View in EDS HTML Full Text PDF Full Text

Subsurface structural mapping of the Ba Na area (Vietnam) utilizing aeromagnetic data.

Saved in:
Bibliographic Details
Title: Subsurface structural mapping of the Ba Na area (Vietnam) utilizing aeromagnetic data.
Authors: Pham, Luan Thanh1 (AUTHOR) luanpt@hus.edu.vn, Hieu, Pham Trung2,3 (AUTHOR), Duong, Van-Hao4 (AUTHOR), Hoang-Minh, Thao1 (AUTHOR), Ngo, To-Nhu Thi1 (AUTHOR), Bui, Dong Van1 (AUTHOR)
Source: Earth Science Informatics. Dec2024, Vol. 17 Issue 6, p5585-5602. 18p.
Subject Terms: *Evidence gaps, *Data mapping, *Magnetization, *Scarcity, *Signals & signaling
Abstract: The Ba Na region plays a crucial role in deciphering the tectonic evolution of the Indochina terrane. This study addresses the scarcity of geophysical research in the area by utilizing aeromagnetic data to delineate subsurface structures. Various techniques including reduction to the pole (RTP), multi-stage RTP, reduction to the equator (RTE), enhanced analytic signal (EAS), theta map (TM), tilt angle of the horizontal gradient (TAHG), and fast sigmoid-based edge detection (FSED) were examined on synthetic datasets before employing them to analyze the geomagnetic field of the region. The results from the synthetic example show that the use of the RTE filter can provide a more reliable and accurate approach for removing asymmetries caused by non-vertical magnetization. These results also demonstrate the efficacy of applying TAHG and FSED to RTE aeromagnetic data for mapping subsurface structures in the Ba Na area. The findings reveal major magnetic contacts in the approximate ENE-WSW direction and the secondary contacts in the N-S direction, with depths ranging from 200 to 650 m, possibly arising from the collision between the Northern and Southern Vietnam blocks. Additionally, intrusive structures were identified in the region. This study constitutes the initial magnetic interpretation, providing valuable insights into the structural characteristics of the Ba Na area and filling a notable research gap in the understanding of this geologically significant region. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: enr
DbLabel: Energy & Power Source
An: 180989340
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Subsurface structural mapping of the Ba Na area (Vietnam) utilizing aeromagnetic data.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Pham%2C+Luan+Thanh%22">Pham, Luan Thanh</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> luanpt@hus.edu.vn</i><br /><searchLink fieldCode="AR" term="%22Hieu%2C+Pham+Trung%22">Hieu, Pham Trung</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Duong%2C+Van-Hao%22">Duong, Van-Hao</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hoang-Minh%2C+Thao%22">Hoang-Minh, Thao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ngo%2C+To-Nhu+Thi%22">Ngo, To-Nhu Thi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bui%2C+Dong+Van%22">Bui, Dong Van</searchLink><relatesTo>1</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Earth+Science+Informatics%22">Earth Science Informatics</searchLink>. Dec2024, Vol. 17 Issue 6, p5585-5602. 18p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Evidence+gaps%22">Evidence gaps</searchLink><br />*<searchLink fieldCode="DE" term="%22Data+mapping%22">Data mapping</searchLink><br />*<searchLink fieldCode="DE" term="%22Magnetization%22">Magnetization</searchLink><br />*<searchLink fieldCode="DE" term="%22Scarcity%22">Scarcity</searchLink><br />*<searchLink fieldCode="DE" term="%22Signals+%26+signaling%22">Signals & signaling</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The Ba Na region plays a crucial role in deciphering the tectonic evolution of the Indochina terrane. This study addresses the scarcity of geophysical research in the area by utilizing aeromagnetic data to delineate subsurface structures. Various techniques including reduction to the pole (RTP), multi-stage RTP, reduction to the equator (RTE), enhanced analytic signal (EAS), theta map (TM), tilt angle of the horizontal gradient (TAHG), and fast sigmoid-based edge detection (FSED) were examined on synthetic datasets before employing them to analyze the geomagnetic field of the region. The results from the synthetic example show that the use of the RTE filter can provide a more reliable and accurate approach for removing asymmetries caused by non-vertical magnetization. These results also demonstrate the efficacy of applying TAHG and FSED to RTE aeromagnetic data for mapping subsurface structures in the Ba Na area. The findings reveal major magnetic contacts in the approximate ENE-WSW direction and the secondary contacts in the N-S direction, with depths ranging from 200 to 650 m, possibly arising from the collision between the Northern and Southern Vietnam blocks. Additionally, intrusive structures were identified in the region. This study constitutes the initial magnetic interpretation, providing valuable insights into the structural characteristics of the Ba Na area and filling a notable research gap in the understanding of this geologically significant region. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=180989340
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s12145-024-01458-5
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 18
        StartPage: 5585
    Subjects:
      – SubjectFull: Evidence gaps
        Type: general
      – SubjectFull: Data mapping
        Type: general
      – SubjectFull: Magnetization
        Type: general
      – SubjectFull: Scarcity
        Type: general
      – SubjectFull: Signals & signaling
        Type: general
    Titles:
      – TitleFull: Subsurface structural mapping of the Ba Na area (Vietnam) utilizing aeromagnetic data.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Pham, Luan Thanh
      – PersonEntity:
          Name:
            NameFull: Hieu, Pham Trung
      – PersonEntity:
          Name:
            NameFull: Duong, Van-Hao
      – PersonEntity:
          Name:
            NameFull: Hoang-Minh, Thao
      – PersonEntity:
          Name:
            NameFull: Ngo, To-Nhu Thi
      – PersonEntity:
          Name:
            NameFull: Bui, Dong Van
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 12
              Text: Dec2024
              Type: published
              Y: 2024
          Identifiers:
            – Type: issn-print
              Value: 18650473
          Numbering:
            – Type: volume
              Value: 17
            – Type: issue
              Value: 6
          Titles:
            – TitleFull: Earth Science Informatics
              Type: main
ResultId 1