Mechanics of fault reactivation before, during, and after the 2015 eruption of Axial Seamount
Mechanics of fault reactivation before, during, and after the 2015 eruption of Axial Seamount
复制标题
2015 年轴海山喷发之前、期间和之后的断层再活动机制
DOI:
10.1130/g39978.1
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发表时间:
2018
期刊:
影响因子:
5.8
通讯作者:
Waldhauser, F.
中科院分区:
文献类型:
--
作者:
Levy, S.;Bohnenstiehl, D.R;Sprinkle, P.;Boettcher, M.S.;Wilcock, W.S.D.;Tolstoy, M.;Waldhauser, F.
Ocean-bottom seismic and seafloor pressure data from the Ocean Observatories Initiative’s Cabled Array were used to study fault reactivation within Axial Seamount (offshore Oregon, USA). Microearthquakes that occurred during 2015–2016 were located on portions of an outward-dipping ring fault system that was reactivated in response to the inflation and deflation of the underlying magma chamber. Prior to an eruption in April 2015, focal mechanisms showed a pattern of normal slip consistent with the differential vertical uplift of the caldera floor relative to the rim. During the eruption, seismic activity remained localized along these outward-dipping structures; however, the slip direction was reversed as the caldera floor subsided. After the eruption, as the volcano reinflated and the caldera floor uplifted, these faults exhibited sparser seismicity with a more heterogeneous pattern of slip. Monitoring the evolution of ring fault behavior through time may have utility as a metric in future eruption forecasts.
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影响因子:
56.9
作者:
W. Wilcock;M. Tolstoy;F. Waldhauser;Charles Garcia;Yen Joe Tan;D. Bohnenstiehl;J. Caplan‐Auerbach;R. Dziak;A. Arnulf;M. E. Mann
通讯作者:
W. Wilcock;M. Tolstoy;F. Waldhauser;Charles Garcia;Yen Joe Tan;D. Bohnenstiehl;J. Caplan‐Auerbach;R. Dziak;A. Arnulf;M. E. Mann
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
C. Troise;G. Natale;C. Kilburn
通讯作者:
C. Kilburn
影响因子:
--
作者:
R. Sohn;A. Barclay;S. Webb
通讯作者:
S. Webb
DOI:
--
发表时间:
2006
期刊:
Geological Society Special Publication
影响因子:
--
作者:
A. Folch;J. Gottsmann
通讯作者:
J. Gottsmann
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
A. Shuler;M. Nettles;G. Ekström
通讯作者:
G. Ekström