Permeability-control on volcanic hydrothermal system : case study for Mt. Tokachidake, Japan, based on numerical simulation and field observation
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DOI[10.1186/s40623-017-0623-5]to the data of the same series
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- Material Type
- 記事
- Author/Editor
- Ryo TanakaTakeshi HashimotoNobuo Matsushima
- Publication, Distribution, etc.
- Publication Date
- 2017-03-08
- Publication Date (W3CDTF)
- 2017-03-08
- Periodical title
- EPS : Earth, Planets and Space
- No. or year of volume/issue
- 69(39)
- Volume
- 69(39)
- ISSN (Periodical Title)
- 1880-5981
- ISSN-L (Periodical Title)
- 1343-8832
- Text Language Code
- eng
- DOI
- 10.1186/s40623-017-0623-5
- Persistent ID (NDL)
- info:ndljp/pid/10319690
- Collection
- Collection (Materials For Handicapped People:1)
- Collection (particular)
- 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > その他
- Acquisition Basis
- オンライン資料収集制度
- Date Accepted (W3CDTF)
- 2017-04-04T20:19:14+09:00
- Date Captured (W3CDTF)
- 2017-03-24
- Format (IMT)
- application/pdf
- Access Restrictions
- 国立国会図書館内限定公開
- Service for the Digitized Contents Transmission Service
- 図書館・個人送信対象外
- Availability of remote photoduplication service
- 可
- Periodical Title (URI)
- Periodical Title (Persistent ID (NDL))
- info:ndljp/pid/10319651
- Data Provider (Database)
- 国立国会図書館 : 国立国会図書館デジタルコレクション
- Summary, etc.
- We investigate a volcanic hydrothermal system by using numerical simulation with three key observables as reference: the magnetic total field, vent temperature, and heat flux. We model the shallow hydrothermal system of Mt. Tokachidake, central Hokkaido, Japan, as a case study. At this volcano, continuous demagnetization has been observed since at least 2008, suggesting heat accumulation beneath the active crater area. The surficial thermal manifestation has been waning since 2000. We perform numerical simulations of heat and mass flow within a modeled edifice at various conditions and calculate associated magnetic total field changes due to the thermomagnetic effect. We focus on the system’s response for up to a decade after permeability is reduced at a certain depth in the modeled conduit. Our numerical simulations reveal that (1) conduit obstruction (i.e., permeability reduction in the conduit) tends to bring about a decrease in vent temperature and heat flux, as well as heat accumulation below the level of the obstruction, (2) the recorded changes cannot be consistently explained by changing heat supply from depth, and (3) caprock structure plays a key role in controlling the location of heating and pressurization. Although conduit obstruction may be caused by either physical or chemical processes in general, the latter seems more likely in the case of Mt. Tokachidake.
- DOI
- 10.1186/s40623-017-0623-5
- Access Restrictions
- インターネット公開
- Rights (production)
- Creative Commons Attribution 4.0 International
- Related Material (URI)
- Is Referenced By
- Sulfur dioxide flux measurement at Mount Tokachi, Japan, with TROPOspheric Monitoring InstrumentSignificance of Electromagnetic Surveys at Active Volcanoes: Toward Evaluating the Imminence of Wet EruptionsComparative Petrological Studies of 1962 and 1988–1989 Eruptions of Tokachidake Volcano, Japan: A Case Study for Understanding the Relationship Between Eruption Style and Magma Processes火山の活動不安定評価における熱消磁現象の活用と噴火予測の可能性Quantitative relationship between plume emission and multiple deflations after the 2014 phreatic eruption at Ontake volcano, Japan
- Data Provider (Database)
- 国立情報学研究所 : CiNii Research
- Original Data Provider (Database)
- 学術機関リポジトリデータベース雑誌記事索引データベースCrossrefCiNii ArticlesCrossrefCrossrefCrossrefCrossrefCrossref
- Bibliographic ID (NDL)
- 10319690
- NAID
- 120006360154