2009/10/05 by K. Eftaxias, Labrini Athanasopoulou, G. Balasis +10 · 1 citation
Computer Science · Earth and Planetary Sciences · Physics and Astronomy · #Anomaly (physics) #Anomaly detection #Computer science #Data mining #Earthquake Detection and Analysis #Entropy (arrow of time) #Geology #Physics #Seismology #Seismology and Earthquake Studies #Statistical physics #earthquake and tectonic studies #physics.geo-ph
paper · pdf · doi:10.5194/nhess-9-1953-2009
arxiv created 2009/10/05 · openalex publication_date 2009/11/25 · openalex created_date 2016/06/24 · arxiv updated 2020/11/04 · openalex updated_date 2026/08/05
Ultra low frequency-ULF (1 Hz or lower), kHz and MHz electromagnetic (EM) anomalies were recorded prior to the L'Aquila catastrophic earthquake (EQ) that occurred on April 6, 2009. The detected anomalies followed this temporal scheme. (i) The MHZ EM anomalies were detected on March 26, 2009 and April 2, 2009. The kHz EM anomalies were emerged on April, 4 2009. The ULF EM anomaly was continuously recorded from March 29, 2009 up to April 2, 2009. "Are EQs predictable?" is a question hotly debated in the science community. Its answer begs for another question: "Are there credible EQ precursors?". Despite fairly abundant circumstantial evidence pre-seismic EM signals have not been adequately accepted as real physical quantities. Therefore, the question effortlessly arises as to whether the observed anomalies before the L'Aquila EQ were seismogenic or not. The main goal of this work is to provide some insight into this issue.