WEKO3
アイテム
Time rate of atmospheric 3He/4He change: Constraint from South Pacific deep seawater
https://doi.org/10.15027/53164
https://doi.org/10.15027/531649aec1d67-f016-4baa-9d3f-41097408610a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
JSHUCE_11-1_113.pdf (565.4 KB)
|
| Item type | デフォルトアイテムタイプ_（フル）(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2023-03-18 | |||||||
| タイトル | ||||||||
| タイトル | Time rate of atmospheric 3He/4He change: Constraint from South Pacific deep seawater | |||||||
| 言語 | en | |||||||
| 作成者 |
Sano, Yuji
× Sano, Yuji
|
|||||||
| 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 | |||||||
| 内容記述 | ||||||||
| 内容記述 | A recent study of atmospheric 3He/4He ratio has suggested that it is decreasing with time, perhaps due to anthropogenic release from oil and natural gas wells of crustal helium with a low 3He/4He ratio. A couple of objections have been made against this hypothesis based on new observations. It is important to verify the time rate of atmospheric 3He/4He change, since this has serious implications for the field of helium isotope geochemistry. I present here the time rate change of -0.094±0.156 %/year (2σ errors) based on the 3He/4He ratio obtained from South Pacific deep seawater. Taking into account four other independent measurements on the time rate, I can calculate the average time rate of -0.028±0.030 %/year (2σ), which is consistent with a zero rate of change in atmospheric 3He/4He ratio. However the average time rate is also consistent with the time rate of -0.033 %/year estimated from anthropogenic release of crustal helium. Thus the problem is not yet solved and further study is desirable. | |||||||
| 言語 | en | |||||||
| 出版者 | ||||||||
| 出版者 | Hiroshima University | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 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 | departmental bulletin paper | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| ID登録 | ||||||||
| ID登録 | 10.15027/53164 | |||||||
| ID登録タイプ | JaLC | |||||||
| 収録物識別子 | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0075-4374 | |||||||
| 収録物識別子 | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA11095875 | |||||||
| 開始ページ | ||||||||
| 開始ページ | 113 | |||||||
| 書誌情報 |
Journal of science of the Hiroshima University. Series C, Earth and planetary sciences Journal of science of the Hiroshima University. Series C, Earth and planetary sciences 巻 11, 号 1, p. 113-118, 発行日 1998-03-30 |
|||||||
| 旧ID | 53164 | |||||||
