Repeatability analysis of airborne electromagnetic surveys

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Title: Repeatability analysis of airborne electromagnetic surveys
Authors: Hegarty, Avril
Stanley, Gerry
Kashdan, Eugene
Hodgson, Jim
Parnell, Andrew C.
Permanent link: http://hdl.handle.net/10197/7936
Date: 9-Sep-2016
Abstract: Purpose: We provide methods for determining the repeatability of airborne electromagnetic surveys when conducted at different altitudes over a number of repeated flights. Our data arise from the TELLUS project carried out by the Geological Surveys of Ireland and Northern Ireland and we examine the repeatability of the apparent resistivity at different frequencies. Methods: After considering a number of issues with the data, we propose two different models from the functional data analysis literature; a Weiner process with random effects, and a penalised spline smoother. Results: Both methods arrive at the same conclusion regarding repeatability of the data; results obtained are more repeatable for flights at lower altitudes. Conclusions: The target altitude for aircraft carrying out airborne electromagnetic surveys should be as low as possible.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: SpringerOpen
Copyright (published version): 2016 the Authors
Keywords: Apparent resistivity;Functional data analysis;P-splines;TELLUS project;Weiner process
DOI: 10.1186/s40929-016-0008-1
Language: en
Status of Item: Peer reviewed
Appears in Collections:Mathematics and Statistics Research Collection
Insight Research Collection

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