Fast mapping and analysis of anthropogenic noise sources affecting MRS experiments

J.J. Larsen, E. Dalgaard, P. Christiansen, E. Auken

Publikation: Bidrag til bog/rapport/konferenceproceedingsKonferenceartikel i proceedingspeer review

Abstrakt

The applicability of the magnetic resonance sounding (MRS) technique in urbanized areas is limited by the inherently weak signal from the subsurface water which is often deeply buried in noise from anthropogenic sources. The noise can have spatially variations on even sub-100 m scales and the signal to noise ratio of an MRS measurement can therefore be optimized by a careful choice of the exact location. In this paper we present an instrument for fast mapping and analysis of the noise conditions at a site prior to MRS experiments. The main components of the instrument are two induction receiver coils connected to amplifiers and a digital oscilloscope controlled by a PC. Analysis of the gathered data reveals the spatial distribution of the different noise components, in particular powerline harmonics and spikes. A comprehensive noise map of a test site is presented and analyzed.

OriginalsprogEngelsk
TitelNear Surface Geoscience 2014 - 20th European Meeting of Environmental and Engineering Geophysics
ForlagEuropean Association of Geoscientists and Engineers, EAGE
ISBN (Elektronisk)9789462820272
DOI
StatusUdgivet - 2014
Udgivet eksterntJa
Begivenhed20th European Meeting of Environmental and Engineering Geophysics of EAGE's Near Surface Geoscience Division - Athens, Grækenland
Varighed: 14 sep. 201418 sep. 2014

Publikationsserier

NavnNear Surface Geoscience 2014 - 20th European Meeting of Environmental and Engineering Geophysics

Konference

Konference20th European Meeting of Environmental and Engineering Geophysics of EAGE's Near Surface Geoscience Division
Land/OmrådeGrækenland
ByAthens
Periode14/09/1418/09/14

Programområde

  • Programområde 2: Vandressourcer

Fingeraftryk

Dyk ned i forskningsemnerne om 'Fast mapping and analysis of anthropogenic noise sources affecting MRS experiments'. Sammen danner de et unikt fingeraftryk.

Citationsformater