| Item type |
リポジトリ登録用アイテムタイプ（シンプル）(1) |
| 公開日 |
2025-10-14 |
| タイトル |
|
|
タイトル |
Geochemical Signature of Deep Fluids Triggering Earthquake Swarm in the Noto Peninsula, Central Japan |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
M 7.6 earthquake |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Noto Peninsula |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
earthquake swarms |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
helium isotopes |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
mantle fluid |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
Umeda, Koji
Yamazaki, Yukino
Sumino, Hirochika
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
On New Year's Day 2024, a magnitude 7.6 event struck the Noto Peninsula in central Japan. Prior to this event, an intense earthquake swarm had persisted beneath the northeastern peninsula for more than five years. Geophysical evidence provides insight into the upwelling of deep fluids from the uppermost mantle that triggers the seismic swarm activity. The noble gases and their isotopes have been used as geochemical indicators to determine the origin of the fluids associated with the swarms and their upwelling. Gas samples collected from boreholes around the seismic source region are characterized by anomalously high 3He/4He ratios (∼3.9 RAcor), indicating infiltration of mantle fluids from the subcrustal lithosphere. Using a steady-state advection model, we calculated mantle helium fluxes of 1.1–2.4 × 10−15 mol cm−2 a−1, similar to those estimated for other representative fault zones, such as the San Andreas and North Anatolian faults. |
|
言語 |
en |
| 書誌情報 |
en : Geophysical Research Letters
巻 51,
号 13,
p. e2024GL108581
|
| ISSN |
|
|
収録物識別子タイプ |
EISSN |
|
収録物識別子 |
1944-8007 |
| DOI |
|
|
関連タイプ |
isIdenticalTo |
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1029/2024GL108581 |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
© 2024. The Author(s).This is an open access article under theterms of the Creative CommonsAttribution License, which permits use,distribution and reproduction in anymedium, provided the original work isproperly cited. |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 出版者 |
|
|
出版者 |
AGU（WILEY） |
|
言語 |
en |
GRL, 51,e2024GL108581.pdf (2.2 MB)
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