NDLI: Extraction of Magnetic Local Anomalies Based on GIS

Content Provider	IEEE Xplore Digital Library
Author	Ping Wu hui-ping Xu Zong-tang Fu
Copyright Year	2009
Abstract	With the rapid development of geophysical surveying in China, the geophysical data is increasing quickly.However, it is still a challenge of how to improve the efficiency of data processing and interpretation. Most of the local Anomalies are shown as local protuberances on profiles which are similar with hills in the Digital Elevation Model (DEM). Based on ridgelines and the local greatest gradient, an algorithm of local anomalies extraction is proposed in this paper: taking the ridge point as the center, searching outward to the greatest gradient, filling the interior of anomaly areas, and finally finishing the extraction of local anomalies. Simultaneously, local anomalies of interest are obtained by retrieval of three parameters (axial orientation, intensity and average slope). Proved by the instance on the spot, local anomalies extracted by this algorithm are corresponding to manually selected anomaly points, which can greatly reduce the searching area and improve efficiency.
Starting Page	323
Ending Page	328
File Size	729766
Page Count	6
File Format	PDF
ISBN	9780769535708
DOI	10.1109/WCSE.2009.401
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Geographic Information Systems Gradient Ridge lines Geology Oceans Laboratories Geoscience Data processing Data mining Local anomaly Finishing Digital elevation models Software engineering
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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