Transient Electromagnetic Data form the North Adelaide Plains

Authors:
Brady Adams Flinchum
Owners: Brady Adams Flinchum
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Type: Resource
Storage: The size of this resource is 173.1 KB
Created: Aug 26, 2020 at 1:40 p.m.
Last updated: Aug 26, 2020 at 1:48 p.m.
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Abstract

We collected the TEM data using a Zonge Engineering NanoTEM system. The NanoTEM is a low-power, fast-sampling time-domain TEM system that was specifically designed to provide high resolution images of the near-surface (~50 metres depth). The NanoTEM data were collected using a 20 m x 20 m square transmitter loop with a 5 m x 5 m, single-turn receiving loop. The transmitter coil had an output current of 2 A and a turnoff of ~ 2 µs. The receiving loop sampled at 625 kHz, stacking 256 cycles at a repetition rate of 32 Hz. The stacks were averaged and then inspected to remove noisy data in the late times. The NanoTEM data were inverted using the Aarhusinv program, run using “smooth model” settings (Auken et al., 2006, 2015). The 1D inversion assumes laterally homogeneous layers. All NanoTEM soundings were inverted separately (i.e. there were no lateral constraints,) and placed next to one another and interpolated to generate pseudo 2D profiles of bulk electrical conductivity. The quality of the inversion is determined by a misfit value between the observed and modelled voltages.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
-34.5587°
East Longitude
138.4694°
South Latitude
-34.5587°
West Longitude
138.4694°

Temporal

Start Date: 05/31/2018
End Date: 05/31/2018
Leaflet Map data © OpenStreetMap contributors

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Credits

Contributors

People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Michael Hatch University of Adelaide

How to Cite

Flinchum, B. A. (2020). Transient Electromagnetic Data form the North Adelaide Plains, HydroShare, http://www.hydroshare.org/resource/6a918b747dd64eeb9ae891d697f0e42d

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

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