo

The method of waveforms cross correlation (WCC) is used to detect signals from aftershocks of the August 14, 2016 earthquake within Sakhalin Island, which had local magnitude ML = 6.1. Arrivals of regular P- and S-waves detected by the WCC…

Geophysics · Physics 2017-12-27 Ivan Kitov

We assess the level of cross correlation between P-waves generated by earthquakes in the Atlantic Ocean and measured by 22 array stations of the International Monitoring System (IMS). There are 931 events with 6,411 arrivals in 2011 and…

Geophysics · Physics 2013-07-03 Dmitry Bobrov , Ivan Kitov , Mikhail Rozhkov

The method of waveform cross correlation (WCC) allows remote monitoring of weak seismic activity induced by underground tests. This type of monitoring is considered as a principal task of on-site inspection under the Comprehensive…

Physics and Society · Physics 2016-11-10 Dmitry Bobrov , Ivan Kitov , Mikhail Rozhkov

The multi-master method based on waveform cross-correlation has found several aftershocks of the third (DPRK3) and the fourth (DPRK4) announced underground nuclear tests conducted by the DPRK on 12.02.2013, and 06.01.2016, respectively. The…

Geophysics · Physics 2021-10-20 Ivan Kitov , Dmitry Bobrov , Mikhail Rozhkov

Machine Learning (ML) methods have demonstrated exceptional performance in recent years when applied to the task of seismic event detection. With numerous ML techniques now available for detecting seismicity, applying these methods in…

Our goal is to quantify whether, and if so how, spatio-temporal patterns in tropical cyclone (TC) satellite imagery signal an upcoming rapid intensity change event. To address this question, we propose a new nonparametric test of…

Applications · Statistics 2022-06-29 Trey McNeely , Galen Vincent , Kimberly M. Wood , Rafael Izbicki , Ann B. Lee

June 22nd, 2020 was an important day for nuclear test monitoring. The US undersecretary, Thomas DiNanno, made an official claim that a secret nuclear test was conducted at the Lop Nor testing site on that day. However, the Provisional…

Geophysics · Physics 2026-03-03 Ivan Kitov

The M8.8 Kamchatka earthquake on July 29, 2025 was one of the largest in the first quarter of the 21st century. It deserves a thorough analysis including the preparation process. A smaller M7.4 earthquake occurred on July 20 with its…

Geophysics · Physics 2026-01-23 Ivan O. Kitov

An automated, real-time, multiple sensor data source relying and globally applicable earthquake loss model and visualiser is desirable for post-event earthquake analysis. To achieve this there is a need to support rapid data ingestion, loss…

Computers and Society · Computer Science 2013-08-13 Anthony Astoul , Christopher Filliter , Eric Mason , Andrew Rau-Chaplin , Kunal Shridhar , Blesson Varghese , Naman Varshney

We have estimated the performance of discrimination criterion based on the P/S spectral amplitude ratios obtained from six underground tests conducted by the DPRK since October 2006 and six aftershocks induced by the last two explosions.…

Geophysics · Physics 2017-12-06 Ivan Kitov , Mikhail Rozhkov

We present a new 400 ks Chandra X-ray observation of the merging galaxy cluster Abell 2146. This deep observation reveals detailed structure associated with the major merger event including the Mach M=2.3+/-0.2 bow shock ahead of the dense,…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 H. R. Russell , B. R. McNamara , J. S. Sanders , A. C. Fabian , P. E. J. Nulsen , R. E. A. Canning , S. A. Baum , M. Donahue , A. C. Edge , L. J. King , C. P. O'Dea

Immediately following a disaster event, such as an earthquake, estimates of the damage extent play a key role in informing the coordination of response and recovery efforts. We develop a novel impact estimation tool that leverages a…

Applications · Statistics 2025-01-15 Max Anderson Loake , Hamish Patten , David Steinsaltz

We demonstrate the efficacy of a Bayesian statistical inversion framework for reconstructing the likely characteristics of large pre-instrumentation earthquakes from historical records of tsunami observations. Our framework is designed and…

Solar explosive events are commonly explained as small scale magnetic reconnection events, although unambiguous confirmation of this scenario remains elusive due to the lack of spatial resolution and of the statistical analysis of large…

Solar and Stellar Astrophysics · Physics 2015-05-27 Luis M. Sarro , Angel Berihuete

We present a Bayesian dynamic borrowing (BDB) approach to enhance the quantitative identification of adverse events (AEs) in spontaneous reporting systems (SRSs). The method embeds a robust meta-analytic predictive (MAP) prior with a…

Computation and Language · Computer Science 2025-05-20 François Haguinet , Jeffery L Painter , Gregory E Powell , Andrea Callegaro , Andrew Bate

After the earthquake occurred in Molise (Central Italy) on 31st October 2002 (Ml 5.4, 29 people dead), the local Servizio Regionale per la Protezione Civile to ensure a better analysis of local seismic data, through a convention with the…

Geophysics · Physics 2016-07-26 Giovanni De Gasperis , Christian Del Pinto
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