NDLI: Electromagnetic field and material properties in ground penetrating radar

Content Provider	IEEE Xplore Digital Library
Author	Olhoeft, G.R.
Copyright Year	2003
Description	Author affiliation: Dept. of Geophys., Colorado Sch. of Mines, Golden, CO, USA (Olhoeft, G.R.)
Abstract	Electric, magnetic and electromagnetic fields are consequences of the existence, motion and acceleration of electric charge. Complex coupled vector field distributions in space and time result. Most material properties are consequences of EM field interactions between adjacent matter particles at atomic scales. Velocity, attenuation, wavelength, polarization, scattering, relaxation, and resonance are some of the properties and processes important to electromagnetic wave propagation in ground penetrating radar. Such properties and processes determine the performance limitations of ground penetrating radar systems, and they are also what are measured by ground penetrating radar to describe ground and things buried within the subsurface. Space and time distributions of material properties are described in terms of complex dielectric permittivity and complex magnetic permeability. "Complex" means there are parts describing both energy dissipation and storage, with consequential frequency dependent properties. Dielectric properties are dominantly controlled by the distribution and properties of water in the ground. Magnetic properties are dominantly controlled by the distribution and properties of iron in the ground. Field polarization and scattering processes are dominantly controlled by the geometric orientation and spatial distribution of contrasts in material properties at wavelength scales. Measurement of field properties and processes allows GPR to determine material properties.
Starting Page	144
Ending Page	147
File Size	333022
Page Count	4
File Format	PDF
ISBN	9076928045
DOI	10.1109/AGPR.2003.1207309
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-05-14
Publisher Place	Netherlands
Access Restriction	Subscribed
Rights Holder	2nd Intemational Workshop on Advanced Ground Penetrating Radar
Subject Keyword	Electromagnetic fields Material properties Ground penetrating radar Magnetic resonance Electromagnetic scattering Radar scattering Particle scattering Wavelength measurement Dielectrics Magnetic properties
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in