2022 Fiscal Year Final Research Report
Unraveling the end of the ocean by observing neutrinos and measuring volcanic water vapor
| Project/Area Number |
20K20916
|
|---|
| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
|
| Allocation Type | Multi-year Fund |
|---|
| Review Section |
Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields
|
|---|
| Research Institution | Obihiro University of Agriculture and Veterinary Medicine (2022)
Tohoku University (2020-2021) |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2020-07-30 – 2023-03-31
|
| Keywords | ニュートリノ / 火山 |
|---|
| Outline of Final Research Achievements |
Observations of geo-neutrinos from the KamLAND experiment indicate that the Earth's interior is gradually cooling. As a result, the water cycle between the earth's interior and surface will be lost, water will be trapped in the earth's depths, and the earth's oceans will eventually disappear.
In order to establish a method for predicting whether the ocean will disappear in the future, and if so, when it will disappear, we will improve the accuracy of geoneutrino observations and investigate the decay heat of uranium and thorium, which is a component of geothermal heat.In addition, we are developing measurement techniques and methods for measuring the amount of water returned from the ground to the surface due to volcanic eruptions.
|
| Free Research Field |
数物系科学
|
| Academic Significance and Societal Importance of the Research Achievements |
地球ニュートリノ観測は，地球内部の化学組成を調査し，地熱の起源を探る手法として確立され，地球科学者と共同で地殻やマントルなど地球内部のテーマについて研究が進んできた。その一方，地表のテーマについては本格的に研究が進められてきておらず，地球内部の熱測定から地表の活動である海洋についての研究に拡張するという点で学術的意義を持つ。また，地表から海が無くなるという事は，地表から生存圏が消失することを意味する。遠い将来のことではあるものの，限りある地球環境を意識し，我々は将来どのように生存していけばよいのか考えるきっかけになるという意味において社会的意義がある。
|
