DOI: 10.1002/2015GL064351
论文题名: A subsurface structure change associated with the eruptive activity at Sakurajima Volcano, Japan, inferred from an accurately controlled source
作者: Maeda Y. ; Yamaoka K. ; Miyamachi H. ; Watanabe T. ; Kunitomo T. ; Ikuta R. ; Yakiwara H. ; Iguchi M.
刊名: Geophysical Research Letters
ISSN: 0094-9596
EISSN: 1944-9327
出版年: 2015
卷: 42, 期: 13 起始页码: 5179
结束页码: 5186
语种: 英语
英文关键词: ACROSS
; active seismic source
; Sakurajima Volcano
; subsurface structure
; volcano monitoring
; volcano seismology
Scopus关键词: Seismology
; Signal systems
; ACROSS
; Active seismic
; Sakurajima
; Subsurface structures
; Volcano monitoring
; Volcano seismology
; Volcanoes
; accuracy assessment
; active margin
; Green function
; seismology
; temporal analysis
; volcanic eruption
; waveform analysis
; Japan
; Kagoshima [Kyushu]
; Kyushu
; Sakurajima
英文摘要: Temporal variations of Green functions associated with the eruptive activity at Sakurajima Volcano, Japan, were estimated using an accurately controlled routinely operated signal system (ACROSS). We deconvolved 400s waveforms of the ACROSS signal at nearby stations by a known source time function and stacked the results based on the time relative to individual eruptions and the eruption intervals; the quantities obtained by this procedure are Green functions corresponding to various stages of the eruptive activity. We found an energy decrease in the later phase of the Green functions in active eruptive periods. This energy decrease, localized in the 2-6s window of the Green functions, is difficult to explain by contamination from volcanic earthquakes and tremors. The decrease could be more reasonably attributed to a subsurface structure change caused by the volcanic activity. Key Points We computed and stacked the Green functions using ACROSS at Sakurajima We compared the Green functions with the eruptive activity A decrease of the later phase energy in active periods was observed. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938149523&doi=10.1002%2f2015GL064351&partnerID=40&md5=dab69de223f2b06335dc949ab12f853d
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9211
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
Recommended Citation:
Maeda Y.,Yamaoka K.,Miyamachi H.,et al. A subsurface structure change associated with the eruptive activity at Sakurajima Volcano, Japan, inferred from an accurately controlled source[J]. Geophysical Research Letters,2015-01-01,42(13).