The persistent signature of tropical cyclones in ambient seismic noise
| Autor: | Salvatore Pascale, Flavio Maria Emanuele Pons, Lucia Gualtieri, Suzana J. Camargo, Göran Ekström |
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| Přispěvatelé: | Gualtieri, Lucia, Camargo, Suzana J., Pascale, Salvatore, Pons, Flavio M.E., Ekström, Göran |
| Rok vydání: | 2018 |
| Předmět: |
010504 meteorology & atmospheric sciences
statistical modeling tropical cyclone Seismic noise 010502 geochemistry & geophysics 01 natural sciences Pacific ocean Atmosphere Cyclones Geochemistry and Petrology FOS: Mathematics Earth and Planetary Sciences (miscellaneous) Spectral amplitude Tropical meteorology Geophysic ambient seismic noise 0105 earth and related environmental sciences Microseism Statistics Storm Signature (logic) Geophysics Microseisms Space and Planetary Science Climatology Tropical cyclone Geology |
| Zdroj: | Earth and Planetary Science Letters. 484:287-294 |
| ISSN: | 0012-821X |
| DOI: | 10.1016/j.epsl.2017.12.026 |
| Popis: | The spectrum of ambient seismic noise shows strong signals associated with tropical cyclones, yet a detailed understanding of these signals and the relationship between them and the storms is currently lacking. Through the analysis of more than a decade of seismic data recorded at several stations located in and adjacent to the northwest Pacific Ocean, here we show that there is a persistent and frequency-dependent signature of tropical cyclones in ambient seismic noise that depends on characteristics of the storm and on the detailed location of the station relative to the storm. An adaptive statistical model shows that the spectral amplitude of ambient seismic noise, and notably of the short-period secondary microseisms, has a strong relationship with tropical cyclone intensity and can be employed to extract information on the tropical cyclones. |
| Databáze: | OpenAIRE |
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