Continuous Tremor Activity With Stable Polarization Direction Following the 2014 Large Slow Slip Event in the Hikurangi Subduction Margin Offshore New Zealand

Iwasaki, Yuriko; Mochizuki, Kimihiro; Ishise, Motoko; Todd, Erin K.; Schwartz, Susan Y.; Zal, Hubert; Savage, Martha K.; Henrys, Stuart; Sheehan, Anne F.; Ito, Yoshihiro; Wallace, Laura M.; Webb, Spahr C.; Yamada, Tomoaki; Shinohara, Masanao

doi:10.1029/2021jb022161

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Continuous Tremor Activity With Stable Polarization Direction Following the 2014 Large Slow Slip Event in the Hikurangi Subduction Margin Offshore New Zealand

2022
By Iwasaki, Yuriko ; Mochizuki, Kimihiro ; Ishise, Motoko ; ...
Source: Journal of Geophysical Research: Solid Earth, 127(2)

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Journal Title:

Journal of Geophysical Research: Solid Earth
Personal Author:

Iwasaki, Yuriko ; Mochizuki, Kimihiro ; Ishise, Motoko ; Todd, Erin K. ; Schwartz, Susan Y. ; ... More +

Iwasaki, Yuriko ; Mochizuki, Kimihiro ; Ishise, Motoko ; Todd, Erin K. ; Schwartz, Susan Y. ; Zal, Hubert ; Savage, Martha K. ; Henrys, Stuart ; Sheehan, Anne F. ; Ito, Yoshihiro ; Wallace, Laura M. ; Webb, Spahr C. ; Yamada, Tomoaki ; Shinohara, Masanao Less -
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences)
Description:

Many types of slow earthquakes have been discovered at subduction zones around the world. However, the physical process of these slow earthquakes is not well understood. To monitor offshore slow earthquakes, a marine seismic and geodetic experiment was conducted at the Hikurangi subduction margin from May 2014 to June 2015. During this experiment, a large slow slip event (Mw 6.8) occurred directly beneath the ocean bottom seismometer (OBS) network. In this study, S-wave splitting and polarization analysis methods, which have been previously used on onshore data to investigate tremor and anisotropy, are applied to continuous OBS waveform data to identify tremors that are too small to detect by the envelope cross correlation
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Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Geophysics Space And Planetary Science
Source:

Journal of Geophysical Research: Solid Earth, 127(2)
DOI:

https://doi.org/10.1029/2021jb022161
ISSN:

2169-9313;2169-9356;
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PDF
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American Geophysical Union (AGU)
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Journal Article
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https://creativecommons.org/licenses/by-nc/4.0/
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CC BY-NC
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urn:sha256:1206b82ac9f6fbdc3318f6155499725680fd168237d14ba2621d329cdb405c29
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