Deep Neural Networks for Object-Based Image Classification of Hyperspectral Images
Applying Portable Magnetometers to Detect Buried Instruments After a Debris Flow Event
51(4):140-146Hsien-Te Chou[1*] Chih-Hsuan Huang Horng -Yuan Yen Tao-Ssu Tsai
* Corresponding Author. E-mail : email@example.com Show preview
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|Applying Portable Magnetometers to Detect Buried Instruments After a Debris Flow Event|
|Hsien-Te Chou[1*] Chih-Hsuan Huang Horng -Yuan Yen Tao-Ssu Tsai|
A debris flow triggered by 575 mm of rainfall over a 24-h period during Typhoon Soulik on July 13,2013 buried debris-flow monitoring equipment in the gully 1 catchment at Houyenshan, Miaoli, Taiwan. The buried depth and covered area exceeded 2.5 m and 100 m2, respectively. Portable magnetometers were later deployed to detect a buried iron instrument case, and manual excavation was conducted from February 11 to April 6, 2015. The geomagnetic
characteristics of the hot spots for the buried equipment exhibited both a high geomagnetic gradient and a null
value on the magnetic anomaly contour map. The particle size distribution in the excavated pit indicated that the gravelly debris flows were both matrix-supported and muddy during the deposition process.
Key Words: portable magnetometer, magnetic anomaly, subsurface prospecting, debris flow
〔1〕Department of Civil Engineering, National Central University, Jhongli, Taiwan R.O.C.
〔2〕Department of Earth Sciences, National Central University, Jhongli, Taiwan, R.O.C.
〔3〕SanHo Technology & Engineering Co., Ltd., Taipei, Taiwan, R.O.C.
* Corresponding Author. E-mail : firstname.lastname@example.org
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