Integrating WorldView-2 imagery and terrestrial LiDAR point clouds to extract dyke swarm geometry: Implications for magma emplacement mechanisms
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- 作者：Nina Nia ; ninina_zju@163.com" class="auth_mail" title="E-mail the corresponding author ; Ninghua Chena ; geo316@zju.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Jianyu Chenb ; chinechen@yahoo.com" class="auth_mail" title="E-mail the corresponding author ; Mingliang Liuc ; mingliang.liu@wsu.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：WorldView-2 imagery ; Terrestrial LiDAR ; Mafic dyke ; Geometry ; Magmatic overpressure ; Depth of magma chamber
- 刊名：Journal of Volcanology and Geothermal Research
- 出版年：2016
- 出版时间：15 January 2016
- 年：2016
- 卷：310
- 期：Complete
- 页码：1-11
- 全文大小：2650 K
文摘
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WorldView-2 imagery and terrestrial LiDAR data are integrated to extract dyke geometries.
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Image segmentation techniques are used to segment LiDAR data for detecting dyke margins.
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Random Sample Consensus (RANSAC) algorithm is used for fitting plane and calculating dyke attitude.
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Dyke lengths and thicknesses on Sijiao Island both follow power-law distributions.
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The magmatic overpressure is less than 11.5 MPa, corresponding to a depth of magma chamber less than 6.6 km.