A low-cost SO₂ Imager with the Use of Digital Cameras of Consumer Use

• HASHIMOTO Takeshi

  Institute of Seismology and Volcanology, Faculty of Science, Hokkaido University

• TERADA Akihiko

  Volcanic Fluid Research Center, Tokyo Institute of Technology

• EJIRI Mitsumu

  National Institute of Polar Research

• NAKAMURA Takuji

  National Institute of Polar Research

• ABO Makoto

  Graduate School of System Design, Tokyo Metropolitan University

Bibliographic Information

Other Title

• 一般用デジタルカメラを利用した簡易SO₂カメラの製作
• 一般用デジタルカメラを利用した簡易SO₂カメラの製作
• イッパンヨウ デジタルカメラ オ リヨウ シタ カンイ SO ₂ カメラ ノ セイサク

Abstract

We produced an SO₂ imager of a low-cost version with the use of digital cameras of consumer use. General configuration and characteristics of the instrument are presented. Calibration with SO₂ cells of known column concentration confirmed a comparable absorption coefficient to the device which is previously invented by Mori and Burton (2006). Although simultaneous shooting with two cameras is necessary to overcome the temporal change of an object because of somewhat long exposure time (5 to 10 sec) required, this device operates without external power or control PCs, and thus, is suitable for mobile use. We performed a field test of the instrument at Sakurajima volcano and confirmed its validity as an SO₂ imager. However, further improvement of the optical system or a special care with UV scattering in front of a plume is necessary for quantitative applications in a field operation.

Journal

• BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN

  BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN 57 (4), 219-225, 2012

  The Volcanological Society of Japan

Keywords

• SO₂ camera
• discharge rate
• plume
• Sakurajima volcano

Details

• CRID: 1390282679281527936
• NII Article ID: 110009579095
• NII Book ID: AN10512786
• DOI: 10.18940/kazan.57.4_219
• ISSN: 21897182
• ISSN: 04534360
• HANDLE: 2115/67564
• NDL BIB ID: 024239144
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024239144
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed