Sudden changes in the amplitude-frequency distribution of long-period tremors at Aso volcano, southwest Japan

NCUIR > College of Earth Sciences > Department of Earth Sciences > journal & Dissertation > Item 987654321/104273

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/104273

Title:	Sudden changes in the amplitude-frequency distribution of long-period tremors at Aso volcano, southwest Japan
Authors:	佐竹健治;Sandanbata, Osamu;Obara, Kazushige;Maeda, Takuto;Takagi, Ryota;Satake, Kenji
Contributors:	地球科學學院地球科學學系
Keywords:	Amplitude;amplitude-frequency;Amplitudes;Distribution;Electric power generation;Eruptions;Frequency distribution;Geophysics;Phases;phreatic eruption;Power law;Probability distribution functions;scaling;Strombolian eruption;Tremors;Volcanic activity;volcanic tremor;Volcanoes
Date:	2015-12-16
Issue Date:	2026-04-23 11:47:06 (UTC+8)
Publisher:	Wiley-Blackwell;Washington: Blackwell Publishing Ltd
Abstract:	摘要： AbstractWe observed the activity of long‐period tremors (LPTs) with a period of ~15 s at Aso volcano, Japan, during a 3 year period including the 2014 eruptions. The number of LPTs detected systematically increased 3 months before the Strombolian eruptions. LPT activity can be divided into five stages based on rapid changes in the maximum LPT amplitude. The amplitude‐frequency relation follows an exponential distribution during each stage before the Strombolian eruptions, with different characteristic amplitudes for each stage, indicating that the scale of the source property changed in stages. However, during a stage that persisted for 6 days after the onset of Strombolian activity, the amplitude‐frequency relation temporarily followed a power law distribution, indicating that the LPT source process no longer had a characteristic scale. In the last stage, the amplitude‐frequency relation returned to an exponential distribution. We therefore conclude that the physical source of volcanic LPTs changed during the eruption period. 其他題名： Geophys. Res. Lett 出版者： Washington: Blackwell Publishing Ltd 出版日期： 2015-12-16 出處： Geophysical Research Letters, 2015-12, Vol.42 (23), p.10,256-10,262 資源來源： Wiley Online Library - AutoHoldings Journals 版權： 2015. American Geophysical Union. All Rights Reserved. 識別號： ISSN: 0094-8276 識別號： EISSN: 1944-8007 識別號： DOI: 10.1002/2015GL066443
Appears in Collections:	[Department of Earth Sciences ] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	21	View/Open

社群 sharing

Loading...